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  1. No Access

    Article

    Isotopic evidence for oligotrophication of terrestrial ecosystems

    Human societies depend on an Earth system that operates within a constrained range of nutrient availability, yet the recent trajectory of terrestrial nitrogen (N) availability is uncertain. Examining patterns ...

    Joseph M. Craine, Andrew J. Elmore, Lixin Wang… in Nature Ecology & Evolution (2018)

  2. No Access

    Article

    Responses of soil extracellular enzyme activities to experimental warming and CO2 enrichment at the alpine treeline

    Climate warming and elevated CO2 can modify nutrient cycling mediated by enzymes in soils, especially in cold-limited ecosystems with a low availability of nutrients and a high temperature sensitivity of decompos...

    Rômulo C. Souza, Emily F. Solly, Melissa A. Dawes, Frank Graf… in Plant and Soil (2017)

  3. No Access

    Article

    An alpine treeline in a carbon dioxide-rich world: synthesis of a nine-year free-air carbon dioxide enrichment study

    We evaluated the impacts of elevated CO2 in a treeline ecosystem in the Swiss Alps in a 9-year free-air CO2 enrichment (FACE) study. We present new data and synthesize plant and soil results from the entire exper...

    Melissa A. Dawes, Frank Hagedorn, Ira Tanya Handa, Kathrin Streit, Alf Ekblad… in Oecologia (2013)