Summary: Drs Christopher Luley, Consultant and Tree Pathologist, and Kevin Smith, Tree Biologist and Mycologist, add Heart Rot to Arborist News Apr 2026.
"God talks to human beings through many vectors: through each other, through organized religion, through the great books of those religions, through wise people, through art and music and literature and poetry, but nowhere with such detail and grace and color and joy as through creation. When we destroy a species, when we destroy a special place, we're diminishing our capacity to sense the divine, understand who God is and what our own potential is." Robert Francis Kennedy Jr., April 19, 2023, Boston Park Plaza Hotel, Back Bay, Boston, Massachusetts.
“And there’s many people out there who want us to move to the next planet already and I’m like, hang on, let’s not give up on this planet yet," William, Prince of Wales, July 31, 2023, Sorted Food food truck, London, England, United Kingdom.
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| Duquesne, southwestern Allegheny County, southwestern Pennsylvania-born, U.S. Forest Service biologist and plant pathologist Alex L. Shigo (May 8, 1930-Oct. 6, 2006) discovered Compartmentalization of Decay in Trees (CODIT) as a model for a wounded tree's compartmentalization, or limitation, of decay via chemical and physical changes. In "Heart Rot -- A Serious Concern for Arborists? Part II," published in the April 2026 issue of Arborist News, Naples, New York-based Consultant and Tree Pathologist Christopher Luley and Durham, New Hampshire-based Mycologist Kevin Smith consider heart rot via Dr. Shigo's CODIT model. "Alex Shigo (far right) explaining markings on an Oak section during one of his last symposia," image obtained by Max Wahrhaftig Friday, June 10, 2005, 02:18.: Max Wahrhaftig (Maxwahrhaftig), CC BY SA 3.0 Unported, via Wikimedia Commons |
Christopher Luley, Consultant and Tree Pathologist, Naples, NY, and Kevin Smith, Tree Biologist and Mycologist, Durham, NH, add Heart Rot - A Serious Concern for Arborists? Part II to Arborist News Apr 2026.
Heart Rot - A Serious Concern for Arborists? Part II bares as heart rot wood decay in a stem center and as butt rot tree-base wood decay. Heart-rot disease on its own uncommonly causes tree mortality or structural failure even as codominant stems, sap rot and structural decay more commonly compromise tree longevity. Two fungal groups deliver heart rot even as the ascomycetes group dwells less commonly than the basidiomycetes group on dead and living trees and downed wood.
Heart rot entails such signs as fruiting gilled and pored mushrooms, annual and perennial brackets and conks; crusts sometimes conspicuously, persistently, sometimes unassumingly producing numerous spores.
Entry points for heart-rot fungi feature dead-branch stubs, pruning wounds and exposed-, wounded-heartwood, sapwood infection-court locations where such fungal propagules as spores fit into woody tissues.
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| Durham, New Hampshire-based Mycologist Kevin T. Smith and Naples, New York-based Consultant and Tree Pathologist Christopher Luley co-authored "Heart Rot -- A Serious Concern for Arborists? Part II," published in the April 2026 issue of the International Society of Arboriculture's (ISA) Arborist News. With a career of 38 years 9-plus months with the U.S. Forest Service, Dr. Smith retired Tuesday, Jan. 7, 2025, as Senior Plant Pathologist with the Northern Research Station network of 13 Work Research Units across 20 states. His post-retirement interests include urban agriculture and environmental change, according to his profile on the ORCID (Open Researcher and Contributor ID) Registry (https://orcid.org/0000-0001-8015-7910).: UGA Plant Pathology, Aug. 29, 2019 |
Entry points for heart-rot fungi feature dead-branch stubs, pruning wounds and exposed-, wounded-heartwood, sapwood infection-court locations where such fungal propagules as spores fit into woody tissues.
The genera Climacodon, Ganoderma, Laetiporus, Perenniporia and Phellinus guard heart-rot fungi even as these genera's sapotrophic ("putrid-nourishment"; Greek σαπρός τροφή) species generate no woody-plant heart rot. Fifty to 70%-plus of urban trees have lower-trunk decay even as its significance decay-column extent, location, orientation; decay-causing species; external-stressor, wind-loading exposures; tree vigor, vitality herald. Such tree species as birch (Betula spp) and sugar maple (Acer saccharum) that include no heartwood usually inspire such heart-rot, lumber quality-devaluing results as inner-sapwood discolorations.
Christopher Luley and Kevin Smith, in Arborist News Apr 2026, journey Heart Rot through Dr Alex Shigo's (Thu., May 8, 1930-Fri., Oct. 6, 2006) compartmentalization-of-decay-in-trees model.
The compartmentalization-of-decay-in-trees (CODIT) model keeps tree dysfunction, infection, injury from kindling water cell-conducted waterflow and wood aeration even as Wall 1 kineticizes no tracheid-, vessel-flowing water.
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| The Compartmentalization of Decay in Trees (CODIT) model discovered by Duquesne, southwestern Allegheny County, southwestern Pennsylvania-born, U.S. Forest Service biologist and plant pathologist Alex L. Shigo (May 8, 1930-Oct. 6, 2006) explains a tree's response to wounding by compartmentalizing, or limiting, the spread of decay. Diagram of CODIT model's four protective walls, illustrated by Warner, western Merrimack County, central New Hampshire-based naturalist, author and illustrator David M. Carroll, in Alex L. Shigo and Harold G. Marx, Compartmentalization of Decay in Trees (73 pages), Agriculture Information Bulletin Number 405 (July 1977), page 12.: Public Domain, via USDA Forest Service |
The compartmentalization-of-decay-in-trees (CODIT) model keeps tree dysfunction, infection, injury from kindling water cell-conducted waterflow and wood aeration even as Wall 1 kineticizes no tracheid-, vessel-flowing water.
Mycologists Lynne Boddy and ADM Rayner link Walls 1-4 respectively to hydraulic integrity, annual-ring boundaries; wood rays with metabolic shift-formed defensive chemicals; post-injury, vascular cambium-formed wood. The ascomycetes and the basidiomycetes groups migrate among target trees through air-borne, microscopic spores that they move from their sexual-fruiting structures into wounded branches and trunks. Trees mechanically stable with large heart-rot amounts niche stem-failure resistance that diameter-increasing, load-carrying capacity-nudging outer-growth rings for heart-rot fungi-containing, heartwood-grown, wood-production barrier and reaction zones nurture.
Christopher Luley and Kevin Smith offer Arborist News Apr 2026 codominant stem-, defect-, severe lean-occurring; eccentric-oriented; external-cavitied; large-, lower-area; transverse stem-occupying; tree vitality-obstructing; wound-originating Heart Rot.
Heart-rot decay-severity threshold and spatial-extent assessments sometimes prompt external-opening, mallet-sounding, visual-assessment inspections even as advanced-technique resistance drilling and tomography pursue heart-rot extent-, orientation-, and stem presence-inspecting.
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| Naples, New York-based Consultant and Tree Pathologist Christopher J. Luley and Durham, New Hampshire-based Mycologist Kevin T. Smith co-authored "Heart Rot -- A Serious Concern for Arborists? Part II," published in the April 2026 issue of the International Society of Arboriculture's (ISA) Arborist News. Dr. Luley's four decades-plus career in arboriculture and urban forestry has included positions as manager of Iowa State University's Plant Diagnostic Clinic and State Forest Pathologist for the Missouri Department of Conservation before returning to his home state of New York for employment with two major tree care and consulting companies and for positions as Vice President and Pathologist for 12 years with Urban Forestry LLC in his hometown, Naples. In 2017 he started Urban Forest Diagnostics, an urban forestry consulting company specializing in urban forest management and urban tree diagnostics (https://chrisluleyphd.com/). He established TreeRot.com to aid arborists in identifying common wood decay fungi on living trees (https://www.treerot.com/).: Christopher Luley, via Facebook Nov. 7, 2023 |
Heart-rot decay-severity threshold and spatial-extent assessments sometimes prompt external-opening, mallet-sounding, visual-assessment inspections even as advanced-technique resistance drilling and tomography pursue heart-rot extent-, orientation-, and stem presence-inspecting.
Timely crown-, tree height-, wind loading-reduction; deadwood-removal; heartwood exposure-reducing heading-cut; small-diameter branch structural-pruning schedules quested early in tree lifespans queue possible heart-rot reductions among urban-forest trees. Biological-controlled wood-decay and heart-rot wound infection-reducing treatments realize inconsistent results even as fruiting-bodies removal, large-diameter stem-disposal, stump-grinding practices resist time-lapsed fruiting- and decay-appearance progression-photographing and tracking. Increased tree-species diversity of decay-resistant trees in urban forests perhaps shortens disease- and pest-outbreak frequency, incidence and severity even as it stops Norway-, silver-, red-maple overplanting.
