Résultats de la recherche
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CCAMLR ecosystem monitoring and a feedback management procedure for krill
-term declines in land-based predator performance (e.g., reproductive performance) that may be ... attributable to loss of prey through fishing activities. The principal fishery in the CCAMLR Convention Area is ... the krill fishery and this paper examines ways in which the information being obtained from the ... Program has been developing a technique which might detect short-term declines in land-based predator ... activities. The principal fishery in the CCAMLR Convention Area is the krill fishery and this paper examines ... ways in which the information being obtained from the Ecosystem Monitoring Program might be ... discussions (see Nicol, 1991 for review) and resulted in the establishment of a Precautionary Catch Limit of ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 345–350 : Auteur(s): Constable, A.J.
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Register of non-CEMP time-series data
time series data that were of utility in support of the work of WG-EMM, including datasets derived from ... South African and French seabird and pinniped monitoring programs in the southern Indian Ocean (SC-CAMLR ... -XXII, Annex 4, paragraph 2.10). Non-CEMP data of interest are listed in Tables 1-3. Author(s ...
Meeting Document : WG-EMM-04/9 : Auteur(s): Secretariat
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BOOK REVIEW: WHALES OF THE SOUTHERN HEMISPHERE: BIOLOGY, WHALING, AND PERSPECTIVES OF POPULATION RECOVERY by Y. A. Mikhalev
Abstract: Examined the distribution and migration patterns of whales in the Southern Hemisphere ... . The presence of a new species of killer whale in the Antarctic, Orcinus nana, is shown. The impacts of ... extermination of whales in the Antarctic ecosystem are examined. Regions are defined which could be used as ...
Meeting Document : WG-FSA-09/11 : Auteur(s): Delegation of Ukraine
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Krill community studies using net and hydroacoustic sampling techniques
abundance of krill. In an attempt to address the effect that variability in sampling gear type may have on ... of these types of samp1ing gear commonly used in the Antarctic has been initiated. Author(s): J.R ...
Meeting Document : SC-CAMLR-VI/BG/45 : Auteur(s): J.R. Green, J. Wormuth and V. Loeb (USA)
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Short communication: Diet composition of deepwater icefish Chionobathyscus dewitti Andriashev et Neelov, 1978 (Chionobathyscus, Channichthyidae) from the Ross Sea area
analyzed icefish individuals were taken from stomachs of toothfish caught in the Ross Sea in 2010 from ... board the longliner “ No. 1 IN SUNG ”. Author(s): A.F. Petrov (Russia) Title: Short communication ...
Meeting Document : WG-FSA-10/11 : Auteur(s): A.F. Petrov (Russia)
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Alternative method of the age composition assessment on the basis of surveys length data using mixture distributions
2000, 2002, 2004 in the South Georgia area, it is demonstrated that the method by Aitchison and ... bootstrap method result in different estimates of mean fish density in the length series. Verification of ... Mare commonly used by CCAMLR in icefish age composition of abundance indices determination. To solve ...
Meeting Document : WG-FSA-05/78 : Auteur(s): P. Gasyukov (Russia)
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A review of models of Southern Ocean ecosystems: krill, ecosystems and the impacts of harvesting
Abstract: An ecosystem approach for the management of human activities in the Southern Ocean is ... enshrined in the principles of the Commission for the Conservation of Antarctic Marine Living Resources ... in the world. The main categories we consider are models of krill populations and life cycles ... , predator-prey models and models of ecosystems. A range of approaches has been developed in each of these ...
Meeting Document : WG-EMM-04/67 : Auteur(s): S.L. Hill, E.J. Murphy, K. Reid, P.N. Trathan (United Kingdom), A. Constable (Australia)
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Sampling toothfish from longlines with unequal probabilities
with less catch effort than those outside; or more generally, sampling effort is applied in inverse ... unequal probabilities which, if unaccounted for, can lead to serious biases in estimates of population ... vital rates. To resolve this, either the probabilities need to be incorporated in the analysis of ... start a session. Because there is little evidence of a consistent trend in fish sampled over a line, it ...
Meeting Document : WG-FSA-03/85 : Auteur(s): J.R. Ashford (USA)
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Are krill recruitment indices from meso-scale survey representative for larger areas?
Abstract: The present contribution uses data from German surveys in the 1980’ies and the US LTER ... programme which continuously collected krill demography data since 1993 during the austral summer season in ... ) and two-year old (R2) krill differ substantially between years. However, results were in conformity ... classes of the age-one-group which occur in the samples of some years. Author(s): V. Siegel (Germany ...
Meeting Document : WG-EMM-02/20 : Auteur(s): V. Siegel (Germany), R.M. Ross and L.B. Quetin (USA)
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Fecundity and size at 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 ... , Macrourus holotrachys caught as bycatch in the Patagonian toothfish longline fishery conducted around South ... final ovarian development is a prolonged process in M. holotrachys which probably lasts for a period of ... greater than a year. Sex ratios of specimens caught in the longline fishery are highly skewed with females ...
Meeting Document : WG-FSA-02/26 : Auteur(s): T. Mulvey, S.A. Morley, M. Belchier and J. Dickson (United Kingdom)