Artificial reefs and their effects on fish assemblages in a Brazilian reservoir and Tailrace

• Autorzy: Freitas C.E.C. , Petrere M.,Jr. , Abuabara M.A.P.
• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

fish; Brazilian reservoir; artificial reef; diversity; reef; refuge; ecohydrology; aquatic environment

• Wydawca: -
• Czasopismo: International Journal of Ecohydrology and Hydrobiology
• Rocznik: 2002
• Tom: 02
• Numer: 1-4
• Opis fizyczny: p.305-313,fig.,ref.

Twórcy

autor

Freitas C.E.C.

• University Federal of Amazon, Av.Gen.Rodrigo Otavio, 3000, 69077-000, Manuas-Amazonas-Brazil

autor

Petrere M.,Jr.

autor

Abuabara M.A.P.