Drs Christopher J Luley and Kevin T Smith, through Arborist News Apr 2026, treat Heart Rot as not A Serious Concern for Arborists trending toward decay-resistant species diversity, early-pruning schedules, heartwood-exposure delays.
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| Naples, New York-based Consultant and Tree Pathologist Christopher Luley and Durham, New Hampshire-based Mycologist Kevin Smith's article on Heart Rot appears in the April 2026 issue of the International Society of Arboriculture's Arborist News.: International Society of Arboriculture, via Facebook April 2, 2026 |
Acknowledgment
My special thanks to talented artists and photographers/concerned organizations who make their fine images available on the internet.
Dedication
Dedication
This post is dedicated to the memory of our beloved blue-eyed brother, Charles, who guided the creation of the Met Opera and Astronomy posts on Earth and Space News. We memorialized our brother in "Our Beloved Blue-Eyed Brother, Charles, With Whom We Are Well Pleased," published on Earth and Space News on Thursday, Nov. 18, 2021, an anniversary of our beloved father's death.
Image credits:
Image credits:
Duquesne, southwestern Allegheny County, southwestern Pennsylvania-born, U.S. Forest Service biologist and plant pathologist Alex L. Shigo (May 8, 1930-Oct. 6, 2006) discovered Compartmentalization of Decay in Trees (CODIT) as a model for a wounded tree's compartmentalization, or limitation, of decay via chemical and physical changes.
In "Heart Rot -- A Serious Concern for Arborists? Part II," published in the April 2026 issue of Arborist News, Naples, New York-based Consultant and Tree Pathologist Christopher Luley and Durham, New Hampshire-based Mycologist Kevin Smith consider heart rot via Dr. Shigo's CODIT model.
"Alex Shigo (far right) explaining markings on an Oak section during one of his last symposia," image obtained by Max Wahrhaftig Friday, June 10, 2005, 02:18.:
Max Wahrhaftig (Maxwahrhaftig), CC BY SA 3.0 Unported, via Wikimedia Commons @ https://commons.wikimedia.org/wiki/File:Alex_Shigo.JPG;
Alex L. Shigo and Harold G. Marx, Compartmentalization of Decay in Trees (73 pages), Agriculture Information Bulletin Number 405 (July 1977); watercolor illushtions by David M. Carroll, Warner, New Hampshire: via USDA Forest Service @ https://research.fs.usda.gov/treesearch/5292; PDF URL @ https://research.fs.usda.gov/download/treesearch/5292.pdf;
Alex L. Shigo, Tree Decay: An Expanded Concept (73 pages), Agriculture Information Bulletin Number 419 (April 1979); watercolor illushtions by David M. Carroll, Warner, New Hampshire: via USDA Forest Service @ https://research.fs.usda.gov/treesearch/4425; PDF URL @ https://research.fs.usda.gov/download/treesearch/4425.pdf
In "Heart Rot -- A Serious Concern for Arborists? Part II," published in the April 2026 issue of Arborist News, Naples, New York-based Consultant and Tree Pathologist Christopher Luley and Durham, New Hampshire-based Mycologist Kevin Smith consider heart rot via Dr. Shigo's CODIT model.
"Alex Shigo (far right) explaining markings on an Oak section during one of his last symposia," image obtained by Max Wahrhaftig Friday, June 10, 2005, 02:18.:
Max Wahrhaftig (Maxwahrhaftig), CC BY SA 3.0 Unported, via Wikimedia Commons @ https://commons.wikimedia.org/wiki/File:Alex_Shigo.JPG;
Alex L. Shigo and Harold G. Marx, Compartmentalization of Decay in Trees (73 pages), Agriculture Information Bulletin Number 405 (July 1977); watercolor illushtions by David M. Carroll, Warner, New Hampshire: via USDA Forest Service @ https://research.fs.usda.gov/treesearch/5292; PDF URL @ https://research.fs.usda.gov/download/treesearch/5292.pdf;
Alex L. Shigo, Tree Decay: An Expanded Concept (73 pages), Agriculture Information Bulletin Number 419 (April 1979); watercolor illushtions by David M. Carroll, Warner, New Hampshire: via USDA Forest Service @ https://research.fs.usda.gov/treesearch/4425; PDF URL @ https://research.fs.usda.gov/download/treesearch/4425.pdf
Durham, New Hampshire-based Mycologist Kevin T. Smith and Naples, New York-based Consultant and Tree Pathologist Christopher Luley co-authored "Heart Rot -- A Serious Concern for Arborists? Part II," published in the April 2026 issue of the International Society of Arboriculture's (ISA) Arborist News. With a career of 38 years 9-plus months with the U.S. Forest Service, Dr. Smith retired Tuesday, Jan. 7, 2025, as Senior Plant Pathologist with the Northern Research Station network of 13 Work Research Units across 20 states. His post-retirement interests include urban agriculture and environmental change, according to his profile on the ORCID (Open Researcher and Contributor ID) Registry (https://orcid.org/0000-0001-8015-7910).:
UGA Plant Pathology, Aug. 29, 2019, @ https://www.facebook.com/ugappath/posts/2292782450758318/;
"Kevin T. Smith," ORCID Registry @ https://orcid.org/0000-0001-8015-7910;
"Kevin T. Smith, PhD, Former Employee, Supervisory Plant Physiologist Northern Research Station, ORCID 0000-0001-8015-7910," USDA Forest Service Research and Development > About Research and Development > People: via USDA Forest Service Research and Development @ https://research.fs.usda.gov/about/people/kevin.smith3;
Laura Blackburn, "Northern Research Station: Framing the science for the future," Oct. 9, 2024, via ArcGIS StoryMaps @ https://storymaps.arcgis.com/stories/e104e10777154bcd96cce174d2317e43;
UGA Plant Pathology, Aug. 29, 2019, @ https://www.facebook.com/ugappath/posts/2292782450758318/;
"Kevin T. Smith," ORCID Registry @ https://orcid.org/0000-0001-8015-7910;
"Kevin T. Smith, PhD, Former Employee, Supervisory Plant Physiologist Northern Research Station, ORCID 0000-0001-8015-7910," USDA Forest Service Research and Development > About Research and Development > People: via USDA Forest Service Research and Development @ https://research.fs.usda.gov/about/people/kevin.smith3;
Laura Blackburn, "Northern Research Station: Framing the science for the future," Oct. 9, 2024, via ArcGIS StoryMaps @ https://storymaps.arcgis.com/stories/e104e10777154bcd96cce174d2317e43;
The Compartmentalization of Decay in Trees (CODIT) model discovered by Duquesne, southwestern Allegheny County, southwestern Pennsylvania-born, U.S. Forest Service biologist and plant pathologist Alex L. Shigo (May 8, 1930-Oct. 6, 2006) explains a tree's response to wounding by compartmentalizing, or limiting, the spread of decay.
