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Fisheries reconciliation: Managing aquatic habitats in the face of climate change

Fisheries reconciliation: Managing aquatic habitats in the face of climate change. http://www.bcdc.ca.gov/media/planning/CCP_Petaluma.jpg. Joshua Israel Department of Animal Sciences Center for Watershed Sciences UC Davis. Lessons for the Future (Lackey, in press):.

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Fisheries reconciliation: Managing aquatic habitats in the face of climate change

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  1. Fisheries reconciliation:Managing aquatic habitats in the face of climate change http://www.bcdc.ca.gov/media/planning/CCP_Petaluma.jpg Joshua Israel Department of Animal Sciences Center for Watershed Sciences UC Davis

  2. Lessons for the Future (Lackey, in press): The marketplace is fundamental Competition for scarce resources is unyielding Humans exert a pervasive influence 4. Individuals select from among desirable alternatives 5. Policy domesticationis ubiquitous 6. Delusional reality is tempting and widespread www.doi.gov

  3. Climate change effects on fish habitat Water temp increases Increased flooding & sediment Decreased natural summer flows Increased salinity DWR Possible alteration of ocean currents and productivity NMFS

  4. Climate change and restoration Often wrongly compared to extended drought…. tax evasion Reconciling climate change Adapt restoration to take advantage of Compatibility, Agreement, and Resignation …more like an invasive species bankruptcy usgs

  5. Compatability: Baylands Ecosystem Goals Project (1999) North Bay South Bay Tidal marsh habitat • Increased water circulation and tidal prism Shallow Channel habitat • Eelgrass beds restoration

  6. Different Compatability: Coastal salmonids Coho and steelhead juvenile oversummer Chinook juveniles outmigrate • Managed flows • Increased riparian habitats • Increased estuarine habitats Warm Springs Dam http://www.lib.noaa.gov/japan/aquaculture/events/32trip.htm Samantha Dorger, www.baynature.com

  7. Agreement: Bay Fish Community Cold temperate fishStarry flounderEnglish SoleRockfishCA herringDungeness crab salmon Warm subtropic fish California halibut Pacific sardineWhite seabassCA grunionPacific blue crab SF estuary in center of California current upwelling NMFS ak.aoos.org/op/data.php?region=YAK&name=pdo

  8. Agreement: Bay Fish Community South Bay increasingly used by warmer water species: CA halibut, CA grunion. Poorer recruitment of cold temperate species: Brown rockfish, Dungeness crab, salmon Migration of cold sp. adults north, temperature related mortalities, shifts in critical productivity outside GG McFarlane et al. (2008)Cal Neva AFS 2008

  9. Resignation: Delta smelt • Rarely occur in waters above 20°C • Center of abundance in channel of Sacramento River and upper portion of Delta • Climate change will leave little or no suitable habitat in summer for Delta smelt Bennett, SFEWS 2005

  10. A future full of opportunities and lessons • Resignation and extinction should not be accepted. • Preserving and developing fish habitat also provides flood protection, water quality protection, groundwater recharge and fisheries. • Identify compatible habitat restoration solutions for current targets • Agree that SF Bay’s fish community may be more diverse than previously thought, and develop projects for additional species

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