Fish stocks of the Ancora River, northern Portugal: production

• Tipo: Artigo em Revista Científica Internacional
• Data: 1999

Autores

Formigo, N (Autor) FCUP; Penczak, T (Autor) Outra

Revista

Título: Fisheries Research

Vol. 40

Páginas: 91-96

ISSN: 0165-7836

Editora: Elsevier

Indexação

ISI Web of Knowledge - 2 Citações

Scopus - 3 Citações

Classificação Científica

FOS: Ciências agrárias > Agricultura, silvicultura e pescas

Outras Informações

ID Authenticus: P-001-55N

DOI: 10.1016/s0165-7836(98)00216-1

Abstract (EN): The mean biomass ((B) over bar) and production (P) of four fish populations (brown trout, Salmo trutta m. fario (L.)), Iberian roach, Rutilus arcasii (Steindach.), Iberian nase, Chondrostoma polylepis (Steindach., ssp. duriensis (Coelho)), and eel. Anguilla anguilla (L.)) were assessed in the Ancora River, north Portugal. At four sites located along the course of the Ancora River and one site on its tributary (B) over bar and P were in the range 36.5-283.9 kg ha(-1) and 34.0-608.5 kg ha(-1) yr(-1), respectively. Lowest values were recorded at sites in the middle course of the main river, isolated by numerous dams and waterfalls. Greatest values were recorded in the natural tributary (Gondar Creek) and in the outflow section of the main river.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6