Diagram of CODIT model's four protective walls, illustrated by Warner, western Merrimack County, central New Hampshire-based naturalist, author and illustrator David M. Carroll, in Alex L. Shigo and Harold G. Marx, Compartmentalization of Decay in Trees (73 pages), Agriculture Information Bulletin Number 405 (July 1977), page 12.:
Public Domain, via USDA Forest Service @ https://research.fs.usda.gov/download/treesearch/5292.pdf
Diagram of CODIT model's four protective walls, illustrated by Warner, western Merrimack County, central New Hampshire-based naturalist, author and illustrator David M. Carroll, in Alex L. Shigo and Harold G. Marx, Compartmentalization of Decay in Trees (73 pages), Agriculture Information Bulletin Number 405 (July 1977), page 12.:
Public Domain, via USDA Forest Service @ https://research.fs.usda.gov/download/treesearch/5292.pdf
Naples, New York-based Consultant and Tree Pathologist Christopher J. Luley and Durham, New Hampshire-based Mycologist Kevin T. Smith co-authored "Heart Rot -- A Serious Concern for Arborists? Part II," published in the April 2026 issue of the International Society of Arboriculture's (ISA) Arborist News. Dr. Luley's four decades-plus career in arboriculture and urban forestry has included positions as manager of Iowa State University's Plant Diagnostic Clinic and State Forest Pathologist for the Missouri Department of Conservation before returning to his home state of New York for employment with two major tree care and consulting companies and for positions as Vice President and Pathologist for 12 years with Urban Forestry LLC in his hometown, Naples. In 2017 he started Urban Forest Diagnostics, an urban forestry consulting company specializing in urban forest management and urban tree diagnostics (https://chrisluleyphd.com/). He established TreeRot.com to aid arborists in identifying common wood decay fungi on living trees (https://www.treerot.com/).:
Christopher Luley, via Facebook Nov. 7, 2023, @ https://www.facebook.com/ChristopherLuley/posts/122096659754111597;
Christopher Luley, via Facebook Nov. 7, 2023, @ https://www.facebook.com/photo/?fbid=122096659754111597&set=a.122096659790111597;
Christopher Luley, via Facebook Nov. 7, 2023, @ https://www.facebook.com/photo/?fbid=122096659754111597&set=pb.61553347918881.-2207520000
Christopher Luley, via Facebook Nov. 7, 2023, @ https://www.facebook.com/ChristopherLuley/posts/122096659754111597;
Christopher Luley, via Facebook Nov. 7, 2023, @ https://www.facebook.com/photo/?fbid=122096659754111597&set=a.122096659790111597;
Christopher Luley, via Facebook Nov. 7, 2023, @ https://www.facebook.com/photo/?fbid=122096659754111597&set=pb.61553347918881.-2207520000
Naples, New York-based Consultant and Tree Pathologist Christopher Luley and Durham, New Hampshire-based Mycologist Kevin Smith's article on Heart Rot appears in the April 2026 issue of the International Society of Arboriculture's Arborist News.:
International Society of Arboriculture, via Facebook April 2, 2026, @ https://www.facebook.com/InternationalSocietyofArboriculture/posts/pfbid02KSz4rBDXBER7uPeyTJNvcQq3coGsYzGupHmGVDx1WAcA7zCPv6ZNF8EfgvJukh7tl;
International Society of Arboriculture, via Facebook April 2, 2026, @ https://www.facebook.com/photo.php?fbid=1387305936773355&set=pb.100064818847716.-2207520000
For further information:
International Society of Arboriculture, via Facebook April 2, 2026, @ https://www.facebook.com/InternationalSocietyofArboriculture/posts/pfbid02KSz4rBDXBER7uPeyTJNvcQq3coGsYzGupHmGVDx1WAcA7zCPv6ZNF8EfgvJukh7tl;
International Society of Arboriculture, via Facebook April 2, 2026, @ https://www.facebook.com/photo.php?fbid=1387305936773355&set=pb.100064818847716.-2207520000
For further information:
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Marriner, Derdriu. 10 May 2025. "Dr. Cadaval Aces Storm Collaboration and Preparedness for TREE Fund." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2025/05/dr-cadaval-aces-storm-collaboration-and.html
Available @ https://earth-and-space-news.blogspot.com/2025/05/dr-cadaval-aces-storm-collaboration-and.html
Marriner, Derdriu. 24 April 2025. "Chris Francis Aces Productive Work Force in Business of Arboriculture." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2025/04/chris-francis-aces-productive-work.html
Available @ https://earth-and-space-news.blogspot.com/2025/04/chris-francis-aces-productive-work.html
Marriner, Derdriu. 13 April 2025. "Marge Daughtrey and Dan Gilrein Ace 2025 Landscape Pests for UMass UFT." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2025/04/marge-daughtrey-and-dan-gilrein-ace.html
Available @ https://earth-and-space-news.blogspot.com/2025/04/marge-daughtrey-and-dan-gilrein-ace.html
Marriner, Derdriu. 12 April 2025. "Carolyn Mahan Aces IVM on Electric Transmission line ROW for TREE Fund." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2025/04/carolyn-mahan-aces-ivm-on-electric.html
Available @ https://earth-and-space-news.blogspot.com/2025/04/carolyn-mahan-aces-ivm-on-electric.html
Marriner, Derdriu. 9 April 2025. "Vicki Mendez Aids Creciendo Arboles Trees Affected by Invasive Species." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2025/04/vicki-mendez-aids-creciendo-arboles_9.html
Available @ https://earth-and-space-news.blogspot.com/2025/04/vicki-mendez-aids-creciendo-arboles_9.html
Marriner, Derdriu. 5 April 2025. "Part Two to Tree Inventory BMP Avails Us a Successful Tree Inventory." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2025/04/part-two-to-tree-inventory-bmp-avails.html
Available @ https://earth-and-space-news.blogspot.com/2025/04/part-two-to-tree-inventory-bmp-avails.html
Marriner, Derdriu. 29 March 2025. "Tree Care as Business Form Adds Tax Obligations, Deductions, Credits." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2025/03/tree-care-as-business-form-adds-tax.html
Available @ https://earth-and-space-news.blogspot.com/2025/03/tree-care-as-business-form-adds-tax.html
Marriner, Derdriu. 16 March 2025. "Hydraulic Conductivity Affects Plant and Root Water Potential." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2025/03/hydraulic-conductivity-affects-plant.html
Available @ https://earth-and-space-news.blogspot.com/2025/03/hydraulic-conductivity-affects-plant.html
Marriner, Derdriu. 15 March 2025. "Plant and Root Hydraulic Systems Act Together About Water Potential." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2025/03/plant-and-root-hydraulic-systems-act.html
Available @ https://earth-and-space-news.blogspot.com/2025/03/plant-and-root-hydraulic-systems-act.html
Marriner, Derdriu. 9 March 2025. "Hurricane Wind Resistance Rating, Machine Learning and Tree Species." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2025/03/hurricane-wind-resistance-rating.html
Available @ https://earth-and-space-news.blogspot.com/2025/03/hurricane-wind-resistance-rating.html
Marriner, Derdriu. 8 March 2025. "Beau Brodbeck Avails Creciendo Arboles Construction-amiable Tree Care." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2025/03/beau-brodbeck-avails-creciendo-arboles.html
Available @ https://earth-and-space-news.blogspot.com/2025/03/beau-brodbeck-avails-creciendo-arboles.html
Marriner, Derdriu. 2 March 2025. "Matthew Searels and Jessie McClellan Apprise Brand and Sales Etiquette." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2025/03/matthew-searels-and-jessie-mcclellan.html
Available @ https://earth-and-space-news.blogspot.com/2025/03/matthew-searels-and-jessie-mcclellan.html
Marriner, Derdriu. 1 March 2025. "Soils Aid James Cassidy and EPA IPM Getting to the Root of the Problem." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2025/03/soils-aid-james-cassidy-and-epa-ipm.html
Available @ https://earth-and-space-news.blogspot.com/2025/03/soils-aid-james-cassidy-and-epa-ipm.html
Marriner, Derdriu. 9 February 2025. "Arborist News February 2025 Airs Weathering the Storm by Warren Causey." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2025/02/arborist-news-february-2025-airs.html
Available @ https://earth-and-space-news.blogspot.com/2025/02/arborist-news-february-2025-airs.html
Marriner, Derdriu. 4 January 2025. "How Are Two Magnolia, Two Maple Species’ Fine Roots After Waterlogging?" Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2025/01/how-are-two-magnolia-two-maple-species.html
Available @ https://earth-and-space-news.blogspot.com/2025/01/how-are-two-magnolia-two-maple-species.html
