Resultados de la búsqueda
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Citizen science for large-scale data extraction from a citizen science network
that permit, for the first time, large scale, simultaneous monitoring of multiple colonies. Citizen ... feedback management actions were agreed, monitoring the efficacy of those actions would benefit from the ... replication of camera network monitoring sites. Author(s): T. Hart, C. Black (United Kingdom), L. Emmerson ...
Meeting Document : WG-EMM-15/31 : Autor(es): T. Hart, C. Black (United Kingdom), L. Emmerson (Australia), J. Hinke (USA) and C. Southwell (Australia)
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Age determination of Antarctic krill using size, fluorescence, and image analysis techniques
Abstract: The ages of 252 mature female krill, collected from Prydz Bay in January 1985, were ... determined using length frequency analysis and the fluorescent age pigment (FAP) technique. Results of both ... methods indicate 6 year classes for adult krill. Correspondence between the ages determined by the two ... techniques is generally within one year. The animals were also analyzed by a computerized image analysis ...
Meeting Document : SC-CAMLR-VI/BG/48 : Autor(es): M.S. Berman, A.L. McVey and G. Ettershank (USA)
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IMPROVING ESTIMATES OF ADÉLIE PENGUIN BREEDING POPULATION SIZE: DEVELOPING FACTORS TO ADJUST ONE-OFF POPULATION COUNTS FOR AVAILABILITY BIAS
their breeding sites during the breeding period are strongly dependent on the timing within a breeding ... Abstract: It is widely recognised that the interpretation of counts of penguin populations at ... season at which they are undertaken. While the need to adjust raw penguin count data obtained at varying ... times within a breeding season to minimise bias in estimates of the breeding population has long been ...
Meeting Document : WG-EMM-09/38 : Autor(es): C. Southwell, J. McKinlay, L. Emmerson, R. Trebilco and K. Newbery (Australia)
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Anthropogenic feather soiling, marine debris and fishing gear associated with seabirds at Bird Island, South Georgia, 1998/99
, marine debris and fishing gear associated with seabirds at breeding sites at South Georgia. In this, the ... Abstract: This report describes and quantifies the occurrence of anthropogenic feather soiling ... was recorded in association with wandering albatrosses. Quantities of fishing gear remained within the ... levels of previous years for all other species, except giant petrels, which increased by 75% from the ...
Meeting Document : SC-CAMLR-XVIII/BG/07 : Autor(es): Delegation of the United Kingdom
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INCOMPLETE SEARCH EFFORT AS A POTENTIAL SOURCE OF BIAS IN BROAD-SCALE ESTIMATES OF PENGUIN ABUNDANCE DERIVED FROM PUBLISHED COUNT DATA: A CASE STUDY FOR ADÉLIE PENGUINS IN EAST ANTARCTICA
m2 and within 500 m of the ocean) in the Australian Antarctic Territory (AAT) was mapped using a GIS ... , and the literature reviewed for evidence of the mapped habitat being searched for occupation by ... breeding Adélie penguins. The total area of potential breeding habitat was estimated to be close to 700 km2 ... . Definitive or reasonably strong evidence of search effort was found for 63% of all potential habitat sites ...
Meeting Document : WG-EMM-PSW-08/13 : Autor(es): C. Southwell, D. Smith and A. Bender (Australia)
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Survey design to estimate krill abundance during FIBEX
of the primary aims of FIBEX (First International BIOMASS Experiment), 1981 was to study the ... methodology for assessing the abundance of krill. The survey design used in the southwest Atlantic study area ... of the FIBEX is described in this paper. Sampling involved the use of echo sounders for estimating ... krill abundance as well as collection of data on the size, density and distribution of krill swarms. In ... survey in the Southern Ocean. Review and Outlook Memoirs of the National Institute of Polar Research No ... ABUNDANCE DURING FIBEX I. Everson, I. Hampton, G.M. Jolly Abstract One of the primary aims of FIBEX ... (First International BIOMASS Experiment), 1981 was to study the methodology for assessing the abundance ... of krill. The survey design used in the southwest Atlantic study area of the FIBEX is described in ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 253–263 : Autor(es): Everson, I., I. Hampton and G.M. Jolly
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CEMP data inventory/summary and updated spatial analysis of Area 48
concordance of response to changes in the ecosystem between sites by Subarea, suggesting CEMP data are ... by site and species, and a brief overview on general trends from the past three seasons by Subarea or ... -related analyses, including an update on CEMP metadata available on the CCAMLR GIS and as hosted on the ... NASA Global Change Master Directory (GCMD). CEMP data submissions for the 2017/18 season are detailed ...
Meeting Document : WG-EMM-18/44 : Autor(es): CCAMLR Secretariat
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e-imaf-01 report.pdf
... cruises (Isla Camila, Viking Bay, Eldfisk, Isla Graciosa), no offal was discharged during hauls; on the ... restricted number of breeding sites (essentially one). 7.19 With the exception of the satellite tracking ... studies of the Macquarie Island albatrosses and the survey of Tristan albatrosses, no research programs ... killed during night setting; that no birds were killed during day setting presumably reflects the very
application/pdf attached to:Ad Hoc WG-IMAF-01
Meeting Report : Ad Hoc WG-IMAF-01
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USING GENERALIZED DISSIMILARITY MODELLING TO ANALYSE AND PREDICT PATTERNS OF BETA DIVERSITY IN REGIONAL BIODIVERSITY ASSESSMENT
predicting spatial patterns of turnover in community composition (beta diversity) across large regions. The ... nonlinearity commonly encountered in large-scaled ecological data sets: (1) the curvilinear relationship ... between increasing ecological distance, and observed compositional dissimilarity, between sites; and (2 ... ) the variation in the rate of compositional turnover at different positions along environmental ...
Meeting Document : WS-VME-09/P03 : Autor(es): Richardson, K., Manion, G., Ferrier, S., Elith, J.
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Accumulation of fishing debris, plastic litter and other artefacts on Heard Island and Macquarie Island, Southern Ocean
summer 1987-88, and 1989 respectively. These surveys were carried out at the same sites of previous ... surveys in 1986-87 at Heard Island, and 1988 at Macquarie Island. The minimum rate of artefact ... . Drift cards released from known locations and collected on the two islands show a similar artefact ... catchment area. Plastic litter was a major component of the debris at both islands. Fisheries related debris ...
Meeting Document : CCAMLR-VIII/BG/11 : Autor(es): D.J. Slip and H.R. Burton (Australia)