干旱区生态环境知识资源中心(Arid): N:P stoichiometric changes via species turnover in arid versus saline desert environments

Arid

DOI	10.1002/ece3.6395
	N:P stoichiometric changes via species turnover in arid versus saline desert environments
	Gong, Yan-Ming 1; Ling, Hong-Bo 1; Chen, Yue 2; Cao, Jing 2; Guo, Zhen-Jie 2; Lv, Guang-Hui2
通讯作者	Lv, Guang-Hui
来源期刊	ECOLOGY AND EVOLUTION
ISSN	2045-7758
出版年	2020
卷号	10 期号:13 页码:6636-6645
英文摘要	Aridity and salinity have a key role in driving physiological and ecological processes in desert ecosystems. However, how community-scale foliar nutrients respond to aridity and salinity, and how these responses might vary with community composition along aridity and salinity gradients is unclear. We hypothesize that the response will be a shift in community stoichiometric values resulting from nutrient variability of shared species and unique species (site-specific species), but little research has addressed the relative contribution of either component. We analyzed the community-scale stoichiometric response of a desert community of perennial plants along an aridity and salinity transect by focusing on foliar nitrogen (N) and phosphorous (P) concentrations and N:P ratios. After evaluating the shared and unique species variability, we determined their relative contribution to the community stoichiometric response to aridity and salinity, reflected by changes in nonweighted and weighted community-average values. Community-scale stoichiometry decreased significantly under aridity and salinity, with significantly consistent changes in nonweighted and weighted community-average stoichiometry for most shared and unique species measurements. The relative contribution of unique species shifts to the changes in community stoichiometry was greater (15%-77%) than the relative contribution of shared species shifts (7%-45%), excluding the change in weighted P concentration under aridity. Thus, the shifts of unique species amplified the community stoichiometric response to environmental changes. Synthesis. These results highlighted the need for a more in-depth consideration of shared and unique species variability to understand and predict the effects of environmental change on the stoichiometry of plant communities. Although variation in community stoichiometry can be expected under extreme aridity and salinity conditions, changes of unique species could be a more important driver of the stoichiometric response of plant communities.
英文关键词	community stoichiometry extreme environment intraspecies variation nutrient concentration species turnover
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000536193400001
WOS关键词	PLANT FUNCTIONAL TRAITS ; INTRASPECIFIC VARIATION ; BIOLOGICAL STOICHIOMETRY ; SUPPLY RATIO ; NITROGEN ; RESPONSES ; WATER ; LEAF ; PHOSPHORUS ; VARIABILITY
WOS类目	Ecology ; Evolutionary Biology
WOS研究方向	Environmental Sciences & Ecology ; Evolutionary Biology
来源机构	中国科学院新疆生态与地理研究所 ; 新疆大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319198
作者单位	1.Chinese Acad Sci, State Key Lab Desert & Oasis Ecol, Xinjiang Inst Ecol & Geog, Urumqi, Peoples R China; 2.Xinjiang Univ, Xinjiang Key Lab Oasis Ecol, Urumqi, Peoples R China
推荐引用方式 GB/T 7714	Gong, Yan-Ming,Ling, Hong-Bo,Chen, Yue,et al. N:P stoichiometric changes via species turnover in arid versus saline desert environments[J]. 中国科学院新疆生态与地理研究所, 新疆大学,2020,10(13):6636-6645.
APA	Gong, Yan-Ming,Ling, Hong-Bo,Chen, Yue,Cao, Jing,Guo, Zhen-Jie,&Lv, Guang-Hui.(2020).N:P stoichiometric changes via species turnover in arid versus saline desert environments.ECOLOGY AND EVOLUTION,10(13),6636-6645.
MLA	Gong, Yan-Ming,et al."N:P stoichiometric changes via species turnover in arid versus saline desert environments".ECOLOGY AND EVOLUTION 10.13(2020):6636-6645.