Résultats de la recherche
-
Evaluating methods to assess yield of Patagonian toothfish (Dissostichus eleginoides) in CCAMLR Division 58.5.2
currently being used for Patagonian toothfish in Division 58.5.2, the types of data and observations of the ... Subgroup on Assessment Methods workshop to be held prior to the meeting of WG-FSA in 2005. These results ... will be presented in an updated version of this paper provided to the workshop. Author(s): A.J ... Abstract: This paper describes aspects of the Management Strategy Evaluation (MSE) being ...
Meeting Document : WG-FSA-05/69 : Auteur(s): A.J. Constable, I. Ball, B. Raymond, S. Candy, R. Williams (Australia) and A. Dunn (New Zealand)
-
Population assessment of Patagonian toothfish in Subarea 48.4 – 2011 update
Abstract: In this paper we update the assessment of D. eleginoides in the northern half of ... catch at age model generates a yield of 52 tonnes based on CCAMLR decision rules. In 2006 the northern ... , and for the purpose of the experimental work leading to a stock assessment. Data collected in the ... management of D. eleginoides in the northern half of 48.4, but to date insufficient information has been ...
Meeting Document : WG-FSA-11/38 : Auteur(s): J. Roberts, R. Mitchell and R. Wakeford (United Kingdom)
-
Entanglement of Antarctic fur seals Arctocephalus gazella in man made debris at Signy Island, South Orkney Islands, 1998/99
parallel study undertaken at Bird Island, South Georgia in 1998/99. These indicated that the number of ... entangled in other areas, such as South Georgia, where fishing activity is higher. The continued presence of ... Abstract: The results of the third annual survey of entanglement of Antarctic fur seals at Signy ... Island, South Orkney Islands are reported for the 1998/99 summer season. There were ten sightings of ...
Meeting Document : SC-CAMLR-XVIII/BG/06 : Auteur(s): Delegation of the United Kingdom
-
Peculiarities of Euphausia superba size composition in Statistical Subarea 48.2 (South Orkney Islands)
E.superba was undertaken by means of comparision of various size groups of curstacean distribution in the ... maxima, than in the norhtern part of the region. These featurese are concerned mainly to E.superba with ... only in the southern part of the region, but also in eastern and especially to its north-east parts. In ... . Picture complicated due to system of current, namely advection of Weddell Sea waters to the north in ...
Meeting Document : WG-KRILL-91/11 : Auteur(s): V.I. Latogursky and R.R. Makarov (USSR)
-
Catchability of midwater trawls in relation to krill fishery
, krill aggregations distribution in the study area is discussed. It is shown that while the trawl ... selectivity affects krill length composition in each trawl sample, the trawl catchability affects the ... estimation of total krill lengths distribution, obtained on the basis of trawl samples from different catched ... in the study area. Several approaches to trawl samples processing are discussed. It is shown that the ...
Meeting Document : WG-EMM-98/20 : Auteur(s): S.M. Kasatkina (Russia)
-
Stock structure of Antarctic toothfish in Statistical Area 88 and implications for assessment and management
Abstract: We review the stock structure of Antarctic toothfish in Statistical Area 88 with the ... the movement patterns and linkages of Antarctic toothfish in the 80–120 cm size range, throughout the ... portions of the Bellingshausen Sea (SSRUs 88.3A-D) and juveniles in SSRUs 88.2C–G is a priority. Author(s ... aim of characterising the likely stock boundaries relative to stock assessments. We include ...
Meeting Document : WG-SAM-14/26 : Auteur(s): S.J. Parker, S.M. Hanchet and P.L. Horn (New Zealand)
-
A study of UK and Russian surveys using acoustics to augment trawling methods in shelf waters off South Georgia (Subarea 48.3)
differences in the gear used and how much was due to natural spatial/temporal variability of the stock. The ... portion of icefish biomass was located in the water column. Thus the traditional approach of using bottom ... differences between the surveys and discuss how much of the variation between the vessels was due to ... trawls to assess icefish standing stock has resulted in biased estimates below the true value: acoustic ...
Meeting Document : WG-FSA-02/56 : Auteur(s): S. Kasatkina, P. Gasyukov (Russia), C. Goss, I. Everson, M. Belchier, T. Marlow, A. North and M. Collins (United Kingdom)
-
Model-based, ecosystem risk assessments of MPA scenarios in Planning Domain 1
to assess some of the risks associated with two marine protected area (MPA) scenarios in Planning ... the USA Title: Model-based, ecosystem risk assessments of MPA scenarios in Planning Domain 1 ... -Fishery Model to assess the risks of distributing catch limits for krill among small-scale management ... units (SSMUs) in Subareas 48.1, 48.2, and 48.3. Here we describe a method to update the ...
Meeting Document : SC-CAMLR-XXXVI/BG/27 : Auteur(s): Delegation of the USA
-
Entanglement in man-made debris of Antarctic fur seals at Bird Island, South Georgia
Abstract: The incidence of entanglement in man-made debris by Antarctic fur seals (Arctocephalus ... their collars removed. This represents a reduction of 88% in the number of entangled seals reported in ... entanglement include a reduction in fishing activity in the South Georgia area, a decrease in the amount of ... common type of neck collar material was polypropylene straps (50%) of the type used in packaging bands ...
Meeting Document : CCAMLR-X/BG/05 : Auteur(s): Delegation of UK
-
Uncertainty in acoustic surveys of Antarctic krill
in species delineation was also investigated, through the development of a statistical technique for ... . Combining these four sources of uncertainty, the overall bias in krill density estimates was estimated to be ... Abstract: Studied were four primary sources of uncertainty in krill density estimates from ... acoustic surveys. The variance in system calibration with a standard sphere was evaluated in relation to ...
Meeting Document : WG-EMM-95/72 : Auteur(s): Demer, D.A.