Resultados de la búsqueda
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The Ross Sea cephalopod community: insights from stable isotope analysis
Abstract: Based on mass balance modeling and mixed trophic impact analysis, cephalopods have been ... identified as having relatively high importance in the food-web of the Ross Sea. However, information on the ... identifications. Generally, squid clustered into two distinct isotopic groups, one with depleted isotope ... signatures typical of feeding on relatively low trophic level prey within the Ross Sea, and the second with ...
Meeting Document : WG-EMM-12/55 : Autor(es): D.R. Thompson, M.H. Pinkerton, D.W. Stevens (New Zealand), Y. Cherel (France), S.J. Bury (New Zealand)
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Seabird research at Cape Shirreff, Livingston Island, Antarctica, 2006/07
been declining for the past seven years and is at its lowest size in the 10 years of study. Chinstrap ... nine year means for these parameters at our study site. The chinstrap penguin breeding population has ... lowest population size in the 10 years of census data. The number of diet samples containing fish was the ... highest ever and comparable to the first six years of the study. Unlike 2005-06, 18% of the gentoo penguin ...
Meeting Document : WG-EMM-07/P1 : Autor(es): R. Orben, S. Chisholm, A. Miller and W.Z. Trivelpiece (USA)
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AGE AND GROWTH OF SPINY ICEFISH, CHAENODRACO WILSONI REGAN, 1914, OFF JOINVILLE-D'URVILLE ISLANDS (ANTARCTIC PENINSULA)
. Age at sexual maturity was estimated to be about 2 years for females and 2.5 years for males. Compared ... January 2007. A total of 218 specimens were selected for the study, consisting of 120 females and 98 males ... . The age of fish was estimated by counting annuli on transverse sections obtained by grinding and ... estimated age range was 1-5 for males and 1-4 for females of C. wilsoni. Applying the von Bertalanffy growth ...
Meeting Document : WG-FSA-08/33 : Autor(es): M. La Mesa, A. De Felice (Italy), C.D. Jones (USA) and K.-H. Kock (Germany)
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The Continuous Plankton Recorder in the Southern Ocean: a comparative analysis of zooplankton communities sampled by the CPR and vertical net hauls along 140°E
2001. NORPAC nets were deployed during a CTD transect on the southern leg, sampling four depth zones at ... each of 19 stations: 0–20, 20–50, 50–100 and 100–150 m. A Continuous Plankton Recorder (CPR) was ... deployed on the northern leg (average sampling depth = 10.5 m). Both net systems were harnessed with 270?m ... patterns. Species richness and diversity increased with depth, and were lowest for CPR samples. Conversely ...
Meeting Document : WS-BSO-07/P5 : Autor(es): Hunt, B.P.V and G. Hosie
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Fishery monitoring and closure procedures
Abstract: This document provides summary advice to the Commission on the Secretariat’s ... interpretation and application of procedures to monitor and forecast closures in CCAMLR fisheries in the 2018/19 ... Workflow Status: Content Approved Document Release Consent: Yes Delegation responsibility for releasing ...
Meeting Document : CCAMLR-38/BG/12 : Autor(es): CCAMLR Secretariat
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Mackerel icefish ecological indices
Abstract: Mackerel icefish have been harvested in the CCAMLR Region for over thirty years. In the ... Atlantic sector of the Southern Ocean they feed preferentially on krill and are themselves preyed upon by ... fur seals and several avian species. These attributes make them suitable for consideration within the ... : Standing Stock, Cohort Strength and Recruitment, Natural Mortality, Length at Age 1+ and 2+ years ...
Meeting Document : WG-EMM-03/42 : Autor(es): I. Everson (United Kingdom), K.-H. Kock (Germany) and A.W. North (United Kingdom)
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Trends in relative abundance of fjord Notothenia rossii, Gobionotothen gibberifrons and Notothenia coriiceps in trammel net catches at Potter Cove, South Shetland Islands
has continued in Potter Cove from 1991 to 1998, covering a continuous sampling period of 15 years and ... commercially fished Notothenia coriiceps, which was already reported for the period 1983-1990 in a previous ... study, is still evident. These results are supported by our knowledge on the diet of the piscivorous ... . The most likely explanation for the decrease in recruitment to the inshore sub-populations of N ...
Meeting Document : WG-FSA-98/57 : Autor(es): E. Barrera-Oro, E.R. Marschoff and R.J. Casaux (Argentina)
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IDENTIFYING TAXONOMIC GROUPS AS VULNERABLE TO BOTTOM LONGLINE FISHING GEAR IN THE ROSS SEA REGION
an interim list of taxa to monitor in fishery bycatch in the Ross Sea as part of its 2008 benthic ... fisheries impact assessment. The rationale for including or excluding each taxonomic group is described ... region, including two indicator-only taxa. Author(s): Bowden, D.A., Parker, S.J. Title: IDENTIFYING ...
Meeting Document : WS-VME-09/08 : Autor(es): Bowden, D.A., Parker, S.J.
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Observer coverage in CCAMLR krill fisheries from 2011 to 2015
discussion at the Commission for a number of years, as the krill fishery is the only CCAMLR fishery that does ... not require 100% observer coverage. The Secretariat analysed the level of observer coverage for the ... past five years comparing the number of days of fishing conducted by vessels in the krill fleet, with ... the number of days observers were present on vessels as this is a consistent metric that can be ...
Meeting Document : WG-EMM-16/11 : Autor(es): CCAMLR Secretariat
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Areal and seasonal extent of sea-ice cover off the northwestern side of the Antarctic Peninsula: 1979 through 1995
multiple years is apparent. Annual curves of sea ice cover were integrated over time to produce an annual ... years. The most recent event was first apparent in 1994 and continues through the latest data available ...
Meeting Document : WG-EMM-96/24 : Autor(es): Hewitt, R.P.