Search results
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Age distribution of breeding female Antarctic fur seals in relation to changes in population growth rate
in 1971-1973 was 7.41 (SE = 0.26) years and in 1988 it was 6.93 (SE = 0.20) years. After correction ... (SE = 0.26) years and in 1988 it was 6.93 (SE = 0.20) years. After correction for age-dependent ... for age-dependent arrival time at the pupping beach in 1988, the mean age was 6.22 (SE = 0.14 years ... -1972. Exponential models fitted to the frequency distribution of age-classes greater than age 5 years ...
Meeting Document : WG-CEMP-91/21 : Author(s): I.L. Boyd, N.J. Lunn, P. Rothery and J.P. Croxall (United Kingdom)
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Distribution and size–age composition of Antarctic krill (Euphausia superba) in the South Orkney Islands region (CCAMLR Subarea 48.2).
25–30 mm) and 2-year-old krill (age 2+; modal length 40–45 mm); the 3-, 4- and 5-year-old krill age ... 0 –10 –20 –30 29–30 31–32 33–34 35–36 37–38 39–40 41–42 43–44 45–46 47–48 49–50 51–52 53 ... % 70 % 60 % 50 % 40 % 30 % 20 % 10 % 0% 10 0% 90 % 80 % 70 % 60 % 50 % 40 % 30 % 20 % 10 ... % 0% 10 0% 90 % 80 % 70 % 60 % 50 % 40 % 30 % 20 % 10 % 0% 10 0% 90 % 80 % 70 % 60 % 50 % 40 ... Paper Title: Distribution and size–age composition of Antarctic krill (Euphausia superba) in the ... trawler FV Maxim Starostin in Subarea 48.2 between January and March in 2009 and 2010 are described. The ... distribution of size–age groups in association with particular water masses indicated that age 2+ krill ... dominated in cold Weddell Sea waters in the southern parts of the fishing area, while older age classes (3 ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 123–134 : Author(s): Sologub, D.O. and A.V. Remeslo
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Fishery Report 2015: Exploratory fishery for Dissostichus spp. in Division 58.4.2
to this report is shaded. Throughout this report the CCAMLR fishing season is represented by the year in which ... that season ended, e.g. 2015 represents the 2014/15 CCAMLR fishing season (from 1 December 2014 to 30 ... 1). Although a catch limit of 30 tonnes was set in SSRU 5842A, the Commission agreed that no fishing would ... , paragraph 3.68). Those years that include quarantined data are indicated with a superscript q and vessel ... Description / Abstract: Fishery Report 2015: Exploratory fishery for Dissostichus spp. in ...
Document : Site Section: Publications
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Foraging energetics of Antarctic fur seals in relation to changes in prey availability
of lactating female Antarctic fur seals, Arctocephalus gazella, foraging at sea was measured in two years using ... doubly labeled water at South Georgia Island. There was no difference between years in mass gain, water ... influx, mass-specific field metabolic rate (FMR), or absolute FMR. Mean at-sea FMR over both years ... -provisioning rate) appear to reflect prey availability. The similarity between years in mass increase suggests ...
Meeting Document : SC-CAMLR-VIII/BG/13 : Author(s): Delegation of United Kingdom
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Integrating Climate and Ecosystem Dynamics in the Southern Ocean (ICED) programme: a report on recent joint activities and links between ICED and CCAMLR
of interest to CCAMLR. The 2018 ICED Projections Workshop, undertaken in collaboration with CCAMLR, provided ... to CCAMLR. The 2018 ICED Projections Workshop, undertaken in collaboration with CCAMLR, provided an initial ...
Meeting Document : WG-EMM-2019/02 : Author(s): R.D. Cavanagh, N.M. Johnston and E.J. Murphy
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Exploring variability in the locations used by the krill fishery in Area 48 in relation to intra- and inter-annual variability in seasonal sea ice
in their behaviour, targeting fixed geographic locations in most years. In contrast, in Subarea 48.1, fishing ... locations show considerable variability between years. In Subarea 48.2 ice cover tends to increase rapidly ... 48.1 has shifted in recent years with most catch being taken south of the South Shetland Islands since ... 2008/09 in contrast to earlier years when the mean catch location was always to the north and west ...
Meeting Document : WG-EMM-14/11 : Author(s): J. Silk, S.L. Hill and P.N. Trathan (United Kingdom)
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Climate change and zooplankton dominance in the Antarctic marine ecosystem: implications for the food web
has been warming over the past 40 years with an associated decreased frequency of winters ... ) and population dynamics of salps (Salpa thompsoni). Strong krill recruitment success there follows years ... years suggests that the food web may be affected by climate change. The 1994/95 austral summer season ... followed the first prolonged winter sea-ice season in three years and provides a strong contrast ...
Meeting Document : WG-EMM-96/21 : Author(s): Siegel, V., Fraser, W., Trivelpiece, S., Holm-Hansen, O., Loeb, V., Hewitt, R., Trivelpiece, W.
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A simple approach for calculating the potential yield of krill from biomass survey results
-exploitation level over a 20 year period of harvesting should not exceed l0%. The value of λ depends strongly ... for the calculations is that the probability that the kri11 spawning biomass drops below 20% of its average pre ... is that the probability that the kri11 spawning biomass drops below 20% of its average pre-exploitation level over a 20 ... year period of harvesting should not exceed l0%. The value of λ depends strongly on the value ...
Meeting Document : WG-KRILL-91/24 : Author(s): D.S. Butterworth (South Africa) and M. Basson (United Kingdom)
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Conservation Measure Conservation Measure 41-01 (2002)
Bottom Right Bottom Right Latitude Longitude Latitude Longitude 48.6 A 50°S 20°W 60°S 30°E 48.6 ... °E 48.6 F 60°S 20°E coast 30°E 58.4.1 A 55°S 80°E 64°S 89°E 58.4.2 A 62°S 30°E coast 40 ... by 30 September 2003 so that the data will be available to the meeting of the Working Group on Fish ... for the consideration of WG-FSA. 9. Members who choose not to participate in the fishery prior to the commencement ... General measures for exploratory fisheries for Dissostichus spp. in the Convention Area in the ... Period in Force: 2002- 2003 ...
Conservation Measure : 41-01 (2002)
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Investigation of the sensitivity of the Ross Sea toothfish assessment to withholding subsets of the available data
on model outputs of withholding from a stock assessment between one and eight years of age frequency ... the effect of not updating an assessment every year, and also the evolution of stock assessments with time ... as more years’ data becomes available. The 2009 stock assessment of Antarctic toothfish in the Ross Sea ... withholding data was found to be highest in the earlier years of stock assessments, when each extra year ...
Meeting Document : WG-SAM-11/17 : Author(s): S. Mormede (New Zealand)