Non-natal Nearshore Rearing of Salmon
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In 2003 staff at the Skagit River Systems Cooperative found higher then typical rearing of chinook salmon in small quiescent Embayments in the Whidbey Basin. This led to the pocket estuary hypothesis, which has driven restoration planning in the nearshore and development of an extensive body of work (see:Nearshore habitat planning for salmon recovery). Successive work in observing juvenile salmon use of estuaries (see: Evaluating Salmon Rearing Limitations in River Deltas) has suggested that during large out-migrations, limited space in deltas results in fish seeking habitats in the nearshore. Regulatory work to quantify nearshore habitat services as part of the Puget Sound Nearshore Habitat Conservation Calculator encouraged the reconsideration of the evidence that describes patterns of non-natal rearing of salmon along River Deltas, Beaches, Embayments, and Headlands. This led to PSEMP support for an evidence synthesis project as part of the Science Sprints to Support Regulation effort, which incorporated use of this wiki.
Notes[edit]
- Beginning with File:Fresh 2006 juvenile salmon in nearshore.pdf nearshore rearing has focused on Chinook Salmon and Chum Salmon.
- File:Lambert & Chamberlin 2023 non-natal rearing.pdf aimed to summarize evidence on non-natal rearing.
Questions[edit]
- How does residence time affect our understanding of more common salmon density observations?
- How does non-natal rearing function in locations where sheltered shallow water habitat is very abundant (South Puget Sound), compared to locations where these habitats are less common?
- How does growth rate and ultimately marine survival describe the effectiveness of non-natal rearing?
2023 Science Sprint Evidence[edit]
File:Lambert & Chamberlin 2023 non-natal rearing.pdf synthesizes existing evidence about the use of non-natal waters including non-natal coastal streams and coastal embayments. The following items were identified as critical pieces of evidence in that analysis:
- Apgar et al. 2020 range-wide subyearling chinook alternative strategies
- Beamer et al 2003 importance of non-natal pocket estuaries
- Beamer et al 2006 whidbey pocket estuary fish
- Beamer et al 2013 chinook salmon non-natal stream rearing
- Bennett et al. 2014 early coho outmigrants contribute to adult spawning
- Bloch et al. 2019 coastal stream and embayment restoration prioritization
- ESA et al. 2022 coastal stream and embayment fish access framework
- Glasgow and Jorgenson 2022 eDNA identifies non-natal fish use
- Hayes et al. 2019 non-natal marine basin use
- Koski 2009 coho nomads
- Tuohy et al. 2018 chum non-natal habitat use.pdf
Salmon and Embayment/Beach Documents
- Beamer et al 2003 importance of non-natal pocket estuaries
- Beamer et al 2006 whidbey pocket estuary fish
- Beechie et al 2017 salmon habitat status monitoring
- Bloch et al. 2019 coastal stream and embayment restoration prioritization
- Brennan et al 2003 nearshore salmon central puget sound
- Cornu et al 2008 large wood placement in tidal wetlands
- Ehinger et al 2015 nearshore habitat value HEA.pdf
- ESA et al. 2022 coastal stream and embayment fish access framework
- Fresh 2006 juvenile salmon in nearshore
- Fresh et al 2006 sinclair inlet salmon use
- Hall et al 2019 DRAFT pocket estuary inventory protocol
- Koski 2009 coho nomads
- Lambert & Chamberlin 2023 non-natal rearing
- Redmond et al 2005 nearshore salmon recovery plan
- Rossenkotter et al 2007 nearshore salmon recovery gap analysis
- Simenstad & Cordell 2000 habitat assessment for salmon
- Toft & Heerhartz 2015 juvenile salmon movement and shoreline armoring
- Tuohy et al. 2018 chum non-natal habitat use.pdf
- Wait et al 2007 west whidbey nearshore fish use.pdf
- Whitman et al 2012 san juan salmon recovery planning.pdf
Other Salmon and Embayment/Beach Pages
- Arbeider et al 2023 salmon estuary growth and residence compilation
- Beach Food Webs and Biodiversity
- Kilisut Restoration
- Maximizing Benefits of Shoreline Armor Removal
- Meadowdale: Informing Puget Sound coastal stream restoration
- Nearshore Salmon Recovery Planning
- Puget Sound Nearshore Habitat Conservation Calculator
- Puget Sound Tidal Restriction and Wetland Mapping
- Tidal Fish Passage & Connectivity
