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Title

Alien aquatic macroinvertebrates along the lateral dimension of a large floodplain
Authors
Monbertrand, Anne-Laure
Paillex, Amael
Castella, Emmanuel
Published in Biological invasions. 2010, vol. 12, no. 7, p. 2219-2231
Collection Open Access - Licence nationale Springer
Abstract Floodplains are simultaneously among the most species-rich and the most threatened ecosystems. Alien aquatic macroinvertebrates contribute to this threat but remain scarcely studied in the lateral dimension of floodplains. We modelled the realized ecological niches of the alien species occurring in 24 floodplain channels of the Rhoˆne River. Environmental variables depicting the ecological niches were associated to the lateral hydrological connectivity and light availability, both being modified during floodplain restoration works. Eight alien species were observed and they demonstrated either ubiquity or a restricted niche, with no link to the date of introduction. For most of them, the main river channel appeared as an important dispersal route in the lateral dimension of the floodplain. An increase of both lateral connectivity and light availability favoured most of the modelled species. Consequently,we recommend that sector-scale restoration programmes preserve varying levels of lateral connectivity for floodplain channels to prevent the expansion of alien aquatic macroinvertebrates.
Keywords Ecological niche — Distribution modelling — Lateral hydrological connectivity — Light availability — Restoration — French Upper-Rhône River
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Article (Published version) (366 Kb) - public document Free access
Other version: http://www.springerlink.com/index/10.1007/s10530-009-9632-z
Structures
Faculté des sciences / Section des sciences de la Terre et de l'Environnement / Département F.-A. Forel des sciences de l'environnement et de l'eau
Centres et instituts / Institut des sciences de l'environnement
Research groups Ecology and Aquatic Biology
ISE Biodiversité
ISE Eau
ISE Pôle Sciences
Citation
(ISO format) 		MONBERTRAND, Anne-Laure, PAILLEX, Amael, CASTELLA, Emmanuel. Alien aquatic macroinvertebrates along the lateral dimension of a large floodplain. In: Biological invasions, 2010, vol. 12, n° 7, p. 2219-2231. doi: 10.1007/s10530-009-9632-z https://archive-ouverte.unige.ch/unige:17924

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Deposited on : 2011-12-23

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