Résultats de la recherche
-
An approach to feedback management (FBM) of the krill fishery based on routine acoustic data collection and intermittent land-based predator studies
specific scientific studies at regular (multiyear) intervals. The foundations of the proposal are that ... Abstract: The conservation measure regarding (or stipulating) the interim distribution of trigger ... level in the fishery of Antarctic krill in Subareas 48.1 through 48.4 (CM 51-07) has continuously been ... . As the trigger level lacks any form of relationship with the actual stock condition this approach is ...
Meeting Document : SC-CAMLR-XXXVI/BG/20 : Auteur(s): Delegations of Norway, China and Chile
-
Joint research proposal for Dissostichus spp. in Subarea 88.3 by the Republic of Korea and New Zealand
abundance of Antarctic toothfish in Subarea 88.3 and the Scientific Committee has requested members complete ... structure of Antarctic toothfish in this subarea – and their relationship to the rest of the Pacific Sector ... coordinated research proposal for presentation at WG-FSA-17 (WG-SAM-17, para 4.89). This joint research ... previously been released on the slope, whilst also prospecting two of the northern seamount complexes and two ...
Meeting Document : WG-FSA-17/40 : Auteur(s): Delegations of the Republic of Korea and New Zealand
-
Pilot test of techniques to mitigate seabird interactions with catcher processor vessels in the Bering Sea pollock trawl fishery: final report
close as possible to the water at the stern with a snatch block, paired streamer lines and various ... buoy placed in the offal stream forward of the warps. Results showed that both the snatch block and ... trawl warps. Buoys were less effective and were difficult to position effectively. Formal testing of ... safe and practical deployment of the seabird interaction deterrents was proposed for 2005. Limited ...
Meeting Document : WG-FSA-05/37 : Auteur(s): E.F. Melvin, K.S. Dietrich and T. Thomas (USA)
-
DEVELOPMENT OF EFFECTIVE MITIGATION TO REDUCE SEABIRD MORTALITY IN THE ICEFISH (CHAMPSOCEPHALUS GUNNARI) TRAWL FISHERY IN SUBAREA 48.3
Subarea 48.3 became a concern in the late 1990s. At this time there was little knowledge on how to ... measures to reduce seabird bycatch levels. This resulted in the development and operational trialing of ... International) Title: DEVELOPMENT OF EFFECTIVE MITIGATION TO REDUCE SEABIRD MORTALITY IN THE ICEFISH ...
Meeting Document : WG-IMAF-09/15 : Auteur(s): B. Sullivan (BirdLife International), J. Clark (United Kingdom), K. Reid (Secretariat) and E. Reid (BirdLife International)
-
An exact time of release and recapture stock assessment model applied to Macquarie Island Patagonian toothfish (Dissostichus eleginoides)
Abstract: This paper presents an assessment of the harvested population of Patagonian toothfish ... at Macquarie Island based on data from a tag-recapture experiment initiated during the 1995/96 ... fishing season. Population models that include dynamics of tagged and un-tagged fish, daily releases ... , catches, recaptures, natural mortality, and annual net recruitment are used to assess the population of ...
Meeting Document : WG-FSA-00/43 : Auteur(s): G. Tuck, W. de la Mare, W. Hearn, R. Williams, A. Smith, X. He and A. Constable (Australia)
-
OCEANIC CIRCUMPOLAR HABITATS OF ANTARCTIC KRILL
Abstract: Surveys of Euphausia superba often target localised shelves and ice edges where their ... , with 70% of the total stock concentrated between 0o and 90oW. Within this Atlantic sector, krill are ... abundant over both shelf and ocean. At the Antarctic Peninsula, by contrast, they are found mainly over the ... inner shelf whereas in the Indian-Pacific sectors krill prevail in the ocean within 200-300 km of the ...
Meeting Document : WG-EMM-08/P04 - Abstract : Auteur(s): A. Atkinson, V. Siegel, E. A. Pakhomov, P. Rothery, V. Loeb, R.M. Ross, L.B. Quetin, K. Schmidt, P. Fretwell, E.J. Murphy, G.A. Tarling and A.H. Fleming
-
Fisheries risks to the population viability of black petrel (Procellaria parkinsoni)
Abstract: Data on the main population of black petrel (Procellaria parkinsoni), which breeds on ... Great Barrier Island, were analysed. Three types of data were available. The most useful was abundance ... data, from which it was possible to infer that the population was probably increasing at a rate between ... population. The mean age of first breeding for black petrel is estimated to be 6.7 y. Before this, new adults ...
Meeting Document : WG-SAM-10/P01 : Auteur(s): R.I.C.C. Francis and E.A. Bell (New Zealand)
-
Further development of a spatially explicit population dynamics operating model for Antarctic toothfish in the Ross Sea region
. Observations include spatially explicit commercial catch proportions-at-age, proportions mature and proportions ... spawning (based on GSI data), CPUE, and tag-release and tag-recapture observations. Estimates of parameters ... appeared to broadly reflect the hypothesised spatial distribution of Antarctic toothfish, suggesting that ... younger fish were found predominantly in southern areas of the Ross Sea shelf, mature fish on the slope ...
Meeting Document : WG-SAM-13/35 : Auteur(s): S. Mormede, A. Dunn, S. Parker and S. Hanchet (New Zealand)
-
Long-term change in zooplankton communities of the Southern Ocean between 1997 and 2018: implications for fisheries and ecosystems
Abstract: We provide an analysis of zooplankton distributions in the circumpolar Southern Ocean ... productivity, sea-surface temperature (SST), mixed layer depth, sea ice and the spatial gradient of SST (as an ... indicator of ocean fronts). Boosted Regression Tree models were used to investigate relationships between ... the abundances of key groups of zooplankton, occurrence of characteristic zooplankton communities, and ...
Meeting Document : WG-EMM-2019/66 : Auteur(s): M.H. Pinkerton, M. Decima, J. Kitchener, K. Takahashi, K. Robinson, R. Stewart and G.W. Hosie
-
LIFE HISTORY BUFFERING IN ANTARCTIC MAMMALS AND BIRDS AGAINST CHANGING PATTERNS OF CLIMATE AND ENVIRONMENTAL VARIATION
Abstract: The consequences of warming for Antarctic long-lived organisms depend on their ability ... to survive changing patterns of climate and environmental variation. Among birds and mammals of ... and Weddell seals, we found strong support for selection of life history traits that reduce ... survival of adults and in their propensity to breed annually, which are the vital rates that influence most ...
Meeting Document : WG-EMM-08/P05 : Auteur(s): J. Forcada, P.N. Trathan and E.J. Murphy