Résultats de la recherche
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Sea ice characterisation of the proposed Ross Sea region Marine Protected Area Special Research Zone
Research Zone (SRZ) along with three other General Protection Areas. This paper presents an analysis of sea ... ice within and surrounding the boundaries of the proposed SRZ over the past 16 years, the impact it ... January in 8 seasons, open later (mostly after the fishery closed) and never completely cleared in 4 ... still removed from the area in constraining ice years (2010 and 2013). The main influence of sea ice on ...
Meeting Document : SC-CAMLR-XXXIV/BG/31 : Auteur(s): S. Parker, S. Hoyle, S. Hanchet and R.J.C. Currey (New Zealand)
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A characterisation of the toothfish fishery in Subareas 88.1 and 88.2 from 1997–98 to 2013–14
12 years with a slight decline in the past two years. Length frequency distributions of Antarctic ... Abstract: This report summarises the timing, depth, and location of fishing together with the ... present in the 2014 season, and the size composition in 2014 was more similar to that in the early period ... . As in recent years, the remaining catches came mainly from SSRUs 88.1C, 88.1J, and 88.2H ...
Meeting Document : WG-FSA-14/52 : Auteur(s): M. Stevenson, S. Hanchet, S. Mormede and A. Dunn (New Zealand)
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Krill, salps and other dominant zooplankton taxa in the Elephant Island area during the 1997 austral summer
moderate krill abundance and lower recruitment success of the 1995/96 year class relative to that of 1994 ... /95. These occurred after a relatively early 1996 spawning season that theoretically should have ... larval survival and recruitment even when krill spawning is relatively early. Salp abundance values ... ", followed a winter with relatively low sea-ice development. The other zooplankton collected ...
Meeting Document : WG-EMM-97/33 : Auteur(s): Puglise, K., Outram, D., Loeb, V.
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Environmental variability and the behavioural dynamics of Antarctic fur seals in the South Atlantic
to link variability in predator performance with specific measurements of oceanographic variability ... climate variation. Fur seal foraging trip duration was transformed into a normally distributed index of ... combination with ENSO or sea ice indices. Lagged cross-correlations showed that the ENSO and sea ice indices ... had strong effects when lagged by one year. This was supported by bivariate correlation between the ...
Meeting Document : WS-AREA 48-98/16 : Auteur(s): I.L. Boyd (UK)
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Variation in reproductive performance of seabirds and seals at South Georgia, 1976–1986 and its implications for southern ocean monitoring studies
success, foraging trip duration and offspring growth rate. 1977-78 and 1983-84 were summers of ... Island are not synchronised with those at South Georgia. They correlate best (and especially for ... Chinstraps, which suffered badly in 1980-81 and 1982-83) with the date of ice break-out in late spring ... . Detailed comparisons between normal and abnormal years are made of a range of parameters of albatross ...
Meeting Document : SC-CAMLR-VI/BG/15 : Auteur(s): J.P. Croxall, T.S. McCann, P.A. Prince and P. Rothery (United Kingdom)
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Variation or reproductive performance of seabirds and seals at South Georgia, 1976–1986 and its implication for Southern Ocean monitoring studies
success, foraging trip duration and offspring growth rate. 1977-78 and 1983-84 were summers of ... Island are not synchronised with those at South Georgia. They correlate best (and especially for ... Chinstraps, which suffered badly in 1980-81 and 1982-83) with the date of ice break-out in late spring ... . Detailed comparisons between normal and abnormal years are made 'of a range of parameters of albatross ...
Meeting Document : WG-CEMP-87/13 : Auteur(s): J.P. Croxall, T.S. McCann, P.A. Prince and P. Rothery (United Kingdom)
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Effects of different harvesting strategies on the stock of Antarctic icefish Champsocephalus gunnari around South Georgia
years after a good recruitment,- pulse fishing at an interval of 3 years with no fishing in between;- a ... fishing mortality (F0.1, Fmax, 2xFmax),- harvesting contantly at 50%F0.1 with an increase of F 3 or 6 ... of the incoming year class. An increaseof F, however, should not occur before 4 years after a good ... Champsocephalus gunnari have been simulated for a period of 30 years. These were- diffierent levels of constant ...
Meeting Document : SC-CAMLR-VIII/BG/47 : Auteur(s): Delegation of Federal Republic of Germany
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Estimates of abundance of Dissostichus eleginoides and Champsocephalus gunnari from the random stratified trawl survey in the waters surrounding Heard Island in Division 58.5.2 for 2019
year. Catches of skates were similar to those of the last three years, which have been higher than ... Abstract: During late March to early April 2019, the annual random stratified trawl survey (RSTS ... ) around Heard Island and McDonald Islands (HIMI) was conducted in CCAMLR Division 58.5.2, with the ... design and the duration of the hauls were similar to recent surveys, but with a new set of randomly ...
Meeting Document : WG-FSA-2019/03 : Auteur(s): G.B. Nowara, T.D. Lamb and P. Ziegler
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Hook loss in CCAMLR exploratory fisheries
hook loss data was provided by 21 of the 34 vessel/fishery reports with an estimated 317920 hooks lost ... Abstract: The development of methods to estimate unaccounted fishing mortality from lost fishing ... lines requires an estimate of the number of lost hooks that are attached to sections of line. In 2011 ... attached to sections of lines. In 2012 15 of the 26 vessel/fishery reports provided non-zero data with an ...
Meeting Document : WG-FSA-12/65 : Auteur(s): Secretariat
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Changes in the foraging range of Adélie penguins as the breeding season progresses
season of Adélie penguins nesting at Béchervaise Island on the Mawson coast of Eastern Antarctica. A ... with the changing requirements of adults and chicks. However, increases in range as the chick rearing ... period progresses are also consistent with prey depletion and intraspecific competition. 5. Projection of ... consistently used as access to the sea during incubation. 3. Kernel analyses showed that penguins foraged most ...
Meeting Document : WG-EMM-04/57 : Auteur(s): J. Clarke and L. Emmerson (Australia)