Fish stocks of the Ancora River, northern Portugal: production

• Type: Article in International Scientific Journal
• Date: 1999

Authors

Formigo, N (Author) FCUP; Penczak, T (Author) Other

Journal

Title: Fisheries Research

Vol. 40

Pages: 91-96

ISSN: 0165-7836

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 2 Citations

Scopus - 3 Citations

Scientific classification

FOS: Agrarian Sciences > Agriculture, Forestry, and Fisheries

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6