Comparison between the distributions of land-locked Atlantic salmon Salmo salar L. and three-spined stickleback Gasterosteus aculeatus L. in the river Namsen, Norway
Main Article Content
Abstract
The land-locked salmon Salmo salar L. in the river Namsen is found up-stream to a waterfall situated 290 m above s.l. It is found both above and below the Trongfoss waterfall in the main river. The three-spined stickleback Gasterosteus aculeatus L. in the river Namsen is found as far up as about 130 m above s.l., below the Trongfoss waterfall, although in some of the tributaries it extends higher up than the land-locked salmon. An explanation of the differing distribution of the two species is that the salmon immigrated into the river before about 9500 B.P. (years before present), wheras the three-spined stickleback immigrated after 9500 B.P. but before 9100 B.P.
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).