Resultados de la búsqueda
-
Preliminary tag-recapture based population assessment of Antarctic toothfish (Dissostichus mawsoni) in Subarea 48.4
Abstract: The biomass of Antarctic toothfish (D. mawsoni) in CCAMLR subarea 48.4 is estimated ... as a separate stock. Based on the biological characteristics of the catches in Subarea 48.4, and the ... 1187 tonnes. Applying the CCAMLR agreed precautionary assumption of average biomass across the time ... series and harvest rate of γ = 0.038, implies a 2019/20 yield of 45 tonnes using the 5-year average ...
Meeting Document : WG-FSA-2019/27 : Autor(es): T. Earl and A. Riley
-
An integrated stock assessment of Patagonian toothfish (Dissostichus eleginoides) in CCAMLR Subarea 48.4
Abstract: This paper describes an update to the CASAL assessment of Patagonian toothfish (D ... . eleginoides) in Subarea 48.4. The assessment data time series are updated with the observations for the 2014 ... /15 season and several minor changes to the assessment are made: revision of tagging and recapture ... retardation period. Stock projections indicate that the stock is in healthy condition and that an annual yield ...
Meeting Document : WG-FSA-15/28 : Autor(es): M. Soeffker, V. Laptikhovsky, T. Earl and C. Darby (United Kingdom)
-
Seasonal and interannual variation in foraging range and habitat of macaroni penguins Eudyptes chrysolophus at South Georgia
Abstract: In marine ecosystems, characterisation of the foraging areas and habitats of predators ... is a key factor in interpreting their ecological role. We studied the foraging areas of the macaroni ... differences in some parameters varied between years. The bearings of chick-rearing foraging trips were non ... bearings of foraging trips was high. Travel speeds were slower during foraging trips in the chick-rearing ...
Meeting Document : WG-EMM-02/21 Text : Autor(es): K.E. Barlow and J.P. Croxall (United Kingdom)
-
Trade data analysis – A report of trends and supply chains in CDS data
Abstract: Analysis of the trends and supply chains in the CDS data for 2016 and 2017 has ... identified increased use of the CDS with increases in the number of DCDs (41%), DEDs (35%) and DREDs (193 ... States of America (USA) in both years followed by Viet Nam. Analysis of supply chains within the CDS ... %) between these years. Across both years Chile had the greatest number of DCDs landings, exports and the ...
Meeting Document : CCAMLR-XXXVII/BG/03 : Autor(es): CCAMLR Secretariat
-
Updated description of Patagonian toothfish (Dissostichus eleginoides) tagging and ageing programs in Division 58.5.2, 1997–2015
Abstract: In 2014, CCAMLR endorsed a TAC of 4410 t of Patagonian toothfish in Division 58.5.2 ... . This report describes the recent fishing and data collection activities in the fishery. The fleet has ... enhance the tagging program that was established in 1998, the fleet has increased tagging rate in this ... , considerably adding to information on the structure of the population. The ageing program at AAD has produced ...
Meeting Document : WG-FSA-15/55 : Autor(es): D.C. Welsford, B. Farmer, T.D. Lamb, C. Péron, E. Woodcock and P.E. Ziegler (Australia)
-
Environmental response of upper trophic level predators reveals a system change in an Antarctic marine ecosystem
increase in the frequency of years of low reproductive output. Changes in the population structure of krill ... . We suggest that the effects of underlying changes in the system on krill population structure has ... close to the limit of krill availability. Understanding how krill demography is affected by changes in ... performance and survival is one of the keys to predicting future change in Antarctic marine ecosystems. Author ...
Meeting Document : WG-EMM-01/21 : Autor(es): K. Reid and J.P. Croxall (United Kingdom)
-
Development of a vessel safety checklist and debriefing protocol for use in SISO
Abstract: In accordance with the recommendations of the 2013 Panel Review of the CCAMLR Scheme of ... of SISO recommends the performance of a vessel safety check (see proposed Annex II in CCAMLR-XXXVI/25 ... approved by the Commission (proposed A(e bis) in CCAMLR-XXXVI/25). This paper provides examples of vessel ... ) prior to observer deployment, as well as the use of a form and protocol for debriefing observers to be ...
Meeting Document : CCAMLR-XXXVI/BG/16 : Autor(es): Delegation of the USA
-
Preliminary stock assessment of Rajiformes in statistical Subarea 48.3
simple Petersen model estimation of the population trends. The bycaught Rajiformes in subarea 48.3 are ... CCAMLR longline fisheries. However, they form a major part of the bycatch and as such it is necessary to ... understand the effect of each fishery on the Rajiformes population. Here we describe biological information ... gained from the skate tag-release programme in statistical subarea 48.3 and use the tag recaptures for a ...
Meeting Document : WG-FSA-14/48 : Autor(es): M. Soeffker, V. Laptikhovsky, J. Ellis and C. Darby (United Kingdom)
-
Characteristics of krill aggregations in 48.4 subdivision during January–February 2000
characteristics of some 2400 krill swarms detected and sized acoustically in the study area have been described ... been made an analysis of krill biomass horizontal and vertical distributions in the study area in ... . Major krill biomass (of about 64%) was concentrated in krill swarms within the meander and eddies zones ... of the Weddell Sea (14% of study area), being observed in upper 80 m depth level. There has been made ...
Meeting Document : WG-EMM-01/42 : Autor(es): S.M. Kasatkina, A.P. Malyshko, V.N.Shnar and O.A. Berezhinskiy (Russia)
-
A REVIEW OF BIAS AND UNCERTAINTY IN ANTARCTIC PACK-ICE SEAL ABUNDANCE ESTIMATES
of pack-ice seals focuses primarily on abundance and to a lesser extent trends in abundance. The ... present day. The review of abundance surveys is presented chronologically, and in doing so tries to ... Abstract: While the joint CCAMLR-IWC workshop will consider a number of parameters for species ... review addresses population surveys and abundance estimates for the four species of phocid seal commonly ...
Meeting Document : CCAMLR-IWC-WS-08/06 : Autor(es): Steinhage, D., Bengtson, J., Blix, A.S., Bester, M., Boveng, P., Laake, J., Cameron, M., Nordøy, E., Forcada, J., Stewart, B., Southwell, C., Trathan, P., Rogers, T., Plotz, J., Bornemann, H.