Search results
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Southern right whale (Eubalaena australis) reproductive success is influenced by krill (Euphausia superba) density and climate
Abstract: The reproductive success of southern right whale (Eubalaena australis) depends on body ... change in the abundance of the species main prey, krill (Euphausia superba), on the feeding grounds ... . Annual data on southern right whale number of calves were obtained from aerial surveys carried out ... number of calves recorded each year varied from 7 to 43 (x = 21.11 ± 11.88). Using cross-correlation ...
Meeting Document : WG-EMM-16/P06 : Author(s): E. Seyboth, K.R. Groch, L. Dalla Rosa, K. Reid, P.A.C. Flores and E.R. Secchi
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Domain 1 Marine Protected Area Preliminary Proposal PART C: Biodiversity Analysis by MPA zones
Abstract: This document contributes to the planning process for the designation of a Domain 1 MPA ... in Doman 1; while some of them occupy very small areas – such as polynyas – others extend over larger ... change (SC-CAMLR-XXXVI/18). The MPA model achieved the targets for almost 90% of the conservation objects ... proposed MPA fulfils the level of protection the international community agreed on for Domain 1 ...
Meeting Document : SC-CAMLR-XXXVI/BG/21 : Author(s): Delegations of Argentina and Chile
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Update on the conservation status, distribution and priorities for albatrosses and petrels in the CCAMLR area
Abstract: Thirteen ACAP species (out of 31 currently listed) are currently showing overall ... population declines. The population trends of a large proportion of 16 ACAP species with significant ... thirds of the total is listed by the IUCN as threatened. The greatest threat to the ACAP species is ... RFMOs. Addressing the pervasive threat of fisheries bycatch for species as wide-ranging as albatrosses ...
Meeting Document : SC-CAMLR-XXXVII/BG/10 : Author(s): Submitted by the ACAP Secretariat
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Stable isotope analysis reveals trophic variation in adult Antarctic krill (Euphausia superba) around the Antarctic Peninsula from austral fall to early winter
ecosystem and an important link in the food web of the Antarctic ecosystem. The trophic information for this ... of both spatial and temporal variables. We investigated the size dependence and monthly and regional ... variation in δ 13 C and δ 15 N values of adult krill in the Antarctic Peninsula, in the austral fall (April ... to May) and the early winter (June). We aimed to examine the trophic variations of krill occurred ...
Meeting Document : WG-EMM-2019/P03 : Author(s): H.T. Zhang, G.P. Zhu, Q. Song, S.Q. Wang, Y. Yang and Q.Y. Yang
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Biological parameters for icefish (Chionobathyscus dewitti) in the Ross Sea, Antarctica
, diet, and age estimation. All of the icefish sampled were identified as Chionobathyscus dewitti, and ... February, but this was limited, probably due to the short temporal distribution of the data. Length-at ... -maturity and age-at-maturity ogives indicated that 50% of the fish sampled were mature at about 340–360 mm ... (TL) and about 3–4 years of age and that 95% were mature at about 370–400 mm (TL) and 6–8 years of age ...
Meeting Document : WG-FSA-07/25 : Author(s): C.P. Sutton, M.J. Manning, D.W. Stevens, P.M. Marriott (New Zealand)
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Conflict or co-existence? Foraging distribution and competition for prey between Adélie and chinstrap penguins
Orkney Islands during the breeding seasons of 2000 and 2001. Satellite tracking data from of 19 Adélie ... penguins and 24 chinstrap penguins were used to compare foraging distributions. In both years the diet of ... both species was exclusively Antarctic krill (Euphausia superba) of the same size range. In a year of ... low prey availability (2000), there was a statistically significant segregation of foraging areas ...
Meeting Document : WG-EMM-02/15 : Author(s): A.S. Lynnes, K. Reid, J.P. Croxall and P.N. Trathan (United Kingdom)
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Research plan for toothfish in Division 58.4.4a & b by Shinsei Maru No. 3 in 2013/14
Abstract: We made stock status assessments of Dissostichus eleginoides in SSRUs C and D in ... stating that the sensitivity run of the CASAL model should be made by using levels of IUU ranging from ... CASAL_base model includes estimated variability of YCS for the period from 1989 to 2005, and assumed that a ... quarter of observed IUU fishing in the division had occurred in SSRU C. High estimated stock levels were ...
Meeting Document : WG-SAM-13/21 : Author(s): Delegation of Japan
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Key considerations for planning a large-scale krill survey
Abstract: Article II of the Convention requires the Commission to maintain harvested populations ... needs reliable indicators of krill stock size at appropriate spatial scales. It is likely that future ... ) might also play a role in the future management of the krill fishery. Such surveys provide an indication ... of krill biomass at the larger scale which is robust to uncertainties about krill flux. Current ...
Meeting Document : WG-EMM-15/27 : Author(s): S. Hill, J. Watkins (United Kingdom), O.R. Godø (Norway), S. Kawaguchi (Australia), D. Kinzey, C. Reiss (USA), V. Siegel (Germany), P. Trathan (United Kingdom) and G. Watters (USA)
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Revised assessment models for Patagonian toothfish in research block 58.4.4b_1 (SSRU 58.4.4bC) for the years 1990–2014
Abstract: We presented five sensitive runs of single-sex age-structured CASAL models for stock ... status assessments of Dissostichus eleginoides in the research block 58.4.4b_1 in the last WG-SAM meeting ... included all observations. The Working Group, however, requested the further examination of the sensitivity ... consequences of different harvest levels for the time to recovery to the target level. We revised to retain tag ...
Meeting Document : WG-FSA-15/23 : Author(s): K. Taki (Japan), S. Mormede (New Zealand) and T. Ichii (Japan)
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Draft updated data collection plan for the Ross Sea toothfish fishery
Abstract: Data are collected for use in scientific research, the results of which are used to ... the goals the management wishes to achieve. The long-term goals of the Ross Sea fishery based on ... Article II of CCAMLR can be summarised as: the target fished population is above a level which ensures ... are maintained; and, prevention of changes or minimisation of the risk of changes in the marine ...
Meeting Document : WG-FSA-15/40 : Author(s): S.M. Hanchet, S.J. Parker and S. Mormede (New Zealand)