![]() ![]() ![]() Set nets are used only in tribal treaty fisheries, while drift nets are used by treaty tribes and in nontreaty commercial fisheries. On the Columbia, tribal and commercial gillnetters catch shad, smelt, sturgeon, and salmon. ![]() Their use is currently confined to the Columbia River. In Oregon, gillnets have been used historically in a number of coastal rivers. Gillnets are used throughout the United States, including the East, West, and Gulf coasts the Great Lakes on rivers such as the Mississippi and the Columbia and in Alaska. The Magnuson-Stevens Act (PL 94-265 (1976)), the federal law governing the management of marine fisheries, defines a gillnet as a “panel of netting, suspended vertically in the water by floats along the top and weights along the bottom, to entangle fish that attempt to pass through it." The size of the meshes determines the size of fish caught and enables smaller fish to pass through the openings unharmed. The nets may be used in salt or fresh water and may be stationary (set net) or mobile (drift net). A gillnet is used by fishermen throughout the world to catch various species of fish, and scientists frequently use gillnets as a sampling tool to assess fish populations. ![]()
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