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Are invasives worse in freshwater than terrestrial ecosystems?
Author(s) -
Moorhouse Tom P.,
Macdonald David W.
Publication year - 2014
Publication title -
wiley interdisciplinary reviews: water
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.413
H-Index - 24
ISSN - 2049-1948
DOI - 10.1002/wat2.1059
Subject(s) - biodiversity , freshwater ecosystem , terrestrial ecosystem , ecosystem , aquatic ecosystem , invasive species , ecology , environmental science , ecosystem services , environmental resource management , geography , biology
Several lines of evidence suggest that the effects of invasive species may be greater in aquatic freshwaters than in terrestrial ecosystems. We argue that freshwaters are significantly more invasible—from a number of poorly regulated sources—and also more susceptible to negative biodiversity, physical ecosystem, and socioeconomic impacts when invaded, than their terrestrial counterparts. Moreover, the nature of freshwaters appears to result in impacts that are wide ranging and severe while being indirect, diffuse, and difficult to both detect and predict. For these reasons, we conclude that freshwater invasive species represent a special case, when compared with terrestrial invasives, in which the likelihood of negative impacts, and their effects, is disproportionately severe. We suggest that future approaches to research in this area should aim to audit the full array of impacts of a number of representative invasive species, with a view to building an evidence base to support the global implementation of a precautionary approach to the release of aquatic freshwater non‐native species. WIREs Water 2015, 2:1–8. doi: 10.1002/wat2.1059 This article is categorized under: Water and Life > Conservation, Management, and Awareness Water and Life > Stresses and Pressures on Ecosystems

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