Bycatch rate was negatively related to sea surface temperature. A 1-degree increase in sea surface temperature resulted in an estimated decrease in bycatch rate of 0.003. Bycatch rate and net soak time were positively related. A 4-hour increase in soak time increased bycatch rate by about 0.005. Spatial and temporal variation in bycatch rates of dark shearwaters a in the 1990 Japanese squid driftnet fishery.
Dashes indicate lack of fishing effort in area and time period.