Drs Zhang and Mann Ask Green Stormwater Infrastructure: Does It Work?

Summary: Drs Wei Zhang and Gordon Mann ask, as Green Industry Webinar Fri., Aug. 21, 2026, at noon-1:30 p.m. EDT, Green Stormwater Infrastructure: Does It Work?

"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.

Drs Wei Zhang and Gordon Mann ask "Green Stormwater Infrastructure: Does It Work?" in Green Industry Webinar Friday, Aug. 21, 2026.
Graphic "Where Stormwater Flows, Everything Goes.":
yavapaiflood, via Instagram Jan. 9, 2026

Drs Wei Zhang and Gordon Mann ask, as Green Industry Webinar Fri., Aug. 21, 2026, at noon-1:30 p.m. Eastern Daylight Time/EDT (4:00-5:30 p.m. Greenwich Mean Time/GMT), Green Stormwater Infrastructure: Does It Work?

Green Stormwater Infrastructure (GSI) battles peak stormwater-runoff volume and pollutants even as its grass-, shrub-, tree-vegetation Low Impact Development (LID) benefit recreational purposes and urban greenspaces. GSI/LID systems consider woody-plant bark, foliage and roots culling stormwater pollutants even as beneficial insects and soil microorganisms contribute to soil breakdown of those pollutants. They defer to healthy plant-transpiration, soil-evaporation evapotranspiration and healthy soil-water infiltration rates even as additional pollutants derive from plants dying before their maturity and healthy replacements.

Such plants endure such stresses as coastal- and northern-area deicing salts; drought-entailed water stress; heat-island effects; organic-matter depletion; reclaimed wastewater-sourced saline water; soil compaction; soil-moisture fluctuation.

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Acknowledgment

My special thanks to talented artists and photographers/concerned organizations who make their fine images available on the internet.

Image credits:

Drs Wei Zhang and Gordon Mann ask "Green Stormwater Infrastructure: Does It Work?" in Green Industry Webinar Friday, Aug. 21, 2026.
Graphic "Where Stormwater Flows, Everything Goes.":
yavapaiflood, via Instagram Jan. 9, 2026m @ https://www.instagram.com/p/DTS6q1oFPad/

IMAGE 2

For further information:

Gilman, Ed. 2011. An Illustrated Guide to Pruning. Third Edition. Boston MA: Cengage.

Hayes, Ed. 2001. Evaluating Tree Defects. Revised, Special Edition. Rochester MN: Safe Trees.

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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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

