干旱区生态环境知识资源中心(Arid): Declines in rodent abundance and diversity track regional climate variability in North American drylands

Arid

DOI	10.1111/gcb.15672
	Declines in rodent abundance and diversity track regional climate variability in North American drylands
	Cardenas, Pablo A.; Christensen, Erica; Ernest, S. K. Morgan; Lightfoot, David C.; Schooley, Robert L.; Stapp, Paul; Rudgers, Jennifer A.
通讯作者	Rudgers, JA (corresponding author), Univ New Mexico, Dept Biol, Albuquerque, NM 87131 USA.
来源期刊	GLOBAL CHANGE BIOLOGY
ISSN	1354-1013
EISSN	1365-2486
出版年	2021
英文摘要	Regional long-term monitoring can enhance the detection of biodiversity declines associated with climate change, improving future projections by reducing reliance on space-for-time substitution and increasing scalability. Rodents are diverse and important consumers in drylands, regions defined by the scarcity of water that cover 45% of Earth's land surface and face increasingly drier and more variable climates. We analyzed abundance data for 22 rodent species across grassland, shrubland, ecotone, and woodland ecosystems in the southwestern USA. Two time series (1995-2006 and 2004-2013) coincided with phases of the Pacific Decadal Oscillation (PDO), which influences drought in southwestern North America. Regionally, rodent species diversity declined 20%-35%, with greater losses during the later time period. Abundance also declined regionally, but only during 2004-2013, with losses of 5% of animals captured. During the first time series (wetter climate), plant productivity outranked climate variables as the best regional predictor of rodent abundance for 70% of taxa, whereas during the second period (drier climate), climate best explained variation in abundance for 60% of taxa. Temporal dynamics in diversity and abundance differed spatially among ecosystems, with the largest declines in woodlands and shrublands of central New Mexico and Colorado. Which species were winners or losers under increasing drought and amplified interannual variability in drought depended on ecosystem type and the phase of the PDO. Fewer taxa were significant winners (18%) than losers (30%) under drought, but the identities of winners and losers differed among ecosystems for 70% of taxa. Our results suggest that the sensitivities of rodent species to climate contributed to regional declines in diversity and abundance during 1995-2013. Whether these changes portend future declines in drought-sensitive consumers in the southwestern USA will depend on the climate during the next major PDO cycle.
英文关键词	biodiversity climate change Dipodomys Onychomys Peromyscus small mammal Standardized Precipitation Evapotranspiration Index
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000659691700001
WOS关键词	NET PRIMARY PRODUCTION ; DESERT SMALL MAMMALS ; BOTTOM-UP REGULATION ; COMMUNITY STRUCTURE ; CHIHUAHUAN DESERT ; LONG-TERM ; KANGAROO RATS ; POPULATION-DYNAMICS ; HETEROMYID RODENTS ; GRASSHOPPER MICE
WOS类目	Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
来源机构	New Mexico State University
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/352217
作者单位	[Cardenas, Pablo A.; Rudgers, Jennifer A.] Univ New Mexico, Dept Biol, Albuquerque, NM 87131 USA; [Christensen, Erica] New Mexico State Univ, Jornada Expt Range, Las Cruces, NM 88003 USA; [Ernest, S. K. Morgan] Univ Florida, Dept Wildlife Ecol & Conservat, Gainesville, FL USA; [Lightfoot, David C.] Univ New Mexico, Museum Southwestern Biol, Albuquerque, NM 87131 USA; [Schooley, Robert L.] Univ Illinois, Dept Nat Resources & Environm Sci, Urbana, IL 61801 USA; [Stapp, Paul] Calif State Univ Fullerton, Dept Biol Sci, Fullerton, CA 92634 USA
推荐引用方式 GB/T 7714	Cardenas, Pablo A.,Christensen, Erica,Ernest, S. K. Morgan,et al. Declines in rodent abundance and diversity track regional climate variability in North American drylands[J]. New Mexico State University,2021.
APA	Cardenas, Pablo A..,Christensen, Erica.,Ernest, S. K. Morgan.,Lightfoot, David C..,Schooley, Robert L..,...&Rudgers, Jennifer A..(2021).Declines in rodent abundance and diversity track regional climate variability in North American drylands.GLOBAL CHANGE BIOLOGY.
MLA	Cardenas, Pablo A.,et al."Declines in rodent abundance and diversity track regional climate variability in North American drylands".GLOBAL CHANGE BIOLOGY (2021).