Resultados de la búsqueda
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Monitoring a marine ecosystem using responses of upper trophic level predators
Abstract: 1. This study examined the changing status of the marine ecosystem at the island of ... index (CSI). 2. Sensitivity analyses showed that missing values had a large effect upon the accuracy of ... the CSI but this effect was reduced if the individual variables were highly correlated. The level of ... correlation and proportion of missing values within the empirical data set were within the acceptable range ...
Meeting Document : WG-EMM-01/25 : Autor(es): I.L. Boyd and A.W.A. Murray (United Kingdom)
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Summary of research voyages in the South Orkney Islands region in 2015/16
undertaken in the austral summer of 2015-16. It collected at-sea data on the distribution, abundance and ... vessel and field camps on Monroe Island, Powell Island and at Signy where satellite tracking of penguins ... inform the further development of spatial management, including feedback management of the krill fishery ... behaviour of krill and its predators across a range of temporal and spatial scales using acoustics, nets and ...
Meeting Document : SC-CAMLR-XXXV/BG/28 : Autor(es): Delegations of the United Kingdom and Norway
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Research plan for the 2016/17 exploratory longline fishery of Dissostichus spp. in Subarea 48.6 by South Africa and Japan
precautionary biomass for D. mawsoni in block 48.6_2 and 48.6_3 because of recaptures with short period at ... . We investigated the biological features of D. mawsoni using Observer data. The geographical ... distribution of sizes, GSI and Fulton’s condition factors for D. mawsoni in Subarea 48.6 suggest that northward ... and preliminary CASAL models. We divided the two areas for block 48.6_2 by latitude of 55.2°S to ...
Meeting Document : WG-SAM-16/07 : Autor(es): Delegations of Japan and South Africa
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The application of CCAMLR Ecosystem Monitoring Program (CEMP) standard methods in the Antarctic site inventory project
changes in fauna, flora, and other major features at these sites; and how best to minimize potential ... adverse impacts of human visitor activity. CEMP Standard Methods were relied upon in establishing the ... project's methodology, particularly with respect to counting penguin nests and chicks. At each site ... power P (= 1-ß) ≥ 0.8. Author(s): Naveen, R. Title: The application of CCAMLR Ecosystem Monitoring ...
Meeting Document : WG-EMM-97/38 : Autor(es): Naveen, R.
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Analysis of seamount-specific catch and tagging data in the Amundsen Sea, SSRU 88.2H
is recommended that the stock assessment include only recaptures of tagged fish that have been at ... features in SSRU 88.2H were analysed to compare multiple raw indicators of biomass trends in isolated local ... catch data are unlikely to index abundance at small temporal and spatial scales. Although indicative ... the choice of reference area, the method produced lower biomass estimates than mark-recapture ...
Meeting Document : WG-SAM-14/27 : Autor(es): S.J. Parker (New Zealand)
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The Continuous Plankton Recorder in the Southern Ocean: a comparative analysis of zooplankton communities sampled by the CPR and vertical net hauls along 140°E
Abstract: A repeat transect was run south of Tasmania, along ~140°E, during November and December ... 2001. NORPAC nets were deployed during a CTD transect on the southern leg, sampling four depth zones at ... each of 19 stations: 0–20, 20–50, 50–100 and 100–150 m. A Continuous Plankton Recorder (CPR) was ... mesh and all sampling was conducted between 47°S and the Southern Polar Front (S-PF) at ~61°S ...
Meeting Document : WS-BSO-07/P5 : Autor(es): Hunt, B.P.V and G. Hosie
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Microincrement analysis in otoliths of Notothenia rossii fingerlings from the South Shetland Islands to estimate early life history timings and to validate annulus formation
phase fingerlings selected from a total sample of 364 early juveniles caught mainly in summer from 2003 ... to 2010 at Potter Cove, South Shetland Islands, allowed to provide insights on early life history ... date of capture showed two main periods of larval hatching separated by 5-6 months, one in late summer ... , indicating a timing of demersal settlement of about eight months from hatching. The age/length frequency ...
Meeting Document : WG-FSA-12/04 : Autor(es): E. Barrera-Oro (Argentina) and M. La Mesa (Italy)
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Review of the technical recommendations for the Patagonian toothfish fishery in order to minimize by-catch
account. The present document aims at informing the participants about the content of these technical ... technical recommendations are given below. At the end of the 2011-2012 fishery campaign, the results ... Abstract: The Patagonian toothfish fishery in the EEZ of Kerguelen (division 58-5-1) and Crozet ... (subarea 58-6) is under the management of the competent French authority, the French Southern and Antarctic ...
Meeting Document : SC-CAMLR-XXX/BG/10 : Autor(es): Delegation of France
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IMPACTS OF CLIMATE CHANGE ON ANTARCTIC MARINE ECOSYSTEMS: A CALL FOR ACTION
decade, but little in the way of policy or operational change has resulted at CCAMLR. Over the past 50 ... years major alterations of the ecological workings of the Southern Ocean have been underway. These ... Western Antarctic Peninsula has warmed more than four times faster than the average rate of Earth’s ... the distribution and abundance of those species whose natural history patterns are closely tied to sea ...
Meeting Document : CCAMLR-XXVII/BG/27 : Autor(es): Submitted by ASOC
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Fatty acid signature analysis from the milk of Antarctic fur seals and southern elephant seals from South Georgia: implications for diet determination
Abstract: Fatty acid signature analysis (FASA) makes use of specific fatty acids, as well as ... entire profiles, to study dietary relationships at different trophic levels. Previously, FASA has been ... misleading. This study examined fatty acid profiles in milk from two species of pinniped from the Southern ... elephant seals (Mirounga leonina) in 1988 (n=53) at South Georgia. Lipids were extracted and fatty acid ...
Meeting Document : WG-EMM-99/44 : Autor(es): D.J. Brown, I.L. Boyd, G.C. Cripps and P.J. Butler (United Kingdom)