Search results
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Stable isotope analysis of tissue samples to investigate trophic linkages of Antarctic toothfish (Dissostichus mawsoni) in the Ross and Amundsen Sea regions
Abstract: Stable isotopes of carbon and nitrogen (δ 15 N and δ 13 C) in Antarctic toothfish ... (Dissostichus mawsoni) muscle were measured to study the trophic connections of Antarctic toothfish in the Ross ... samples each of four by-catch species (grenadiers, icefish, moray cods and deep-sea cod) were also ... analysed, but only from the Ross Sea region. Appropriate corrections were made to account for the effect of ...
Meeting Document : WG-EMM-14/50 : Author(s): M.H. Pinkerton, S.J Bury, J.C.S. Brown, J. Forman and A. Kilimnik (New Zealand)
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A brief review of information relevant to the establishment of a Krill Research Zone within the proposed Ross Sea Region Marine Protected Area
Abstract: At the close of the Commission for the Conservation of Antarctic Marine Living ... Region Marine Protected Area (RSRMPA) that included the addition of a Krill Research Zone (KRZ). A ... central aim of the proposed KRZ is to enhance research opportunities within the RSRMPA. To provide a ... , focusing primarily on krill and krill-dependent predators. Here we provide a summary of that review, which ...
Meeting Document : WG-EMM-16/49 : Author(s): E.S. Klein and G.M. Watters
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ANNUAL CHANGES IN SPECIES COMPOSITION AND ABUNDANCE OF BY-CATCH FISH COLLECTED BY JAPANESE KRILL SCIENTIFIC OBSERVERS IN THE NORTH OF SOUTH GEORGIA (CCAMLR SUBAREA 48.3), DURING AUSTRAL WINTER FROM 2002 TO 2008
Abstract: Species composition and abundance of by-catch fish were analyzed using the fish by ... north of South Georgia during the austral winter from 2002 to 2008. A total of 19 species belonging to 8 ... most abundant. Different life stages of K. anderssoni, Gymnoscopelus nicholsi, C. gunnari and L ... around South Georgia. The length frequency distribution of C. gunnari varied with years and may indicate ...
Meeting Document : WG-EMM-11/40 : Author(s): T. Iwami, K. Taki and M. Kiyota (Japan)
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DISCRIMINATION OF ENVIRONMENTAL VARIABLES THAT INFLUENCE THE CATCH PER UNIT EFFORT: THE CASE OF THE ANTARCTIC KRILL FISHERY
Abstract: The use of the catch per unit effort (CPUE) as an index of abundance usually requires a ... standardization process consisting of isolating all those exogenous factors from temporal variations in abundance ... vessel efficiency, variations in fishing strategies, and environmental fluctuations. The selection of the ... latter has been considered to be one of the most difficult, arbitrary, and poorly documented stages since ...
Meeting Document : WG-EMM-11/P3 : Author(s): J.C. Quiroz, R. Wiff, M.A. Barrientos and F. Contreras
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A history of the exploitation of the Ross Sea, Antarctica
Abstract: Recent analyses of anthropogenic impacts to marine systems have shown the Ross Sea to ... be the least affected stretch of ocean on Earth, although historical effects were not included in the ... study. Herein the literature is reviewed to quantify the extent of extraction of biological resources ... from the Ross Sea continental shelf and slope beginning at the start of the 20th century; none preceded ...
Meeting Document : WG-EMM-09/P03 : Author(s): D.G. Ainley
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UPDATED PRELIMINARY RESULTS OF AN ECOLOGICAL RISK ASSESSMENT FOR SEABIRDS AND MARINE MAMMALS WITH RISK OF FISHERIES INTERACTIONS
Abstract: We examined a methodology for assessing potential risk of interactions between ... fisheries and species of special interest (seabirds and marine mammals) by applying a Productivity ... -Susceptibility Analysis to a data set of species distribution, biological information and fishing effort. This ... type of Level Two Ecological Risk Assessment (ERA) has been used across fishery management regimes to ...
Meeting Document : WG-FSA-08/51 : Author(s): S. Waugh, D. Filippi, N. Walker (New Zealand) and D.S. Kirby
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Analysis of krill fishery operations in Subarea 48.1: spatial-time distribution of CPUE and fishing efforts
values of standardized CPUE indices in the Subarea 48.1 for the last 25 years. We continue to investigate ... krill fishery data for understanding reasons of this ‘high CPUE’ regime. The authors present the ... analysis of spatial- temporal variability of krill fishery based on CPUE trends, trawling duration, catch ... the changes in fishing methods but is result of the influence of changing environment. Impact of ...
Meeting Document : WG-EMM-14/21 : Author(s): S. Kasatkina and P. Gasyukov (Russia)
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The reliability of VHF telemetry data for measuring attendance patterns of marine predators: a comparison with Time Depth Recorder data
patterns of otariid seals. These data have been used in a wide variety of ways, from characterizing the ... reproductive and foraging ecology of these species to inferring ecosystem changes based on variation in ... attendance patterns. Yet the accuracy of VHF data has never been appropriately evaluated. Our study compares ... -collected Time-and-Depth Recorder (TDR) data used as the ‘true’ measurement of time spent onshore. Within ...
Meeting Document : WG-EMM-15/P05 : Author(s): A.D. Lowther, H. Ahonen, G. Hofmeyr, W.C. Oosthuizen, P.J. Nico De Bruyn, C. Lydersen and K. Kovacs
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Spatio–temporal dynamics of Antarctic krill fishery: identification of fishing hotspots
of the greatest fishery in Antarctic waters. Management of the fishery is based on a precautionary ... and temporal pattern of the fishery is only described in meso to macro scales (>>10 4 km 2 ... ). Here we present a novel analysis to identified fishing grounds, using statistical analysis of hotspots ... , in this case, fishing hotspots (FH), combined with a temporal analysis to assess persistence of these ...
Meeting Document : WG-EMM-16/52 : Author(s): F. Santa Cruz, B. Ernst and J.A. Arata
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On observations of ectoparasites of icefish Champsocephalus gunnari in Subarea 48.3 in March 1999
fishery for Champsocephalus gunnari in CCAMLR subarea 48.3. During the processing of catches taken in the ... area of the northwestern slope, two species of parasites were revealed: copepod Eubrachiella antarctica ... and leech Trulliobdella capitis Brinkman, 1948. Statistical data collected during examination of more ... than 3.000 specimens of icefish has shown that the average infestation of fish with copepods ...
Meeting Document : WG-FSA-99/58 : Author(s): V.L. Senioukov (Russia)