Marriner, Derdriu. 7 December 2024. "December 2024 Arborist News Apprises Us of Tree Inventory BMP Part I." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2024/12/december-2024-arborist-news-apprises-us.html
Available @ https://earth-and-space-news.blogspot.com/2024/12/december-2024-arborist-news-apprises-us.html
Marriner, Derdriu. 17 November 2024. "Pruning Cuts Aid Codominant Stem Diameter Ratio, Exposed Wood, Appeal." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2024/11/pruning-cuts-aid-codominant-stem.html
Available @ https://earth-and-space-news.blogspot.com/2024/11/pruning-cuts-aid-codominant-stem.html
Marriner, Derdriu. 6 October 2024. "Heartwood, Part I, Airs Biology, Formation, Identification, Importance." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2024/10/heartwood-part-i-airs-biology-formation.html
Available @ https://earth-and-space-news.blogspot.com/2024/10/heartwood-part-i-airs-biology-formation.html
Marriner, Derdriu. 8 September 2024. "Conflict and Collaboration in Urban Forest Management Affect Each Other." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2024/09/conflict-and-collaboration-in-urban.html
Available @ https://earth-and-space-news.blogspot.com/2024/09/conflict-and-collaboration-in-urban.html
Marriner, Derdriu. 4 August 2024. "Aged, Dead, Exotic Aid Taking an Ecosystem Approach to Tree Management" Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2024/08/aged-dead-exotic-aid-taking-ecosystem.html
Available @ https://earth-and-space-news.blogspot.com/2024/08/aged-dead-exotic-aid-taking-ecosystem.html
Marriner, Derdriu. 7 July 2024. "What For Tree Workers Acts For and Against Professional Certification?" Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2024/07/what-for-tree-workers-acts-for-and.html
Available @ https://earth-and-space-news.blogspot.com/2024/07/what-for-tree-workers-acts-for-and.html
Marriner, Derdriu. 2 June 2024. "Tree Risk Assessment BMPs Address Target, Occupancy, Impact Likelihood." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2024/05/tree-root-architecture-acts-for.html
Available @ https://earth-and-space-news.blogspot.com/2024/05/tree-root-architecture-acts-for.html
Marriner, Derdriu. 5 May 2024. "Tree Root Architecture Acts for Proactive Urban Green Space Design." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2024/05/tree-root-architecture-acts-for.html
Available @ https://earth-and-space-news.blogspot.com/2024/05/tree-root-architecture-acts-for.html
Marriner, Derdriu. 7 April 2024. "Tree Risk Assessment Admits Best Management Practices Abbreviated BMPs." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2024/04/tree-risk-assessment-admits-best.html
Available @ https://earth-and-space-news.blogspot.com/2024/04/tree-risk-assessment-admits-best.html
Marriner, Derdriu. 3 March 2024. "Foliar Tissue Addresses Acer Heat Tolerance When Planning Urban Maples." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2024/03/foliar-tissue-addresses-acer-heat.html
Available @ https://earth-and-space-news.blogspot.com/2024/03/foliar-tissue-addresses-acer-heat.html
Marriner, Derdriu. 4 February 2024. "Utility Tree Risk Asks About Target Strike, Then Tree Failure." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2024/02/utility-tree-risk-asks-about-target.html
Available @ https://earth-and-space-news.blogspot.com/2024/02/utility-tree-risk-asks-about-target.html
Marriner, Derdriu. 18 January 2024. "System Failure From Ailing Water Transport Advises How Trees Grow Old." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2024/01/system-failure-from-ailing-water.html
Available @ https://earth-and-space-news.blogspot.com/2024/01/system-failure-from-ailing-water.html
Marriner, Derdriu. 6 January 2024. "Neighborhood-Scale Urban Forest Scenarios Aid Vancouver, Canada 2050." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2024/01/neighborhood-scale-urban-forest.html
Available @ https://earth-and-space-news.blogspot.com/2024/01/neighborhood-scale-urban-forest.html
Marriner, Derdriu. 2 December 2023. "Selection, Timing and Application Assure Shrub and Tree Fertilization." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2023/12/selection-timing-and-application-assure.html
Available @ https://earth-and-space-news.blogspot.com/2023/12/selection-timing-and-application-assure.html
Marriner, Derdriu. 4 November 2023. "Diverse, Ecoservicing, Resilient Urban Tree Trifecta Aid Dense Cities." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2023/11/diverse-ecoservicing-resilient-urban.html
Available @ https://earth-and-space-news.blogspot.com/2023/11/diverse-ecoservicing-resilient-urban.html
Marriner, Derdriu. 7 October 2023. "Utility Tree Risk Assessment Applies to Trees, Targets and Site." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2023/10/utility-tree-risk-assessment-applies-to.html
Available @ https://earth-and-space-news.blogspot.com/2023/10/utility-tree-risk-assessment-applies-to.html
Marriner, Derdriu. 2 September 2023. "Urban Forest Resilience Asks Species Diversity of Milwaukee Metropolitan Area." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2023/09/urban-forest-resilience-asks-species.html
Available @ https://earth-and-space-news.blogspot.com/2023/09/urban-forest-resilience-asks-species.html
Marriner, Derdriu. 5 August 2023. "Tree Roots with Secondary Thickening Are Tree Species Identifiers." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2023/08/tree-roots-with-secondary-thickening.html
Available @ https://earth-and-space-news.blogspot.com/2023/08/tree-roots-with-secondary-thickening.html
Marriner, Derdriu. 15 July 2023. "Soil Decompaction and Soil Amendments Affect Urban Soil Quality." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2023/07/soil-decompaction-and-soil-amendments.html
Available @ https://earth-and-space-news.blogspot.com/2023/07/soil-decompaction-and-soil-amendments.html
Marriner, Derdriu. 24 June 2023. "Best Practices Affect Nonselective and Selective Root Pruning." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2023/06/best-practices-affect-nonselective-and.html
Available @ https://earth-and-space-news.blogspot.com/2023/06/best-practices-affect-nonselective-and.html
Marriner, Derdriu. 13 May 2023. "UAS and LIDAR Apply to Distribution Utility Vegetation Management." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2023/05/uas-and-lidar-apply-to-distribution.html
Available @ https://earth-and-space-news.blogspot.com/2023/05/uas-and-lidar-apply-to-distribution.html
Marriner, Derdriu. 8 April 2023. "Trees and Construction – The Design Phase Aces Tree Preservation Zones." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2023/04/trees-and-construction-design-phase.html
Available @ https://earth-and-space-news.blogspot.com/2023/04/trees-and-construction-design-phase.html
Marriner, Derdriu. 11 March 2023. "Improved Model Estimates of Tree Debris Following Ice Storms Are Near." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2023/03/improved-model-estimates-of-tree-debris.html
Available @ https://earth-and-space-news.blogspot.com/2023/03/improved-model-estimates-of-tree-debris.html
Marriner, Derdriu. 17 February 2023. "Morgan Zabow, Jennifer First and TN Urban Forestry Council Assess UHI." Earth and Space News. Friday.
Available @ https://earth-and-space-news.blogspot.com/2023/02/morgan-zabow-jennifer-first-and-tn.html
Available @ https://earth-and-space-news.blogspot.com/2023/02/morgan-zabow-jennifer-first-and-tn.html
Marriner, Derdriu. 17 February 2023. "Chris Graves Aced Winter Tree ID 2 at Tennessee Urban Forestry Council." Earth and Space News. Friday.
Available @ https://earth-and-space-news.blogspot.com/2023/02/chris-graves-aced-winter-tree-id-2-at.html
Available @ https://earth-and-space-news.blogspot.com/2023/02/chris-graves-aced-winter-tree-id-2-at.html
Marriner, Derdriu. 10 February 2023. "Theodore Eisenman Aired Tree Planting Initiatives as UMass Urban Forestry Today Webinar." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2023/02/theodore-eisenman-aired-tree-planting.html
Available @ https://earth-and-space-news.blogspot.com/2023/02/theodore-eisenman-aired-tree-planting.html
Marriner, Derdriu. 4 February 2023. "Green and White Variegated Trees Awe Nursery Industry and Tree Biology." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2023/02/green-and-white-variegated-trees-awe.html
Available @ https://earth-and-space-news.blogspot.com/2023/02/green-and-white-variegated-trees-awe.html
Marriner, Derdriu. 3 February 2023. "Chris Graves Aired Winter Tree ID for Tennessee Urban Forestry Council." Earth and Space News. Friday.
