干旱区生态环境知识资源中心(Arid): Water and nitrogen shape winter annual plant diversity and community composition in near-urban Sonoran Desert preserves

Arid

DOI	10.1002/ecm.1450
	Water and nitrogen shape winter annual plant diversity and community composition in near-urban Sonoran Desert preserves
	Wheeler, Megan M.; Collins, Scott L.; Grimm, Nancy B.; Cook, Elizabeth M.; Clark, Christopher; Sponseller, Ryan A.; Hall, Sharon J.
通讯作者	Wheeler, MM (corresponding author), Arizona State Univ, Sch Life Sci, POB 874501, Tempe, AZ 85287 USA.
来源期刊	ECOLOGICAL MONOGRAPHS
ISSN	0012-9615
EISSN	1557-7015
出版年	2021
英文摘要	Increased nitrogen (N) deposition threatens global biodiversity, but its effects in arid urban ecosystems are not well studied. In addition to altered N availability, urban environments also experience increases in other pollutants, decreased population connectivity, and altered biotic interactions, which can further impact biodiversity. In deserts, annual plant communities make up most of the plant diversity, support wildlife, and contribute to nutrient cycling and ecosystem processes. Functional trade-offs allowing coexistence of a diversity of annual plant species are well established, but maintenance of diversity in urban conditions and with increased availability of limiting nutrients has not been explored. We conducted a 13-yr N and phosphorus (P) addition experiment in Sonoran Desert preserves in and around Phoenix, Arizona, USA to test how nutrient availability interacts with growing season precipitation, urban location, and microhabitat to affect winter annual plant diversity. Using structural equation modeling and generalized linear mixed modeling, we found that annual plant taxonomic diversity was significantly reduced in N-enriched and urban plots. Water availability in both current and previous growing seasons impacted annual plant diversity, with significant interaction effects showing increased diversity in wetter years and greater responsiveness of the community to water following a wet year. However, there were no significant interactions between N enrichment and water availability, urban location, or microhabitat. Lowered diversity in urban preserves may be partly attributable to increased urban N deposition. Changes in biodiversity of showy species like annual wildflowers in urban preserves can have important implications for connections between urban residents and nature, and reduced diversity and community restructuring with N enrichment represents a challenge for future preservation of aridland biodiversity.
英文关键词	Arizona biodiversity CAP LTER desert annual plants fertilization nitrogen plant community composition species richness
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000634726900001
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
来源机构	Arizona State University
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/352126
作者单位	[Wheeler, Megan M.; Grimm, Nancy B.; Hall, Sharon J.] Arizona State Univ, Sch Life Sci, POB 874501, Tempe, AZ 85287 USA; [Collins, Scott L.] Univ New Mexico, Dept Biol, 1 Univ New Mexico,MSC03 2020, Albuquerque, NM 87131 USA; [Cook, Elizabeth M.] Barnard Coll, Dept Environm Sci, 3009 Broadway, New York, NY 10027 USA; [Clark, Christopher] US EPA, Off Res & Dev, 1200 Penn Ave, Washington, DC 20004 USA; [Sponseller, Ryan A.] Umea Univ, Dept Ecol & Environm Sci, SE-90187 Umea, Sweden
推荐引用方式 GB/T 7714	Wheeler, Megan M.,Collins, Scott L.,Grimm, Nancy B.,et al. Water and nitrogen shape winter annual plant diversity and community composition in near-urban Sonoran Desert preserves[J]. Arizona State University,2021.
APA	Wheeler, Megan M..,Collins, Scott L..,Grimm, Nancy B..,Cook, Elizabeth M..,Clark, Christopher.,...&Hall, Sharon J..(2021).Water and nitrogen shape winter annual plant diversity and community composition in near-urban Sonoran Desert preserves.ECOLOGICAL MONOGRAPHS.
MLA	Wheeler, Megan M.,et al."Water and nitrogen shape winter annual plant diversity and community composition in near-urban Sonoran Desert preserves".ECOLOGICAL MONOGRAPHS (2021).