Biological Significance of Bycatch of Harbor Porpoise In the Gulf of Maine Demersal Gillnet Fishery
نویسندگان
چکیده
................................................................................................................................ v Introduction .......................................................................................................................... 1 Methods ................................................................................................................................ 1 Bycatch of harbor porpoise .............................................................................................. 1 Abundance ...................................................................................................................... 2 Biological significance of the bycatch ............................................................................... 6 Results ................................................................................................................................. 7 Bycatch ........................................................................................................................... 7 Abundance ...................................................................................................................... 9 Biological significance of the bycatch ............................................................................. 11 Discussion......................................................................................................... ................. 12 Acknowledgments ............................................................................................................... 14 References.................................................................................................................... ...... 14
منابع مشابه
Understanding Non-compliance With Protected Species Regulations in the Northeast USA Gillnet Fishery
Marine mammals and sea turtles in the United States are protected from commercial fishery interactions under the Marine Mammal Protection Act and the Endangered Species Act. To reduce harbor porpoise bycatch in the northeast sink gillnet fishery, fishermen are mandated to attach pingers to their nets in regulated areas. Although, pinger regulations have been in place for over a decade, in pract...
متن کاملTrends in Stranding and By-Catch Rates of Gray and Harbor Seals along the Northeastern Coast of the United States: Evidence of Divergence in the Abundance of Two Sympatric Phocid Species?
Harbor seals and gray seals are sympatric phocid pinnipeds found in coastal waters of the temperate and sub-Arctic North Atlantic. In the Northwest Atlantic, both species were depleted through a combination of subsistence hunts and government supported bounties, and are now re-occupying substantial portions of their original ranges. While both species appear to have recovered during the past 2 ...
متن کاملExploring Trade-Offs between Fisheries and Conservation of the Vaquita Porpoise (Phocoena sinus) Using an Atlantis Ecosystem Model
BACKGROUND Minimizing fishery bycatch threats might involve trade-offs between maintaining viable populations and economic benefits. Understanding these trade-offs can help managers reconcile conflicting goals. An example is a set of bycatch reduction measures for the Critically Endangered vaquita porpoise (Phocoena sinus), in the Northern Gulf of California, Mexico. The vaquita is an endemic s...
متن کاملMarine mammal bycatch in gillnet and other entangling net fisheries , 1990 to 2011
Since the 1970s the role of fishery bycatch as a factor reducing, or limiting the recovery of, marine mammal populations has been increasingly recognized. The proceedings of a 1990 International Whaling Commission symposium and workshop summarized fishery and bycatch data by region, fishery, and species, and estimated the significance of the ‘impacts’ of bycatch in passive gear on all cetacean ...
متن کاملHARBOR PORPOISE (Phocoena phocoena): Northern California/Southern Oregon Stock
STOCK DEFINITION AND GEOGRAPHIC RANGE In the Pacific, harbor porpoise are found in coastal and inland waters from Point Conception, California to Alaska and across to Kamchatka and Japan (Gaskin 1984). Harbor porpoise appear to have more restricted movements along the western coast of the continental U.S. than along the eastern coast. Regional differences in pollutant residues in harbor porpois...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2013