10.5061/DRYAD.PG4F4QRRG
Wang, Xiaoyi
0000-0003-3323-1051
Nanjing Agricultural University
Yan, Xuebin
Nanjing Agricultural University
Huang, Kailing
Nanjing Agricultural University
Luo, Xi
Nanjing Agricultural University
Zhang, Yuanyuan
Nanjing Agricultural University
Zhou, Luyao
Nanjing Agricultural University
Yang, Fei
Nanjing Agricultural University
Xu, Xiaohong
Nanjing Agricultural University
Zhou, Xianhui
Lanzhou University
Niu, Kechang
Nanjing University
Guo, Hui
Nanjing Agricultural University
Data from: Nitrogen enrichment and warming shift community functional
composition via distinct mechanisms: the role of intraspecific trait
variability and species turnover
Dryad
dataset
2022
FOS: Natural sciences
2022-02-02T00:00:00Z
2022-02-02T00:00:00Z
en
https://doi.org/10.1111/1365-2435.14012
59854 bytes
5
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
1. Global change factors may shift community functional composition by
driving species turnover (species occurrence and species relative
abundance) and intraspecific trait variability. However, their relative
contribution in determining the functional response of community to global
change, especially nitrogen enrichment and warming, remains unclear. 2. We
conducted a fully factorial field experiment in a Tibetan alpine meadow to
examine responses of plant community functional composition to nitrogen
enrichment and warming by quantifying seven plant functional traits in
each plot. Using the sum of squares decomposition, we further disentangled
the relative contribution of intraspecific trait variability and species
turnover to changes in community functional composition. 3. We found that
nitrogen enrichment caused a shift of plant community toward a more
resource-acquisitive strategy, while warming resulted in a shift toward a
more resource-conservative strategy. Plant intraspecific trait variability
controls shifts in community functional composition in response to
nitrogen enrichment, whereas species turnover (especially change in
species relative abundance) mainly explains warming-induced shifts.
Nitrogen enrichment and warming did not show significant interactive
effects on plant functional composition. 4. These findings suggest that
nitrogen enrichment and warming can alter community functional composition
of alpine meadow through distinct mechanisms. Plant intraspecific trait
variability confers functional resilience of Tibetan alpine meadows under
nitrogen enrichment, but warming could induce significant turnover of
species that pronouncedly impacts community functioning in this highland
ecosystem.