Resultados de la búsqueda
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Improving estimates of Adélie penguin breeding population size: developing factors to adjust one-off population counts for availability bias
presented for the collection and development of data to adjust counts of Adélie penguins made at any time in ... illustrated using data collected at the Béchervaise Island CEMP site in 2007/08. Estimates of the breeding ... methods such as mark-recapture of individually tagged birds. Given the paucity of adjustment data in the ... literature, further collection of availability adjustment data across space and time is recommended. File ... count data: Adélie penguins as a case study. Document WG-EMM-04/54. CCAMLR, Hobart, Australia. Ensor ... methods are presented for the collection and development of data to adjust counts of Adélie penguins made ... method is illustrated using data collected at the Béchervaise Island CEMP site in 2007/08. Estimates of ... paucity of adjustment data in the literature, further collection of availability adjustment data across ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 229–241 : Autor(es): Southwell, C., J. McKinlay, L. Emmerson, R. Trebilco and K. Newbery
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Cycles of Euphausia superba recruitment evident in the diet of Pygoscelid penguins and net trawls in the South Shetland Islands, Antarctica
Abstract: Size and sex of Antarctic krill taken from chinstrap and gentoo penguin diet were ... evaluate penguin diet as a sampling mechanism and to look at trends in krill populations. Both penguin diet ... and net samples revealed a 4-5 year cycle in krill recruitment with one or two strong cohorts ... sustaining the population during each cycle. Penguin diet samples contained adult krill of similar lengths to ...
Meeting Document : WG-EMM-07/P2 : Autor(es): A. Miller and W. Trivelpiece (USA)
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Comparisons in prey distribution between inshore and offshore foraging areas of chinstrap penguins and Antarctic fur seals at Seal Island
the slope/offshore region was less abundant with krill and more remote from their breeding sites than ... advantages are considered for visual predators to feed in the slope/offshore region at night:(l) krill showed ... the inshore region so that krill may be easily found in the slope/offshore region; (2) krill tend to ... ; larger gravid female krill, which may be easily found and captured by predators, were available in the ...
Meeting Document : WG-EMM-96/49 : Autor(es): Ichii, T., Bengtson, J.L., Boveng, P., Cameron, M.F., Naganobu, M., Meyer, W.R., Hiruki, L.M., Takao, T., Jansen, J.K., Kawaguchi, S.
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e-cc-x-a5.pdf
... . The Committee had before it document CCAMLR-X/3 ‘Examination of the Audited Financial Statements for ... REVIEW OF BUDGET FOR 1991 6. The Administration/Finance Officer introduced document CCAMLR-X/4 ... . The Committee discussed document CCAMLR-X/8 ‘Commemorative Sculpture’. The document presented a ... 456 700 EXPENDITURE DATA MANAGEMENT 0 0 0 Capital Equipment 6 000 6 400 3 400 3 400 0 application/pdf attached to:scaf-91
Meeting Report : scaf-91
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Coastal weather drives foraging behaviour of chinstrap penguins, Pygoscelis antarctica
supports them. In the southwest Atlantic sector of the Southern Ocean, Antarctic krill (Euphausia superba ... the ecosystem in an adaptive framework for sustainably managing krill catch levels, performance ... indices of krill predators have been proposed as a proxy for krill abundance. However, there are several ... environmental variability and fishing pressure on krill availability at scales relevant to predators. In this ...
Meeting Document : WG-EMM-18/P14 : Autor(es): A.D. Lowther, P. Trathan, A. Tarroux, C. Lydersen and K.M. Kovacs
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Seabird by-catch update on industrial Patagonian toothfish fishery in southern Chile
Abstract: Implementation of NPOAs requires in first place an assessment of all longline fisheries ... determined the initiation of the NPOA to reduce seabird incidental mortality in all longline fisheries in ...
Meeting Document : WG-FSA-04/13 : Autor(es): J. Arata, C.A. Moreno and R. Hucke-Gaete (Chile)
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CCAMLR TAGGING PROGRAM
proportion of the tags that can now be linked to tagging events in exploratory fisheries (Table 1). The ... rate for tags recovered in established fisheries is also variable due to the partial inclusion in the ...
Meeting Document : WG-SAM-09/04 : Autor(es): Secretariat
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Design of the Italian acoustic survey in the Ross Sea for the Austral summer 2003/04
-2004. The research consists of three core activities: (1) Acoustic sampling on krill (E. superba and E ... . crystallorophias) populations and concurrent censuses of their top predators for estimating krill distribution and ... abundance, and the effects of predators on altering them; (2) Net sampling for describing krill demography ... masses which influence krill ecological behaviour. All these activities will be undertaken synoptically ...
Meeting Document : WG-EMM-02/31 : Autor(es): M. Azzali, A. Sala and S. Manoukian (Italy)
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Acoustic visualization of the three-dimensional prey field of foraging chinstrap penguins
Antarctic krill, a keystone prey species in the Southern Ocean food web. It has been difficult to evaluate ... these concerns because of problems associated with determining the availability of krill to their ... natural predators. Here, we report a novel method for assessing prey availability to an important krill ... -dimensional distribution of krill within a 1852 X 1852 X 100 m volume of ocean. Our study revealed the ...
Meeting Document : WG-Joint-94/12 : Autor(es): J.E. Zamon, C.H. Greene, E. Meir, D.A. Demer, R.P. Hewitt and S. Sexton (USA)
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Information on incidental mortality of seabirds and other protected species in the US West Coast pelagic longline fishery
fisheries, one does exist for a US-based pelagic longline fishery for tuna and swordfish. These vessels are ... standing request from CCAMLR for information on incidental seabird mortality in fisheries adjacent to the ...
Meeting Document : WG-FSA-03/39 : Autor(es): D. Petersen, L. Enriquez and S. Fougner (USA)