The influence of multiple factors upon reef fish abundance and species richness in a tropical coral complex

Cipresso Pereira, Pedro Henrique Cipresso, Moraes, Rodrigo Lima, dos Santos, Marcus Vinicius Bezerra, Lippi, Daniel Lino, Feitosa, João Lucas Leão, and UNSPECIFIED (2014) The influence of multiple factors upon reef fish abundance and species richness in a tropical coral complex. Ichthyological Research, 61 (4). pp. 375-384.

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Abstract

The present study was conducted on Tamandaré reefs, northeast Brazil and aimed to analyse the importance of different factors (e.g. tourism activity, fishing activity, coral abundance and algal abundance) on reef fish abundance and species richness. Two distinct reef areas (A ver o mar and Caieiras) with different levels of influence were studied. A total of 8239 reef fish individuals were registered, including 59 species. Site 1 (A ver o mar) presented higher reef fish abundance and richness, with dominance of roving herbivores (29.9 %) and mobile invertebrate feeders (28.7 %). In contrast, at Site 2 (Caieiras) territorial herbivores (40.9 %) predominated, followed by mobile invertebrate feeders (24.6 %). Concerning the benthic community, at Site 1 macroalgae were recorded as the main category (49.3 %); however, Site 2 was dominated by calcareous algae (36.0 %). The most important variable explaining more than 90 % of variance on reef fish abundance and species richness was macroalgae abundance, followed by fishing activity. Phase shifts on coral reefs are evident, resulting in the replacement of coral by macroalgae and greatly influencing reef fish communities. In this context, it is important to understand the burden of the factors that affect reef fish communities and, therefore, influence the extinction vulnerability of coral reef fishes.

Item ID: 38789
Item Type: Article (Research - C1)
ISSN: 1616-3915
Keywords: reef fish community; fishing activity; coral abundance; algal abundance; phase shifts
Funders: Coordenação de Aperfeiçoamento de Pessoal de Nível Superior” (CAPES), Conselho Nacional de Desenvolvimento Científico e Tecnológico” (CNPq), Rufford Small Grants (RSG) , Idea Wild
Date Deposited: 13 May 2015 23:04
FoR Codes: 06 BIOLOGICAL SCIENCES > 0602 Ecology > 060202 Community Ecology (excl Invasive Species Ecology) @ 50%
06 BIOLOGICAL SCIENCES > 0602 Ecology > 060205 Marine and Estuarine Ecology (incl Marine Ichthyology) @ 50%
SEO Codes: 96 ENVIRONMENT > 9608 Flora, Fauna and Biodiversity > 960808 Marine Flora, Fauna and Biodiversity @ 50%
96 ENVIRONMENT > 9609 Land and Water Management > 960902 Coastal and Estuarine Land Management @ 50%
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