productivity_anomaly.RdThese data represent estimates of recruitment success for species sampled in the NEFSC Bottom Trawl Survey and those calculated for stock assessments.
productivity_anomalyData frame with 8241 rows and 5 columns.
Var: Common name of surveyed species. If data reflect the aggregated shelf-wide anomaly, then NE LME is included with the species name.
EPU: EPU where sampling occurred.
Time: Year.
Value: Small fish per large fish biomass anomaly.
Units: Units of variable Var.
Detailed information regarding the derivation of this indicator are present at https://noaa-edab.github.io/tech-doc/fish-productivity-indicator.html.
Perretti, Charles T., et al. "Regime shifts in fish recruitment on the Northeast US Continental Shelf." Marine Ecology Progress Series 574 (2017): 1-11.
Wigley, S. E., H. M. McBride, and N. J. McHugh. 2003. “Length-Weight Relationships for 74 Fish Species Collected During NEFSC Research Vessel Bottom Trawl Surveys, 1992-99.” NOAA Technical Memorandum 171. National Marine Fisheries Service.