干旱区生态环境知识资源中心(Arid): Guano stable isotopic evidence of Anthropocene climate change influence on aridity and vegetation dynamics

Arid

DOI	10.1016/j.ecolind.2022.109710
	Guano stable isotopic evidence of Anthropocene climate change influence on aridity and vegetation dynamics
	Cleary, Daniel M.; Stepchinski, Leanne; Bertetti, F. Paul; Nunu, Rebecca; Green, Ronald T.; Onac, Bogdan P.
通讯作者	Onac, BP
来源期刊	ECOLOGICAL INDICATORS
ISSN	1470-160X
EISSN	1872-7034
出版年	2022
卷号	145
英文摘要	A 2.8 m-long core of cave bat guano was obtained from an excavated pit within Bracken Cave (Texas, USA) and analyzed for 813C and 815N. Radiocarbon dating of the core indicated that guano deposition occurred between 1974-1989 and 1998-2016 CE. The hiatus between 1989 and 1998 CE was interpreted to be related to docu-mented mining activities during this interval. The average Suess-corrected 813C values for the entire series (-19.7 +/- 1.0 %o) suggest that insects ingested by the bats had a diet incorporating both C3 and C4 plants. The proportion of each appeared to be dependent on the sensitivity of vegetation to prolonged and frequent droughts. Two documented La Nin similar to a events centered around 2008 and 2011 CE occurred contemporaneously with intervals of higher 813C values. The drought recorded in 2006 may have corresponded with foraging of insects located over C3 vegetation, which resulted in lower 813C (-22.0 %o). 815N values agree well with records of drought and precipitation in Texas, suggesting an aridity control on the local nitrogen cycle. The highest 815N values occurred during periods of a weaker North American Monsoon (1977 and 1982 CE). Higher 815N values also occur at 2006, 2009, and 2012 CE, corresponding with years of reduced precipitation locally and throughout the region. This study further demonstrates that guano 813C and 815N records can provide paleo-information with respect to climatic influence on the environment in semi-arid regions.
英文关键词	delta 13C delta 15N Cave Bat Drought Texas
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000935575000004
WOS关键词	FREE-TAILED BATS ; SPELEOTHEM CALCITE ; NITROGEN ISOTOPES ; CARBON ISOTOPES ; GRAND-CANYON ; SOUTH-AFRICA ; CAVE GUANO ; RECORD ; DELTA-N-15 ; RADIOCARBON
WOS类目	Biodiversity Conservation ; Environmental Sciences
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392354
推荐引用方式 GB/T 7714	Cleary, Daniel M.,Stepchinski, Leanne,Bertetti, F. Paul,et al. Guano stable isotopic evidence of Anthropocene climate change influence on aridity and vegetation dynamics[J],2022,145.
APA	Cleary, Daniel M.,Stepchinski, Leanne,Bertetti, F. Paul,Nunu, Rebecca,Green, Ronald T.,&Onac, Bogdan P..(2022).Guano stable isotopic evidence of Anthropocene climate change influence on aridity and vegetation dynamics.ECOLOGICAL INDICATORS,145.
MLA	Cleary, Daniel M.,et al."Guano stable isotopic evidence of Anthropocene climate change influence on aridity and vegetation dynamics".ECOLOGICAL INDICATORS 145(2022).