干旱区生态环境知识资源中心(Arid): Aridity drives phylogenetic diversity and species richness patterns of nitrogen-fixing plants in North America

Arid

DOI	10.1111/geb.13535
	Aridity drives phylogenetic diversity and species richness patterns of nitrogen-fixing plants in North America
	Doby, Joshua R.; Li, Daijiang; Folk, Ryan A.; Siniscalchi, Carolina M.; Guralnick, Robert P.
通讯作者	Doby, JR
来源期刊	GLOBAL ECOLOGY AND BIOGEOGRAPHY
ISSN	1466-822X
EISSN	1466-8238
出版年	2022
卷号	31 期号:8 页码:1630-1642
英文摘要	Aim Nitrogen (N)-fixing plants are an important component of global plant communities, but the drivers of N-fixing plant diversity, especially in temperate regions, remain underexplored. Here, we examined broad-scale patterns of N-fixing and non-fixing plant phylogenetic diversity (PD) and species richness (SR) across a wide portion of temperate North America, focusing on relationships with soil N and aridity. We also tested whether exotic species, with and without N-fixing symbiosis, have fewer abiotic limitations compared with native species. Location USA and Puerto Rico. Time period Current. Major taxa studied Vascular plants, focusing on N-fixing groups (orders Fabales, Fagales, Rosales and Cucurbitales). Methods We subset National Ecological Observatory Network (NEON) plant plot data from all sites along two axes (N fixing-non-N fixing and native-exotic), calculating plot-level SR, PD and mean pairwise phylogenetic distance (MPD). We then used linear mixed models to investigate relationships between diversity values and key soil measurements, along with aridity, temperature and fire frequency. Results Aridity was the sole predictor of proportional phylogenetic diversity of N fixers. The SR of N fixers still decreased marginally in arid regions, whereas native N-fixer MPD increased with aridity, indicative of unique lineages of N fixers in the driest conditions, in contrast to native non-N fixers. The SR of both native N fixers and non-N fixers increased in low-N soils. Aridity did not affect SR of exotic non-N fixers, unlike other groups, whereas exotic N fixers showed lower MPD in increasingly high-N soils, suggesting filtering, contrary what was found for native N fixers. Main conclusions Our results suggest that it is not nitrogen, or any soil nutrient, that has the strongest effect on the relative success of N fixers in plant communities. Rather, aridity is the key driver, at least for native species, in line with empirical results from other biomes and increased understanding of N fixation as a key mechanism to avoid water loss.
英文关键词	abiotic drivers aridity exotic species nitrogen-fixing plants phylogenetic diversity temperate region
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000800802500001
WOS关键词	TREE ABUNDANCE ; USE EFFICIENCY ; LEAF NITROGEN ; LEGUMES
WOS类目	Ecology ; Geography, Physical
WOS研究方向	Environmental Sciences & Ecology ; Physical Geography
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392972
推荐引用方式 GB/T 7714	Doby, Joshua R.,Li, Daijiang,Folk, Ryan A.,et al. Aridity drives phylogenetic diversity and species richness patterns of nitrogen-fixing plants in North America[J],2022,31(8):1630-1642.
APA	Doby, Joshua R.,Li, Daijiang,Folk, Ryan A.,Siniscalchi, Carolina M.,&Guralnick, Robert P..(2022).Aridity drives phylogenetic diversity and species richness patterns of nitrogen-fixing plants in North America.GLOBAL ECOLOGY AND BIOGEOGRAPHY,31(8),1630-1642.
MLA	Doby, Joshua R.,et al."Aridity drives phylogenetic diversity and species richness patterns of nitrogen-fixing plants in North America".GLOBAL ECOLOGY AND BIOGEOGRAPHY 31.8(2022):1630-1642.