Résultats de la recherche
-
Possible effects of different levels of fishing on krill on predators - some initial modelling attempts
Abstract: An initial attempt is made to develop the model1ing framework suggested by the Joint ... Meeting of the CCAMLR's WG-Kril1 and WG-CEMP in 1992 to address this issue. First. estimates are made ... of the parameters of predator survival rates as functions of krill abundance, by considering a krill ... developed, in which krill abundance fluctuations impact the predator population, but not vice versa ...
Meeting Document : WG-KRILL-93/43 : Auteur(s): D.S. Butterworth and R.B. Thomson (South Africa)
-
Variability of krill fishery operations in Subarea 48.2 in relation to fishing methods: spatial–temporal distribution of CPUE and of fishing efforts
Abstract: The author continue to analyze krill fishery data for understanding fishery operations ... in Subarea 48.2 with special attention to the period 2006-2011 which is characterized by the highest ... values of standardized CPUE indices in the Subarea 48.2 for the last 25 years. The paper provides the ... to differences between national fleets. Our results provide the evidence that ‘high CPUE’ regime’ in ...
Meeting Document : WG-EMM-14/22 : Auteur(s): S. Kasatkina (Russia)
-
Are penguins and seals in competition for Antarctic krill at South Georgia?
Abstract: The Antarctic fur seal and macaroni penguin are sympatric top predators that occur in ... the Southern Ocean around South Georgia where they are, respectively, the main mammal and bird ... consumers of Antarctic krill. In recent years the population of fur seals has increased whereas that of ... we test the hypothesis that the expanded fur seal population at South Georgia may have resulted in ...
Meeting Document : WG-EMM-01/22 : Auteur(s): K.E. Barlow, I.L. Boyd, J.P. Croxall, I.J. Staniland, K. Reid and A.S. Brierley (United Kingdom)
-
Conservation of Antarctic pack-ice seals with increasing krill fishing and environmental change
Abstract: The management of Antarctic krill and conservation of its predators requires ... understanding about the compound effects of changing habitats, ecosystem interactions, and fishing practices ... . For Antarctic pack-ice seals, a main group of krill predators, we report the spatial density and krill ... consumption in the West Antarctic Peninsula (WAP)-western Weddell Sea area, the main fishery region; and we ...
Meeting Document : WS-MPA-11/24 : Auteur(s): J. Forcada, P.N. Trathan (UK), P.L. Boveng (USA), I.L. Boyd (UK), D.P. Costa (USA), M. Fedak (UK), T.L. Rogers and C.J. Southwell (Australia)
-
Net-based verification of acoustic techniques used to identify Antarctic krill
Abstract: Acoustic target classification protocols recently adopted by utilising the Stochastic ... during two cruises to the South Georgia region in 1996. For each net-sampled aggregation the differences ... . Using the SDWBA model, dB difference identification ranges based on the length-frequencies of krill in ... of 2-16 dB and (iv) '2 freq 2-12'-with an Sv120-38 range of 2-12 dB The '3 freq model ...
Meeting Document : SG-ASAM-09/04 : Auteur(s): J. Watkins and S. Fielding (United Kingdom)
-
Rapport des responsables de l'atelier conjoint CPE/SC-CAMLR sur le changement climatique et son suivi
Abstract: The Joint CEP/SC-CAMLR Workshop on Climate Change and Monitoring was held in Punta ... Arenas, Chile (19-20 May 2016). A workshop report was prepared by the conveners (Dr Susie Grant and Dr ... Polly Penhale), and is provided in full below. The report was discussed at the Committee for ... ), and at WG-EMM-16 in Bologna, Italy (WG-EMM-16 Report, paragraphs 6.8 to 6.28). The CEP agreed that the ...
Meeting Document : SC-CAMLR-XXXV/07 : Auteur(s): Delegations of the United Kingdom and the USA
-
Proposition préliminaire d'aire marine protégée du domaine 1 PARTIE A-1 : Zones prioritaires de conservation
Abstract: This document contributes to the planning process for the designation of a Domain 1 MPA ... led by Argentina and Chile. The process has resulted in the compilation, analysis, integration and ... display of a large amount of information, not only contributing to the best science available but also ... providing a platform for the sharing and visualization of information, highlighting the multinational ...
Meeting Document : SC-CAMLR-XXXVI/17 : Auteur(s): Delegations of Argentina and Chile
-
Revised CASAL model for D. eleginoides with updated biological parameters at Division 58.4.4b
Abstract: In order to achieve the milestone “1.1 Update biological parameters”(SC-CAMLR-37 Report ... ogice) of Dissostichus eleginoides for Division 58.4.4b were updated based on the data gathered up to ... the 2017/18 fishing season by France and Japan. Furthermore, the updated CASAL models were developed ... to conduct an exploration of the impact of different scenarios of depredation and IUU in order to ...
Meeting Document : WG-SAM-2019/30 : Auteur(s): T. Okuda and F. Massiot-Granier
-
Adult male Antarctic fur seals: tourists, trouble makers or marine ecosystem sentinels?
through the partitioning of resource exploitation either temporally or spatially. Understanding the ... spatial and temporal overlap between predators that exploit the same resource then is fundamental to ... understanding the impacts one predator can have on another. The fishery for Antarctic krill operates along the ... west Antarctic Peninsula and the Scotia Sea, and while there are calls for its expansion there is a ...
Meeting Document : WG-EMM-2019/49 : Auteur(s): A. Lowther, C. Lydersen and K. Kovacs
-
WG-EMM-97
Provisional agenda and provisional annotated agenda for the 1997 meeting of the Working Group on Ecosystem ... -EMM-97/04 Draft standard method for the measurement of annual survival rate and pregnancy rate in ... Antarctic fur seals Staniland, I.J., Reid, K. WG-EMM-97/06 Hydrographic conditions in the Elephant Island ... predators and fish and cephalopods in the Southern Ocean Boyd, I.L., Prince, P.A., Croxall, J.P. WG-EMM-97 ...
Meeting