Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.3/2141
Título: Exploitation of rocky intertidal grazers : population status and potential impacts on community structure and functioning
Autor: Martins, Gustavo M.
Jenkins, Stuart R.
Hawkins, Stephen J.
Neto, Ana I.
Thompson, Richard C.
Palavras-chave: Harvesting
Exploitation Index
Patella candei
Patella aspera
Population Structure
Community Structure
Fragmented Habitats
Data: Jul-2008
Editora: Inter Research
Citação: Martins GM, Jenkins SR, Hawkins SJ, Neto AI & Thompson RC (2008). "Exploitation of rocky intertidal grazers: population status and potential impacts on community structure and functioning". «Aquatic Biology», 3(1): 1-10. http://dx.doi.org/10.3354/ab00072.
Resumo: A wide range of anthropogenic activities are impacting the ecology of coastal areas. Exploitation of marine resources is one such activity, which, through cascading trophic effects, can have influences well beyond that of the target species. We investigated the mid-rocky-shore community structure of the Azores archipelago, a seldom-studied habitat, where there is a local tradition of exploiting limpets, the main intertidal grazers. The limpet population structure differed among islands, and there was an inverse relationship between the abundance of larger limpets and the human population per coastal perimeter, but not the associated catch data. At small scales of resolution (quadrats), there was a negative relationship between the cover of algae and limpets and a positive relationship between barnacles and limpets. These relationships were also apparent at the larger scale of islands as a function of the gradient of exploitation. Our results show how natural habitat fragmentation may be useful where the experimental testing of a hypothesis is not possible, and provide evidence for the trophic cascading effects of limpet exploitation at landscape scales.
Descrição: Copyright © Inter-Research 2008.
Peer review: yes
URI: http://hdl.handle.net/10400.3/2141
ISSN: 1864-7782 (Print)
1864-7790 (Online)
Versão do Editor: http://dx.doi.org/10.3354/ab00072
Aparece nas colecções:DBIO - Artigos em Revistas Internacionais / Articles in International Journals

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