干旱区生态环境知识资源中心(Arid): Improving field success of biocrust rehabilitation materials: hardening the organisms or softening the environment?

Arid

DOI	10.1111/rec.12965
	Improving field success of biocrust rehabilitation materials: hardening the organisms or softening the environment?
	Bowker, Matthew A.1; Antoninka, Anita J.1; Chuckran, Peter F.1,2
通讯作者	Bowker, Matthew A.
来源期刊	RESTORATION ECOLOGY
ISSN	1061-2971
EISSN	1526-100X
出版年	2020
卷号	28 页码:S177-S186
英文摘要	Drylands are a widely degraded biome characterized by low productivity and high abiotic stress. Biological soil crust (biocrust) inoculants hold promise as a rehabilitation material in drylands, useful for boosting ecosystem functions including stabilization of eroding soil surfaces. However, biocrust materials cultivated ex situ by humans inconsistently establish under field conditions. We tested two approaches aimed at improving field establishment of biocrust inoculum: exposing the organisms within the inoculum to abiotic stress in an attempt to harden them, and applying habitat ameliorations intended to reduce the stressfulness of the environment. We hypothesized that both approaches in concert would lead to the most consistent field establishment of biocrusts. Overall, addition of biocrust inoculum did enhance biocrust establishment over the 1.5-year duration of the study but did not result in full recovery. Generally, hardened biocrust inoculum performed no better than inoculum that was not hardened, although one indicator (chlorophyll a) was enhanced by addition of hardened inoculum in some circumstances. Temporary irrigation was initially an effective habitat amelioration but had no effect on biocrust establishment by 1.5 years. In contrast, application of jute net to the soil surface promoted biocrust establishment both in synergy with and in the absence of inoculum addition. We hypothesize that jute net stabilizes the soil surface, reduces abiotic stress, and enhances resource availability, overcoming barriers to establishment of biocrusts. Currently, there is broad support for the efficacy of habitat amelioration approaches in biocrust rehabilitation, but effective hardening techniques remain elusive.
英文关键词	bio-inoculants biological soil crust cyanobacteria dryland erosion control moss soil aggregation
类型	Article
语种	英语
国家	USA
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000478201400001
WOS关键词	BIOLOGICAL SOIL CRUSTS ; MOSS BIOCRUSTS ; DESERT ; SAND ; CYANOBACTERIAL ; STABILIZATION ; STRESS ; ESTABLISHMENT ; RESTORATION ; CULTIVATION
WOS类目	Ecology
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/2XILL650/218462
作者单位	1.No Arizona Univ, Sch Forestry, 200 E Pine Knoll Dr,Box 15018, Flagstaff, AZ 86011 USA; 2.No Arizona Univ, Ctr Ecosyst Sci & Soc, Box 5620, Flagstaff, AZ 86011 USA
推荐引用方式 GB/T 7714	Bowker, Matthew A.,Antoninka, Anita J.,Chuckran, Peter F.. Improving field success of biocrust rehabilitation materials: hardening the organisms or softening the environment?[J],2020,28:S177-S186.
APA	Bowker, Matthew A.,Antoninka, Anita J.,&Chuckran, Peter F..(2020).Improving field success of biocrust rehabilitation materials: hardening the organisms or softening the environment?.RESTORATION ECOLOGY,28,S177-S186.
MLA	Bowker, Matthew A.,et al."Improving field success of biocrust rehabilitation materials: hardening the organisms or softening the environment?".RESTORATION ECOLOGY 28(2020):S177-S186.