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Sponge Distribution at Arraial do Cabo, SE Brazil

by Guilherme Muricy, Univ Federal do Rio de Janeiro, Rio de Janeiro, Brazil,
Eduardo Hajdu, Univ Federal do Rio de Janeiro, Rio de Janeiro, Brazil,
Marcio Custodio, Univ Federal do Rio de Janeiro, Rio de Janeiro, Brazil,
Michelle Klautau, Univ Federal do Rio de Janeiro, Rio de Janeiro, Brazil,
Claudia Russo, Univ Federal do Rio de Janeiro, Rio de Janeiro, Brazil,
Solange Peixinho, Univ Federal do Rio de Janeiro, Rio de Janeiro, Brazil,



Document Type: Proceeding Paper

Part of: Coastal Zone '91

Abstract:

Spatial and temporal distribution of shallow water sponges were studied on southeastern Brazilian rocky coasts by means of qualitative and quantitative samples made by SCUBA diving. Cluster analysis upon qualitative data showed heterogeneity of species composition at a regional scale (kilometres), and direct underwater observations showed heterogeneity at a local scale (few meters). Most species were stenotopic, but a few common species were eurytopic. Temporal variation was not significant (p = 0,05) for the five dominant species at the regional level, but it was significant for two species at the local level. Results are discussed on the light of problems and perspectives in biomonitoring strategies.

Subject Headings: Developing countries | Spatial distribution | Shallow water | Sea water | Heterogeneity | Data analysis | Wildlife | Brazil | South America

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