| Abstrakt: |
Modeling habitat use for dusky dolphin and Commerson's dolphin in Patagonia. Worldwide, cetacean populations have been facing various threats, including interactions with commercial fisheries, habitat degradation and fragmentation, diseases caused by pollution, and physical and acoustic disturbances as a result of increased nautical traffic, tourism interactions, and offshore oil exploration and exploitation (Au & Green, 2000; Ayres et al., 2012; Bayne et al., 1985; Douglas et al., 2008; Goodall et al., 1995; Olesiuk et al., 2002; Pennino et al., 2016; Reeves et al., 2003; Tanabe et al., 1983). There are strong indications that Commerson's dolphins are not severely affected by these activities, and that either they are used to the boats or that this area is a core feeding habitat for them and, therefore, they are not able to find a suitable alternative habitat to fulfill their needs in the way that the estuary does (Coscarella, 2005; Coscarella et al. 2003, 2010; Tyne et al., 2018). Commerson's dolphins tend to approach the boat, therefore the boat always remained stopped during sightings until dolphins disappeared from view, and then it resumed searching for a new school of dolphins. [Extracted from the article] |
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