STORM WATER MANAGEMENT and sewage spills Potomac river tunnel project sewage spill heavy rain Gemini estimated 15-35k news reports for last 12 months LOW IMPACT DEVELOPMENT systems and practices use mimic natural processes result in infiltration evapotranspiration use of stormwater protect water quality associated aquatic habitat BENEFITS LID improved water air quality, reduced stormwater runoff rate, reduce load conventional stormwater treatment, increased natural habitat recreational space, improved groundwater recharge, community beautification and increased property values, multifunctional space use, both sustainable and costeffective GREEN STORMWATER INFRASTRUCTURE use planted areas treat first flush dirty water off roads parking lots impervious surfaces MORE EXAMPLES infiltration beds, bioretention swale, urban bioswale, rain garden DESIGNED for urban environment to replace centralized css with distributed ms4 rvah20 green infrastructure master plan for richmond va THE COSTS AND BENEFITS OF URBAN TREES costsbenefits over time with without maintenance cost with without maintenance phase in lifecycle immature semimature mature senescent time maintenance activities planting pruning removal to tree urban forest structure establishment survival growth condition size canopy cover leaf area to function evaporanspiration photosynthesis intercept rain to benefits stormwater runoff reduction carbon stored to value millions dollars every dollar planting caring 2 to 5 times investment cleaner air lower energy costs improved water quality storm water control increased property values health citizens bigger canopy bigger benefits 2011 us forest service study USDA FOREST SERVICE SUSTAIING AMERICAS URBAN TREES AND FORES 2010 green infrastructure sustain environmental quality human wellbeing WHAT CAN TREES DO TO STORMWATER BALLARD CORNERS PARK SEATTLE WA raingarden modular subsurface soil cell 18 inch pedestrian stepout area 4 to in curb bulb out per plans new sidewalk with decorative pattern 4 inch pedestrian curb curb cut inlet outlet weathered steel weir bioretention soil native soil right after installation, half year later blog started by residents ask cit remove them 29th ave TREE WELL FAIRFAX COUNTY first flush overflow McLean metro station 4/27/2019 MAJOR breakthrough for lumber industry FREDERICKSBURG va 8/2019 aurantiaco plasticus name by WZ CHALLENGES faced by GSI professionals 36 stormwater experts do you use green infrastructures for stormwater management 33 y 3 noneverdoesntwork, what is no 1 challenge of GI 21 maintenance 10 construction 1 regulation 1 misunderstanding, what is the no 1 problem associated with maintenance 16 plantsetablishment 3 sediments 2 trainingvetting contractor, what is no 1 problem with construction 4 soil work VA 711 project SEDIMENTS during construction buy one mowing service get one pruning service free 2 yrs later july 2021 6 yrs jun 1 2025 THE process of GSI plan regional city community level planning transportation waste water water environmental, preparation design site info soil work hydrology design construction civil engineering heavy construction eq does anyone do another soil work at this point operations and maintenance foot traffic from maintenance crew lawn care eq how about soil compaction infiltration rate at this point SOIL compaction and planting failure soil bulk density g/cm3 or lb/ft3 1.25-1.34 78-84, 1.34-1.44 84-90 INFILTRATION rates in rain garden 10 times lower than soil prior construction STRESSES on vegetation in gsi water, quality of stock root girdling root planting depth healthy root development diseases WHAT is the problem with plants in gsi two unique intrinsic features gi flooded during storms high soil moisture, drains dries fast make room for future storms very porous media dries fast low soil moisture between storms during drought OVERWATERING lose more plants to overwatering than any other issues dan hildebrand vp coowner james river nurseries inc richmond va must check soil because over underwatering look similar PLANT available water gravitational field capacity available water permanent wilting point unavailable water sand loamysand sandyloam finesandyloam loam siltloam siltyclayloam clayloam siltyclay clay maybe use solid water with air pockets instead of liquid water HOW does solid water with airpockets work charging with rainirrigationstormwater via osmosis SWAP both top bottom layers permeable SWAP vs watering bags impermeable to waterair block rainnoselfrecharging releasewater even when soil soaking wet TWO containers with same count of soil water watering swap which one lasts longer and keeps properly hydrated SWAP trial mclean 4/27/2019 retain water stabilize soil moisture save plants reduce maintenance PORTLAND 909 e burnside st oregon jun 2019 aug 2019 sep 2019 watering bag vs SWAP Fredericksburg jul 2020 drought SWAP reduces soil moisture when lots water raises when drought WATERING vs regulating soil moisture DO not specify absorbent gel materials in LID GSI growth media scenario 1 mix too much pop trees out as absorbent gel materials expand 150 to 400 times their own weight vs scenario 2 during dry spells growth media shrink leave gaps between media and surrounding soil or container wall next rain wil bypass media first flush stormwater THE main difference between solid water with air pockets with superabsorbent polymers hydrogel conventional use hydrogel runoff hydrogel pellets infiltration solid water with air pockets SOIL bulk density and root growth soil texture SOil for rain garden or from farms nurseries bulk density 1.4g/cc compacted surrounding sil bulk density 1.8-2.0 COMPACTED soil small trees transplanted BONSAI chinese juniper forest juniperus chinensis 45 years 3 ft tall 12in spread natural environment 50-60 ft tall 15 to 20 ft spread in wild SALT sources roads sidewalks parking