Resultados de la búsqueda
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Foraging energetics of Antarctic fur seals in relation to changes in prey availability
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 ... -provisioning rate) appear to reflect prey availability. The similarity between years in mass increase suggests ... account for the observed between-year difference in at-sea FMR of C. ursinus while foraging-trip duration ...
Meeting Document : SC-CAMLR-VIII/BG/13 : Autor(es): Delegation of United Kingdom
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Age distribution of breeding female Antarctic fur seals in relation to changes in population growth rate
1971-1973 was 7.41 (SE = 0.26) years and in 1988 it was 6.93 (SE = 0.20) years. After correction for ... age-dependent arrival time at the pupping beach in 1988, the mean age was 6.22 (SE = 0.14 years ... Georgia, in 1988 was compared with the age distribution of a sample obtained in 1971-1973. The mean age in ... ), which was significantly lower than in 1971-1973. Indicators of population size suggested that population ...
Meeting Document : WG-CEMP-91/21 : Autor(es): I.L. Boyd, N.J. Lunn, P. Rothery and J.P. Croxall (United Kingdom)
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Natural fluctuations in the abundance of krill with due regard to global climate changes in the southern hemisphere: forecasting possibilities
the South Ocean in recent years made it possible for scientists to establish a rather clear ... summer during such years of moderate winter in higher surface temperature. Salp occurred in mass ... constantly both in scientific and commercial fishing gear. Poor year-classes of krill and upsurges in the ... Abstract: The eco systematic studies in biology and hydrology conducted in the Atlantic sector of ...
Meeting Document : WG-EMM-98/52 : Autor(es): K. Shust (Russia)
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Temporal variability in Adélie penguin CEMP parameters and their response to changes in prey availability
guard stage and elevated during the crèche stage). The overall temporal variability across years in ... response parameters was much greater than was observed in the two years with concurrent krill abundance. If ... population parameters which are thought to be sensitive to changes in prey availability: breeding success ... , foraging trip duration, meal mass and fledgling weights. Some years had either good breeding success with ...
Meeting Document : WG-EMM-12/22 : Autor(es): L. Emmerson and C. Southwell (Australia)
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Temporal variability in Adélie penguin CEMP parameters and their response to changes in prey availability
guard stage and elevated during the crèche stage). The overall temporal variability across years in ... response parameters was much greater than was observed in the two years with concurrent krill abundance. If ... population parameters which are thought to be sensitive to changes in prey availability: breeding success ... , foraging trip duration, meal mass and fledgling weights. Some years had either good breeding success with ...
Meeting Document : WG-EMM-12/48 : Autor(es): L. Emmerson and C. Southwell (Australia)
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Revised research plan for toothfish in Division 58.4.4b by Shinsei maru No. 3 in 2015/16
Abstract: In this document, we revise stock status assessments of D. eleginoide s in research ... results of reanalysis using CASAL models in research block 58.4.4b_1 are described in a separated document ... . The estimated stock size in block 58.4.4b_1 was 510, 336 and 333 tonnes in CPUE analogy method ... , Petersen method and CASAL OB_1b model (vulnerable biomass in 2014), respectively. The stock sizes of D ...
Meeting Document : WG-FSA-15/20 : Autor(es): Delegation of Japan
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Using digital video monitoring systems in fisheries: applications for monitoring compliance of seabird avoidance devices and seabird mortality in Pacific halibut longline fisheries
) in the Pacific halibut longline fleet operating off the state of Alaska. The project was conducted on ... two of the IPHC stock assessment survey vessels fishing in Alaska during 2002. The objectives of the ... could be used to assist in compliance determination, an EMS system was installed on two halibut longline ... EMS was successful in detecting streamer line deployment and relative position on 100% of the daytime ...
Meeting Document : WG-FSA-04/24 : Autor(es): R.T. Ames, G.H. Williams and S.M. Fitzgerald (USA)
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CCAMLR’s role in combating IUU fishing in the Southern Ocean and globally
Abstract: Abstract The persistence of IUU fishing in the CCAMLR Area undermines the intrinsic ... priority for CCAMLR as an integral part of the Antarctic Treaty System. Thus far, in spite of the number of ... can take individually and collectively to eliminate IUU fishing in the CCAMLR Area. An important step ... in the development of global instruments to tackle this problem is the Agreement on Port State ...
Meeting Document : CCAMLR-XXIX/BG/20 : Autor(es): ASOC Observer
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Estimation of toothfish distribution and population size in Subarea 88.3 by results of research longline fishing in 2011–2012
Abstract: In 2011 and 2012 in Subarea 88.3 Russian longliners “Sparta” and ‘Chio Maru 3 ... set at a depth from 625 to 2336 m. Total number of set hooks amounted 171096. In 2011 research fishing ... covered SSRU B, C and D. In 2012 ice conditions were much worse and longlines were set only in SSRU C ... biology in this Subarea. (SC-CCAMLR-XXX/5, par. 2.26-2.29). Author(s): V.A. Tatarnikov, I.G. Istomin and ...
Meeting Document : WG-SAM-12/20 : Autor(es): V.A. Tatarnikov, I.G. Istomin and V.V. Akishin (Russia)
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Long-term changes in the size composition of fjord Notothenia rossii, Gobionotothen gibberifrons and Notothenia coriiceps at Potter Cove, after the 1978–1980 fishery in the area
1986/7 and the duration of the inshore phase of the species, which is known to last for 6-7 years. In ... Abstract: Fish samples collected through an overall period of 24 years at Potter Cove after the ... impact of the fishery in the area in 1978-80, allowed the comparison of the variations in mean annual ... the ecologically similar but unexploited N. coriiceps. The sharp decline in the abundance of N. rossii ...
Meeting Document : WG-FSA-07/52 : Autor(es): E.R. Marschoff, E.R. Barrera-Oro and N.S. Alescio (Argentina)