Persistence and recolonisation determine success of bog restoration for aquatic invertebrates: a comment on Mazerolle et al. (2006)
until further notice
SourceFreshwater Biology, 52, 2, (2007), pp. 381-382
Article / Letter to editor
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Animal Ecology & Ecophysiology
SubjectAnimal Ecology and Eco Physiology; Environmental Sciences
1. Mazerolle et al. (2006) concluded that some aquatic invertebrate species, including bogassociated species, readily colonise man-made bog pools. In contrast, in Dutch bog remnants Van Duinen et al. (2003) found that a considerable number of bog-associated species do not colonise newly created bog pools. 2. The conclusion of Mazerolle et al. (2006) is based on vagile aquatic invertebrates. Here, we question whether their conclusion can be extended to more sedentary species, which were not captured in the Canadian study, but made up an important part of the invertebrate assemblage in the Dutch study. This discrepancy could be caused by sampling artefacts, low colonisation rates of these species or an incomplete restoration of site conditions. 3. In Canada, chances of recolonisation may be higher than in the Netherlands, as natural and near-natural bogs are more extensive. In the Netherlands, with low chances of recolonisation, persistence of species may be more important. To disentangle the relative importance of persistence and recolonisation, evaluations of the success of restoration projects need to cover the entire invertebrate assemblage, including both vagile and more sedentary species.
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