Résultats de la recherche
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Krill population trends
concentrated for the last 20 years. There have been suggestions of changes in the distribution and abundance of ... data available for Antarctic krill and will present an indication of the extent and limitations of the ... Antarctic krill, based mainly on analysis of available scientific net data. There is also evidence of ...
Meeting Document : CCAMLR-IWC-WS-08/11 : Auteur(s): Tarling, G., Watkins, J., Quetin, L., Reiss, C., Atkinson, A., Ross, R., Pakhomov, E., Kawaguchi, S., Nicol, S., Siegel, V.
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Statistical problems in krill stock hydroacoustic assessments
Abstract: Two primary issues are at question for hydroacoustic assessments of krill, The first is ... for deciding what method is most appropriate, this is made even more difficult by the fact that most ... several unsatisfied needs for improvements in sampling design and tests for systematic trends in survey ... of interest would seem to be not the absolute amount of biomass present in an area, but rather how it ...
Meeting Document : SC-CAMLR-VII/BG/22 : Auteur(s): United States of America
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Demersal fish communities in the Ross Sea region of Antarctica: comparisons between video and trawl survey methods
essential for understanding the ecological effects of fisheries. Such estimates are conventionally derived ... from research trawl surveys but video techniques afford an alternative, or complementary, approach ... spanning the continental shelf, northern continental slope, abyssal plain, and two seamounts were sampled ... demersal trawl were consistently lower than for the other methods. Macrourus spp. grenadiers were ca. eight ...
Meeting Document : WG-FSA-12/51 : Auteur(s): D.A. Bowden, S.M. Hanchet and P.M. Marriott (New Zealand)
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Trophic niche of the Antarctic toothfish caught in SSRU 88.3 as inferred from fatty acids and stable isotopes
utilization, which are partitioned into two prey groups (i.e. feeding on bathypelagic vs. bathydemersal ... –2018, making comparisons with previous dataset obtained from the Ross Sea shelf (RSS) and the Indian ... of regional toothfish stocks, demonstrating an ontogenetic movement into deeper water from shelf ... descriptors for most trophic markers in toothfish, emphasizing both ontogenetic and geographical variability ...
Meeting Document : WG-FSA-18/21 : Auteur(s): C.-K. Kang, S.-G. Choi, H.Y. Kang, Y.-J. Lee, S. Chung and D.H. An
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Unusual breeding by seabirds at Marion Island during 1997/98
recorded, and more southern giant petrels M. giganteus did so than in any other year since 1994. For ... of northern giant petrels. Conversely, for two seabirds that feed close to the island, gentoo penguin ... Crozet shags that bred decreased; probably about 25% of the adult population did not breed. For two ... chicks of rockhopper penguins fledged with a slightly heavier mass than in other years. However, for both ...
Meeting Document : WG-EMM-03/13 : Auteur(s): R.J.M. Crawford, C.M. Duncombe Rae, D.C. Nel and J. Cooper (South Africa)
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A characterisation of the toothfish fishery in Subareas 88.1 and 88.2 from 1997/98 to 2006/07
management of the SSRUs within the two subareas was changed for the 2006 season as part of a 3-year ... SSRUs in the two subareas except for 881D and 882C have now been fished. The 2007 D. mawsoni catch was ... . So at this stage there is no evidence for strong variation in year class strength in the fishery ... years in Subarea 88.1 and for five years in Subarea 88.2. This report summarises the large amount of ...
Meeting Document : WG-FSA-07/28 : Auteur(s): S.M. Hanchet, M.L. Stevenson and A. Dunn (New Zealand)
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Results of E.L. Holmberg 1995 fish survey in Subarea 48.3
aggregation of stations in a nested ANOVA model. An increase over last year's values was observed in the ... the Scotia Sea. Plankton samples contained krill more often than last year and an hydroacoustical ... comparison between both cruises. Of these, 20 hauls were located at less than 0.5 miles and 11 between 0.5 ... within the historical limits except for a the possible presence of a large eddy in the northern part of ...
Meeting Document : WG-FSA-95/35 : Auteur(s): Marschoff, E., Madirolas, A., Balestrini, C., Tossonotto, G., Gonzalez, B., Calcagno, J.
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Time series of Antarctic krill estimates around the South Shetland Islands from 2013 to 2019
. Distribution of Antarctic krill for the 2013/14 to 2015/16 and the 2017/18 to 2018/19 fishing seasons were ... Abstract: Metadata for krill biomass time series obtained by Chinese krill fishing vessel in ... the South Shetland Islands, one of the major fishing ground for Antarctic krill in Area 48. Acoustic ... EV template was used for echo-integration, and the areal krill density with coefficient of variance ...
Meeting Document : SG-ASAM-2019/04 Rev. 1 : Auteur(s): X. Yu, X. Wang, X. Zhao, J. Zhang, G. Fan, Y. Ying and J. Zhu
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CCAMLR MPAs and the global climate and biodiversity crisis
targets call for a global network of MPAs to curb biodiversity loss, and both the first and second CCAMLR ... Performance Review Panels (2008 and 2017, respectively) made recommendations for CCAMLR to advance its MPA ... work. Nearly two decades since MPA discussions began, there are significant gaps in the system of ... CCAMLR MPAs. This has implications not only for the conservation of marine life in the Convention Area ...
Meeting Document : CCAMLR-38/BG/44 : Auteur(s): Submitted by ASOC
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Anthropogenic feather soiling, marine debris and fishing gear associated with seabirds at Bird Island, South Georgia, 2000/01
for grey-headed albatrosses, but a 24% decrease from the maximum of the previous year for wandering ... . Quantities of fishing gear remained within the levels of previous years for all other species. Marine debris ... fishing gear associated with seabirds at Bird Island, South Georgia. In this, the eighth year of ... standardised recording, an unprecedented quantity of hooks (both with and without long-line attached)and ...
Meeting Document : SC-CAMLR-XX/BG/07 : Auteur(s): Delegation of the United Kingdom