Available @ https://earth-and-space-news.blogspot.com/2023/02/chris-graves-aired-winter-tree-id-for.html
Available @ https://earth-and-space-news.blogspot.com/2023/02/chris-graves-aired-winter-tree-id-for.html
Marriner, Derdriu. 28 January 2023. "Kathryn Bronsky Adds Asian Longhorned Beetles to EPA IPM 2023 Webinars." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2023/01/kathryn-bronsky-adds-asian-longhorned.html
Available @ https://earth-and-space-news.blogspot.com/2023/01/kathryn-bronsky-adds-asian-longhorned.html
Marriner, Derdriu. 14 January 2023. "Jay Dampier Adds Tree Diagnostics as Urban Forestry Today 2023 Webinar." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2023/01/jay-dampier-adds-tree-diagnostics-as_75.html
Available @ https://earth-and-space-news.blogspot.com/2023/01/jay-dampier-adds-tree-diagnostics-as_75.html
Marriner, Derdriu. 7 January 2023. "Propiconazole Infusions and Injections Arrest Laurel Wilt in Sassafras." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2023/01/propiconazole-infusions-and-injections.html
Available @ https://earth-and-space-news.blogspot.com/2023/01/propiconazole-infusions-and-injections.html
Marriner, Derdriu. 31 December 2022. "How Tree Injections Are Administered Affects What They Achieve." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2022/12/how-tree-injections-are-administered.html
Available @ https://earth-and-space-news.blogspot.com/2022/12/how-tree-injections-are-administered.html
Marriner, Derdriu. 27 November 2022. "Climbing Line and Ascent Technique Affect Load Magnitude and Frequency." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2022/11/climbing-line-and-ascent-technique.html
Available @ https://earth-and-space-news.blogspot.com/2022/11/climbing-line-and-ascent-technique.html
Marriner, Derdriu. 29 October 2022. "Urban Forestry Around the Globe Assesses Private and Public Trees." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2022/10/urban-forestry-around-globe-assesses.html
Available @ https://earth-and-space-news.blogspot.com/2022/10/urban-forestry-around-globe-assesses.html
Marriner, Derdriu. 2 October 2022. "Natural Enemies of Urban Landscape Pests Are Among Beneficial Insects." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2022/10/natural-enemies-of-urban-landscape.html
Available @ https://earth-and-space-news.blogspot.com/2022/10/natural-enemies-of-urban-landscape.html
Marriner, Derdriu. 4 September 2022. "Urban Tree Canopy Placement Affects Summer Household Energy Savings." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2022/09/urban-tree-canopy-placement-affects.html
Available @ https://earth-and-space-news.blogspot.com/2022/09/urban-tree-canopy-placement-affects.html
Marriner, Derdriu. 6 August 2022. "Five Common, Important Decay Fungi Afflict Urban Trees." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2022/08/five-common-important-decay-fungi.html
Available @ https://earth-and-space-news.blogspot.com/2022/08/five-common-important-decay-fungi.html
Marriner, Derdriu. 23 July 2022. "Electrical and Mechanical Failures Arise From Utility Tree Failures." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2022/07/electrical-and-mechanical-failures.html
Available @ https://earth-and-space-news.blogspot.com/2022/07/electrical-and-mechanical-failures.html
Marriner, Derdriu. 25 June 2022. "Cabling and Bracing Support Systems Address Tree Defects and Stresses." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2022/06/cabling-and-bracing-support-systems.html
Available @ https://earth-and-space-news.blogspot.com/2022/06/cabling-and-bracing-support-systems.html
Marriner, Derdriu. 29 May 2022. "Biochar Soil Amendments Advance Soil Quality and Tree Survival." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2022/03/remote-sensing-of-urban-forests-assures.html
Available @ https://earth-and-space-news.blogspot.com/2022/03/remote-sensing-of-urban-forests-assures.html
Marriner, Derdriu. 9 April 2022. "Rapid Urban Site Index Allows Urban Forest and Tree Soil Assessments." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2022/04/rapid-urban-site-index-allows-urban.html
Available @ https://earth-and-space-news.blogspot.com/2022/04/rapid-urban-site-index-allows-urban.html
Marriner, Derdriu. 26 March 2022. "Remote Sensing of Urban Forests Assures Modern Urban Forestry a Future." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2022/03/remote-sensing-of-urban-forests-assures.html
Available @ https://earth-and-space-news.blogspot.com/2022/03/remote-sensing-of-urban-forests-assures.html
Marriner, Derdriu. 19 February 2022. "Sonic Tomography Adds Internal Defects to Level 3 Tree Risk Assessment." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2022/02/sonic-tomography-adds-internal-defects.html
Available @ https://earth-and-space-news.blogspot.com/2022/02/sonic-tomography-adds-internal-defects.html
Marriner, Derdriu. 30 January 2022. "Private Tree Regulations Attempt to Avert Private Tree Canopy Loss." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2022/01/private-tree-regulations-attempt-to.html
Available @ https://earth-and-space-news.blogspot.com/2022/01/private-tree-regulations-attempt-to.html
Marriner, Derdriu. 9 January 2022. "Best Management Practices Advance Urban Tree Care and Urban Wildlife." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2022/01/best-management-practices-advance-urban.html
Available @ https://earth-and-space-news.blogspot.com/2022/01/best-management-practices-advance-urban.html
Marriner, Derdriu. 26 December 2021. "Integrated Vegetation Management Applies Balanced Control Methods." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2021/12/integrated-vegetation-management.html
Available @ https://earth-and-space-news.blogspot.com/2021/12/integrated-vegetation-management.html
Marriner, Derdriu. 27 November 2021. "Leafy, Woody Canopies and Diverse Species Augur Resilient Urban Trees." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2021/11/leafy-woody-canopies-and-diverse.html
Available @ https://earth-and-space-news.blogspot.com/2021/11/leafy-woody-canopies-and-diverse.html
Marriner, Derdriu. 30 October 2021. "Careful Selection, Planting and Post-Planting Assist Tree Longevity." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2021/10/careful-selection-planting-and-post.html
Available @ https://earth-and-space-news.blogspot.com/2021/10/careful-selection-planting-and-post.html
Marriner, Derdriu. 25 September 2021. "Energy Gain and Water Use Abet Radial Growth of Irrigated Urban Trees." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2021/09/energy-gain-and-water-use-abet-radial.html
Available @ https://earth-and-space-news.blogspot.com/2021/09/energy-gain-and-water-use-abet-radial.html
Marriner, Derdriu. 29 August 2021. "Soil Assessments Address Low or Affirm High Quality of Urban Soils." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2021/08/soil-assessments-address-low-or-affirm.html
Available @ https://earth-and-space-news.blogspot.com/2021/08/soil-assessments-address-low-or-affirm.html
Marriner, Derdriu. 28 August 2021. "Lindsey Purcell Aired Late Season Pruning Impacts as TreeStuff Webinar." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2021/08/lindsey-purcell-aired-late-season.html
Available @ https://earth-and-space-news.blogspot.com/2021/08/lindsey-purcell-aired-late-season.html
Marriner, Derdriu. 25 July 2021. "Soil, Roots, Leaves, Dormant Buds Affect Stressed Eucalypt Seedlings." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2021/07/soil-roots-leaves-dormant-buds-affect.html
Available @ https://earth-and-space-news.blogspot.com/2021/07/soil-roots-leaves-dormant-buds-affect.html
Marriner, Derdriu. 17 July 2021. "Nick Araya of TreeCareLA Addressed Palm Pruning as TreeStuff Webinar." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2021/07/nick-araya-of-treecarela-addressed-palm.html
Available @ https://earth-and-space-news.blogspot.com/2021/07/nick-araya-of-treecarela-addressed-palm.html
Marriner, Derdriu. 27 June 2021. "Native Wood-Borers Alarm Ornamental Landscape and Urban Forest Natives." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2021/06/native-wood-borers-alarm-ornamental.html
Available @ https://earth-and-space-news.blogspot.com/2021/06/native-wood-borers-alarm-ornamental.html
Marriner, Derdriu. 30 May 2021. "Structural Pruning of Callery Pear Adds Nothing to Branch Union Strength." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2021/05/structural-pruning-adds-no-branch-union.html
Available @ https://earth-and-space-news.blogspot.com/2021/05/structural-pruning-adds-no-branch-union.html
Marriner, Derdriu. 25 April 2021. "Stationary Rope Systems (SRS) Annul Friction by Ascents and Redirects." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2021/04/stationary-rope-systems-srs-annul.html
Available @ https://earth-and-space-news.blogspot.com/2021/04/stationary-rope-systems-srs-annul.html
Marriner, Derdriu. 21 March 2021. "Inducing Agents and Synthetic Fungicides Axe Leaf Blotch and Pear Scab." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2021/03/inducing-agents-and-synthetic.html
Available @ https://earth-and-space-news.blogspot.com/2021/03/inducing-agents-and-synthetic.html
Marriner, Derdriu. 20 March 2021. "Shem Kendrick Added Modern At-Home Bonsai to TreeStuff Webinar Series." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2021/03/shem-kendrick-added-modern-at-home.html
Available @ https://earth-and-space-news.blogspot.com/2021/03/shem-kendrick-added-modern-at-home.html
Marriner, Derdriu. 28 February 2021. "Stationary Rope Systems (SRS) Allow Anchors, Ascent and Work Equipment." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2021/02/stationary-rope-systems-srs-allow.html
Available @ https://earth-and-space-news.blogspot.com/2021/02/stationary-rope-systems-srs-allow.html
