Although some sea turtle populations are showing encouraging signs of recovery, others continue to decline. Reversing population declines requires an understanding of the primary factor(s) that underlie this persistent demographic trend. The list of putative factors includes direct turtle and egg harvest, egg predation, loss or degradation of nesting beach habitat, fisheries bycatch, pollution,...

Sea turtles interact with a variety of fishing gears across their broad geographic distributions and ontogenetic habitat shifts. Cumulative assessments of multi-gear bycatch impacts on sea turtle populations are critical for coherent fisheries bycatch management, but such estimates are difficult to achieve, due to low fisheries observer effort, and a single-species, single-fishery management fo...

Sea turtle bycatch in pelagic longline fishing gear is an ongoing threat to the conservation of sea turtle populations. However, these bycatch events do not occur uniformly in space or time. Leatherback (Dermochelys coriacea) and loggerhead (Caretta caretta) bycatch rates reported in large fishing regions exhibited different degrees of interannual variability. Target catch and sea turtle bycatc...

  This study aimed to design a bycatch reduction device (BRD) for shrimp beam trawl, which is manufactured by flexible materials to reduce bycatch for the gear in the South Sea of Korea. The model test was carried out to understand the shape of the gear in the water and to measure the variation of flow speed due to the BRD in a circulating water channel. Catches were compared between a shrimp b...

In 1991, the National Marine Fisheries Service, as mandated by the U.S. Driftnet Impact Monitoring,. Assessment, and Control Act of 1987 and U.S. Public Law 101-627, developed methods to estimate the incidental catches (bycatch) of salmonids in the North Pacific squid driftnet fisheries of Japan, the Republic of Korea (ROK), and Taiwan. Two analytical approaches were used for the Japanese fishe...