Effects of elevation and nitrogen and phosphorus fertilization on plant defence compounds in subarctic tundra heath vegetation
نویسندگان
چکیده
fertilization on plant defence compounds in subarctic tundra heath vegetation Jonathan R. De Long*, Maja K. Sundqvist, Michael J. Gundale, Reiner Giesler and David A. Wardle Department of Forest Ecology & Management, Swedish University of Agricultural Sciences, SE-901 83 Ume a, Sweden; Department of Ecology and Environmental Sciences, Ume a University, SE-901 87 Ume a, Sweden; Center for Macroecology, Evolution and Climate, The Natural History Museum of Denmark, University of Copenhagen, 2100 Copenhagen, Denmark; and Climate Impacts Research Centre, Department of Ecology and Environmental Sciences, Ume a University, SE-981 07 Abisko, Sweden
منابع مشابه
Plant and microbial responses to nitrogen and phosphorus addition across an elevational gradient in subarctic tundra.
Temperature and nutrients are major limiting factors in subarctic tundra. Experimental manipulation of nutrient availability along elevational gradients (and thus temperature) can improve our understanding of ecological responses to climate change. However, no study to date has explored impacts of nutrient addition along a tundra elevational gradient, or across contrasting vegetation types alon...
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Phosphorus (P) is an important macronutrient in arctic and subarctic tundra and its bioavailability is regulated by the mineralization of organic P. Temperature is likely to be an important control on P bioavailability, although effects may differ across contrasting plant communities with different soil properties. We used an elevational gradient in northern Sweden that included both heath and ...
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Elevational gradients are increasingly recognized as a valuable tool for understanding how community and ecosystem properties respond to climatic factors, but little is known about how plant traits and their effects on ecosystem processes respond to elevation. We studied the response of plant leaf and litter traits, and litter decomposability across a gradient of elevation, and thus temperature...
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Nitrogen availability is considered to be a key limiting factor for plant growth in arctic tundra. Freeze-thaw cycles, which can produce patterned-ground features, may also limit the establishment and growth of arctic plants. In this experiment, we fertilized nonsorted circles, a type of patterned-ground feature, and the surrounding more stable vegetation in moist nonacidic tundra of northern A...
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