Journal
AQUATIC BOTANY
Volume 90, Issue 4, Pages 315-320Publisher
ELSEVIER
DOI: 10.1016/j.aquabot.2008.12.002
Keywords
Maerl; Macroalgae; Coralline algae; Marine biodiversity; Brazil
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Funding
- 'Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior' (CAPES)
- 'Conselho Nacional de Desenvolvimento Cientifico e Tecnologico' (CNPq)
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Rhodolith beds are built by the aggregation of free living marine benthic coralline algae. Herein, we described phytobenthic Communities associated with subtidal rhodolith beds in northeastern Brazil and tested the hypothesis that depth affects their structure. We compared macroalgal assemblages from depths of 10, 15 and 20 m. The genus Lithothamnion was dominant in these beds. Rhodolith density was similar at different depths, but volume decreases as depth increases. Sixty-seven species of fleshy algae were collected, The red algal order Ceramiales was dominant. A distinct community corresponds to each sampled depth. The shallower depth presented higher values for biomass. number of species, Shannon-Wiener diversity, and Pielou's evenness. When depth and water transparency increased, the number of species and the abundance of macroalgae decreased. (C) 2008 Elsevier B.V. All rights reserved.
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