Ecology of the regulated river Storelva in western Norway 50 years after regulation
Main Article Content
Abstract
The river Storelva, situated in Sauda, Rogaland in western Norway has been regulated for hydroelectric power since 1914 and about 80% of the water-flow is transferred through tunnels to the various power stations and then to the fjord. The river held a uniform benthic invertebrate fauna which was dominated numerically by chironomids and a few other groups, viz. the trichopteran Polycentropus flavomaculatus and the stoneflies Amphinemura sulcicollis and Leuctra fusca. The feeding groups collectors, both filterers and gatherers, and predators were strongly represented in this regulated river. The population of salmon was negligible and only low numbers of trout occurred. The young trout mainly fed on the chironomid larvae.
Downloads
Article Details
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).