Browsing IMEF - Instituto de Matemática, Estatística e Física by Author "Pedraza, Susana"
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Estimating dyad association probability under imperfect and heterogeneous detection
Klaich, Matias Javier; Kinas, Paul Gerhard; Pedraza, Susana; Coscarella, Mariano; Crespo, Enrique (2011)In animal behaviour studies, association indices estimate the proportion of time two individuals (i.e. a dyad) spend in association. In terms of dyads, all association indices can be interpreted as estimators of the ... -
A first estimate of franciscana (Pontoporia blainvillei) abundance off southern Brazil
Secchi, Eduardo Resende; Ott, Paulo Henrique; Crespo, Enrique; Kinas, Paul Gerhard; Pedraza, Susana; Bordino, Pablo (2001)The franciscana, Pontoporia blainvillei, is endemic to the western South Atlantic Ocean and is perhaps one of the most threatened small cetacean species in this region. This paper presents a first abundance estimate for ...