干旱区生态环境知识资源中心(Arid): Latitudinal and environmental patterns of species richness in lizards and snakes across continental North America

Arid

DOI	10.1111/jbi.13996
	Latitudinal and environmental patterns of species richness in lizards and snakes across continental North America
	Whiting, Evan T.; Fox, David L.
通讯作者	Whiting, ET
来源期刊	JOURNAL OF BIOGEOGRAPHY
ISSN	0305-0270
EISSN	1365-2699
英文摘要	Aim Little is known about the contributions of individual clades to the broader latitudinal diversity gradients of lizards and snakes in North America. Additionally, the environmental variables underpinning these patterns have not been extensively studied, nor have the relationships between squamate species richness and biome variety, a proxy for habitat heterogeneity. Here, we deconstruct the latitudinal diversity gradient of squamates and investigate lizard and snake species richness in relation to environmental gradients and biomes across continental North America. Location North America, excluding islands. Taxon Squamata (lizards and snakes). Methods We collated a suite of environmental variables (n = 10) and squamate species ranges (n = 1,152) in an equal-area grid system (100 x 100 km cells) spanning continental North America. We deconstructed the latitudinal diversity gradient of squamates and examined species richness patterns for all lizards, all snakes and several individual squamate clades. We used multiple linear regressions to determine which environmental factors are most important for each squamate clade. Finally, we documented species richness within biomes and tested for correlations between species richness and biome variety. Results Squamates exhibit a strong latitudinal diversity gradient across continental North America. Snakes are more widespread and have a stronger gradient than lizards. Our multiple linear regression results indicate strong associations between species richness and environmental variables for all individual squamate clades analysed; temperature variables are strongly positively correlated with species richness. Biome variety is more strongly correlated with lizard species richness than snake species richness. Squamates are most species-rich in tropical/subtropical forests, deserts and mangroves. Main conclusions Most snake clades in North America exhibit strong latitudinal diversity gradients, but only two lizard clades, Dactyloidae (anoles) and Gekkota (geckos), display strong gradients and thus drive the overall lizard pattern. Squamate clades differ in their responses to environmental gradients, as reflected by their species richness patterns, with warmer climates generally harboring more species. Lizards are more strongly associated with habitat heterogeneity than snakes are, consistent with results from previous studies. Squamates in more rapidly shifting biomes (e.g. deserts, mangroves) may face a greater risk of extinction from impending climate change.
英文关键词	biogeography biomes climate habitat heterogeneity latitudinal diversity gradients lizards North America snakes species richness Squamata
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000583618500001
WOS关键词	SQUAMATE REPTILES ; BIODIVERSITY GRADIENT ; DIVERSITY GRADIENT ; SCALE PATTERNS ; CLIMATE-CHANGE ; EVOLUTION ; ECOLOGY ; MAMMALS ; BIOGEOGRAPHY ; EXTINCTION
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/2XILL650/328414
作者单位	[Whiting, Evan T.; Fox, David L.] Univ Minnesota, Dept Earth & Environm Sci, 116 Church St SE, Minneapolis, MN 55455 USA
推荐引用方式 GB/T 7714	Whiting, Evan T.,Fox, David L.. Latitudinal and environmental patterns of species richness in lizards and snakes across continental North America[J].
APA	Whiting, Evan T.,&Fox, David L..
MLA	Whiting, Evan T.,et al."Latitudinal and environmental patterns of species richness in lizards and snakes across continental North America".JOURNAL OF BIOGEOGRAPHY