Elevated CO and water addition enhance nitrogen turnover in grassland plants with implications for temporal stability.
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ID: 108320
2018
Temporal variation in soil nitrogen (N) availability affects growth of grassland communities that differ in their use and reuse of N. In a 7-year-long climate change experiment in a semi-arid grassland, the temporal stability of plant biomass production varied with plant N turnover (reliance on externally acquired N relative to internally recycled N). Species with high N turnover were less stable in time compared to species with low N turnover. In contrast, N turnover at the community level was positively associated with asynchrony in biomass production, which in turn increased community temporal stability. Elevated CO and summer irrigation, but not warming, enhanced community N turnover and stability, possibly because treatments promoted greater abundance of species with high N turnover. Our study highlights the importance of plant N turnover for determining the temporal stability of individual species and plant communities affected by climate change.
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dijkstra2018elevatedecology
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| Authors | Dijkstra, Feike A;Carrillo, Yolima;Blumenthal, Dana M;Mueller, Kevin E;LeCain, Dan R;Morgan, Jack A;Zelikova, Tamara J;Williams, David G;Follett, Ronald F;Pendall, Elise; |
| Journal | Ecology letters |
| Year | 2018 |
| DOI | 10.1111/ele.12935 |
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