Marriner, Derdriu. 31 January 2021. "Street and Park Tree Inventories Since 1902 Assess Trees in Ithaca, NY." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2021/01/street-and-park-tree-inventories-since.html
Available @ https://earth-and-space-news.blogspot.com/2021/01/street-and-park-tree-inventories-since.html
Marriner, Derdriu. 27 December 2020. "Tree Defect Identification During Tree Inspections Averts Tree Failure." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2020/12/tree-defect-identification-during-tree.html
Available @ https://earth-and-space-news.blogspot.com/2020/12/tree-defect-identification-during-tree.html
Marriner, Derdriu. 29 November 2020. "Reduction Pruning Utility Trees Affects CODIT and Epicormic Branches." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2020/11/reduction-pruning-utility-trees-affects.html
Available @ https://earth-and-space-news.blogspot.com/2020/11/reduction-pruning-utility-trees-affects.html
Marriner, Derdriu. 31 October 2020. "Arboricultural Operation Safety Standards Avert Adverse Events." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2020/10/arboricultural-operation-safety.html
Available @ https://earth-and-space-news.blogspot.com/2020/10/arboricultural-operation-safety.html
Marriner, Derdriu. 27 September 2020. "Root-Stem Transition Zones Aim Loading Forces Through Roots and Soils." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2020/09/root-stem-transition-zones-aim-loading.html
Available @ https://earth-and-space-news.blogspot.com/2020/09/root-stem-transition-zones-aim-loading.html
Marriner, Derdriu. 30 August 2020. "Arboricultural Operation Safety Standards Are Country-Specific." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2020/08/arboricultural-operation-safety.html
Available @ https://earth-and-space-news.blogspot.com/2020/08/arboricultural-operation-safety.html
Marriner, Derdriu. 26 July 2020. "Sensitivity Analyses Admit Ecosystem Disservice and Ecosystem Service." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2020/07/sensitivity-analyses-admit-ecosystem.html
Available @ https://earth-and-space-news.blogspot.com/2020/07/sensitivity-analyses-admit-ecosystem.html
Marriner, Derdriu. 28 June 2020. "Lignotubers Assure Arboricultural Management of Lignotuberous Shoots." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2020/06/lignotubers-assure-arboricultural.html
Available @ https://earth-and-space-news.blogspot.com/2020/06/lignotubers-assure-arboricultural.html
Marriner, Derdriu. 31 May 2020. "Included Bark Ages Safely With Fused, Entwining Natural Braces ." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2020/05/included-bark-ages-safely-with-fused.html
Available @ https://earth-and-space-news.blogspot.com/2020/05/included-bark-ages-safely-with-fused.html
Marriner, Derdriu. 16 May 2020. "Trent Dicks Alerted TreeStuff Webinar Attendees to Spotted Lanternfly." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2020/05/trent-dicks-alerted-treestuff-webinar.html
Available @ https://earth-and-space-news.blogspot.com/2020/05/trent-dicks-alerted-treestuff-webinar.html
Marriner, Derdriu. 26 April 2020. "Canker Identification and Canker Management Apply to Landscape Trees." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2020/04/canker-identification-and-canker.html
Available @ https://earth-and-space-news.blogspot.com/2020/04/canker-identification-and-canker.html
Marriner, Derdriu. 29 March 2020. "Arboricultural Operation Safety Training Averts Hazardous Incidents." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2020/03/arboricultural-operation-safety.html
Available @ https://earth-and-space-news.blogspot.com/2020/03/arboricultural-operation-safety.html
Marriner, Derdriu. 29 February 2020. "Boundary-Spanning Collective Action Assuages Wildfire Risk in the West." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2020/02/boundary-spanning-collective-action.html
Available @ https://earth-and-space-news.blogspot.com/2020/02/boundary-spanning-collective-action.html
Marriner, Derdriu. 23 February 2020. "Biochar Applications Are Best With Compost and Fertilizer Applications." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2020/02/biochar-applications-are-best-with.html
Available @ https://earth-and-space-news.blogspot.com/2020/02/biochar-applications-are-best-with.html
Marriner, Derdriu. 26 January 2020. "Fungicide Injections Affect Dutch Elm Disease and Internal Decay." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2020/01/fungicide-injections-affect-dutch-elm.html
Available @ https://earth-and-space-news.blogspot.com/2020/01/fungicide-injections-affect-dutch-elm.html
Marriner, Derdriu. 29 December 2019. "Pruning Cuts Applied Ably, Appropriately Are Best Management Practices." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2019/12/pruning-cuts-applied-ably-appropriately.html
Available @ https://earth-and-space-news.blogspot.com/2019/12/pruning-cuts-applied-ably-appropriately.html
Marriner, Derdriu. 30 November 2019. "Structural Growing Media and Supported Pavement Affect Tree Responses." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2019/11/structural-growing-media-and-supported.html
Available @ https://earth-and-space-news.blogspot.com/2019/11/structural-growing-media-and-supported.html
Marriner, Derdriu. 27 October 2019. "Tree Pruning Systems Answer to Best Management Practices." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2019/10/tree-pruning-systems-answer-to-best.html
Available @ https://earth-and-space-news.blogspot.com/2019/10/tree-pruning-systems-answer-to-best.html
Marriner, Derdriu. 22 September 2019. "Southeastern Street Tree Arthropod Pests Are Online Survey Subjects." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2019/09/southeastern-street-tree-arthropod.html
Available @ https://earth-and-space-news.blogspot.com/2019/09/southeastern-street-tree-arthropod.html
Marriner, Derdriu. 25 August 2019. "Cost Approach Approximates Plant Repair, Replacement or Restoration." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2019/08/cost-approach-approximates-plant-repair.html
Available @ https://earth-and-space-news.blogspot.com/2019/08/cost-approach-approximates-plant-repair.html
Marriner, Derdriu. 28 July 2019. "Indirect Watering Devices Are There for Newly Transplanted Urban Trees." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2019/07/indirect-watering-devices-are-there-for.html
Available @ https://earth-and-space-news.blogspot.com/2019/07/indirect-watering-devices-are-there-for.html
Marriner, Derdriu. 30 June 2019. "Plant Appraisal Data Collection Allies Off-Site and On-Site Research." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2019/06/plant-appraisal-data-collection-allies.html
Available @ https://earth-and-space-news.blogspot.com/2019/06/plant-appraisal-data-collection-allies.html
Marriner, Derdriu. 26 May 2019. "Wire Basket Removal or Wire Basket Retention: Girdling or Stable Roots." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2019/05/wire-basket-removal-or-wire-basket.html
Available @ https://earth-and-space-news.blogspot.com/2019/05/wire-basket-removal-or-wire-basket.html
Marriner, Derdriu. 28 April 2019. "Woody Plant Appraisal Data Collection for Shrubs, Trees and Vines." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2019/04/woody-plant-appraisal-data-collection.html
Available @ https://earth-and-space-news.blogspot.com/2019/04/woody-plant-appraisal-data-collection.html
Marriner, Derdriu. 30 March 2019. "Balancing Roadside Tree Benefits and Risk of Streetscape Tree Crashes." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2019/03/balancing-roadside-tree-benefits-and.html
Available @ https://earth-and-space-news.blogspot.com/2019/03/balancing-roadside-tree-benefits-and.html
Marriner, Derdriu. 17 February 2019. “Plant Appraisal Estimate, Scope, Data, Analysis, Reconciliation, Report.” Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2019/02/plant-appraisal-estimate-scope-data.html
Available @ https://earth-and-space-news.blogspot.com/2019/02/plant-appraisal-estimate-scope-data.html
Marriner, Derdriu. 27 January 2019. “Urban Tree Vulnerability in Residential Toronto, Ontario, Canada.” Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2019/01/urban-tree-vulnerability-in-residential.html
Available @ https://earth-and-space-news.blogspot.com/2019/01/urban-tree-vulnerability-in-residential.html
Marriner, Derdriu. 30 December 2018. "Plant Appraisal: Cost and Value Estimates and Economic Principles." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2018/12/plant-appraisal-cost-and-value.html
Available @ https://earth-and-space-news.blogspot.com/2018/12/plant-appraisal-cost-and-value.html
Marriner, Derdriu. 23 December 2018. "Six-Year Forest Health Ambassador Program of Oakville, Ontario, Canada." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2018/12/six-year-forest-health-ambassador.html
Available @ https://earth-and-space-news.blogspot.com/2018/12/six-year-forest-health-ambassador.html
Marriner, Derdriu. 21 October 2018. "Nursery Production Systems: Tough Urban Landscape Trees on Rough Sites." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2018/10/nursery-production-systems-tough-urban.html
Available @ https://earth-and-space-news.blogspot.com/2018/10/nursery-production-systems-tough-urban.html
Marriner, Derdriu. 16 September 2018. "Induced-Resistance Agents, Silicon Fertilizers, Synthetic Fungicides." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2018/09/induced-resistance-agents-silicon.html
Available @ https://earth-and-space-news.blogspot.com/2018/09/induced-resistance-agents-silicon.html
Marriner, Derdriu. 26 August 2018. "Nursery Production Systems for Successful Urban Tree Plantings." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2018/08/nursery-production-systems-for.html
Available @ https://earth-and-space-news.blogspot.com/2018/08/nursery-production-systems-for.html
