Fine-scale habitat selection of Chilean dolphins (Cephalorhynchus eutropia)

interactions with aquaculture activities in southern Chiloe Island, Chile

Sandra Ribeiro, Francisco A. Viddi, José Luís Cordeiro, Thales R. O. Freitas

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    36 Citations (Scopus)
    10 Downloads (Pure)

    Abstract

    Fine-scale habitat selection of Chilean dolphins was studied between January and April 2002 through shore-based theodolite tracking in order to investigate the environmental and behavioural determinants of habitat use, and to evaluate the interactions between this species and aquaculture activities in Yaldad Bay, southern Chile. During 293.5 h of effort, movement and habitat selection patterns of dolphins exhibited a significantly concentrated use of only 21% of the entire study area. Correspondence analysis showed that shallow waters (5–10 m), proximity to coast and rivers were the most significant environmental parameters determining fine-scale dolphin distribution patterns, with foraging the most frequently observed activity. Aquaculture activities in the area were observed to affect dolphin habitat use patterns by restricting space available for biologically important dolphin behaviours.
    Original languageEnglish
    Pages (from-to)119-128
    Number of pages10
    JournalJournal of the Marine Biological Association of the United Kingdom
    Volume87
    Issue number1
    DOIs
    Publication statusPublished - 2007

    Bibliographical note

    Copyright 2007 Cambridge University Press. Article originally published in Journal of the Marine Biological Association of the United Kingdom, Volume 87, Issue 1, pp. 119-128 . The original article can be found at http://dx.doi.org/10.1017/S0025315407051594.

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