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 498576
Title Predicting Effects of Water Regime Changes on Waterbirds: Insights from Staging Swans
Author(s) Nolet, Bart A.; Gyimesi, Abel; Krimpen, Roderick R.D. Van; Boer, Fred de; Stillman, Richard A.; Green, Andy J.
Source PLoS One 11 (2016)2. - ISSN 1932-6203
Department(s) Centre for Ecosystem Studies
Resource Ecology
Aquatic Ecology and Water Quality Management
Publication type Refereed Article in a scientific journal
Publication year 2016
Abstract Predicting the environmental impact of a proposed development is notoriously difficult,
especially when future conditions fall outside the current range of conditions. Individualbased
approaches have been developed and applied to predict the impact of environmental
changes on wintering and staging coastal bird populations. How many birds make use of
staging sites is mostly determined by food availability and accessibility, which in the case of
many waterbirds in turn is affected by water level. Many water systems are regulated and
water levels are maintained at target levels, set by management authorities. We used an
individual-based modelling framework (MORPH) to analyse how different target water levels
affect the number of migratory Bewick’s swans Cygnus columbianus bewickii staging at
a shallow freshwater lake (Lauwersmeer, the Netherlands) in autumn. As an emerging property
of the model, we found strong non-linear responses of swan usage to changes in water
level, with a sudden drop in peak numbers as well as bird-days with a 0.20 m rise above the
current target water level. Such strong non-linear responses are probably common and
should be taken into account in environmental impact assessments
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