Résultats de la recherche
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Integrating Count Effort by Seasonally Correcting Animal Population Estimates (ICESCAPE): a method for estimating abundance and its uncertainty from count data using Adélie penguins as a case study
reported measures of uncertainty associated with originally published counts are propagated through to the ... for a site is used when none exists. Importantly, a common standardisation procedure allows site ... , the method is applied to several examples of published studies of Adélie penguin abundance at breeding ... breeding pairs, although the software has been developed to accommodate adjustment and aggregation of other ... variable. The numbers of breeding Adélie penguins, nests and chicks present at a site are known to vary ... during the breeding sea- son when weather and other determinants of site access permit, while the latter ... availability curves if no availability information exists for a site. Surrogate curves, if necessary, are ... each replicated date is obtained by randomly selecting a curve from the pool available for a site and ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 213–227 : Auteur(s): McKinlay, J., C. Southwell and R. Trebilco
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Variations in echosounder calibration with temperature, and some possible implications for acoustic surveys of krill biomass
biomass by acoustic techniques is dependent on a number of factors of which one of the most fundamental is ... accurate echosounder calibration. The Simrad EK500 scientific echosounder used aboard RRS James Clark Ross ... those applied in the Antarctic, even after adjustments have been made to account for differences in ... at both 38 and 120 kHz between calibrations conducted at the two locations. At 120 kHz, the required ... employed during surveys around South Georgia, and no account were taken of the differences in gain ... Fjord, Norway, under the supervision of Simrad engineers. Both Stromness Bay and Uggdalseidet Fjord ... respective research cruises and the calibration site. Variations in Echosounder Calibration with ... Stromness Bay, the sea temperature at the depth of the transducers (approximately 6 m) was typically 2.3 ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 273–281 : Auteur(s): Brierley, A.S., C. Goss, J.L. Watkins and P. Woodroffe
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Development of environmental indices F1, F3 and F4
), automatic weather stations and satellite imagery is explored with reference to the CEMP sites at Edmonson ... , Division 58.4.2). Possible links between the extent or sea-ice adjacent to CEMP sites, weather conditions ... at or near CEMP sites, and the dynamics of penguins during the breeding season are discussed. Author ... Abstract: The development of CEMP indices derived from visual data (indices F1, F3 and F4 ...
Meeting Document : WG-EMM-00/27 : Auteur(s): S. Olmastroni and S. Corsolini (Italy), K. Kerry and J. Clarke (Australia) and D. Ramm (CCAMLR Secretariat)
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e-sc-iv-a7.pdf
... 1980. BIOMASS REPT SER No. 21. Meeting of the BIOMASS Working Party on Bird Ecology. Hamburg 1981 ... . BIOMASS REPT SER. No. 34. Meeting of the Biomass Working Party on Bird Ecology. Wilderness 1983 ... . The relevant information is contained in SC-CAMLR-III/BG/9. BIOMASS REPT SER. No. 35. Meeting of ... baseline data at one or more sites. 18. Of all the Antarctic pinniped, seabird, and cetaceans, the
application/pdf attached to:WG-EM-85Meeting Report : WG-EM-85
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Trends in population size and breeding success at colonies of macaroni and rockhopper penguins, Marion Island, 1979/80–1995/96
for rockhopper penguins were 0.68 eggs and 0.48 respectively. The largest of the three macaroni ... penguin colonies investigated decreased in size over the study period, while the other two remained stable ... . The only significant relationship between inter-season trends in the number of pairs breeding at the ... transfer. The larger two of the three rockhopper penguin colonies investigated decreased over the study ... the north of Macaroni Bay and at Archway Bay (Figure 1). From 1979/80 to 1982/83, each colony was ... Penguins There was no obvious long-term trend over the study period in the number of clutches laid at ... Archway Bay and Van den Boogaard River (Figure 2). However, the number of clutches laid decreased at ... of the breeding colonies at Macaroni Bay and Archway Bay were negatively correlated, but numbers of ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 89–103 : Auteur(s): Cooper, J., A.C. Wolfaardt and R.J.M. Crawford
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e-sc-v-a6.pdf
... of monitoring of predator-prey interactions in the Southern Ocean system were: - the Prydz Bay ... , specific parameters were selected for inclusion in monitoring programs to be established in the Prydz Bay ... the prey species in the areas selected (Prydz Bay region, the Antarctic Peninsula region, and South ... integrated monitoring of krill taking into account environmental variability in the Prydz Bay region (Krill
application/pdf attached to:WG-CEMP-86Meeting Report : WG-CEMP-86
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Atlas of coastal sea ice in eastern Antarctica
of Mawson, at Edmonson Point in the vicinity of the Italian Station of Terra Nova Bay and at Ross ... areas which are centered on Mawson, Davis, Casey, Dumont D’Urville and Terra Nova Bay. The latter volume ... vicinity of the CCAMLR Ecosystem Monitoring Program sites at Bechervaise Island near the Australian Station ... Edmonson Point CEMP monitoring sites The sample images chosen are for two breeding seasons of the Adélie ...
Meeting Document : WG-EMM-02/54 : Auteur(s): K. Michael, K. Hill, K. Kerry and H. Brolsma (Australia)
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e-sc-xvii-a4-appD.pdf
... . Conclusions 3.15 It was concluded that no statistical analysis was possible with the present data, however it ... Island, Admiralty Bay and Signy Island. 3.42 For the Scotia Sea region, NCAR SST data were selected to ... observed in 1990/91, the biomass in Subarea 48.1 in 1990/91 was no lower than biomasses observed in 1983/84 ... Admiralty Bay (Subarea 48.1, see Attachment D) were not critically examined given the short time available
application/pdf attached to:WS-AREA 48-98Meeting Report : WS-AREA 48-98
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Spawning locations of mackerel icefish at South Georgia
: Historical information on the distribution of spawning and larval mackerel icefish (Champsocephalus gunnari ... inshore spawning at South Georgia during April within and close to the bays on the north side of the ... island. Some spawning almost certainly occurs over much of the island shelf, although is this appears to ... . There are also indications of a possible second spawning season in January, although the evidence is ... following day, two on 20 March and 14 on 30 March. 011 5 April the catch was just three, and no further ... 1978. No such concentrations had been present there when the same bays had been sampled in February ... East Bay. The nets were generally set in the late afternoon and hauled early the following morning ... Bay on a transect running along the mail7 axis of the bay (North, 1987; 1990; North and Murray, 1992 ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 107–118 : Auteur(s): Everson, I., A.W. North, A. Paul, R. Cooper, N.C. McWilliam and K.-H. Kock
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Australian research on Antarctic bird and seal diets
data on the diets of important vertebrate predator species in Prydz Bay and around the sub-Antarctic ... Heard and Macquarie Islands have been collected during the last seven years. Published and unpublished ... results are collated and summarised, and several important points emerge. In Prydz Bay, on which is ... cantered the CCAMLR Ecosystem Monitoring Programme's priority study area, Euphausia superba forms a ... species in Prydz Bay and around the sub-Antarctic Heard and Macquarie Islands have been collected during ... important points emerge. In Prydz Bay, on which is centered the CCAMLR Ecosystem Monitoring Programme's ... Davis Station (68°30'S:77°50'E), in the south-eastern corner of the Prydz Bay Priority Area of CEMP ... well as other locations in Prydz Bay. Most work has concentrated on the Adelie penguin, Pygoscelis ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 231-249 : Auteur(s): Williams, R.