期刊
SCIENCE OF THE TOTAL ENVIRONMENT
卷 692, 期 -, 页码 441-449出版社
ELSEVIER
DOI: 10.1016/j.scitotenv.2019.07.266
关键词
Nutrient enrichment; Selection effect; Species richness; Alpine grassland; Tibetan Plateau
资金
- National Key Research and Development Program [2016YFC0501803, 2016YFC0502001]
- National Natural Science Foundation of China [41671263, 41703079, 31870406, 31600431]
- Qinghai Innovation Platform Construction Project [2017-ZJ-Y20]
- TULIP Laboratory of Excellence [ANR-10-LABX-41]
- BIOSTASES Advanced Grant
- European Research Council, under the European Union's Horizon 2020 Research and Innovation Program [666971]
The mechanisms underlying nutrient-induced diversity-stability relationships have been examined extensively. However, the effects of nutrient-induced shifts of dominant species on ecosystem stability have rarely been evaluated. We compiled a dataset from a long-term nitrogen (N) and phosphorus (P) enrichment experiment conducted in an alpine grassland on the Tibetan Plateau to test the effects of nutrient-induced shifts of dominant species on stability. Our results show that N enrichment increased synchrony among the dominant species, which contributed to a significant increase in synchrony of the whole community. Meanwhile, N-induced shifts in dominant species composition significantly increased population variability. Increases in species synchrony and population variability resulted in a decline in ecosystem stability. Our study has important implications for progress in understanding the role of plant functional compensation in the stability of ecosystem functions, which is critical for better understanding the mechanisms driving both community assembly and ecosystem functions. (C) 2019 Elsevier B.V. All rights reserved.
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