Resultados de la búsqueda
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DEVELOPMENT OF EFFECTIVE MITIGATION TO REDUCE SEABIRD MORTALITY IN THE ICEFISH (CHAMPSOCEPHALUS GUNNARI) TRAWL FISHERY IN SUBAREA 48.3
Abstract: Seabird mortality levels caused by net entanglement in the icefish trawl fishery in ... Subarea 48.3 became a concern in the late 1990s. At this time there was little knowledge on how to ... introduced for Subarea 48.3 in 2001. This provided a strong commercial incentive for industry to develop ... measures to reduce seabird bycatch levels. This resulted in the development and operational trialing of ...
Meeting Document : WG-IMAF-09/15 : Autor(es): B. Sullivan (BirdLife International), J. Clark (United Kingdom), K. Reid (Secretariat) and E. Reid (BirdLife International)
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Natural fluctuations in the abundance of krill with due regard to global climate changes in the southern hemisphere: forecasting possibilities
Abstract: The eco systematic studies in biology and hydrology conducted in the Atlantic sector of ... the South Ocean in recent years made it possible for scientists to establish a rather clear ... ;success" in the reproduction of krill (Euphausia superba) and salp (Salpa tompsoni) (SC-CAMLR-XVI4 ... al., 1997) and other researches in the Antarctic Peninsula Subarea 48.1 showed good correlation ...
Meeting Document : WG-EMM-98/52 : Autor(es): K. Shust (Russia)
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Reports on abundance and biological information of toothfish in Division 58.4.4 a & b by Shinsei maru No. 3 in 2013/14 season
information of toothfish in the research blocks 58.4.4b_1 (SSRU 58.4.4C) and 58.4.4b_2 (SSRU 58.4.4D) of ... trotline system were made in the blocks. Total catch of Dissostichus eleginoides (excluding those tagged ... and released) was 26.6 tonnes in the survey area. Mean CPUEs in terms of weight of D. eleginoides was ... 32.9 kg / km (CV = 11.3%) and 38.3 kg / km (CV = 13.6%) in the blocks 58.4.4b_1 and 58.4.4b_2 ...
Meeting Document : WG-SAM-15/14 : Autor(es): Delegation of Japan
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Research plan for toothfish in Division 58.4.4 b by Shinsei maru No. 3 in 2015/16
Abstract: In this document, we revise stock status assessments of D. eleginoides in research ... results using CASAL models in research block 58.4.4b_1 are described in a separated document. The ... estimated stock size in block 58.4.4b_1 was 597, 336 and 553 tonnes in CPUE analogy method, Petersen method ... and CASAL OB_1b model (vulnerable biomass in 2014), respectively. The stock sizes of D. eleginoides in ...
Meeting Document : WG-SAM-15/13 : Autor(es): Delegation of Japan
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Interaction of sperm whales with bottom longline and the Mammal and Bird Excluding Device (MBED) operation in the Patagonian toothfish (Dissostichus eleginoides) fishery in the southwestern Atlantic
the toothfish fishery (Dissostichus eleginoides) carried out by longline fishing vessels operating in ... two different fishing zones at 40º and 50º latitudes in the Southwestern Atlantic from March to May ... 2007. 62 hauls were performed in the northern zone (latitude 40º 00’ S), while 41 hauls were performed ... in the southern zone (latitude 50º 00’ S) at an average depth of-1282 m. 57.2% of the total number of ...
Meeting Document : WG-FSA-07/23 : Autor(es): O. Pin and E. Rojas (Uruguay)
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Fisheries in the Southern Ocean – an ecosystem approach. Trans. Roy. Soc. Lond. (in press)
extended to the application of a precautionary approach in the late 1980’s. In our review we deal primarily ... management of the living resources of the Southern Ocean. To assist the Commission in meeting objectives, as ... set out in Article II, 3, the Scientific Committee established the CCAMLR Ecosystem Monitoring Program ... albatrosses, penguins, petrels, fur seals. Fisheries in the Southern Ocean followed the fate of other ...
Meeting Document : SC-CAMLR-XXIV/P01 : Autor(es): Kock, K.-H., K. Reid, J. Croxall and S. Nicol
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Characteristics of seasonal variation in diurnal vertical migration and aggregation of Antarctic krill (Euphausia superba) in the Scotia Sea, using the Japanese fishery data
Abstract: We examined seasonal variation in CPUE (catch per volume of trawled water) and diurnal ... fisheries data. Average trawling depth usually showed a marked diurnal change during summer and winter in SS ... did not show such diurnal vertical migration during winter in SG, being deepest around at morning ... twilight and shallowest around at evening twilight. The range of trawling depth was narrower in the certain ...
Meeting Document : WG-EMM-04/44 : Autor(es): K. Taki, T. Hayashi and M. Naganobu (Japan)
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An 8-year cycle in krill biomass density inferred from acoustic surveys conducted in the vicinity of the South Shetland Islands during the austral summers of 1991/1992 through 2001/2002
Abstract: Data from single and multi-frequency active acoustic surveys conducted annually in the ... -seasonal variations in krill biomass density and dispersion were derived from the re-processed data set for ... surveys conducted in the austral summers of 1991/1992 through 2001/2002. Estimated biomass density ranged ... from 1 to 60 g m–2, decreasing from mid-range levels in 1991/1992 to a minimum in 1992/1993–1993/1994 ...
Meeting Document : WG-EMM-03/6 : Autor(es): R.P. Hewitt, D.A. Demer and J.H. Emery (USA)
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Revised research plan for toothfish in Divisions 58.4.4a and 58.4.4b by the Shinsei Maru No. 3 in 2010/11
Abstract: In order to clarify the stock status and biological characteristics of Dissostichus spp ... . In Division 58.4.4 a & b, we proposed the research plan for toothfish in the Division by Shinsei ... Maru No. 3 to be conducted throughout the whole four SSRUs (A-D) in the Division in April-June 2011 in ... the WG-SAM 2010 meeting. However, during the first survey in 2009/10, when the research was surveyed ...
Meeting Document : WG-FSA-10/49 : Autor(es): Delegation of Japan
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DEVELOPING FOUR PLAUSIBLE PARAMETERISATIONS OF FOOSA (A SO-CALLED REFERENCE SET OF PARAMETERISATIONS) BY CONDITIONING THE MODEL ON A CALENDAR OF EVENTS THAT DESCRIBES CHANGES IN THE ABUNDANCES OF KRILL AND THEIR PREDATORS IN THE SCOTIA SEA
with the agreed calendar, as specified by the WG-SAM, that describes changes in the abundances of krill ... and their predators in the Scotia Sea. First, we compiled a set of base parameterizations from ... information in the literature and following specifications laid out by the WG-SAM. These base ... determines the degrees to which the survival of juvenile predators depends on foraging success in their first ...
Meeting Document : WG-EMM-08/13 : Autor(es): G.M. Watters, J.T. Hinke (USA) and S. Hill (United Kingdom)