Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 443417
Title Dispersal of invasive species by drifting
Author(s) Riel, M.C. van; Velde, G. van der; Vaate, A. bij de
Source In: Proceedings of the 18th International Conference on Aquatic Invasive Species, April 21-25, 2013, Ontario, Canada. - - p. 29 - 29.
Event 18th International Conference on Aquatic Invasive Species, Ontario, Canada, 2013-04-21/2013-04-25
Department(s) Alterra - Animal ecology
Aquatic Ecology and Water Quality Management
Publication type Abstract in scientific journal or proceedings
Publication year 2013
Abstract Drifting can be an effective way for aquatic organisms to disperse and colonise new areas. Increasing connectivity between European large rivers facilitates invasion by drifting aquatic acroinvertebrates. The present study shows that high abundances of invasive species drift in the headstream of the river Rhine. Dikerogammarus villosus and Chelicorophium curvispinum represented up to 90% of the total of drifting macroinvertebrates. Drift activity shows seasonal and diel patterns. Most species started drifting in spring and were most abundant in the water column during the summer period. Drift activity was very low during the winter period. Diel patterns were apparent; most species, including D. villosus, drifted during the night. Drifting macroinvertebrates colonised stony substrate directly from the water column. D. villosus generally colonised the substrate at night, while higher numbers of C. curvispinum colonised the substrate during the day. It is very likely that drifting functions as a dispersal mechanism for crustacean invaders. Once waterways are connected, these species are no longer necessarily dependent on dispersal vectors other than drift for extending their distribution range.
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