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  • 51.
    Strasevicius, Darius
    et al.
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Nyholm, Erik
    Malmqvist, Björn
    Does river regulation reduce fledging success of European pied flycatchers via changed aquatic insect resources?Manuscript (Other academic)
  • 52. Woodward, Guy
    et al.
    Gessner, Mark O.
    Giller, Paul S.
    Gulis, Vladislav
    Hladyz, Sally
    Lecerf, Antoine
    Malmqvist, Björn
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    McKie, Brendan G.
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Tiegs, Scott D.
    Cariss, Helen
    Dobson, Mike
    Elosegi, Arturo
    Ferreira, Veronica
    Graca, Manuel A. S.
    Fleituch, Tadeusz
    Lacoursiere, Jean O.
    Nistorescu, Marius
    Pozo, Jesus
    Risnoveanu, Geta
    Schindler, Markus
    Vadineanu, Angheluta
    Vought, Lena B. -M.
    Chauvet, Eric
    Continental-Scale Effects of Nutrient Pollution on Stream Ecosystem Functioning2012In: Science, ISSN 0036-8075, E-ISSN 1095-9203, Vol. 336, no 6087, p. 1438-1440Article in journal (Refereed)
    Abstract [en]

    Excessive nutrient loading is a major threat to aquatic ecosystems worldwide that leads to profound changes in aquatic biodiversity and biogeochemical processes. Systematic quantitative assessment of functional ecosystem measures for river networks is, however, lacking, especially at continental scales. Here, we narrow this gap by means of a pan-European field experiment on a fundamental ecosystem process-leaf-litter breakdown-in 100 streams across a greater than 1000-fold nutrient gradient. Dramatically slowed breakdown at both extremes of the gradient indicated strong nutrient limitation in unaffected systems, potential for strong stimulation in moderately altered systems, and inhibition in highly polluted streams. This large-scale response pattern emphasizes the need to complement established structural approaches (such as water chemistry, hydrogeomorphology, and biological diversity metrics) with functional measures (such as litter-breakdown rate, whole-system metabolism, and nutrient spiraling) for assessing ecosystem health.

12 51 - 52 of 52
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