Résultats de la recherche
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Linking population trends of Antarctic shag (Phalacrocorax bransfieldensis) and fish at Nelson Island, South Shetland Islands (Antarctica)
Abstract: This study aims to provide consistent information to explain the steady declining trend ... in the number of breeding pairs of Antarctic shag Phalacrocorax bransfieldensis in two colonies on ... the 1990s up to the mid 2000s over an overall monitoring period of over two decades. It addresses ... of this area, where an intensive commercial fishery for shag prey once operated. The analysis also ...
Meeting Document : WG-EMM-16/P09 : Auteur(s): R. Casaux and E. Barrera-Oro
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Gestion de précaution de la pêcherie de krill antarctique à des échelles spatiales réduites dans le contexte de la variabilité climatique régionale : l'absence de données implique-t-elle une absence d'impact ?
by the krill fishery at specific times or in particular areas might not be considered to be rational ... management. However, we also note that the current network of ecosystem monitoring sites currently makes it ... difficult to obtain the necessary management information at the resolution needed to facilitate ... framework (such as open and closed areas to test contrasting harvesting protocols) to determine whether the ...
Meeting Document : SC-CAMLR-XXXV/11 : Auteur(s): Delegation of the United Kingdom
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Choosing distance between acoustic survey tacks
Abstract: The mathematical model was used to shown that the distance between acoustic survey ... tacks is reasonable to be selected based on the typical size of the surveyed region, allowable relative ... error in the biomass estimate, and the variation coefficient of the concentration density values. It is ... recommended to use the suggested criterion in real hydroacoustic surveys. Author(s): Delegation of the USSR ...
Meeting Document : SC-CAMLR-V/BG/24 : Auteur(s): Delegation of the USSR
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WG-EMM-11
Meeting documents Doc Number Title CCAMLR-XXX/05 Report on the independent review of CCAMLR’s data ... management systems Secretariat WG-EMM-10/P1 RECENT TRENDS IN NUMBERS OF FOUR SPECIES OF PENGUINS AT THE ... elephant seals at the Prince Edward Islands, southern Indian Ocean W.C. Oosthuizen, M.N. Bester, P.J.N. de ... Bruyn and G.J.G. Hofmeyr WG-EMM-10/P2 RECENT TRENDS IN NUMBERS OF CROZET SHAGS BREEDING AT THE PRINCE ...
Meeting
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WS-CRAB-93
Full Name: Workshop on the Management of the Antarctic Crab Fishery Location: La Jolla, USA Date ... documents Doc Number Title WS-CRAB-93/01 Provisional Agenda and Annotation to Provisional Agenda for the ... Workshop on the Management of the Antarctic Crab Fishery WS-CRAB-93/02 List of participants WS-CRAB-93/03 ... List of documents WS-CRAB-93/04 The Antarctic crab fishery: extracts from CCAMLR-XI and SC CAMLR-XI ...
Meeting
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Annotated bibliography: seabird interactions with trawl fishing operations and cooperative research
Abstract: We briefly summarize the available literature (17 documents) on the nature of seabird ... interactions with trawl gear, efforts to date on the development of technologies to prevent these interactions ... , and management imperatives affecting the Alaska trawl fleet. We also summarize available literature on ... cooperative research with the fishing industry (2 documents). The purpose of this review was to bring this ...
Meeting Document : WG-FSA-04/47 : Auteur(s): K. Dietrich and E. Melvin (USA)
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Results of a hydroacoustic survey of Antarctic krill populations in CCAMLR Division 58.4.1 carried out in January to April 1996
CCAMLR Division 58.4.1 for the purposes of estimating overall biomass (B0). The krill biomass in the area ... in the west of the survey area 800-1200E than in the 120°-150°E region. The majority of the krill ... detected were found in the top 80 metres of the water column. Author(s): Higginbottom, I., de la Mare, W ...
Meeting Document : WG-EMM-96/28 : Auteur(s): Higginbottom, I., de la Mare, W., Pauly, T., Nicol, S.
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Broadbandwidth sound scattering and absorption from krill (Meganyctiphanes norvegica), Mysids (Praunus flexuousus and Neomysis integer) and shrimp (Crangon crangon)
(Meganyctiphanes norvegica) over the acoustical bandwidth of 30 to 210 kHz and compared to similar scattering ... measurements made of Antarctic krill (Euphausia superba; Demer and Conti, 2003a). The measurements of total ... target strength (TTS) match the SDWBA model (Demer and Conti, 2003b) recently developed for Antarctic ... krill, indicating its validity for other euphausiids species with similar size and shape. However, the ...
Meeting Document : WG-EMM-04/40 : Auteur(s): S.G. Conti, D.A. Demer (USA) and A.S. Brierley (United Kingdom)
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Precision of growth band determination from eyestalk sections of Antarctic krill (Euphausia superba) preserved in formalin
feedback management of krill fisheries. Samples stored in 70% ethanol provide an opportunity to detect the ... have a greater impact on the feedback management process because this preservation method was more ... common in previous decades. Out of 162 Antarctic krill individuals preserved in 5% formalin, the growth ... bands from eyestalk sections of 134 samples were readable. The relationship between the total length and ...
Meeting Document : WG-EMM-18/P16 : Auteur(s): G.P. Zhu, Y. Yang, Q. Song and H.T. Zhang
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Habitat partitioning in Antarctic krill: spawning hotspots and nursery areas
concentrated within the south-west Atlantic sector, where they support a unique food web and a commercial ... whether “hotspots” of egg production and early stage nursery occurred, and secondly whether the available ... habitat was partitioned between the successive life stages during the austral summer and autumn, when ... extracted data spanning 41 years (1976-2016) from the existing KRILLBASE-abundance and KRILLBASE-length ...
Meeting Document : WG-EMM-2019/20 : Auteur(s): F. Perry, A. Atkinson, S.F. Sailley, G.A. Tarling, S.L. Hill, C.H. Lucas and D.J. Mayor