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Author : Cynthia Yeung
Release : 2001
Genre : Bycatches (Fisheries)
Kind : eBook
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Book Synopsis Estimates of marine mammal and marine turtle bycatch by the U.S. Atlantic pelagic longline fleet in 1999-2000 by : Cynthia Yeung
Download or read book Estimates of marine mammal and marine turtle bycatch by the U.S. Atlantic pelagic longline fleet in 1999-2000 written by Cynthia Yeung. This book was released on 2001. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Cynthia Yeung
Release : 1999
Genre : Bycatches (Fisheries)
Kind : eBook
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Book Synopsis Estimates of Marine Mammal and Marine Turtle Bycatch by the U.S. Atlantic Pelagic Longline Fleet in 1998 by : Cynthia Yeung
Download or read book Estimates of Marine Mammal and Marine Turtle Bycatch by the U.S. Atlantic Pelagic Longline Fleet in 1998 written by Cynthia Yeung. This book was released on 1999. Available in PDF, EPUB and Kindle. Book excerpt: "This report presents the 1998 estimates of the bycatch of marine mammal and sea turtle taken by the part of the U.S. Atlantic pelagic longline fleet that lands tuna and Atlantic swordfish. The information is required by NOAA Fisheries to meet its responsibility for management of interactions between protected species and commercial fisheries based on the level of incidental serious injury and mortality. Serious injury is defined under proposed guidelines drafted by the NOAA Office of Protected Resources, and is equated to mortality for the purpose of bycatch estimation. Estimates were based on bycatch rates from a representative sample of the fleet recorded by scientific observers, and fishing effort reported by the fleet. Bycatch rates reported by the fleet were omitted. Estimates were constructed using the Delta-lognormal method. Robustness of the estimates to geographical and temporal effects was examined by pooling across strata (calendar quarters, fishing areas, and groups of species). Point estimates of bycatch were relatively insensitive to pooling treatments, but gains in precision of estimates (coefficient of variation) were attained in cases where bycatch numbers were relatively high. The total observed bycatch in 1998 amounted to six for marine mammals and 20 for marine turtles. Extrapolated to total fleet effort, the most precise estimate (pooling within years, within the three major fishing areas, and grouping of species) indicates that the US pelagic longline fleet operating in the Atlantic caught a total of 205 (57-828, 95%CI) marine mammals in 1998. Of these, the estimated number of marine mammals that were dead or seriously injured and thus presumed dead is 54 (10-277, 95% CI). For marine turtles, an estimated total of 728 (337-1824, 95%CI) were caught by the fleet in 1998. Of these, the estimated number that were dead or seriously injured and presumed dead is 708 (324-1788, 95% CI). Both marine mammals and turtles were mostly caught from the Grand Banks (Northeast Coastal region) fishing area of the US Atlantic EEZ"--Summary.
Author :
Release : 2002
Genre : Marine mammal populations
Kind : eBook
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Book Synopsis U.S. Atlantic and Gulf of Mexico Marine Mammal Stock Assessments--2002 by :
Download or read book U.S. Atlantic and Gulf of Mexico Marine Mammal Stock Assessments--2002 written by . This book was released on 2002. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Lance Preston Garrison
Release : 2003
Genre : Bycatches (Fisheries)
Kind : eBook
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Book Synopsis Estimated Bycatch of Marine Mammals and Turtles in the U.S. Atlantic Pelagic Longline Fleet During 2001-2002 by : Lance Preston Garrison
Download or read book Estimated Bycatch of Marine Mammals and Turtles in the U.S. Atlantic Pelagic Longline Fleet During 2001-2002 written by Lance Preston Garrison. This book was released on 2003. Available in PDF, EPUB and Kindle. Book excerpt: "The U.S. Atlantic pelagic longline fleet operates throughout the Gulf of Mexico, along the entire U.S. Atlantic coast over the continental shelf and slope, and in distant water areas including the central North Atlantic and the Canadian Grand Banks. The Atlantic longline fleet is defined as a Category I fishery under the Marine Mammal Protection Act, and it is also the subject of management concerns under the Endangered Species Act due to interactions with marine turtles including leatherback and loggerhead turtles. Using data from the pelagic longline fishery observer program and a mandatory fishery logbook reporting program, total bycatch of marine mammals and turtles in the longline fishery was estimated for 2001 and 2002. A delta-lognormal approach was applied to estimate region specific and total annual interactions and mortality for the fishery. Total interactions observed during an experimental fishery in waters off of the Canadian Grand Banks are also documented. The primary marine mammal species interacting with this fishery were pilot whales (Globicephala sp.) and Risso's dolphin (Grampus griseus). There were also significant interactions with leatherback turtles (Dermochelys coriacea) and loggerhead turtles (Caretta caretta) during both years. Potential sources of bias and uncertainty in these bycatch estimates are discussed"--Abstract.
Author : Darlene R. Johnson
Release : 1999
Genre : Bycatches (Fisheries)
Kind : eBook
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Book Synopsis Estimates of Marine Mammal and Marine Turtle Bycatch by the U.S. Atlantic Pelagic Longline Fleet in 1992-1997 by : Darlene R. Johnson
Download or read book Estimates of Marine Mammal and Marine Turtle Bycatch by the U.S. Atlantic Pelagic Longline Fleet in 1992-1997 written by Darlene R. Johnson. This book was released on 1999. Available in PDF, EPUB and Kindle. Book excerpt:
