Journal
NATURE COMMUNICATIONS
Volume 7, Issue -, Pages -Publisher
NATURE RESEARCH
DOI: 10.1038/ncomms11973
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Funding
- National Science Foundation [DEB 0078325, DEB 0743778, OIA-1301789]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
- Jiangsu Specially-Appointed Professors Program
- Office Of The Director
- Office of Integrative Activities [1301789] Funding Source: National Science Foundation
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Past global change studies have identified changes in species diversity as a major mechanism regulating temporal stability of production, measured as the ratio of the mean to the standard deviation of community biomass. However, the dominant plant functional group can also strongly determine the temporal stability. Here, in a grassland ecosystem subject to 15 years of experimental warming and hay harvest, we reveal that warming increases while hay harvest decreases temporal stability. This corresponds with the biomass of the dominant C-4 functional group being higher under warming and lower under hay harvest. As a secondary mechanism, biodiversity also explains part of the variation in temporal stability of production. Structural equation modelling further shows that warming and hay harvest regulate temporal stability through influencing both temporal mean and variation of production. Our findings demonstrate the joint roles that dominant plant functional group and biodiversity play in regulating the temporal stability of an ecosystem under global change.
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