Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Rapid plant species loss at high rates and at low frequency of N addition in temperate steppe
AU - Zhang, Yunhai
AU - Lu, Xiaotao
AU - Isbell, Forest
AU - Stevens, Carly
AU - Han, Xu
AU - He, Nianpeng
AU - Zhang, Guangming
AU - Yu, Qiang
AU - Huang, Jianhui
AU - Han, Xingguo
PY - 2014/11
Y1 - 2014/11
N2 - Humans are both intentionally (fertilization) and unintentionally (atmospheric nutrient deposition) adding nutrients worldwide. Increasing availability of biologically reactive nitrogen (N) is one of the major drivers of plant species loss. It remains unclear, however, whether plant diversity will be equally reduced by inputs of reactive N coming from either small and frequent N deposition events or large and infrequent N fertilization events. By independently manipulating the rate and frequency of reactive N inputs, our study teases apart these potentially contrasting effects. Plant species richness decreased more quickly at high rates and at low frequency of N addition, which suggests that previous fertilization studies have likely over-estimated the effects of N deposition on plant species loss. N-induced species loss resulted from both acidification and ammonium toxicity. Further study of small and frequent N additions will be necessary to project future rates of plant species loss under increasing aerial N deposition.
AB - Humans are both intentionally (fertilization) and unintentionally (atmospheric nutrient deposition) adding nutrients worldwide. Increasing availability of biologically reactive nitrogen (N) is one of the major drivers of plant species loss. It remains unclear, however, whether plant diversity will be equally reduced by inputs of reactive N coming from either small and frequent N deposition events or large and infrequent N fertilization events. By independently manipulating the rate and frequency of reactive N inputs, our study teases apart these potentially contrasting effects. Plant species richness decreased more quickly at high rates and at low frequency of N addition, which suggests that previous fertilization studies have likely over-estimated the effects of N deposition on plant species loss. N-induced species loss resulted from both acidification and ammonium toxicity. Further study of small and frequent N additions will be necessary to project future rates of plant species loss under increasing aerial N deposition.
KW - acidification
KW - ammonium toxicity
KW - biodiversity
KW - Inner Mongolia
KW - N addition frequency
KW - peak effect
KW - pulse effect
KW - temperate grassland
KW - INNER-MONGOLIA GRASSLANDS
KW - NITROGEN DEPOSITION
KW - TERRESTRIAL ECOSYSTEMS
KW - NUTRIENT ENRICHMENT
KW - BIODIVERSITY LOSS
KW - PHOSPHORUS
KW - INPUTS
KW - SOIL
KW - EUTROPHICATION
KW - DIVERSITY
U2 - 10.1111/gcb.12611
DO - 10.1111/gcb.12611
M3 - Journal article
VL - 20
SP - 3520
EP - 3529
JO - Global Change Biology
JF - Global Change Biology
SN - 1354-1013
IS - 11
ER -