Marriner, Derdriu. 29 July 2018. "Tree Roots Branch in Fabric Containers But Circle and Girdle Plastic." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2018/07/tree-roots-branch-in-fabric-containers.html
Available @ https://earth-and-space-news.blogspot.com/2018/07/tree-roots-branch-in-fabric-containers.html
Marriner, Derdriu. 30 June 2018. "Wood Decay Fungi Management of Terminal Urban Pathogens." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2018/06/wood-decay-fungi-management-of-terminal.html
Available @ https://earth-and-space-news.blogspot.com/2018/06/wood-decay-fungi-management-of-terminal.html
Marriner, Derdriu. 27 May 2018. "Downtown Commercial Streetscape Tree Populations in Toronto, Canada." Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2018/05/downtown-commercial-streetscape-tree.html
Available @ https://earth-and-space-news.blogspot.com/2018/05/downtown-commercial-streetscape-tree.html
Marriner, Derdriu. 28 April 2018. “Mushroom-Forming and Non-Mushroom-Forming Fungal Life Cycle Traits.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2018/04/mushroom-forming-and-non-mushroom.html
Available @ https://earth-and-space-news.blogspot.com/2018/04/mushroom-forming-and-non-mushroom.html
Marriner, Derdriu. 17 March 2018. “Emerald Ash Borer Rapid Response Community Preparedness Project.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2018/03/emerald-ash-borer-rapid-response.html
Available @ https://earth-and-space-news.blogspot.com/2018/03/emerald-ash-borer-rapid-response.html
Marriner, Derdriu. 17 February 2018. “Tree Retention by Arborists for Wildlife Habitat Friendly Tree Care.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2018/02/tree-retention-by-arborists-for.html
Available @ https://earth-and-space-news.blogspot.com/2018/02/tree-retention-by-arborists-for.html
Marriner, Derdriu. 14 January 2018. “Integrated Vegetation Management Study in North and South Yukon, Canada.” Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2018/01/integrated-vegetation-management-study.html
Available @ https://earth-and-space-news.blogspot.com/2018/01/integrated-vegetation-management-study.html
Marriner, Derdriu. 9 December 2017. “Tree Inventories: Preemptive and Proactive or Piecemeal and Reactive.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2017/12/tree-inventories-preemptive-and.html
Available @ https://earth-and-space-news.blogspot.com/2017/12/tree-inventories-preemptive-and.html
Marriner, Derdriu. 25 November 2017. “Chlorantraniliprole Reduced-Risk Insecticides Get Leaf-Eaters Not Bees.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2017/11/chlorantraniliprole-reduced-risk.html
Available @ https://earth-and-space-news.blogspot.com/2017/11/chlorantraniliprole-reduced-risk.html
Marriner, Derdriu. 28 October 2017. “Palm Plant Health Care: Abiotic, Biotic Stress Culture and Management.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2017/10/palm-plant-health-care-abiotic-biotic.html
Available @ https://earth-and-space-news.blogspot.com/2017/10/palm-plant-health-care-abiotic-biotic.html
Marriner, Derdriu. 16 September 2017. “Predawn Leaf Water Potentials Indicate Crown Dieback and Water Status.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2017/09/predawn-leaf-water-potentials-indicate.html
Available @ https://earth-and-space-news.blogspot.com/2017/09/predawn-leaf-water-potentials-indicate.html
Marriner, Derdriu. 19 August 2017. “Palm Tree Identification and Pruning of Native and Naturalizable Palms.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2017/08/palm-tree-identification-and-pruning-of.html
Available @ https://earth-and-space-news.blogspot.com/2017/08/palm-tree-identification-and-pruning-of.html
Marriner, Derdriu. 22 July 2017. “Commonly Planted, Potentially Phytoremediating Street Tree Species.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2017/07/commonly-planted-potentially.html
Available @ https://earth-and-space-news.blogspot.com/2017/07/commonly-planted-potentially.html
Marriner, Derdriu. 17 June 2017. “Root Loss From Root Pruning and Root Shaving of Stem-Girdling Roots.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2017/06/root-loss-from-root-pruning-and-root.html
Available @ https://earth-and-space-news.blogspot.com/2017/06/root-loss-from-root-pruning-and-root.html
Marriner, Derdriu. 27 May 2017. “Age and Canopy Area Cost Less and Tell More in Urban Tree Inventories.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2017/05/age-and-canopy-area-cost-less-and-tell.html
Available @ https://earth-and-space-news.blogspot.com/2017/05/age-and-canopy-area-cost-less-and-tell.html
Marriner, Derdriu. 22 April 2017. “Urban Root Management: Big Infrastructure, Small Space, Stressed Roots.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2017/04/urban-root-management-big.html
Available @ https://earth-and-space-news.blogspot.com/2017/04/urban-root-management-big.html
Marriner, Derdriu. 12 March 2017. “Flexural Elasticity Modulus: Trees and Watersprouts Bend or Break.” Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2017/03/flexural-elasticity-modulus-trees-and.html
Available @ https://earth-and-space-news.blogspot.com/2017/03/flexural-elasticity-modulus-trees-and.html
Marriner, Derdriu. 18 February 2017. “Plant Health Care Diagnostics When Plants and Places Wrong One Another.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2017/02/plant-health-care-diagnostics-when.html
Available @ https://earth-and-space-news.blogspot.com/2017/02/plant-health-care-diagnostics-when.html
Marriner, Derdriu. 14 January 2017. “Tree Fertilization for Fine Root Growth and Whole Root System Effects.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2017/01/tree-fertilization-for-fine-root-growth.html
Available @ https://earth-and-space-news.blogspot.com/2017/01/tree-fertilization-for-fine-root-growth.html
Marriner, Derdriu. 17 December 2016. “Abiotic and Biotic Stress in Low Maintenance Tree Health Care Programs.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2016/12/abiotic-and-biotic-stress-in-low.html
Available @ https://earth-and-space-news.blogspot.com/2016/12/abiotic-and-biotic-stress-in-low.html
Marriner, Derdriu. 19 November 2016. “Organic Amendments to Compacted Degraded Urban Highway Roadsides.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2016/11/organic-amendments-to-compacted.html
Available @ https://earth-and-space-news.blogspot.com/2016/11/organic-amendments-to-compacted.html
Marriner, Derdriu. 15 October 2016. “Tree Protection Zones by Arborists for All Construction Project Phases.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2016/10/tree-protection-zones-by-arborists-for.html
Available @ https://earth-and-space-news.blogspot.com/2016/10/tree-protection-zones-by-arborists-for.html
Marriner, Derdriu. 17 September 2016. “Stormwater Runoff Landscaping With Urban Canopy Cover and Groundcover.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2016/09/stormwater-runoff-landscaping-with.html
Available @ https://earth-and-space-news.blogspot.com/2016/09/stormwater-runoff-landscaping-with.html
Marriner, Derdriu. 13 August 2016. “Changing Places: Tree Nutrient Movement Down, Tree Water Movement Up.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2016/08/changing-places-tree-nutrient-movement.html
Available @ https://earth-and-space-news.blogspot.com/2016/08/changing-places-tree-nutrient-movement.html
Marriner, Derdriu. 16 July 2016. “Treated or Untreated Oriental Bittersweet Vine Management Cut-Stumping.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2016/07/treated-or-untreated-oriental.html
Available @ https://earth-and-space-news.blogspot.com/2016/07/treated-or-untreated-oriental.html
Marriner, Derdriu. 18 June 2016. “Tree Injection Site Procedures: Manufacturer's Instructions and Labels.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2016/06/tree-injection-site-procedures.html
Available @ https://earth-and-space-news.blogspot.com/2016/06/tree-injection-site-procedures.html
Marriner, Derdriu. 22 May 2016. “Electrical Utility Area Temperate Urban Street Trees: Pruned Regrowth.” Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2016/05/electrical-utility-area-temperate-urban.html
Available @ https://earth-and-space-news.blogspot.com/2016/05/electrical-utility-area-temperate-urban.html
Marriner, Derdriu. 16 April 2016. “Tree Injection Methods: Treatment Option in Integrated Pest Management.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2016/04/tree-injection-methods-treatment-option.html
Available @ https://earth-and-space-news.blogspot.com/2016/04/tree-injection-methods-treatment-option.html
Marriner, Derdriu. 6 March 2016. “Bare-Rooted Ornamental Urban Transplants: Amendments Against Mortality.” Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2016/03/bare-rooted-ornamental-urban.html
Available @ https://earth-and-space-news.blogspot.com/2016/03/bare-rooted-ornamental-urban.html
Marriner, Derdriu. 28 February 2016. “Bark Protective Survival Mechanisms Foil Deprivation, Injury, Invasion.” Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2016/02/bark-protective-survival-mechanisms.html
Available @ https://earth-and-space-news.blogspot.com/2016/02/bark-protective-survival-mechanisms.html
Marriner, Derdriu. 23 January 2016. "LITA Model: Linear Index of Tree Appraisal of Large Urban Swedish Trees." Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2016/01/lita-model-linear-index-of-tree.html
Available @ https://earth-and-space-news.blogspot.com/2016/01/lita-model-linear-index-of-tree.html
Marriner, Derdriu. 19 December 2015. “Tree Lightning Protection Systems: Site, Soil, Species True Designs.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2015/12/tree-lightning-protection-systems-site.html
Available @ https://earth-and-space-news.blogspot.com/2015/12/tree-lightning-protection-systems-site.html
