2009 WWF Science for Nature Symposium.


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2009 WWF Science for Nature Symposium. Adjustment Strategies for Freshwater Ecosystems in ... National untamed life. shelter dewatering. Surface water eutrophication. Current arrangements ...
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Slide 1

Adjustment Strategies for Freshwater Ecosystems in the Pacific NW 2009 WWF Science for Nature Symposium Allison Aldous & Leslie Bach, The Nature Conservancy photograph © Rick McEwan

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© Rick McEwan

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© Laura Moran

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© Rick McEwan

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# GDEs 5 4 3 2 1 Distribution of groundwater-ward biological systems Brown et al. 2009

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Fish kills National natural life asylum dewatering Surface water eutrophication Salmon fisheries terminations

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Current arrangements Habitat rebuilding wetlands streams riparian territories Klamath Basin Restoration Agreement Remove 4 dams Retire some watering system water rights Reliable water distribution for agribusiness

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Salathé 2007 Not Always Practical Availability of downscaled atmosphere models Availability of time arrangement information Expertise, assets High level of vulnerability GCMs downscaling hydrologic models freshwater biological systems reactions Hamlet et al. 2008 Tague et al. 2008

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Snowmelt-commanded Groundwater + snowmelt Groundwater-overwhelmed

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Snowmelt ruled hydrology all out snowpack Loss of snowpack Higher Temperatures Rise in solidifying rise High height Mid-rise Courtesy T. Beechie more winter rain prior snowmelt more rain-on-snow occasions prior summer low stream lower summer baseflow Low rise

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less snowpack + prior spillover + higher rise snow zone + higher ET = less revive + hotter energize + less, hotter release adjusted from Vaccaro 2008. Groundwater-ruled hydrology mountain-front floodplain/wetland spatially circulated Winter et al. 1998

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Winter precip ↑ 17% baseflow ↓ 20% Hydrograph shifts by 15 days

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Adaptation choices for snowmelt-ruled hydrology Factor changing water accessibility into settlement understanding Land administration in the snowpack zone Increase water stockpiling in biological communities wetland/riparian insurance & reclamation reconnect channels with their floodplains Temp Loss of snowpack

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Adaptation choices for groundwater-subordinate biological communities Factor changing water accessibility into settlement assention Land administration in the snowpack zone Wetland/riparian assurance & rebuilding Reconnect channels with their floodplains Set natural water necessities for groundwater mountain-front floodplain/wetland spatially appropriated Winter et al. 1998

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How is this distinctive? Expect future water accessibility Emphasis on groundwater energize Emphasis on mid-height snowpack Prioritize water stockpiling in biological communities

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