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Timing of clutch initiation in Pygoscelis penguins on the Antarctic Peninsula: towards an improved understanding of off-peak census correction factors
Paper Title: Timing of clutch initiation in Pygoscelis penguins on the Antarctic Peninsula ... factor related to the timing of clutch initiation in all three of the penguin species examined (Adélie ... being conducted at the peak of egg laying. Additionally, the historical literature includes many census ... timed relative to the peak of egg laying, and (ii) how nest numbers change through the breeding cycle ... laying is the mean (and in practice more usefully, the median) date of clutch initiation. CEMP Standard ... mean October temperatures were significant, it explained between 51% and 78% of the variance in mean ... information regarding breeding synchrony. In the third and final stage of the model, the mean CID for a ... the study sites), Oct.meanj,t is the mean October temperature of site j in year t, and yeart is ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 149–165 : Autor(es): Lynch, H.J., W.F. Fagan, R. Naveen, S.G. Trivelpiece and W.Z. Trivelpiece
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A preliminary assessment of age and growth of Antarctic silverfish (Pleuragramma antarcticum) in the Ross Sea, Antarctica
antarcticum) in the Ross Sea, Antarctica Abstract / Description: Antarctic silverfish (Pleuragramma ... antarcticum) were sampled during a trawl survey in the Ross Sea, Antarctica. Biological data, including fish ... . Standard length and weight were well correlated (r 2 = 0.99). Counts of growth zones in 304 thin-sectioned ... than males, but none of the estimated von Bertalanffy parameters were statistically significantly ... ) and more than 90% of the pelagic fish biomass and 98% of the fish larvae by number in the Ross Sea ... significant component in the diets of marine mammals and birds (Takahashi and Nemoto, 1984; Eastman, 1985 ... (PLEURAGRAMMA ANTARCTICUM) IN THE ROSS SEA, ANTARCTICA C.P. Sutton* National Institute of Water and ... (1986) studied lengthfrequency distributions of silverfish from off the Antarctic Peninsula in ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 75–86 : Autor(es): Sutton, C.P. and P.L. Horn
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A preliminary investigation of the possible effects of rhizocephalan parasitism on the management of the crab fishery around South Georgia
levels of infection by a rhizocephalan barnacle have been found in the population of the crab Paralomis ... to declines in spawning stock. The effects of harvesting both healthy and infected animals are ... stock. Results highlight the importance of incorporating parasitism in the design of a management ... Paper Title: A preliminary investigation of the possible effects of rhizocephalan parasitism on ... Relatively high levels of infection by a rhizocephalan barnacle have been found in the population of the ... : (i) resilience; and (ii) sensitivity to declines in spawning stock. The effects of harvesting both ... population is sensitive to declines in spawning stock. Results highlight the importance of incorporating ... parasitism in the design of a management strategy for this crab population. The main data requirements for ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 175–192 : Autor(es): Basson, M
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A review of the diet and at-sea distribution of penguins breeding within the CAMLR Convention Area (submitted to the 2008 Joint CCAMLR-IWC Workshop)
. These models require information on the number of predators in a population, their nutritional demands ... published information on the diet and at-sea distribution of the six penguin species that breed in the CAMLR ... Paper Title: A review of the diet and at-sea distribution of penguins breeding within the CAMLR ... in an ecologically sensitive manner demands that catches do not depress stocks within the foraging ... produce estimates of total prey consumption require data on the number of indi- viduals in a population ... ) where three of the focal penguin species breed, is included in order to ensure that the review is ... source. In the case of the review of diet, studies that only present data on composition within a ... information on the number of predators in a population, their nutritional demands, their diet composition and ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 75–114 : Autor(es): Ratcliffe, N. and P. Trathan
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The sensitivity of multiple output statistics to input parameters in a krill–predator–fishery ecosystem dynamics model
Paper Title: The sensitivity of multiple output statistics to input parameters in a krill ... within CCAMLR to evaluate options for managing the Antarctic krill fishery in the Scotia Sea and southern ... Drake Passage. The model analysed here required 2 311 input values for each of four scenarios and ... the status of predator groups more than they affected statistics indicating the status of the target ... numbers from the Convention on the Conservation of Antarctic Marine Living Resources in brackets. Each ... 2000 and w is the mean mass of an individual krill. Table 3: Parameters included in the sensitivity ... sensitivity of predator reproduction to variations in krill abundance. The alternative scenarios were an ... , conventional model evaluation also includes analysis of the model’s sensitivity to uncertainties in inputs ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 97–118 : Autor(es): Hill, S.L. and J. Matthews