lots here deicing IS sodium chloride in fertilizers IRRIGATION water and salt people use too much salt HOW to remove salt from soil drainage and time for diffusion gypsum calcium sulfate or lime calcium ions HOW remove salt from ground SOIL particles and their surface chemistry sodium chloride na+ SURFACE area versus particle size for certain volume soil finer soil particles ANY other methods low salt concentration less damage, leaching washing only way irrigation systems on strike regions need large amount salt high precipitation surfaces need salts typically impervious large stormwater runoff idea catch store RINSE with collected rain water EXPERIMENT setup without swap black RESULTS swap no protection SOIL genomics Gillisia limnaea, halomonas taeanensis like salt halotolerant salt tolerant halophilic saltloving bacteria become detectible SUMMARY GSI does it work QUESTIONS Q1 avoid compaction for tree protection use woodchip mulch earthworms need to be fed with organic matter Q2 tree absorbing most stormwater evergreens with needles highest deciduous third coarser bark holds more water biggersize tree grades need Q3 swap getting Q4 solarpanel ordinance less trees Q5 best infiltration rate dependent upon surrounding soil soaking more than 10 hours not good soil type determines Q6 If soil compaction from construction occurs, is there anything we can include in the specs to require scarification or something otherwise to improve soil porosity/density/infiltration rates post construction? What infiltration rate (in/hr) do you recommend to make sure soils are draining, but also holding enough water to support the plant live? Ballard rain gardens failed due to lack of infiltration capacity But if the ditch and curb cut were left and trees planted on the slopes, would it still work for infiltration? We hear from clients that bioretention soil has too much sand and very little organic material to support long-term tree survivability. Do you have good bioretention soil specs that support long-term success? I'm having challenges with residents wanting to remove trees for solar panels. I'm looking into community solar but can you recommend any materials or direction for this argument I thought sewage and storm systems were separate? How does stormwater management interact with the sewage system? In redevelopment situations, the effort to revert to natural plantings often fails due to poor soil quality and poor drainage Sewer systems and Stormwater systems should be separate, Older systems were Combined. Combined sewer overflows still occur when rain enters sewers and they overflow to stormwater. Does anyone specify soil bulk density measures when the contractor places soil? That measure seems as important as soil texture, organic matter and depth. Floodplain species have evolved to tolerate both intermittent flooding, and long periods of drought in between flood stage. But most trees in designed landscapes are cultivars developed for beauty, symmetry, good color. And may not adapt well my experience has been that the roots go up into the SWAP instead of down into the soil. Is there a certain time to leave these on Are there any environmental concerns of using hydrogels (SWAP) for water management as many (if not all) are polyacrylamide based (as used in diapers) Can you send the study about which tree species soak up more stormwater? The image (does $ grow on trees) has planting in the tree planting area: can you talk planting in tree islands in urban areas? (not what plant species to use but what to "look for" ie space needed over what is considered for just trees, etc) Is the reservoir (Chicago) meant to weep? That is: it looks like a limestone wall ... limestone weeps... are they wanting to use the weeping to filter waste bacteria before it goes into the river? Is there a suggested recovery time following a storm for these infiltration practices? Is this dependent on the plantings? are tree diapers toxic if they break? how long does the swap system retain water? (How often do you need to refill it, especially compared to traditional watering bags?) I'm interested in your methodology for monitoring the different types of GSI. Is it published somewhere (online)? Solid water would work well to help establish trees but their feeder roots will eventually outgrow the bag location, how do you provide water to those new roots as the tree grows? What is the best and most succinct way to incorporate this information/your findings into our soil and planting specs for GSI? One of the greatest challenges I face with green Infrastructure is that once the ribbon is cut, there seems to be few contractors that understand maintenance practices. Sites end up harboring invasive weeds that end up contaminating the watersheds. i see lots of urban trees just planted with tree wrap left over a year. Some still have it. Doesn't this cause pests and disease? What purpose does tree wrap serve? Is the solid water proprietary and which states can access it? Also, are you saying that that product has the marine bacteria in it that helps remove salt? What studies have been done on the solid water system with regard to fire ants? (Fire ants in the south (at least TX & OK) LOVE the bags bc they protect the nest in the winter & in the summer they can plug holes to direct water We design the irrigation system with soil moisture sensors in the soil cell unit to monitor moisture levels and irrigate with landscape drip line only when the sensors indicate it is necessary. Nearly eliminates water waste and is there for droughts Do you have a recommended storm percolation/infiltration recovery period for these green systems following a precipitation event? When is a good time to install "solid water"? Do you recommend starting on day 1 of installation? do you remove it once the tree has established? At planting