Resultados de la búsqueda
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Ross Sea Bioregionalisation, Part II: Patterns of co-occurrence of mesopredators in an intact polar ocean ecosystem
Abstract: We report results of analyses of niche occupation among mesopredators in the Ross Sea ... the surface of the ocean, 2) capacity to utilize differing amounts of the water column (foraging depth ... and Snow petrel. The apex predators, Leopard Seal and Killer Whale ecotype A/B, were not included ... ). Data on depth of diving and diet were taken from the literature. Three patterns of horizontal spatial ...
Meeting Document : WG-EMM-10/12 : Autor(es): G. Ballard, D. Jongsomjit and D.G. Ainley (USA)
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Uncertainty in acoustic surveys of Antarctic krill
acoustic surveys. The variance in system calibration with a standard sphere was evaluated in relation to ... bias was investigated by comparing the theoretical and actual target strength (TS) values of four ... different standard spheres with the results of a calibration by self-reciprocity (Demer and Hewitt ... , submitted). Combining the results of these experiments, the accuracy and precision of a system calibration ...
Meeting Document : WG-EMM-95/72 : Autor(es): Demer, D.A.
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SCIC-06
/01 Provisional Agenda for the 2006 Meeting of the CCAMLR Standing Committee on Implementation and ... notified to participate in exploratory fisheries in the 2006/07 season Secretariat SCIC-06/05 Rev. 1 Catch ... consideration under Conservation Measures 10-06 and 10-07 Secretariat SCIC-06/07 Extracts from the reports of ... the Working Group on Fish Stock Assessment (total removals of Dissostichus spp. Including IUU catches ...
Meeting
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Alternative methods for determining subarea or local area catch limits for krill in Statistical Area 48
limit on krill (Euphausia superba) in Statistical Area 48. The measure also asks the Scientific ... Committee to provide the Commission with advice on how precautionary limits could be applied to subareas or ... evaluated relative to six criteria: 1) the degree to which information on biological relationships is ... considered, 2) the cost of data collection, 3) the reliability of required information, 4) the ease of ...
Meeting Document : WG-KRILL-92/16 : Autor(es): G. Watters and R.P. Hewitt (USA)
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Discussion on recent results from an integrated assessment of Antarctic krill (Euphausia superba) in Subarea 48.1
Abstract: This is a companion paper to Kinzey et al. (2014), who extended the integrated stock ... were pooled at annual, seasonal, and monthly time scales. The data were from research cruises ... conducted by Germany (RMT8 net samples from 1981 to 1989), the U.S. AMLR Program (IKMT net samples from 1992 ... from three of the models provide a robust picture of changes in the krill population. An annual model ...
Meeting Document : WG-EMM-14/35 : Autor(es): G.M. Watters, C.S. Reiss and D. Kinzey (USA)
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A krill–predator–fishery model for evaluating candidate management procedures
Abstract: The CCAMLR has recognised the need to subdivide the precautionary krill catch limit for ... Statistical Area 48 amongst smaller spatial units in order to minimize the localized depletion of krill in ... been defined, and six candidate procedures for subdividing the catch have been identified. It is now ... well as fishery performance. This evaluation must be conducted in the context of considerable ...
Meeting Document : WG-EMM-05/13 : Autor(es): G.M. Watters, J.T. Hinke (USA), K. Reid and S. Hill (United Kingdom)
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30 years of krill fisheries management – challenges remain
frequently. The reproduction and survival of krill are significantly affected by sea ice cover. This is of ... concern since key spawning, recruitment and nursery areas of krill are located in the Southwest Atlantic ... sector, an area that has been warming rapidly, resulting in a reduction in the extent and duration of ... winter sea ice. CCAMLR needs to maintain a precautionary approach to krill fisheries management. The ...
Meeting Document : CCAMLR-XXX/BG/19 : Autor(es): Submitted by ASOC
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ENVIRONMENTAL FORCING AND SOUTHERN OCEAN MARINE PREDATOR POPULATIONS: EFFECTS OF CLIMATE CHANGE AND VARIABILITY
Abstract: The Southern Ocean is a major component within the global ocean and climate system and ... potentially the location where the most rapid climate change is most likely to happen, particularly in the ... include changes to the long interdecadal background signals such as the development of the El Niño ... opportunity to explore how biological communities respond to change. This approach is based on the premise ...
Meeting Document : WG-EMM-08/P06 : Autor(es): P.N. Trathan, J. Forcada and E.J. Murphy
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DATA QUALITY ASSESSMENT IN CCAMLR: REQUIREMENTS FOR MINIMUM INTEGRITY TESTING TO ENSURE THAT DATA ARE FIT FOR PURPOSE
Abstract: The level of data quality assessment and ‘certification’ as ‘fit for purpose’ depends ... upon the different requirements for the data, together with a recognition that, however thorough a ... validation exercise the data are exposed to, there will always be some data that require some additional ... confirmation of their validity. In the context of CCAMLR, data may undergo one set of quality testing in order ...
Meeting Document : WG-SAM-09/05 : Autor(es): Secretariat
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Adélie penguin foraging behaviour and breeding success in seasons of contrasting krill availability (Mawson Coast, Antarctica)
penguins at the Béchervaise Island CEMP site were compared between seasons of contrasting krill ... Abstract: Parameters measured under the CCAMLR Ecosystem Monitoring Program (CEMP) for Adélie ... availability. Krill biomass estimates were derived from shipboard surveys carried out within the penguins ... ’ normal foraging range during the 2001 and 2003 breeding seasons. More than three times as much krill was ...
Meeting Document : WG-EMM-03/44 : Autor(es): J. Clarke, M. Tierney, S. Candy, S. Nicol, L. Irvine and K. Kerry (Australia)