Search results
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Further computations of the consequences of setting the annual krill catch limit to a fixed fraction of the estimate of krill biomass from a survey
in the middle of the growth season as for model 1 (i.e., in mid-December: t = 1.5/12). As M now varies ... the growth period slightly exceed losses resulting from natural mortality (note that the growth model used ... the balance of the 'year' (growth having ceased): In the middle of the growth season their mass-at-age ... 2: The survey estimate of biomass is made in the middle of the growth season (i.e. mid-December), and prior ... Paper Title: Further computations of the consequences of setting the annual krill catch limit to ... a fixed fraction of the estimate of krill biomass from a survey Abstract / Description: Butterworth ... et al. (1992) put forward an extension of the harvesting model of Beddington and Cooke (1983) to ... relate potential krill yield to a pre-exploitation survey estimate of krill biomass. In this paper, the ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 81–106 : Author(s): Butterworth, D.S., G.R. Gluckman, R.B. Thomson, S. Chalis, K. Hiramatsu and D.J. Agnew
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A balanced trophic model of the ecosystem of the Ross Sea, Antarctica, for investigating effects of the Antarctic toothfish fishery
antarctica) and mesozooplankton (mainly copepods) are probably the major middle-trophic level link between ... ) and mesozooplankton (mainly copepods) are probably the major middle-trophic level link between primary production ...
Meeting Document : WG-EMM-07/18 : Author(s): M.H. Pinkerton, S.M. Hanchet and J. Bradford-Grieve (New Zealand)
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Preliminary results of RV Dmitriy Stefanov researches in the Antarctic area of the Atlantic Ocean in April 1992
revealed the krill accumulation in the contour, and the second two showed the loss. The accumulation was 52 ... thous. t as high as the loss. The researches pointed out that fishing aggregation stability is mainly ... accumulation in the contour, and the second two showed the loss. The accumulation was 52 thous. t as high ... as the loss. The researches pointed out that fishing aggregation stability is mainly determined by the water ...
Meeting Document : WG-CEMP-92/33 : Author(s): L.G. Maklygin, V.N. Shnar, A.V. Remeslo, A.P. Malyshko, I.A. Trunov, I.A. Barabanov, V.P. Shopov (Russian Federation) and A.G. Shepelev (Ukraine)
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e-sc-xvi-a4-appD.pdf
... not collected due to biological circumstances, for example the animals in question died during the course ... average conditions for the predator. For this reason, the sign of the transformed fur seal foraging trip ... and bouts of dives, is to examine the cumulative time spent submerged during a foraging trip in relation ... that the data consists of records for individual foraging trips and that these are from different animals ... . For this reason, the sign of the transformed fur seal foraging trip duration was reversed. The ... submerged during a foraging trip in relation to cumulative time spent at sea. The slope of this ... animals in question died during the course of the season (e.g. death of chicks 11 before fledging as ... return from a foraging trip, is not observed before the end of the period available for observation
application/pdf attached to:WG-EMM-Stats-97
Meeting Report : WG-EMM-Stats-97
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Food consumption estimates of southern elephant seal females during their post-breeding aquatic phase at South Shetland Islands
in a loss of 35% of the initial mass, comprising 63% of initial body fat and 20% of initial body protein ... gained while at sea. However, protein loss expressed in absolute terms or as a proportion of that present ... Island (25 de Mayo). During lactation females spent a mean of 6021±1365 Mj, which resulted in a loss ... . However, protein loss expressed in absolute terms or as a proportion of that present at the beginning ...
Meeting Document : WG-EMM-04/33 : Author(s): A.R. Carlini, G.A. Daneri, M.E.I. Márquez (Argentina), H. Bornemann (Germany), H. Panarello, R. Casaux (Argentina), S. Ramdohr and J. Plötz (Germany)
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Operational interactions between cetaceans and the Patagonian toothfish (Dissostichus eleginoides) industrial fishery off Southern Chile
fishing grounds are also traditional feeding grounds for sperm whales. Monetary loss associated ... ) for the whole fleet, with a mean loss per set of USD$138 (C.I. 95% USD$74,76- 249,3). Author(s): R. Hucke-Gaete ... are also traditional feeding grounds for sperm whales. Monetary loss associated with operational ... , with a mean loss per set of USD$138 (C.I. 95% USD$74,76 - 249,3). ...
Meeting Document : WG-FSA-03/95 : Author(s): R. Hucke-Gaete, C.A. Moreno and J.A. Arata (Chile)
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On the power to detect changes using the standard methods for monitoring parameters of predatory species
foraging trips (A5.1), penguin breeding success (A6.1), penguin chick diet (A8.1), and fur seal foraging ... trip duration (C2.0). The other Standard Methods are not evaluated because the power analysis ... shifts by penguins(Standard Method A2.1), duration of penguin foraging trips (A5.1), penguin breeding ... success (A6.1), penguin chick diet (A8.1), and fur seal foraging trip duration (C2.0). The other Standard ... by penguins (Standard Method A2.1), duration of penguin foraging trips (AS.1), penguin breeding success (A6.1 ... ), penguin chick diet (A8.1), and fur seal foraging trip duration (C2.0). The other Standard Methods ... considered here. 381 3.5 Duration of Foraging Trips (A5.1) The design for monitoring the duration ... of foraging trips is a nested, or hierarchical, experiment. That is, for any particular year, several ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 377–397 : Author(s): Boveng, P. and J.L. Bengtson
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An Apparent Decrease in the Prevalence of “Ross Sea Killer Whales” in the Southern Ross Sea
of very abundant penguin, seal and whale components, loss of the toothfish option for Ross Sea killer ... with that of the Pacific coast of Canada, where numbers of resident killer whales have decreased following the loss ... of very abundant penguin, seal and whale components, loss of the toothfish option for Ross Sea killer ... with that of the Pacific coast of Canada, where numbers of resident killer whales have decreased following the loss ...
Meeting Document : WG-EMM-09/P01 : Author(s): D.G. Ainley, G. Ballard and S. Olmastroni
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TARGET STRENGTH STUDIES ON ANTARCTIC SILVERFISH (PLEURAGRAMMA ANTARCTICUM) IN THE ROSS SEA
a necessary support to in situ and ex situ results. Antarctic Silverfish is an important component of Middle ... to in situ and ex situ results. Antarctic Silverfish is an important component of Middle Trophic Level ...
Meeting Document : SG-ASAM-09/10 : Author(s): M. Azzali, I. Leonori, I. Biagiotti, A. De Felice, M. Angiolillo, M. Bottaro and M. Vacchi (Italy)
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Contrasting population changes in sympatric penguin species in association with climate warming
population decreases in the three penguin species. With the loss of sea ice, Adélie penguins were less ... loss. Gentoo penguins were temporarily affected by negative anomalies in regional sea ice ... decreases in the three penguin species. With the loss of sea ice, Adélie penguins were less buffered against ... of locally increased ice cover, but showed less variable, nonlinear responses to sea ice loss. Gentoo ...
Meeting Document : WG-EMM-06/P3 : Author(s): J. Forcada, P.N. Trathan, K. Reid, E.J. Murphy and J.P. Croxall (United Kingdom)