Current and future habitat suitability of northern fur seals and overlap with the commercial walleye pollock fishery in the eastern Bering Sea

Table 1 Environmental variables used in northern fur seal habitat models, either directly output from the ROMS-NPZ model or calculated from model output

Variable	Units	Temporal resolution	Additional description
Bottom temperature	ºC	Weekly	Average temperature in the bottom 5 m
Surface temperature	ºC	Weekly	Average temperature in the top 5 m
Bathymetry	m	Static	Depth of ocean floor relative to sea level
Large phytoplankton (PhL)	mg C m^− 2	Weekly	Biomass integrated over depth
Average large phytoplankton	mg C m^− 2	Yearly	Average integrated biomass from April to July in each year
Large copepod (NCaO + NCaS)	mg C m^− 2	Weekly	Biomass integrated over depth
Euphausiid (EupO + EupS)	mg C m^− 2	Weekly	Biomass integrated over depth

The ROMS-NPZ variable name is shown in parentheses for select variables. Bathymetry was correlated with bottom temperature in the basin and was excluded from the analysis. Bottom temperature was retained because it is dynamic and has good skill. All other variables were included in both the basin and continental shelf models. Temporal resolution describes whether a given variable was static for a grid cell, or if dynamic, the timescale at which output was aggregated

ISSN: 2051-3933