Environmental variables and intertidal beach annelids of São Sebastião Channel (State of São Paulo, Brazil)
Rev. biol. trop
;
49(3/4): 849-857, Sep.-Dec. 2001.
Artigo
em Inglês
| LILACS
| ID: lil-333104
RESUMO
Benthic annelid communities were studied during a one-year period (August/95 to July/96) in two sectors of the beaches Engenho d'Agua and SÒo Francisco, SÒo SebastiÒo Channel (SÒo Paulo, Brazil), where the substrate is composed by a mixture of sand and rock fragments. Abiotic parameters such as salinity of interstitial water and sediment properties were used to characterize the environment. The polychaetes were well represented in the two sectors and their distribution was related with sediment type. The density of individuals and the number of taxa was higher at SÒo Francisco, while the diversity and the evenness were higher at Engenho d'Agua. This difference can be a consequence of organic enrichment caused by domestic input, and of the lower and more variable salinity at SÒo Francisco. Due to these factors, the high density of opportunistic species, like Capitella capitata ssp., Scolelepis squamata, Laeonereis acuta and several oligochaetes, represented 75.5 of total abundance at this sector.
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Índice:
LILACS (Américas)
Assunto principal:
Água do Mar
/
Meio Ambiente
/
Anelídeos
Limite:
Animais
País/Região como assunto:
América do Sul
/
Brasil
Idioma:
Inglês
Revista:
Rev. biol. trop
Assunto da revista:
Biologia
/
Medicina Tropical
Ano de publicação:
2001
Tipo de documento:
Artigo
País de afiliação:
Brasil
Instituição/País de afiliação:
Universidade Estadual de Campinas/BR
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