Use este identificador para citar ou linkar para este item: http://repositorio.bc.ufg.br/handle/ri/11893
Tipo do documento: Artigo
Título: Viability of the critically cndangered eastern Taiwan Strait population of Indo-Pacific humpback dolphins Sousa chinensis
Autor: Araújo, Claryana Costa
Wang, John Y.
Hung, Samuel K.
White, Bradley Neil
Silva, Daniel de Brito Candido da
Abstract: The 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.
Palavras-chave: Population modeling
Cetacean
Conservation
Marine mammal
País: Alemanha
Instituição: Inter-Research Science Center
Unidade acadêmica: Instituto de Ciências Biológicas - ICB (RG)
Citação: ARAÚJO, C. Claryana; WANG, John Y.; HUNG, Samuel K.; WHITE, Bradley N.; BRITO, Daniel. Viability of the critically cndangered eastern Taiwan Strait population of Indo-Pacific humpback dolphins Sousa chinensis. Endangered Species Research, Oldendorf, v. 24, n. 3, p. 263-271, June 2013.
Tipo de acesso: Acesso Aberto
Identificador do documento: 10.3354/esr00605
Identificador do documento: 10.3354/esr00605
URI: http://repositorio.bc.ufg.br/handle/ri/11893
Data de publicação: Jun-2013
Aparece nas coleções:ICB - Artigos publicados em periódicos

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