Effets combinés de la pêche et de l'eutrophisation sur la perche (Perca fluviatilis L.) dans les eaux vaudoises du Léman |
| |
| Authors: | Barbara Lang Claude Lang |
| |
| Institution: | (1) Conservation de la faune, 1. chemin du Marquisat, CH-1025 St-Sulpice, Suisse |
| |
| Abstract: | Catches of perch have strongly decreased in Lake of Geneva from 1975 to 1981. This decrease was attributed to the impact of
overfishing, enhanced by the accelerated growth of perch. Therefore, too many perches were captured before their first reproduction
and the stocks of reproducers were strongly reduced. Furthermore, adverse meteorological conditions occurred probably during
several periods of reproduction. The accelerated growth of perch was attributed to the combined effects of increasing eutrophication
(more food available) and of overfishing (decreased perch density in the shoals).
|
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
