The 2013 Eastern Bering Sea Continental Shelf Bottom Trawl Survey
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The 2013 Eastern Bering Sea Continental Shelf Bottom Trawl Survey
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Author : Benjamin Daly
language : en
Publisher:
Release Date : 2015
The 2013 Eastern Bering Sea Continental Shelf Bottom Trawl Survey written by Benjamin Daly and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with Biomass categories.
The eastern Bering Sea bottom trawl survey has been conducted annually since 1975 by the Resource Assessment and Conservation Engineering Division of the Alaska Fisheries Science Center, National Marine Fisheries Service. The purpose of this survey is to collect data on the distribution and abundance of crab, groundfish, and other benthic resources in the eastern Bering Sea. These data are used to estimate population abundances for the management of commercially important species in the region. In 2013, 376 standard stations were sampled on the eastern Bering Sea shelf.
Results Of The 2013 Eastern Bering Sea Continental Shelf Bottom Trawl Survey Of Groundfish And Invertebrate Resources
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Author : Jason Conner
language : en
Publisher:
Release Date : 2016
Results Of The 2013 Eastern Bering Sea Continental Shelf Bottom Trawl Survey Of Groundfish And Invertebrate Resources written by Jason Conner and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with Fish populations categories.
The Resource Assessment and Conservation Engineering Division of the Alaska Fisheries Science Center conducts annual bottom trawl surveys to monitor the condition of the demersal fish and crab stocks of the eastern Bering Sea continental shelf. The standard study area encompasses a major portion of the eastern Bering Sea shelf (depths between 20 - 200 m) from the Alaska Peninsula north to approximately the latitude of St. Matthew Island (60° 50' N). In 2013, two chartered trawlers, the 40-m FV Aldebaran and the 43.5-m FV Alaska Knight, surveyed this area. Demersal populations were sampled by trawling for 30 minutes at stations centered within 37.04 × 37.04 km (20 × 20 nmi) grids covering the survey area. At each station, species composition of the catch was determined, and length distributions and age structure samples were collected from ecologically and commercially important species. Three-hundred seventy-six standard survey stations were successfully sampled. A total of 93 fish species and 256 invertebrate taxa were identified in catches from the EBS survey . The combined biomass of walleye pollock (Gadus chalcogrammus), yellowfin sole (Limanda aspera), and northern rock sole (Lepidopsetta polyxystra) was 8.6 million metric tons (t) which was 71% of the total fish biomass. The biomass of invertebrates was primarily composed of echinoderms (1.3 million t) and crustaceans (0.9 million t). Survey results presented in this report include abundance estimates for fishes and invertebrates, geographic distributions and size compositions of selected fish species, and contour plots of surface and bottom temperatures during the survey sampling period. Appendices provide station data, catch data summarized by station, taxon listings, and detailed analyses of abundance and biological data of the sampled populations. [doi:10.7289/V5/TM-AFSC-331 (http://dx.doi.org/10.7289/V5/TM-AFSC-331)]
The 2014 Eastern Bering Sea Continental Shelf Bottom Trawl Survey
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Author : Benjamin Daly
language : en
Publisher:
Release Date : 2014
The 2014 Eastern Bering Sea Continental Shelf Bottom Trawl Survey written by Benjamin Daly and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with Crab fisheries categories.
The eastern Bering Sea bottom trawl survey has been conducted annually since 1975 by the Resource Assessment and Conservation Engineering Division of the Alaska Fisheries Science Center, National Marine Fisheries Service. The purpose of this survey is to collect data on the distribution and abundance of crab, groundfish, and other benthic resources in the eastern Bering Sea. These data are used to estimate population abundances for the management of commercially important species in the region. This document includes the time series results from 1975 to the present including the 2014 survey data. It is noted that the time series in this document was corrected for errors made between 2010 and 2013 for mature female Tanner crab biomass in the west (see page 16). In 2014, 376 standard stations were sampled on the eastern Bering Sea shelf.
The 2011 Eastern Bering Sea Continental Shelf Bottom Trawl Survey
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Author : Elizabeth Ann Chilton
language : en
Publisher:
Release Date : 2012
The 2011 Eastern Bering Sea Continental Shelf Bottom Trawl Survey written by Elizabeth Ann Chilton and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Alaskan king crab categories.
The 2015 Eastern Bering Sea Continental Shelf Bottom Trawl Survey
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Author : Benjamin Daly
language : en
Publisher:
Release Date : 2015
The 2015 Eastern Bering Sea Continental Shelf Bottom Trawl Survey written by Benjamin Daly and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with Crab fisheries categories.
The eastern Bering Sea bottom trawl survey has been conducted annually since 1975 by the Resource Assessment and Conservation Engineering Division of the Alaska Fisheries Science Center, National Marine Fisheries Service. The purpose of this survey is to collect data on the distribution and abundance of crab, groundfish, and other benthic resources in the eastern Bering Sea. These data are used to estimate population abundances for the management of commercially important species in the region. This document includes the time series of results from 1975 to the present. The historical annual abundance and biomass estimates were recalculated with changes in which tows were included, the size-weight regressions used for biomass, and the criteria used for defining maturity. As a result, the historical estimates presented in this document may be different from previous year's documents. In 2015, 375 standard stations were sampled on the eastern Bering Sea shelf.
2003 Bottom Trawl Survey Of The Eastern Bering Sea Continental Shelf
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Author : Erika Acuna
language : en
Publisher:
Release Date : 2004
2003 Bottom Trawl Survey Of The Eastern Bering Sea Continental Shelf written by Erika Acuna and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Fish communities categories.
"Survey results presented in this report include relative fishing powers of the survey vessels, abundance estimates for fish and invertebrates, geographic distributions of important fish species and size composition of principal fish species. Surface and bottom temperatures recorded at each sampling station are also presented."--Page iii.
2000 Bottom Trawl Survey Of The Eastern Bering Sea Continental Shelf
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Author : Deborah Nebenzahl
language : en
Publisher:
Release Date : 2000
2000 Bottom Trawl Survey Of The Eastern Bering Sea Continental Shelf written by Deborah Nebenzahl and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Fish communities categories.
Bottom Trawl Survey Of The Eastern Bering Sea Continental Shelf
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Author : Alaska Fisheries Science Center Nationa
language : en
Publisher: BiblioGov
Release Date : 2013-06
Bottom Trawl Survey Of The Eastern Bering Sea Continental Shelf written by Alaska Fisheries Science Center Nationa and has been published by BiblioGov this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-06 with categories.
In the 1970's the National Oceanic and Atmospheric Administration (NOAA) was made to manage our oceanic and atmospheric resources. The Alaska Fisheries Science Center is the research branch for marine life and coastal oceans off parts of the U.S. west coast and Alaska. This includes the Eastern Bering Sea where some the worlds most important commercial fishing takes place. Their mission is to develop and maintain scientific exploration to help understand and manage that region's environment. Over the years there have been many reports published which discuss their findings; this is one of them.
2005 Bottom Trawl Survey Of The Eastern Bering Sea Continental Shelf
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Author : Erika Acuna
language : en
Publisher:
Release Date : 2007
2005 Bottom Trawl Survey Of The Eastern Bering Sea Continental Shelf written by Erika Acuna and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Fish communities categories.
1996 Bottom Trawl Survey Of The Eastern Bering Sea Continental Shelf
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Author : Pamela Goddard
language : en
Publisher:
Release Date : 1999
1996 Bottom Trawl Survey Of The Eastern Bering Sea Continental Shelf written by Pamela Goddard and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Fish populations categories.