Salmon Snapshots

Lagunitas Creek

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2011/12 Population

Estimate of wild adult fish

Coho

Oncorhynchus kisutch

Chinook

Oncorhynchus tshawytscha

Steelhead

Oncorhynchus mykiss

What we have 274 0 >546
What we need 2,600§ * 1,900+
Notes:
Population estimate (derived from redd counts, complete census except for Bear Valley Creek) provided by California Department of Fish and Wildlife. Zeros represent no spawners detected. Data are preliminary and subject to change.
 
§ Coho salmon in Lagunitas Creek are federally listed as endangered. Spawning adult fish recovery targets represent the biological conditions National Marine Fisheries Service would use to delist the species and remove them from the Federal List of Endangered and Threatened Wildlife and Plants (50 CFR 223.102)(NMFS 2012a).
 

Steelhead in Lagunitas are federally listed as threatened. NMFS recovery target not defined. Lagunitas Creek is south of the currently accepted range of the California Coast Chinook Evolutionary Significant Unit (ESU) (NMFS 2005).

+ Steelhead in Lagunitas are federally listed as threatened; however,  NMFS recovery target not yet defined. Spawning adult fish abundance number listed here is characteristic of the population having a high probability of long-term (>100 years) persistence  (Spence et al. 2012).      

The 2011/12 snapshot is defined as fall 2011 to spring 2012, as per when salmon and steelhead return from the ocean to spawn. Fall Chinook spawning season is fall 2011. Coho season is fall through early January 2012. Steelhead season can start in fall 2011 but is primarily winter and spring 2012. Spring Chinook season is spring 2012.

 

References

Bjorkstedt, E.P., et. al. 2005. An Analysis of Historical Population Structure for Evolutionarily Significant Units of Chinook Salmon, Coho Salmon, and Steelhead in the North-Central California Coast Recovery Domain. National Marine Fisheries Service. Southwest Fisheries Science Center. October 2005.

National Marine Fisheries Service. 2012a. Final Recovery Plan for Central California Coast coho salmon Evolutionarily Significant Unit. National Marine Fisheries Service, Southwest Region, Santa Rosa, California.

Spence, B.C., Bjorkstedt, E.P., Paddock, S. and L. Nanus. 2012. Updates to Biological Viability Criteria for Threatened Steelhead Populations in the North-Central California Coast Recovery Domain. National Marine Fisheries Service. Southwest Fisheries Science Center. March 23, 2012.

 

fish images © Joe Tomelleri

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