surveyIndexAll | R Documentation |
Survey data comes from Northeast Fisheries Science Center's Bottom Trawl
Survey. Indices are calculated using the Survdat
R package. This data
set covers the entire bottom trawl survey from 1968 to 2019.
All appropriate calibration factors have been applied for changes in gear/vessels
over the years. Data from the Bigelow era (>2008) that are not converted
are in a separate data set (surveyIndexHBAll
). This data covers all
species caught on the survey. For the data set containing only the focal
species see surveyIndex
.
surveyIndexAll
A data frame
Other surveyIndex
year survey conducted
Survey Species Code see focalSpecies
Season the survey was conducted
stratified biomass or abundance (strat.biomass/strat.abund), variance (biomass.var/abund.var), or standard error (biomass.SE/abund.SE)
value of the variable
units of the variable
:
surveyIndexA4All
,
surveyIndexA4
,
surveyIndexHBAll
,
surveyIndexHB
,
surveyIndex
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