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Effect of line sink rate on albatross mortality in the Patagonian toothfish longline fishery
Paper Title: Effect of line sink rate on albatross mortality in the Patagonian toothfish longline ... vessels to derive a sink rate and line-weighting regime that would minimise the capture of albatrosses ... /s should greatly reduce the incidental take of albatrosses. For autoline vessels with gear and line ... based on knowledge of line sink rates and albatross diving abilities. Sink rates of lines deployed into ... equivalent, roughly, of the hook setting rate of both the CFL Pioneer and In Sung 66) the conservation ... toll on seabirds, with annual estimates in some fisheries being in the order of tens-of-thousands of ... results of experiments are to be meaningful. This is particularly so in the case of experiments aimed at ... other seabird species; and (ii) to determine the longline sink rate of the In Sung 66, a vessel with ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 133–150 : Autor(es): Robertson, G.G
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Foraging behaviour and reproductive success in chinstrap penguins: the effects of transmitter attachment
Paper Title: Foraging behaviour and reproductive success in chinstrap penguins: the effects of ... Conservation of the Antarctic Marine Living Resources) Ecosystem Monitoring Program (CEMP). This paper reports ... and the group with only one member equipped with a transmitter. Several of the differences in those ... transmitter attachment Abstract / Description: The use of radio telemetry has been accepted as a standard ... in penguins by the CCAMLR (Commission for the Conservation of Antarctic Marine Living Resources ... : AND THE REPRODUCTIVE EFFECTS OF WG-CEMP-91/33 SUCCESS IN TRANSMITTER D.A. CroU, IL ... (Commission for the Conservation of the Antarctic Marine Living Resources) Ecosystem Monitoring Program (CEMP ... in foraging patterns of penguins unencumbered by transmitters within the brood period. This study ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 291–303 : Autor(es): Croll, D.A., J.L. Bengtson, P.L. Boveng, M.E. Goebel and J.K. Jansen
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Biomass, abundance and distribution of fish in the Kerguelen Islands EEZ (CCAMLR Statistical Division 58.5.1)
the management and conservation of fish populations in the area. File: 01duhamel-hautecoeur.pdf ... Paper Title: Biomass, abundance and distribution of fish in the Kerguelen Islands EEZ (CCAMLR ... conducted from September to October 2006 in the northern part of the Kerguelen Plateau (CCAMLR Statistical ... distribution of species, commercial or not, that are important in the ecosystem and are of major interest for ... the management and conservation of fish populations in the area. Résumé Une campagne d'évaluation ... , ABUNDANCE AND DISTRIBUTION OF FISH IN THE KERGUELEN ISLANDS EEZ (CCAMLR STATISTICAL DIVISION 58.5.1) G ... in the northern part of the Kerguelen Plateau (CCAMLR Statistical Division 58.5.1). The swept-area ... method was used in the depth range from 100 to 1 000 m with 207 random stratified stations. Estimates of ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 1–32 : Autor(es): Duhamel, G. and M. Hautecoeur
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Revised estimates of seabed areas within the 500 m isobath of the South Orkney Islands (subarea 48.2) and consequences for standing stock biomass estimates of nine species of finfish
Paper Title: Revised estimates of seabed areas within the 500 m isobath of the South Orkney ... Abstract / Description: A revised bathymetric map of the South Orkney Islands (Subarea 48.2) was generated ... , areas of seabed within the 500 m isobath (i.e. 0-500 m) were computed for 50 m depth intervals. Areas ... results were compared to the previously reported estimates of Everson (1987) for the 50-150, 150-250 and ... average slope of the seafloor, computed using mean polygon angles, is greatest in the shallowest and ... estimates are a product of the strata area squared, where Hence, errors or bias in computation of seabed ... kilometres or nautical miles. In this paper, revised areas of seabed around the South Orkney Islands are ... Antarctic Marine Living Resources (AMLR) Program bottom trawl survey of the South Orkney Islands in 1999 ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 197–204 : Autor(es): C.D. Jones
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Distribution of krill (Euphausia superba Dana) catches in the South Shetlands and South Orkneys
Paper Title: Distribution of krill (Euphausia superba Dana) catches in the South Shetlands and ... distribution in Subarea 48.2, probably as a result of more variable hydrographic conditions. About 50% of the ... catch in Subarea 48.1 from December to March was taken within 40 km of the coast, and 90% within 80 km ... in all years 1988 to 1991. In 1987, 1988 and 1991, 75% of the catch in Subarea 48.2 between December ... (Edwards and Heap, 1981). In this light the Convention on the Conservation of Antarctic Marine Living ... DANA) CATCHES IN THE SOUTH SHETLANDS AND SOUTH ORKNEYS DJ. Agnew* Abstract A set of concentric ... of more variable hydrographic conditions. About 50% of the catch in Subarea 48.1 from December to ... March was taken within 40 km of the coast, and 90% within 80 km in all years 1988 to 1991. In 1987 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 287–303 : Autor(es): Agnew, D.J.