Resultados de la búsqueda
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Entanglement of Antarctic fur seals Arctocephalus gazella in man made debris at Signy Island, South Orkney Islands, 1998/99
observed on three separate occasions. Two additional sightings were of animals that had been previously ... 66% since the previous season but was 17% lower than 1996/97. Data are compared with results from a ... parallel study undertaken at Bird Island, South Georgia in 1998/99. These indicated that the number of ... of entanglements in fishing net. 039;Severe039; and 039;very severe 039; injury was being ...
Meeting Document : SC-CAMLR-XVIII/BG/06 : Autor(es): Delegation of the United Kingdom
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ASSESSMENT OF PATAGONIAN TOOTHFISH POPULATION IN THE NORTH OF SUBAREA 48.4 USING DATA FROM A FOUR-YEAR TAGGING EXPERIMENT
early closure of the fishery with only 58.9 t of the 75 t TAC of D. eleginoides taken; 2. The target ... simple Petersen and local CPUE estimates, with a B0 of 1143 t and B2009/B0 of 85%. 9. The sustainable ... tagging rate of 5 fish per tonne was exceeded by both vessels, with 344 D. eleginoides tagged and released ... . Evidence of gonad development in 2008/09 suggests that D. eleginoides may spawn in the North of 48.4 in ...
Meeting Document : WG-FSA-09/17 : Autor(es): J. Roberts and D.J. Agnew (United Kingdom)
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The application of CCAMLR Ecosystem Monitoring Program (CEMP) standard methods in the Antarctic site inventory project
project039;s methodology, particularly with respect to counting penguin nests and chicks. At each site ... soon-to-be-effective Antarctic Environmental Protocol; designing future monitoring programmes to detect ... landing beaches where visitors access a site, allowing comparisons over time between areas that have much ... human activity and those without such activity. A power analysis indicates the Inventory039;s ...
Meeting Document : WG-EMM-97/38 : Autor(es): Naveen, R.
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THE RISKS OF NOT DECIDING TO ALLOCATE THE PRECAUTIONARY KRILL CATCH LIMIT AMONG SSMUS AND ALLOWING UNCONTROLLED EXPANSION OF THE KRILL FISHERY UP TO THE TRIGGER LEVEL
here. Our results demonstrate that i) status quo management may jeopardize the Commission039;s ... Scientific Committee during 2008, and the caveats associated with that previous advice also apply here. Given ... allocation has met the "burden of proof" that would be required for decision making. Author(s ... risks associated with three options for a Stage-1 allocation of the precautionary krill catch limit ...
Meeting Document : WG-EMM-09/12 : Autor(es): G.M. Watters (USA), S. Hill (United Kingdom), J.T. Hinke (USA) and P. Trathan (United Kingdom)
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Diet variability and reproductive performance of macaroni penguins (Eudyptes chrysolophus) at Bird Island, South Georgia
frequency occurrence of T. gaudichaudii both increased with a decreasing proportion of E. superba in the ... or amphipods and 27 % were mixed, suggesting a sigmoidal functional response. The energy and mass of ... due to higher energy or time costs associated with feeding on alternative prey types. Author(s): C.M ...
Meeting Document : WG-EMM-12/17 : Autor(es): C.M. Waluda, S.L. Hill, H.J. Peat and P.N. Trathan (United Kingdom)
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Assessment models for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea including data from the 2005/06 season
reference case resulted in a much higher estimate of initial biomass, though this appeared to be almost ... better explain these data resulted in estimates of initial and current biomass that were very similar to ... small effect that slightly modified estimates from the models, suggesting that the new data had a ... similar pattern to that of previous years. Preliminary models using tag-recapture data from all vessels ...
Meeting Document : WG-FSA-06/60 : Autor(es): A. Dunn and S.M Hanchet (New Zealand)
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Assessment of the Patagonian Toothfish (D. eleginoides) in Subarea 48.3
therefore be consistent with the CCAMLR decision rule. Author(s): T. Earl, M. Soeffker and C. Darby (United ... . The 2008 year class is estimated to be well above average. Provisional projections indicate that a ... Abstract: Assessment of the Patagonian toothfish (D.eleginoides) in Subarea 48.3 indicates that ... catch limit set at around 2,750 tonnes would be expected to keep the stock at or above 50% of B0 after ...
Meeting Document : WG-FSA-15/59 : Autor(es): T. Earl, M. Soeffker and C. Darby (United Kingdom)
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An integrated stock assessment for the Patagonian toothfish (Dissostichus eleginoides) in Division 58.5.2 using CASAL
cover a highly spatially structured stock. It is recommended that the mark-recapture data not be ... yield using CASAL, 2,306 tonnes, is less than that using the GYM, 2483 t. The reasons for this ... yields be estimated by integrating across uncertainties in natural mortality. It is also recommended that ... using CASAL and demonstrates that all of the data available for assessments, including surveys, fishery ...
Meeting Document : WG-FSA-06/64 : Autor(es): A. Constable, S. Candy, T. Lamb and I. Ball (Australia)
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Long-term change in zooplankton communities of the Southern Ocean between 1997 and 2018: implications for fisheries and ecosystems
productivity, sea-surface temperature (SST), mixed layer depth, sea ice and the spatial gradient of SST (as an ... ), Foraminifera, Fritillaria spp., Oithona similis and pteropods. Trend analysis suggests that the environmental ... –0.83% per year averaged across the Southern Ocean, and with much higher rates of increase in some ... regions. In contrast, the environmental suitability for pteropods is predicted to be decreasing in the ...
Meeting Document : WG-EMM-2019/66 : Autor(es): M.H. Pinkerton, M. Decima, J. Kitchener, K. Takahashi, K. Robinson, R. Stewart and G.W. Hosie
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Fishing and conservation in southern waters
with the 1970039;s and 1980039;s, when most fisheries were subsidized, economic considerations and ... stocks we re implemented only from 1989 onwards. There is evidence that some fish stocks have started to ... appears to be remote at present. The way forward is likely to be a single-species model for the krill ... Southern Ocean is likel y to be much larger than current catches. The fishery potential of krill and ...
Meeting Document : SC-CAMLR-XII/BG/11 : Autor(es): Delegation of Germany