Resultados de la búsqueda
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Management plan for Site of Special Scientific Interest (SSSI) No. 1
; • allow visits for management purposes in support of the aims of the management plan. Author(s ... Abstract: Management at Cape Royds aims to: • avoid degradation of, or substantial risk to, the ... values of the Area by preventing unnecessary human disturbance to the Area; • allow scientific research ... on the ecosystem, and in particular on the avifauna in the Area, while ensuring protection from over ...
Meeting Document : WG-EMM-02/59 : Autor(es): Secretariat
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Proposed updates to CEMP data e-forms and a review of CEMP Standard Methods
age of this document and that the last review of the manual was completed in 2004, the Secretariat ... proposes a review of the manual intersessionally by the CEMP e-group in order to ensure that it is meeting ... the method descriptions for these parameters in the CEMP Standard Methods manual. However, given the ... Abstract: Updates to the CEMP data submission e-forms for parameters A3 and A8 have been proposed ...
Meeting Document : WG-EMM-18/46 : Autor(es): CCAMLR Secretariat
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A comparison of Antarctic krill (Euphausia superba Dana) caught by nets and taken by macaroni penguins (Eudyptes chrysolophus Brandt): evidence for selection?
distributions that were statistically different from the original distribution of krill caught in nets on 76 out ... proportions. The differences in size and maturity of krill taken by penguins are discussed in terms of ... , we examined the potential selection of different length and maturity stages of Antarctic krill ... probability of obtaining length-frequency distributions of krill different from that obtained from the net ...
Meeting Document : WG-EMM-96/08 : Autor(es): Croxall, J.P., Hill, H.J., Trathan, P.N., Watkins, J.L.
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A small unmanned aerial system for estimating abundance and size of Antarctic predators
studies, but can be difficult in remote settings such as Antarctica. Recent advances in the development of ... Abstract: Quantifying the distribution and abundance of predators is integral to many ecological ... new tool for studying the distribution and abundance of predator populations. We detail our experience ... from the first use of VTOLs for estimating abundance, colony area, and density of krilldependent ...
Meeting Document : WG-EMM-15/P06 : Autor(es): M.E. Goebel, W.L. Perryman, J.T. Hinke, D.J. Krause, N.A. Hann, S. Gardner and D.J. LeRoi
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Accumulation of stranded plastic objects and other artefacts at Inaccessible Island, central South Atlantic Ocean
sources had increased by at least 120 per cent, suggesting a recent increase in the density. of artefacts ... m boulder beach at the western point of Inaccessible Island, central South Atlantic Ocean. This ... repeated the survey made at the same site during 1984, when the highest density of artefacts at the Tristan ... Inaccessible Island. The minimum rate of artefact accumulation was 88 objects km-1 year-1. Total numbers of ...
Meeting Document : CCAMLR-VII/BG/04 : Autor(es): P.G. Ryan and B.P. Watkins (South Africa)
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Population trends of albatrosses and petrels at sub-Antarctic Marion Island
, could be contributing to the recent decreases in some of these species. Adoption of mitigation measures ... Abstract: We report on the population changes of five species of Procellariiform seabirds ... during the early to mid-1990s. Recently, all species have once again stabilized or decreased in numbers ... and can be explained by changes in tuna (Thunnus spp.) longline fishing effort in the southern Indian ...
Meeting Document : WG-FSA-01/11 : Autor(es): D.C. Nel, P.G. Ryan, R.J.M. Crawford, J. Cooper and O. Huyser (South Africa)
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Performance of an acoustic sonde design
is widely recognized. At a U.S. GLOBEC workshop in 1991, one of the considered problems was measuring ... Abstract: The potential of multi-frequency acoustic technology for quantifying fish and plankton ... macrozooplankton and micronekton. It was concluded that in order to survey animals in the size range 0.5-5 cm, it ... would be expedient to use at least three and perhaps as many as 8-10 frequencies in the range 38-420 kHz ...
Meeting Document : WG-EMM-95/09 : Autor(es): Foote, K.G.
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Effect of missing modes on calibration sphere target strengths (ICES CM 1996/b: 37, Fish Capture Committee)
used in the calibration of echo sounder systems, can be affected by the manner of suspension. This ... hypothesis is investigated in the context of reported experimental calibration trials with the SIMRAD EK500 ... reported measurement conditions for a series of cases in which single vibration modes remain unexcited. The ... is not supported by the data. Author(s): Foote, K.G. Title: Effect of missing modes on calibration ...
Meeting Document : WG-EMM-96/46 : Autor(es): Foote, K.G.
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An assessment of temporal variability and interrelationships between CEMP parameters collected on Adélie penguins at Béchervaise Island
Abstract: We examined temporal variability in a series of CEMP parameters collected over the ... the correlation of each parameter with breeding success. Breeding success was measured in terms of 1 ... sex of the foraging birds and the timing of foraging trips were important in determining whether ... ) the absolute number of chicks on the island which fully crèche and 2) the number of chicks crèched per ...
Meeting Document : WG-EMM-02/46 : Autor(es): L.M. Emmerson, J. Clarke, K. Kerry and C. Southwell (Australia)
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Global relationships amongst black-browed albatrosses: analysis of population structure using mtDNA and microsatellites
five island groups in the Southern Ocean. High levels of sequence divergence were found in both taxa ... could be the result of differences in foraging and dispersal patterns. Breeding black-browed albatrosses ... Abstract: The population structure of black-browed (Thalassarche melanophris and T. impavida) and ... (T. impavida). T. melanophris from Campbell Island contain birds from each of the three groups ...
Meeting Document : WG-FSA-01/19 : Autor(es): T.M. Burg and J.P. Croxall (United Kingdom)