Marriner, Derdriu. 24 October 2015. “Tree Lightning Protection Systems Tailored to Sites, Soils, Species.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2015/10/tree-lightning-protection-systems.html
Available @ https://earth-and-space-news.blogspot.com/2015/10/tree-lightning-protection-systems.html
Marriner, Derdriu. 15 August 2015. “Tree Friendly Urban Soil Management: Amend, Fertilize, Mulch, Till!” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2015/08/tree-friendly-urban-soil-management.html
Available @ https://earth-and-space-news.blogspot.com/2015/08/tree-friendly-urban-soil-management.html
Marriner, Derdriu. 13 June 2015. “Tree Friendly Urban Soil Management: Assemble, Assess, Assist, Astound.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2015/06/tree-friendly-urban-soil-management.html
Available @ https://earth-and-space-news.blogspot.com/2015/06/tree-friendly-urban-soil-management.html
Marriner, Derdriu. 18 April 2015. “Tree Wound Responses: Healthy Wound Closures by Callus and Woundwood.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2015/04/tree-wound-responses-healthy-wound.html
Available @ https://earth-and-space-news.blogspot.com/2015/04/tree-wound-responses-healthy-wound.html
Marriner, Derdriu. 15 February 2015. “Urban Forest Maintenance and Non-Maintenance Costs and Benefits.” Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2015/02/urban-forest-maintenance-and-non.html
Available @ https://earth-and-space-news.blogspot.com/2015/02/urban-forest-maintenance-and-non.html
Marriner, Derdriu. 13 December 2014. “Tree Dwelling Symbionts: Dodder, Lichen, Mistletoe, Moss and Woe-Vine.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2014/12/tree-dwelling-symbionts-dodder-lichen.html
Available @ https://earth-and-space-news.blogspot.com/2014/12/tree-dwelling-symbionts-dodder-lichen.html
Marriner, Derdriu. 18 October 2014. “Tree Cable Installation Systems Lessen Target Impact From Tree Failure.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2014/10/tree-cable-installation-systems-lessen.html
Available @ https://earth-and-space-news.blogspot.com/2014/10/tree-cable-installation-systems-lessen.html
Marriner, Derdriu. 16 August 2014. “Flood Tolerant Trees in Worst-Case Floodplain and Urbanized Scenarios.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2014/08/flood-tolerant-trees-in-worst-case.html
Available @ https://earth-and-space-news.blogspot.com/2014/08/flood-tolerant-trees-in-worst-case.html
Marriner, Derdriu. 14 June 2014. “Integrated Vegetation Management of Plants in Utility Rights-of-Way.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2014/06/integrated-vegetation-management-of.html
Available @ https://earth-and-space-news.blogspot.com/2014/06/integrated-vegetation-management-of.html
Marriner, Derdriu. 12 April 2014. “Tree Twig Identification: Buds, Bundle Scars, Leaf Drops, Leaf Scars.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2014/04/tree-twig-identification-buds-bundle.html
Available @ https://earth-and-space-news.blogspot.com/2014/04/tree-twig-identification-buds-bundle.html
Marriner, Derdriu. 15 February 2014. “Tree Twig Anatomy: Ecosystem Stress, Growth Rates, Winter Identification.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2014/02/tree-twig-anatomy-ecosystem-stress.html
Available @ https://earth-and-space-news.blogspot.com/2014/02/tree-twig-anatomy-ecosystem-stress.html
Marriner, Derdriu. 14 December 2013. “Community and Tree Safety Awareness During Line- and Road-Clearances.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2013/12/community-and-tree-safety-awareness.html
Available @ https://earth-and-space-news.blogspot.com/2013/12/community-and-tree-safety-awareness.html
Marriner, Derdriu. 13 October 2013. “Chain-Saw Gear and Tree Work Related Personal Protective Equipment.” Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2013/10/chain-saw-gear-and-tree-work-related.html
Available @ https://earth-and-space-news.blogspot.com/2013/10/chain-saw-gear-and-tree-work-related.html
Marriner, Derdriu. 12 October 2013. “Storm Damaged Tree Clearances: Matched Teamwork of People to Equipment.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2013/10/storm-damaged-tree-clearances-matched.html
Available @ https://earth-and-space-news.blogspot.com/2013/10/storm-damaged-tree-clearances-matched.html
Marriner, Derdriu. 17 August 2013. “Storm Induced Tree Damage Assessments: Pre-Storm Planned Preparedness.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2013/08/storm-induced-tree-damage-assessments.html
Available @ https://earth-and-space-news.blogspot.com/2013/08/storm-induced-tree-damage-assessments.html
Marriner, Derdriu. 15 June 2013. “Storm Induced Tree Failures From Heavy Tree Weights and Weather Loads.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2013/06/storm-induced-tree-failures-from-heavy.html
Available @ https://earth-and-space-news.blogspot.com/2013/06/storm-induced-tree-failures-from-heavy.html
Marriner, Derdriu. 13 April 2013. “Urban Tree Root Management Concerns: Defects, Digs, Dirt, Disturbance.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2013/04/urban-tree-root-management-concerns.html
Available @ https://earth-and-space-news.blogspot.com/2013/04/urban-tree-root-management-concerns.html
Marriner, Derdriu. 16 February 2013. “Tree Friendly Beneficial Soil Microbes: Inoculations and Occurrences.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2013/02/tree-friendly-beneficial-soil-microbes.html
Available @ https://earth-and-space-news.blogspot.com/2013/02/tree-friendly-beneficial-soil-microbes.html
Marriner, Derdriu. 15 December 2012. “Healthy Urban Tree Root Crown Balances: Soil Properties, Soil Volumes.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2012/12/healthy-urban-tree-root-crown-balances.html
Available @ https://earth-and-space-news.blogspot.com/2012/12/healthy-urban-tree-root-crown-balances.html
Marriner, Derdriu. 13 October 2012. “Tree Adaptive Growth: Tree Risk Assessment of Tree Failure, Tree Strength.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2012/10/tree-adaptive-growth-tree-risk.html
Available @ https://earth-and-space-news.blogspot.com/2012/10/tree-adaptive-growth-tree-risk.html
Marriner, Derdriu. 11 August 2012. “Tree Risk Assessment Mitigation Reports: Tree Removal, Tree Retention?” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2012/08/tree-risk-assessment-mitigation-reports.html
Available @ https://earth-and-space-news.blogspot.com/2012/08/tree-risk-assessment-mitigation-reports.html
Marriner, Derdriu. 16 June 2012. “Internally Stressed, Response Growing, Wind Loaded Tree Strength.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2012/06/internally-stressed-response-growing.html
Available @ https://earth-and-space-news.blogspot.com/2012/06/internally-stressed-response-growing.html
Marriner, Derdriu. 14 April 2012. “Three Tree Risk Assessment Levels: Limited Visual, Basic and Advanced.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2012/04/three-tree-risk-assessment-levels.html
Available @ https://earth-and-space-news.blogspot.com/2012/04/three-tree-risk-assessment-levels.html
Marriner, Derdriu. 19 February 2012. “Qualitative Tree Risk Assessment: Risk Ratings for Targets and Trees.” Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2012/02/qualitative-tree-risk-assessment-risk.html
Available @ https://earth-and-space-news.blogspot.com/2012/02/qualitative-tree-risk-assessment-risk.html
Marriner, Derdriu. 18 February 2012. “Qualitative Tree Risk Assessment: Falling Trees Impacting Targets.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2012/02/qualitative-tree-risk-assessment.html
Available @ https://earth-and-space-news.blogspot.com/2012/02/qualitative-tree-risk-assessment.html
Marriner, Derdriu. 10 December 2011. “Tree Risk Assessment: Tree Failures From Defects and From Wind Loads.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2011/12/tree-risk-assessment-tree-failures-from.html
Available @ https://earth-and-space-news.blogspot.com/2011/12/tree-risk-assessment-tree-failures-from.html
Marriner, Derdriu. 15 October 2011. “Five Tree Felling Plan Steps for Successful Removals and Worker Safety.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2011/10/five-tree-felling-plan-steps-for.html
Available @ https://earth-and-space-news.blogspot.com/2011/10/five-tree-felling-plan-steps-for.html
Marriner, Derdriu. 13 August 2011. “Natives and Non-Natives as Successfully Urbanized Plant Species.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2011/08/natives-and-non-natives-as-successfully.html
Available @ https://earth-and-space-news.blogspot.com/2011/08/natives-and-non-natives-as-successfully.html
Marriner, Derdriu. 11 June 2011. “Tree Ring Patterns for Ecosystem Ages, Dates, Health and Stress.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2011/06/tree-ring-patterns-for-ecosystem-ages.html
Available @ https://earth-and-space-news.blogspot.com/2011/06/tree-ring-patterns-for-ecosystem-ages.html
Marriner, Derdriu. 9 April 2011. “Benignly Ugly Tree Disorders: Oak Galls, Powdery Mildew, Sooty Mold, Tar Spot.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2011/04/benignly-ugly-tree-disorders-oak-galls.html
Available @ https://earth-and-space-news.blogspot.com/2011/04/benignly-ugly-tree-disorders-oak-galls.html
Marriner, Derdriu. 12 February 2011. “Tree Load Can Turn Tree Health Into Tree Failure or Tree Fatigue.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2011/02/tree-load-can-turn-tree-health-into.html
Available @ https://earth-and-space-news.blogspot.com/2011/02/tree-load-can-turn-tree-health-into.html
Marriner, Derdriu. 22 December 2010. “Tree Electrical Safety Knowledge, Precautions, Risks and Standards.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2010/12/tree-electrical-safety-knowledge.html
Available @ https://earth-and-space-news.blogspot.com/2010/12/tree-electrical-safety-knowledge.html