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Fragmentation of riparian floras in rivers with multiple dams
Umeå University.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences. Umeå University.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences. Umeå University.
2000 (English)In: Ecology, ISSN 0012-9658, E-ISSN 1939-9170, Vol. 81, no 4, 899-903 p.Article in journal (Refereed) Published
Abstract [en]

Rivers are increasingly fragmented by dams, resulting in disruption of natural dispersal pathways and subsequent changes of riverine communities. We assessed the effect of dams as barriers to plant dispersal along rivers by comparing the flora of vascular plants between pairs of run-of-river impoundments in northern Sweden. Adjacent impoundments in similar environmental settings develop different riparian floras because species with poor floating capacity become unevenly distributed among impoundments. Such discontinuities were not found along a free-flowing river, suggesting effective dispersal of riparian plants in the absence of dams. Given that dams regulate most of the world's rivers, floristic disruptions of riparian corridors may be a global phenomenon. The extensive fragmentation of other ecosystems may have caused similar obstructions to organism dispersal, with subsequent changes in species composition.

Place, publisher, year, edition, pages
2000. Vol. 81, no 4, 899-903 p.
Keyword [en]
corridor functions, dams as barriers to plant dispersal, dams vs., ecological riparian continuity, fragmentation, hydrochory, plant, species composition and dispersal, regulated rivers, riparian, vegetation, seed dispersal, Sweden, vegetative dispersal, plant-communities, hydrochory, dispersal, conservation, invasibility, biodiversity, vegetation, corridors, dynamics, patterns
National Category
Ecology
Identifiers
URN: urn:nbn:se:miun:diva-13686ISI: 000086351500003Scopus ID: 2-s2.0-0033945134OAI: oai:DiVA.org:miun-13686DiVA: diva2:412208
Available from: 2011-04-21 Created: 2011-04-21 Last updated: 2016-10-10Bibliographically approved

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Nilsson, ChristerRenöfält, Birgitta
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