Riparian ecotones and spatial variation of fish assemblages in Portuguese lowland streams

✍ Scribed by M. J. Collares-Pereira; M. F. Magalhāes; A. M. Geraldes; M. M. Coelho

• Book ID: 104615778
• Publisher: Springer
• Year: 1995
• Tongue: English
• Weight: 626 KB
• Volume: 303
• Category: Article
• ISSN: 1573-5141
• DOI: 10.1007/bf00034047

✦ Synopsis

The first results of a long-term study on the role of riparian ecotones on the population and community dynamics of Iberian stream fish are presented and discussed . Riparian and macrophyte cover, bank slope and depth were among the most important variables affecting fish distribution . In general small fish favoured shallow areas with high macrophyte cover, whereas large fish dominated in deep areas with a high riparian cover . Slight spatial changes in terrestrial prey use were found suggesting a minor role for this resource during autumn . Finally, no significant spatial differences were found for linear growth, although some differences were obtained for the condition factor .