Resultados de la búsqueda
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General information about CEMP
distances between the main sampling sites, the location of sites with respect to small-scale management ... Abstract: The CCAMLR Ecosystem Monitoring Program (CEMP) was established in 1985 with the aim to ... detect and record significant changes in critical components of the Antarctic ecosystem, and to ... units and the matrix of data submitted to the Secretariat. Author(s): Secretariat Title: General ...
Meeting Document : WG-EMM-03/25 : Autor(es): Secretariat
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PREDICTING SPECIES DISTRIBUTIONS FROM MUSEUM AND HERBARIUM RECORDS USING MULTI-RESPONSE MODELS FITTED WITH MULTIVARIATE ADAPTIVE REGRESSION SPLINES
Abstract: Current circumstances — that the majority of species distribution records exist as ... methods for using these data. Such methods must, in particular, accommodate the difficulties caused by ... lack of reliable information about sites where species are absent. Here we test two approaches for ... overcoming these difficulties, analysing a range of data sets using the technique of multivariate adaptive ...
Meeting Document : WS-VME-09/P02 : Autor(es): Elith, J., Leathwick, J.
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How similar are CEMP indices from adjacent locations? A case of study using Pygoscelis adeliae and P. papua monitoring data from three breeding colonies on King George Island
Abstract: What is the spatial scale of monitoring conducted at an individual CCAMLR Ecosystem ... species that are monitored at three sites on King George Island/Isla 25 de Mayo, within 30km of one ... across sites in census data, implying similar information is being collected at all three sites. We also ... the need for CEMP monitoring to be distributed widely to encapsulate population responses to changing ...
Meeting Document : WG-EMM-14/43 : Autor(es): M.M. Santos (Argentina), M. Korczak-Abshire (Poland), M.A. Juáres (Argentina), W.Z. Trivelpiece and J.T. Hinke (USA)
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Growth per molt of male snow crab Chionoecetes opilio from Conception and Bonavista Bays, Newfoundland
animals. The molt increments appear similar to those observed from Conception Bay. Author(s): D.M. Taylor ... Abstract: Over 6000 male snow crabs were tagged during a 6-year period in Conception Bay ... , Newfoundland, in order to estimate the increase in size at the time of molting. Ninety-two animals were ... recaptured which had usable information on growth increments. Based on the amount of growth, we hypothesized ...
Meeting Document : WS-CRAB-93/12 : Autor(es): D.M. Taylor and J.M. Hoenig (USA)
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Antarctic neritic krill Euphausia chrystallorophias: spatio-temporal distribution, growth and grazing rates
Prydz Bay region. Size frequency analysis indicated that the generation time was ~ 3 years in the Indian ... sector of the Southern Ocean. Total life span of E.crystallorophias may exceed 5 years in the Prydz Bay ... Bay and the Cosmonaut Sea, spawning of E.crystallorophias appears to peak from the end of November to ... Abstract: Dynamics of distribution, growth, life span and feeding were studied in the endemic ...
Meeting Document : WG-Joint-94/10 : Autor(es): E.A. Pakhomov (Ukraine) and R. Perissinotto (South Africa)
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ASPECTS OF POPULATION STRUCTURE, DYNAMICS, AND DEMOGRAPHY OF RELEVANCE TO ABUNDANCE ESTIMATION: ADÉLIE PENGUINS
breeding sites during the breeding season. The objective of this paper is to identify and describe the ... interpretation of counts made at breeding sites and the estimation of overall population abundance derived from ... proportion of each category either at the breeding site or at sea may potentially differ. Author(s): L ... aspects of Adélie penguin population structure, dynamics and demography that are relevant to the ...
Meeting Document : WG-EMM-PSW-08/09 : Autor(es): L. Emmerson and C. Southwell (Australia)
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Modelling availability bias using existing time series count data: Adélie penguins as a case study
sites in Antarctica during the breeding season are influenced by the date at which they are undertaken ... of sites and years around Antarctica were modelled using quantile regression to estimate the range of ... . A count of some attribute of the population on any date may therefore need to be adjusted by some ... date-specific factor (termed the availability fraction) if the count is to form the basis of an ...
Meeting Document : WG-EMM-04/54 : Autor(es): L. Emmerson, B. Raymond and C. Southwell (Australia)
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Trophic study of Ross Sea Antarctic toothfish (Dissostichus mawsoni) using carbon and nitrogen stable isotopes
and Terra Nova Bay Trench. In contrast, all of the four potential prey species caught in the Northern ... and 88.1J) during two fishing seasons 2005/6 and 2006/7. The species sampled were: 6 fish: Antarctic ... glacialis (Gg, n=3), Kondakovia longimana (Kl, n=20), Psychroteuthis glacialis (Pg, n=20) and the Colossal ... ), Octopodid sp. 2 (Oct-2, n=5) and Cirroctopus glacialis (Cg, n=9). Length and SSRU were the most significant ...
Meeting Document : WG-EMM-08/27 : Autor(es): S.J. Bury, M.H. Pinkerton, D.R. Thompson, S. Hanchet, J. Brown and I. Vorster (New Zealand)
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Monitoring Antarctic environmental variables using penguins
100 m of the water column was highest in the western section of the Bay which concurred with higher ... biotic features of the environment can be studied using animals to transport probes to the study site ... Abstract: Water temperature and krill abundance in Maxwell Bay, Antarctica, were examined using ... trips from 49 penguins indicated that during December 1991 and January 1992 the temperature in the top ...
Meeting Document : WG-CEMP-94/27 : Autor(es): R.P. Wilson, B.M. Culik and R. Bannasch (Germany) and J. Lage (France)
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SEASONAL ESTIMATION OF ABUNDANCE BY BOOTSTRAPPING INEXACT RESEARCH DATA (SEABIRD): A METHOD FOR ASSESSING ABUNDANCE AND UNCERTAINTY FROM HISTORICAL COUNT DATA USING ADELIE PENGUINS AS A CASE STUDY
sites in Antarctica, Southwell (2004) proposed a general abundance estimator appropriate for a species ... of that kind. The present study attempts to implement this estimator in the form of a parametric ... uncertainty at breeding sites in Antarctica. To achieve this task, a menu-driven suite of routines titled ... the R language for statistical computing (R Development Core Team 2008). Software is reliant on data ...
Meeting Document : WG-EMM-PSW-08/11 : Autor(es): J.P. McKinlay and C.J. Southwell (Australia)