Suprabenthic community of the Cananeia lagoon estuarine region, southeastern Brazil
Tararam, A.S.; Wakabara, Y.; Flynn, M.N. (1996). Suprabenthic community of the Cananeia lagoon estuarine region, southeastern Brazil. Cah. Biol. Mar. 37(4): 295-308
In: Cahiers de Biologie Marine. Station Biologique de Roscoff: Paris. ISSN 0007-9723; e-ISSN 2262-3094, more
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| Authors | | Top |
- Tararam, A.S.
- Wakabara, Y.
- Flynn, M.N.
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| Abstract |
The temporal and spatial distribution of the suprabenthos in the marine sector of the Cananeia estuarine lagoon in the State of Slo Paulo, Brazil, is described. The studied area is a lower intertidal mud-flat with a scattered Spartina alterniflora cover. In relation to the total density, Metamysidopsis elongata atlantica dominated the suprabenthos. In relation to the total biomass, fish was the dominant group, followed by M. elongata atlantica and juveniles of Penaeus schimitti. In this suprabenthic community there was a sequential appearance, with high abundance, then disappearance of temporary supra-benthic species, besides strong temporal fluctuations of permanent species. Temporal variations of community diversity were greatly influenced by the local population dynamics, showing a clear seasonal pattern, negatively linked to peaks of density of dominant species and positively with evenness values. The density displayed a distinct pattern of seasonal changes, with high values in spring months, due to the abundance peak of M. elongata atlantica, followed by a marked decline in summer. In short, the suprabenthic commuifity analysed is characterized by a low species richness, low diversity values, and strong temporal fluctuations in species density. |
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