Data/hora: 05/06/2024 18:18:01

Provedor de dados: | 104
País: | Brazil
Título: | Population dynamics and secondary production of Euzonus furciferus Ehlers (Polychaeta, Opheliidae) in an exposed sandy beach of Southern Brazil
Autores: | Souza,José R. B. de; Borzone,Carlos A.
Data: | 2007-12-01
Ano: | 2007
Palavras-chave: | Annelida; Benthos; Deposit feeder; Intertidal; Macrofauna.
Resumo: | The distribution, population dynamics and secondary production of the polychaete Euzonus furciferus was studied in Atami Beach (Southern Brazil), from February 1992 to March 1993. Euzonus furciferus Ehlers, 1897 is the only deposit feeder species of the upper intertidal region. The organisms were present in the sandy beach all over the year, concentrated in a narrow band, and reaching maximal densities of 3,029 individuals m-2. Peaks of abundance occurred in September 1992, with a mean of 681.8 individuals m-2. Recruitment occurred in winter, with a peak in July. Mean annual biomass was estimated in 0.218 gAFDW m-2, with a total annual production of 0.466 gAFDW m-2 y-1, giving a P/B ratio of 2.13 y-1. Similar values were found for a filter-feeder polychaete inhabiting the same beach, suggesting that general food disposability of each particular environment is more important for production than the trophic strategic employed by those organisms exploring this environment.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752007000400034
Editor: | Sociedade Brasileira de Zoologia
Relação: | 10.1590/S0101-81752007000400034
Formato: | text/html
Fonte: | Revista Brasileira de Zoologia  v.24 n.4 2007
Fonte: | info:eu-repo/semantics/openAccess