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The effects of tour boats on the behavior of bottlenose dolphins (Tursiops truncatus) in Walvis Bay, Namibia

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dc.contributor Universitat de Vic - Universitat Central de Catalunya. Facultat de Ciències i Tecnologia
dc.contributor.author Torres Ramis, Agnès
dc.date.accessioned 2018-11-06T15:57:50Z
dc.date.available 2018-11-06T15:57:50Z
dc.date.created 2018-06
dc.date.issued 2018-06
dc.identifier.uri http://hdl.handle.net/10854/5562
dc.description Curs 2017-2018
dc.description.abstract Cetacean watching has increased in recent years, being whales and dolphins the focus of these tourism activities. Several studies worldwide have suggested that tour boat activities have effects on cetacean’s behavior. Here, we studied the population of common bottlenose dolphins (Tursiops truncatus) inhabiting Walvis Bay (Namibia), in order to analyze the effect of tour boat activities on the dolphins’ behavior. Boat-based behavioral surveys were carried out by the Namibian Dolphin Project organization from 2009 to 2016. Temporal variation in dolphins’ behavior over seasons (winter and summer) and years was also analyzed. Our results showed that bottlenose dolphins mainly reduced their resting and surface feeding behaviors under the presence of tour boats, while milling and socializing behaviors were increased. This suggests that the population is reacting to tour boat presence by balancing their activity budget and energetic demands. The dolphins also exhibited a seasonal and annual effect on their behavioral budget, proposing that tour boat activity may have influenced this species, as dolphins have not completely habituated to this disturbance. Small and dispersed groups of dolphins observed under the presence of tour boats suggested that dolphins in Walvis Bay actively avoided boat interactions. However, further studies are necessary in order to document long-term effects in areas where tourism activity is experiencing an increase. Also, future conservation and management plans towards achieving a more ecological and economic sustainability of the cetacean-watching activity would be needed. es
dc.format application/pdf es
dc.format.extent 44 p. es
dc.language.iso eng es
dc.rights Tots els drets reservats es
dc.subject.other Animals -- Hàbits i conducta es
dc.subject.other Cetacis es
dc.subject.other Mamífers marins es
dc.subject.other
dc.title The effects of tour boats on the behavior of bottlenose dolphins (Tursiops truncatus) in Walvis Bay, Namibia es
dc.type info:eu-repo/semantics/bachelorThesis es
dc.rights.accesRights info:eu-repo/semantics/closedAccess es

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