Gillnet data for fishes of the upper San Francisco Estuary
Dates
Publication Date
2019-12-04
Start Date
2010-11-01
End Date
2018-05-31
Citation
Wulff, M.L., Feyrer, F.V., and Young, M.J., 2019, Gillnet data for fishes of the upper San Francisco Estuary: U.S. Geological Survey data release, https://doi.org/10.5066/P99HDPFT.
Summary
This is the data release for gillnet data from a 2016-18 USGS Tidal Wetlands Study and a 2010-11 Sacramento Splittail Study targeting fish in the upper San Francisco Estuary and Sacramento-San Joaquin Delta. This data was used to analyze selectivity parameters of five gillnet mesh sizes (38.1, 50.8, 63.5, 76.2, 88.9 mm) on 15 fish species of the upper San Francisco Estuary and Sacramento-San Joaquin Delta (Striped Bass (Morone saxatilis), Sacramento Splittail (Pogonichthys macrolepidotus), White Catfish (Ameiurus catus), Redear Sunfish (Lepomis microlophus), Sacramento Pikeminnow (Ptychocheilus grandis), Tule Perch (Hysterocarpus traskii), Jacksmelt (Atherinopsis californiensis), Sacramento Sucker (Catostomus occidentalis), Largemouth [...]
Summary
This is the data release for gillnet data from a 2016-18 USGS Tidal Wetlands Study and a 2010-11 Sacramento Splittail Study targeting fish in the upper San Francisco Estuary and Sacramento-San Joaquin Delta. This data was used to analyze selectivity parameters of five gillnet mesh sizes (38.1, 50.8, 63.5, 76.2, 88.9 mm) on 15 fish species of the upper San Francisco Estuary and Sacramento-San Joaquin Delta (Striped Bass (Morone saxatilis), Sacramento Splittail (Pogonichthys macrolepidotus), White Catfish (Ameiurus catus), Redear Sunfish (Lepomis microlophus), Sacramento Pikeminnow (Ptychocheilus grandis), Tule Perch (Hysterocarpus traskii), Jacksmelt (Atherinopsis californiensis), Sacramento Sucker (Catostomus occidentalis), Largemouth Bass (Micropterus salmoides), Threadfin Shad (Dorosoma petenense), Black Crappie (Pomoxis nigromaculatus), American Shad (Alosa sapidissima), Hitch (Lavinia exilicauda), Golden Shiner (Notemigonus crysoleucas), and Bluegill Sunfish (Lepomis macrochirus). Gillnet selectivity was estimated using the SELECT (share each length class’s catch total) method, which is a generalized linear model approach of indirect estimation of selectivity. Understanding gillnet selectivity can help inform future studies of fish assemblage structure in the upper San Francisco Estuary as well as studies that target fish species used in this analysis. Understanding size selectivity of the sampling gear can be helpful in determining the size structure of fish populations and decreasing bias in size-class catch data.
Click on title to download individual files attached to this item.
Gillnet metadata for DR 04082019.xml Original FGDC Metadata
View
36.99 KB
application/fgdc+xml
Gillnet data for DR 04.08.2019.csv
624.23 KB
text/csv
Purpose
The purpose of this report was to estimate gillnet selectivity for select fishes of the San Francisco Estuary, including the Sacramento-San Joaquin Delta using data collected from studies targeting fish of the region. Gillnet selectivity characteristics for fishes of the San Francisco Estuary have not been quantified before.
