O papel dos impactos antrópicos nos processos locais e padrões globais de extinção em cetáceos

dc.contributor.advisor1Brito, Daniel
dc.contributor.advisor1Latteshttp://lattes.cnpq.br/5139765780779893por
dc.creatorAraújo, Claryana Costa
dc.creator.Latteshttp://lattes.cnpq.br/4500097384058348por
dc.date.accessioned2016-06-10T11:55:33Z
dc.date.issued2015-03-20
dc.description.abstractThe population of humpback dolphins Sousa chinensis that resides in the eastern Taiwan Strait (ETS) is geographically and genetically isolated from populations inhabiting the coastal waters of mainland China and appears to be facing unsustainable levels of human threats. Using VORTEX 9.99b, we modeled the viability of this Critically Endangered population under the present conditions as well as under realistic additional threat scenarios. We examined 6 different levels of bycatch mortality, 3 scenarios of habitat loss/degradation, and scenarios in which these threats were experienced together. Under the baseline (present) scenario, the population exhibited a decreasing growth rate and was predicted to be smaller than the initial population size in more than 76% of all model runs. In all scenarios with additional threats, the proportion of model runs in which population size was smaller than the initial size varied from 77.1 to 92.6%. Over the short term, fisheries-related mortality appears to have a more obvious impact on the population’s trajectory than habitat loss/degradation. Even minimal increases in mortality from the current baseline levels will increase the probability of extinction of this population. Due to the fragile situation of ETS humpback dolphins, mitigation actions to reduce the current threats to this population are needed immediately.eng
dc.description.resumoSem resumo.por
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESpor
dc.formatapplication/pdf*
dc.identifier.citationARAÚJO, C. C. O papel dos impactos antrópicos nos processos locais e padrões globais de extinção em cetáceos. 2015. 155 f. Tese (Doutorado em Ecologia e Evolução) - Universidade Federal de Goiás, Goiânia, 2015.por
dc.identifier.urihttp://repositorio.bc.ufg.br/tede/handle/tede/5677
dc.languageporpor
dc.publisherUniversidade Federal de Goiáspor
dc.publisher.countryBrasilpor
dc.publisher.departmentInstituto de Ciências Biológicas - ICB (RG)por
dc.publisher.initialsUFGpor
dc.publisher.programPrograma de Pós-graduação em Ecologia e Evolução (ICB)por
dc.rightsAcesso Abertopor
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectPopulation modelingeng
dc.subjectCetaceaneng
dc.subjectConservationeng
dc.subjectMarine mammaleng
dc.subject.cnpqECOLOGIA::ECOLOGIA APLICADApor
dc.titleO papel dos impactos antrópicos nos processos locais e padrões globais de extinção em cetáceospor
dc.title.alternativeThe role of anthropogenic impacts on local process and global patterns of extinction in cetaceanseng
dc.typeTesepor

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