Resultados de la búsqueda
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An ecosystem-based approach to management: using individual behaviour to predict the indirect effects of Antarctic krill fisheries on penguin foraging
many species within the Antarctic. Despite extensive knowledge of the ecosystem that they occupy, there ... is still incomplete understanding of the links between species and the effect of environmental ... understand the interactions between penguins and krill to determine the indirect effect of krill fisheries on ... is predicted to reduce penguin food intake. Given the documented links between krill and penguins ...
Meeting Document : WG-EMM-03/34 : Autor(es): S.H. Alonzo, P.V. Switzer and M. Mangel (USA)
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Proposal to allow daytime setting of longlines between 15 and 30 April in the Patagonian toothfish longline fishery in CCAMLR Statistical Division 58.5.2
Abstract: This paper summarises historic effort and seabird bycatch during the pre-season ... extension period (15–30 April) in the Patagonian toothfish longline fishery in CCAMLR statistical division ... 58.5.2. It notes that significant fishing effort has occurred in the pre-season extension period, by ... both of the longline vessels that operate in this fishery and in several seasons, and that no birds ...
Meeting Document : WG-IMAF-11/07 : Autor(es): I. Hay (Australia)
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ENCOUNTERS WITH VULNERABLE MARINE ECOSYSTEMS IN THE CONVENTION AREA
Abstract: So far in 2008/09, the Secretariat has received 30 VME-indicator notifications from ... relation to fishing in Divisions 58.4.1, 58.4.2 and 58.4.3b. The notifications resulted in the declaration ... 88.2. In addition, the Secretariat has received 30 notifications of encounters with VMEs during the ... course of research surveys conducted by the U.S.A. in Subarea 48.1 (17 notifications, seafloor depth 92 ...
Meeting Document : WG-EMM-09/08 : Autor(es): Secretariat
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A TIME FOR ACTION IN THE MANAGEMENT OF ANTARCTIC KRILL FISHERIES
Abstract: In this paper, ASOC draws CCAMLR’s attention to the most pressing issues in relation to ... the ecosystem-based management of the krill fishery, including the adoption of a conservation measure ... that ensures systematic scientific observer coverage, the development of a coordinated research plan to ... address key scientific uncertainties at the SSMU level in Area 48, and the consideration of feedback ...
Meeting Document : CCAMLR-XXVII/BG/24 : Autor(es): Submitted by ASOC
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Recent increase and southern expansion of Adelie penguin populations in the Ross Sea, Antarctica, related to climatic warming
Abstract: The numbers of Adelie penguins Pygoscelis adeliae (Hombron and Jacquinot) in the Ross ... Sea, Antarctica, have increased markedly over the past 10 years. Proportionally, this increase is most ... pronounced in McMurdo Sound, where the species’ breeding range has recently been extended 3 km south to Cape ... Barne (77°35’S) with the re-occupation of a former rookery that was abandoned sometime before the ...
Meeting Document : WG-CEMP-92/22 : Autor(es): R.H. Taylor and P.R. Wilson (New Zealand)
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Genetic population structure of the mackerel icefish, Champsocephalus gunnari, in Antarctic waters
Abstract: Genetic population structure of the mackerel icefish, Champsocephalus gunnari, in ... Georgia (N = 267; January/February 1991) and the South Orkneys (N = 44; January/February 1991) and ... polymorphic at the 0.95 criterion: glutamate oxaloacetate transaminase, GOT-I 2.6.1.1; α- glycerophosphate ... 1.15.1.1). Routine scoring of 358 fish at the 16 loci revealed below average levels of genetic variability ...
Meeting Document : WG-FSA-91/22 : Autor(es): G.R. Carvalho and M. Warren (United Kingdom)
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The relative by-catches of taxa associated with vulnerable marine ecosystems by autolines and Spanish longlines
Abstract: We reanalyzed data collected by the longline fishery in Subarea 88.1 to compare the ... bycatches of VME taxa made by vessels using Autolines and Spanish longlines. The fractions of sets with ... positive bycatch, as well as the weights of bycatch when bycatches were observed, were higher for Autolines ... the large number of zero-bycatch sets, we found that both the amounts of positive bycatches and the ...
Meeting Document : WG-FSA-13/41 : Autor(es): T. Gerrodette and G.M. Watters (USA)
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Upward adjustments to local catch limits for the krill fishery in Subarea 48.1
Abstract: Here we compile three vignettes that, together, provide the basis for making upward ... adjustments to local catch limits for the krill fishery in Subarea 48.1. We use the term local catch limit to ... refer to a catch limit that applies to a group of SSMUs (gSSMU), and the work presented here is based on ... the gSSMUs defined in another compilation of vignettes (AERD 2016a, pp. 3-13). We propose upward ...
Meeting Document : WG-EMM-16/47 : Autor(es): Antarctic Ecosystem Research Division, Southwest Fisheries Science Center and NOAA Fisheries
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Diagnostic plots of stock assessment models for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region to 2016/17
Abstract: We provide extensive diagnostic plots for the 2017 models R1 and R3 for Antarctic ... toothfish in the Ross Sea as recommended by WG-SAM-15 (2015). The stock assessment rationale and models as ... well as their main diagnostics are described in Mormede (2017). The CASAL files for the assessment ... models were provided to the CCAMLR Secretariat as a zip file. In this paper we present the results for ...
Meeting Document : WG-FSA-17/38 : Autor(es): S. Mormede
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Estimates of length-frequency in the assessment of mackerel icefish Champsocephalus gunnari in Subarea 48.3
Abstract: This working document provides details of a modification in the method of calculating ... length distributions used in the assessment of Champsocephalus gunnari from the length distributions of ... individual hauls. The effect of these changes in method have little impact on the catches that would have ... been permitted based on the 2011 and 2013 surveys, but has a larger impact on the catch limits derived ...
Meeting Document : WG-FSA-17/51 : Autor(es): T. Earl