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Message to managers: address ecosystem service impacts of invaders
Land managers have long fought plant invasions in wildlands because invaders can harm native biodiversity, choking out native species and reducing habitat quality for animal species. But a recent paper in Bioscience, co-authored by ESS assistant professor Virginia Matzek, argues that land managers should be focusing more on invaders that have impacts on ecosystem services, the natural benefits that intact, functioning ecosystems provide to humans. For instance, some plant invaders are water hogs, depleting water that could otherwise go to irrigation; others impede navigation in streams or decrease salmon runs.
The Bioscience paper proposes that broadening the focus of management efforts to include impacts on ecosystem services may also improve the funding situation for invasive plan management, which has suffered under the recent economic decline. Currently, innovative payment for ecosystem services schemes are being developed to link natural resource management with benefits to stakeholders and users, and weed management, if linked to ecosystem service provision, could fit well into these new approaches.
The full article reference is Funk, JL; Matzek, V; Bernhardt, M; and Johnson, D. 2014. Broadening the case for invasive species management to include impacts on ecosystem services. Bioscience 64(1): 58-63. A draft version is available here.