Resultados de la búsqueda

1. Entanglement in man-made debris of Antarctic fur seals at Bird Island, South Georgia

   as part of an ongoing study by the British Antarctic Survey. A minimum of 8 seals were sighted ... ). During the summer pup-rearing period a minimum of 30 entangled seals were reported, 26 (87%) of which had ... comparison to the same time period in 1988/89. Possible causes suggested for this observed reduction in ...

   Meeting Document : CCAMLR-X/BG/05 : Autor(es): Delegation of UK

2. 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)

3. Attribtuion of acoustic echoes to squid in the south Atlantic

   order to characterise an acoustic signature that may be used to identify this species of squid ... is an advantage for making a positive identification of echoes. An initial review of the echocharts ... ). Calibrations were carried out in a deep, sheltered inlet at South Georgia on two occasions in mid-January and ... area at a depth of 25 m for 12 hours and caught an estimated 2 300 M. hyadesi (Table 2). No other ... reproduced as Figure 2. Most of the haul (the first seven hours) was through an area notable for the ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 259–271 : Autor(es): Goss, C., P. Rodhouse, J.L. Watkins and A.S. Brierley

4. 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)

5. 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)

6. A quantified Bayesian Maximum Entropy estimate of Antarctic krill abundance across the Scotia Sea and in small-scale management units from the CCAMLR-2000 Survey

   area. Density values for the unsurveyed off-transect portions of the survey area were inferred, and ... thus values for total biomass across the survey area, and within individual small-scale management ... estimated due to the sparseness of data in these regions. The MaxEnt formalism allows an objective choice of ... the parameters of the estimation method, and hence an objective choice of the most probable ... certain SSMUs have been based on the density determined for nearby strata (Hewitt et al., 2004b ... density distribution maps generated by MaxEnt enable biomass values for the SSMUs to be inferred on a ... values on a two-dimensional grid can naturally be viewed as a pixellated image or picture. The problem ... data can be considered as an image in which krill densities are plotted on a rectangular grid, with ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 97–116 : Autor(es): Heywood, B.G., A.S. Brierley and S.F. Gull

7. Conservation Measure Conservation Measure 24-01 (2012)

   The Application of Conservation Measures to Scientific Research Limitations:  Except for waters ... adjacent to the Kerguelen and Crozet Islands Except for waters adjacent to the Prince Edward Islands ... force for each species taken unless the catch limit in an area 3 is set at zero. (b) In the event ... the opportunity for other Members to review and comment on its Research Plan. The plan shall be ... plan to the Scientific Committee for review. Based on the submitted Research Plan and any advice ... two scientific observers, one of whom shall be an observer appointed in accordance with the CCAMLR ...

   Conservation Measure : 24-01 (2012)

8. 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

9. 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

10. 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)

Páginas