Résultats de la recherche
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Krill catches and consumption by land-based predators in relation to distance from colonies of penguins and seals in the South Shetlands and South Orkneys
Abstract: Zones of 20 km width are defined around selected colonies of penguins distributed ... around the coasts of the South Shetland and South Orkney Islands. Krill catches in these zones are shown ... , probably as a result of oceanographic conditions. About 50% of the catch in Subarea 48.1 from December to ... March was taken within 40 km of the coast, and 90% within 80 km in all years 1988-1990. In 1987 and 1988 ...
Meeting Document : SC-CAMLR-X/BG/07 : Auteur(s): Secretariat
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Krill catches and consumption by land-based predators in relation to distance from colonies of penguins and seals in the South Shetlands and South Orkneys, 1987-1990
Abstract: Zones of 20 km width are defined around selected colonies of penguins distributed ... around the coasts of the South Shetland and South Orkney islands. Krill catches in these zones are shown ... result of oceanographic conditions. About 50% of the catch in 48.1 from December to March was taken ... within 40 km of the coast, and 90% within 80 km in all years 1988-1990. In 1987 and 1988 75% of the catch ...
Meeting Document : WG-CEMP-91/25 : Auteur(s): D.J. Agnew (Secretariat)
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AMLR Hydroacoustic Survey System Description of Methods, A Case Study
Abstract: The AMLR hydroacoustic system used for surveys in the vicinity of Elephant Island and ... King George Island during 1987-1989 has hardware and software components. The method of analysis ... proceeds from the basic integration data (lm bins by 1min outputs) to the stratification of these data into ... blocks of area and finally a total estimate of abundance and statistical confidence limits about the ...
Meeting Document : WG-KRILL-89/10 : Auteur(s): M.C. Macaulay (USA)
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Characterisation of skate catches in the Ross Sea region
(Dissostichus mawsoni) catch of about 3000 t. Skates form a small proportion of the total catch (typically 2% or ... in the Ross Sea Region, including the data collected in the two “Year of the Skate” fishing seasons ... in 2008/09 and 2009/10. The composition of the skate catch by species is uncertain; it is estimated ... to the end of the 2009–10 fishing season, and about 4300 Eaton cf. skates were landed and 4600 ...
Meeting Document : WG-FSA-10/25 : Auteur(s): S. Mormede and A. Dunn (New Zealand)
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Revised research plan for the 2013/14 exploratory longline fishery of Dissostichus spp. in Subarea 48.6
last WG-SAM meeting. We tentatively recalculated a sample size of Dissostichus spp in each block in ... such a way that the numbers of tag recoveries in the 2016 season shows an approximately 0.3 of ... coefficient variance of biomass estimate from the bootstrapped procedure, under the condition that the ... blocks, in order to promote successful stock assessment. We tentatively examined the degree of coverage ...
Meeting Document : WG-FSA-13/37 : Auteur(s): Delegation of Japan
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Reports on abundance and biological information of toothfish in Division 58.4.4 a & b by Shinsei maru No. 3 in 2013/14 season
Abstract: A survey was conducted to collect data of stock status and various biological ... information of toothfish in the research blocks 58.4.4b_1 (SSRU 58.4.4C) and 58.4.4b_2 (SSRU 58.4.4D) of ... Division 58.4.4b (Ob Lena Banks) from July 18 to September 20, 2014. A total of 88 hauls using normal ... trotline system were made in the blocks. Total catch of Dissostichus eleginoides (excluding those tagged ...
Meeting Document : WG-SAM-15/14 : Auteur(s): Delegation of Japan
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Oceanography of the South Georgia and South Orkney Islands regions using high-resolution models
productive, supporting large colonies of higher predators, and with a history of commercial exploitation ... . Many of the key oceanographic and ecological processes determining the operation of these marine ... ecosystems operate over small spatial scales of <10 km. Understanding the drivers of variability in such ... processes requires the development of high-resolution ocean models. Here we describe the development of ...
Meeting Document : WG-EMM-17/30 : Auteur(s): E. Young, E. Murphy and P. Trathan
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A spatial multi-species operating model (SMOM) of krill–predator interactions in small-scale management units in the Scotia Sea
Abstract: A Spatial Multi-species Operating Model (SMOM) of the underlying krill-predator-fishery ... dynamics is developed in response to requests for scientific advice regarding the subdivision of the ... the potential impact of fishing on land-based predators. The model is intended to complement the ... of krill in each of the SSMUs, as well as the numbers of predator species in each of these areas. The ...
Meeting Document : WG-EMM-06/12 : Auteur(s): É. Plagányi and D. Butterworth (South Africa)
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A characterisation of the toothfish fishery in Subareas 88.1 and 88.2 from 1997/98 to 2005/06
nine years in Subarea 88.1 and for five years in Subarea 88.2 with a large amount of data collected on ... fished. The 2006 D. mawsoni catch was the second highest on record with a total of 3388 t against a ... combined catch limit of 3451 t. The subarea catch limit was almost reached in both Subarea 88.1 and 88.2 ... . The management of the SSRUs within the two subareas was changed for the 2006 season as part of a 3 ...
Meeting Document : WG-FSA-06/29 : Auteur(s): S.M. Hanchet, M.L. Stevenson and A. Dunn (New Zealand)
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A method for inferring movement rates of fish from mark–recapture data
Abstract: This paper presents methods to infer the rate of movement of fish that are marked ... , released, and subsequently captured. The information that is available is the location and date of the ... release and the recapture. In addition, the intensity of fishing effort (i.e. sampling) by location and ... time is known. The simplest approach is to make a frequency plot of the distance between each release ...
Meeting Document : WG-FSA-05/66 : Auteur(s): C. Wilcox (Australia)