干旱区生态环境知识资源中心(Arid): Nurse rock microclimates significantly buffer exposure to freezing temperature and moderate summer temperature

Arid

DOI	10.1016/j.jaridenv.2020.104140
	Nurse rock microclimates significantly buffer exposure to freezing temperature and moderate summer temperature
	Conver, Joshua L.1,2; Yarwood, Elliott 1; Hetherington, Lucas D.1; Swann, Don E.1
通讯作者	Conver, Joshua L.
来源期刊	JOURNAL OF ARID ENVIRONMENTS
ISSN	0140-1963
EISSN	1095-922X
出版年	2020
卷号	177
英文摘要	Nurse tree canopies mitigate exposure to freezing temperatures that could result in injury or mortality to the saguaro cactus (Carnegiea gigantea). Abiotic objects have been hypothesized to provide similar beneficial microclimates. We used data loggers at 11 nurse rock sites to record daily daytime summer maximum and winter nighttime minimum temperatures at Saguaro National Park, Arizona, to examine the effectiveness of rocks to moderate seasonal temperature extremes in the microclimate. Temperatures at rock sites averaged 2 degrees C warmer than exposed open control sites in winter. We found that the efficiency of rocks to act as insulators significantly increased as temperature at control sites decreased, consistent with studies of tree canopies, and that the insulation effect lasted throughout the night. In summer, rocks reduced exposure to maximum temperatures but did not offer significantly more cooling at higher temperatures. Our results suggest that the protection from freezing temperature offered by rocks in winter is more ecologically beneficial to the saguaro than extreme temperature amelioration during summer in the cold-limited frontiers of the species' range.
英文关键词	Microclimate Data logger Saguaro Public land Sonoran desert
类型	Article
语种	英语
国家	USA
收录类别	SCI-E
WOS记录号	WOS:000525299500011
WOS关键词	SAGUARO CARNEGIEA-GIGANTEA ; CLIMATE-CHANGE IMPACTS ; SONORAN DESERT ; TEHUACAN VALLEY ; GLOBOSE CACTI ; LONG-TERM ; PLANTS ; SOIL ; PATTERNS ; WATER
WOS类目	Ecology ; Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/318758
作者单位	1.Saguaro Natl Pk, 3693 S Old Spanish Trail, Tucson, AZ 85730 USA; 2.Univ Cincinnati, Dept Geog & GIS, 401 Braunstein Hall, Cincinnati, OH 45221 USA
推荐引用方式 GB/T 7714	Conver, Joshua L.,Yarwood, Elliott,Hetherington, Lucas D.,et al. Nurse rock microclimates significantly buffer exposure to freezing temperature and moderate summer temperature[J],2020,177.
APA	Conver, Joshua L.,Yarwood, Elliott,Hetherington, Lucas D.,&Swann, Don E..(2020).Nurse rock microclimates significantly buffer exposure to freezing temperature and moderate summer temperature.JOURNAL OF ARID ENVIRONMENTS,177.
MLA	Conver, Joshua L.,et al."Nurse rock microclimates significantly buffer exposure to freezing temperature and moderate summer temperature".JOURNAL OF ARID ENVIRONMENTS 177(2020).