Artificial reefs and their effects on fish assemblages in a Brazilian reservoir and Tailrace
Nenhuma Miniatura disponível
Data
2002-12-01
Autores
Freitas, Carlos E.C.
Petrere Jr, Miguel [UNESP]
Abuabara, Maria A.P. [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Resumo
In this paper, we evaluate the effects of artificial reefs on fish assemblages in a hypereutrophic reservoir and in the lotic zone immediately below dam. Fish diversity was highest in the lotic zone relative to the reservoir. We also found an inverse relationship between diversity and distance from the river margin. Catches near the artificial reefs were more diverse than in control areas. A seasonal effect, possibly caused by variation in temperature, was significant in all comparisons. We argue that, in a scale of local effects, the ecological function of these structures would be similar to refuges.
Descrição
Palavras-chave
Artificial reefs, Diversity, Fish, Lotic zone, Refuges, artificial reef, dam, eutrophic environment, ichthyofauna, lotic environment, refuge, restoration ecology, species diversity, Brazil, Ichthyofauna
Como citar
Ecohydrology and Hydrobiology, v. 2, n. 1-4, p. 305-313, 2002.