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A drone-based Antarctic fur seal (Arctocephalus gazella) census of the St. Telmo Islands, South Shetland Archipelago
population dynamics in the South Shetland archipelago are largely driven by two breeding colonies, Cape ... the 1990’s, logistical challenges have prevented surveys of the St Telmo Islands since 2008. Over the ... Telmo Islands during the 2018-19 field season. The APH-28 provided a minimally-invasive, robust, and ... 333, which represents a 79% reduction since the most recent survey in 2008, and a 90% reduction from ...
Meeting Document : WG-EMM-2019/65 : Автор(ы): D.J. Krause and M.E. Goebel
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An inter-laboratory comparison of ages estimated for Dissostichus eleginoides using otoliths
years or less of each other. Variation in estimates between readers did not increase markedly with age ... full age range, indicating differences in the criteria used to interpret the first few years of age ... otoliths by one reader from the Center for Quantitative Fisheries Ecology at Old Dominion University and ... one reader from the National Institute of Water and Atmospheric Research, without auxiliary ...
Meeting Document : WG-FSA-99/56 : Автор(ы): J. Ashford (United Kingdom) and P. Horn (New Zealand)
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BEACHED MARINE DEBRIS SURVEYS AND INCIDENCES OF SEABIRD/MARINE MAMMAL ENTANGLEMENTS AND HYDROCARBON SOILING AT BIRD ISLAND, SOUTH GEORGIA AND SIGNY ISLAND, SOUTH ORKNEYS, 2008-2009
nine gentoo penguins, eight king penguins, two Antarctic fur seals and one wandering albatross were ... survey period. Entanglements of 19 Antarctic fur seals (7 involving packaging bands), two giant petrels ... , one wandering albatross and one gentoo penguin (all involving fishing line and/or hooks) were observed ... at Bird Island, while one entangled fur seal was seen at Signy Island. In total, 147 items of marine ...
Meeting Document : WG-IMAF-09/09 : Автор(ы): C.M. Waluda (United Kingdom)
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A characterisation of the toothfish fishery in Subareas 88.1 and 88.2 from 1997/98 to 2005/06
-year experiment (SC-CAMLR-XXIV). One of the aims of the experiment was to simplify the administration ... nine years in Subarea 88.1 and for five years in Subarea 88.2 with a large amount of data collected on ... toothfish and the associated bycatch. All SSRUs in the two subareas except for 881D and 882C have now been ... . The management of the SSRUs within the two subareas was changed for the 2006 season as part of a 3 ...
Meeting Document : WG-FSA-06/29 : Автор(ы): S.M. Hanchet, M.L. Stevenson and A. Dunn (New Zealand)
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An assessment of the merits of length and weight measurements of Antarctic krill Euphausia superba
animal has little effect upon length-weight relationships. The use of categories of sex and maturity ... prediction. Surprisingly, the stage of the moult cycle of the animal has little effect upon length-weight ... Universitat Kiel, Dusternbrooker Weg 20, 2300 Kiel, Federal Republic of Germany. Les relations publiees des ... prediccion. Sorpendentemente, la etapa del ciclo de muda del animal tiene poco efecto sobre las ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 371-373 : Автор(ы): Morris D.J., J.L. Watkins, C. Ricketts, F. Buchholz, and J. Priddle
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BEACH DEBRIS SURVEY – MAIN BAY, BIRD ISLAND, SOUTH GEORGIA 2006/2007
years in which no fisheries related debris was observed, one nylon fishing line and one snood were found ... Island, South Georgia (covering the period 1 October 2006 to 30 September 2007) a total of 365 items were ... previous years: 73% during summer (265 items) and 27% during winter (100 items). After three consecutive ... total). Author(s): F. Le Bouard (UK) Title: BEACH DEBRIS SURVEY – MAIN BAY, BIRD ISLAND, SOUTH GEORGIA ...
Meeting Document : WG-FSA-08/24 : Автор(ы): F. Le Bouard (UK)
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e-sc-xxxvi-a06.pdf
... Cic is the compensated two-hour catch, ∑Ci is the sum of two-hour catches over one 24-hour period and ... their intention to fish for krill, and two vessels withdrew from the fishery in all areas and one ... drafted two data collection methods, one for observations during fishing operations, and one for ... encountered when monitoring two different continuous gear types are outlined and discussed. One system
application/pdf attached to:WG-EMM-17
Meeting Report : WG-EMM-17
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e-sc-xxxv-a05.pdf
... . A simulated population with parameters estimated from these data was projected 20 years into the ... present, there is no routine report to users of how the database has been changed from one year to ... 486_2–4. Research block 486_1 was fished in one year only and catches were dominated by D. eleginoides ... . Poor ice conditions meant that research block 486_5 was accessible in only one year in four. The
application/pdf attached to:WG-SAM-16
Meeting Report : WG-SAM-16
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An index of per capita recruitment
assumptions that: (i) post-recruit mortality does not vary over age or between years; (ii) 100% of age-l ... years, and when all age-l animals spawn. These conclusions are insensitive to changes in the shape of ... underestimate recruits per spawner by 30% if reasonable assumptions are made regarding the variability of ... spawners and recruits. PCR was also able to track cycles in recruits per spawner after a 20% random ... appearing as a large mode at 20 to 30 mm length and in subsequent years as progressively longer length ... . Antarctic krill, however, appear to spend one to two years in the juvenile and sub- adult stages and may ... with one year of mortality removed: In addition to compounding the results of two PCRy_l ... nocne ~ 0 6 a ~ n e ~ H ~ K H C ~ O ~ ~ ~ O B ~ B U I ~ M ~ C X Rnsr pacveTa s ~ a v e ~ ~ m R1 20 ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 179–196 : Автор(ы): Hewitt, R
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Indices of prey availability near the Seal Island CEMP site: 1990 to 1996
prey density, depth, distance from Seal Island, and persistence over time. Acoustic data from two AMLR ... surveys each year were subsampled to include the foraging range of predators breeding at Seal Island ... relative biomass of juvenile krill near Seal Island during the first survey of each year as compared to the ... biomass of post-spawning adults near Seal Island during the second survey of each year. It is hoped that ... Seal Island, and persistence over time. Acoustic data from two AMLR surveys each year were subsampled ... (Figures 3 and 4). Two surveys were selected for each year, details of which are listed in Table 1. For ... MATERIALS AND METHODS One of the long-range goals of the CCAMLR Ecosystem Monitoring Program (CEMP) is to ... and 1993) or hull-mounted at 5 m depth (1994 to 1996), were passed to a Indices of Prey ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 37–45 : Автор(ы): Hewitt, R.P., G. Watters and D.A. Demer
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