Fishery managers counter the local effects of agricultural and industrial pollution, insensitive flood relief and drainage schemes, excessive water abstraction and inadequately treated sewage.

Combined, it’s a technological revolution that’s allowing scientists and fishery managers unprecedented abilities to forecast where fish will be—and where bycatch won’t be.

Having that information would help fishery managers know when to open or close a fishery, aquaculture businesses to plan harvest dates and conservation managers to implement additional monitoring efforts.

Fluctuations in the population and intensive fishing make sustaining the fishery one of the highest priorities for local fisheries managers.

Sensing the danger of overfishing tanner crab to the point of extinction, legislators and fisheries managers closed tanner crab fishing entirely in 1986 and 1987.