Resultados de la búsqueda
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Report from CCAMLR Observer (European Union) on the 41st annual meeting Northwest Atlantic Fisheries Organization (NAFO) (Bordeaux, France, 23 to 27 September 2019)
Author(s): CCAMLR Observer (European Union) Title: Report from CCAMLR Observer (European Union ...
Meeting Document : CCAMLR-38/BG/58 : Autor(es): CCAMLR Observer (European Union)
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Proposal from the European Community and Australia on an amendment to Conservation Measure 148/XVII
Title: Proposal from the European Community and Australia on an amendment to Conservation Measure ...
Meeting Document : SCOI-99/21
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The population ecology of seabirds at Svarthamaren, Dronning Maud Land: causes and consequences of variation in reproductive success of two long-lived seabirds species (Antarctic petrel and south polar skua) at Svarthamaren. An experimental approach
Title: The population ecology of seabirds at Svarthamaren, Dronning Maud Land: causes and ... consequences of variation in reproductive success of two long-lived seabirds species (Antarctic petrel and ... south polar skua) at Svarthamaren. An experimental approach Approval: Approved ...
Meeting Document : WG-CEMP-92/55
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UPDATE OF THE INTEGRATED STOCK ASSESSMENT FOR THE PATAGONIAN TOOTHFISH (DISSOSTICHUS ELEGINOIDES) FOR THE HEARD AND MCDONALD ISLANDS USING CATCH-AT-AGE DATA AND TWO YEARS OF SURVEY ABUNDANCE-AT-AGE DATA
combination of fishery and year had available at least 50 aged fish. For the trawl fisheries that were divided ... the coefficient of variation (CV) for the abundance-at-age, assuming a lognormal distribution, each ... predictions of numbers-at-age and proportions-at-age. In other work, this matrix was found to depend on the ... prevalent (e.g. for age 8 the percentage of errors that were zero was estimated from previous work at 40 ...
Meeting Document : WG-SAM-09/09 : Autor(es): S.G. Candy (Australia)
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Comparison of estimators of effective sample size for catch-at-age and catch-at-length data using simulated data from the Dirichlet-multinomial Distribution
approximate but simple way of modelling the distribution of catch-at-age or catch-at-length frequencies using ... Abstract: The incorporation of “effective sample size” (ESS) in integrated assessments is an ... frequencies. The ESS applied within the definition of the negative log-likelihood contribution to the ... objective function in CASAL determines the implicit weight given to the commercial catch-at-age or catch-at ...
Meeting Document : WG-SAM-07/7 : Autor(es): S.G. Candy (Australia)
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Diet and prey consumption of Antarctic petrels Thalassoica antarctica at Svarthamaren, Dronning Maud Land and at sea outside the colony
Abstract: The diet of the Antarctic petrel Thalassoica antarctica was studied during two years at ... found in other diet studies. Estimates of food consumption for birds breeding at Svarthamaren (c ... at Antarctic petrels from Svarthamaren may fly more than 3,000 km during one foraging trip and may ... consumption of Antarctic petrels Thalassoica antarctica at Svarthamaren, Dronning Maud Land and at sea outside ...
Meeting Document : WG-EMM-97/58 : Autor(es): Røv, N., Lorentsen, S., Klages, N.
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Fecundity and size at sexual maturity of the bigeye grenadier (Macrourus holotrachys) at South Georgia (CCAMLR Subarea 48.3)
at different stages of development suggesting that M. holtrachys may have an extended spawning season ... . Analyses of size at sexual maturity indicate that Lmat 50 occurs at 29cm (pre-anal length) whilst Lint 50 ... sexual maturity of the bigeye grenadier (Macrourus holotrachys) at South Georgia (CCAMLR Subarea 48.3 ... Abstract: Fecundity and size at sexual maturity were investigated in 486 bigeye grenadier ...
Meeting Document : WG-FSA-02/26 : Autor(es): T. Mulvey, S.A. Morley, M. Belchier and J. Dickson (United Kingdom)
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Factors affecting the growth rate and mass at weaning of Antarctic fur seal pups at Bird Island, South Georgia
foraging trips, and the mean duration of both foraging trips at sea and nursing visits ashore on the growth ... and mass at weaning of pups of Antarctic fur seals (Arctocephalus gazella) during the austral summers ... (United Kingdom) Title: Factors affecting the growth rate and mass at weaning of Antarctic fur seal pups ... Abstract: We studied the influence of sex of pup, maternal age, birth date of pup, number of ...
Meeting Document : WG-CEMP-93/09 : Autor(es): N.J. Lunn, I.L. Boyd, T. Barton and J.P. Croxall (United Kingdom)
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Power analyses of CEMP indices for penguins at Admiralty Bay and fur seals at Cape Shirreff and Seal Island
actually exist. We estimated the power of rejecting these null hypotheses at three levels of? (the ... Abstract: We used the program MONITOR to conduct a set of power analyses for CEMP indices ... developed by the US AMLR Program. We consider CEMP indices A2, A3, A5, A6, A7, and A8 for penguins at ... Admiralty Bay, and indices C1 and C2 for fur seals at Cape Shirreff and Seal Island. Our power analyses ...
Meeting Document : WG-EMM-03/52 : Autor(es): G.M. Watters, R.P. Hewitt, W.Z. Trivelpiece and M.E. Goebel (USA)
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Estimation of natural mortality for the Patagonian toothfish at Heard and McDonald Islands using catch-at-age and aged mark-recapture data from the main trawl ground
. An alternative strategy was adopted whereby the catch-at-age and mark-recapture data were restricted ... to the main trawl ground in which the longest time series of catches and the great majority of ... releases and recaptures of tagged fish were available. Catch and releases by age class for this fishery ... were obtained using proportions-at-length and fishery and year specific age length keys (ALKs) for ...
Meeting Document : WG-FSA-10/41 : Autor(es): S. Candy, D. Welsford, T. Lamb, J. Verdouw and J. Hutchins (Australia)