干旱区生态环境知识资源中心(Arid): Responses of biological soil crusts to rehabilitation strategies

Arid

DOI	10.1016/j.jaridenv.2018.10.007
	Responses of biological soil crusts to rehabilitation strategies
	Chock, Taylor 1; Antoninka, Anita J.2; Faist, Akasha M.3; Bowker, Matthew A.2; Belnap, Jayne4 ; Barger, Nichole N.1
通讯作者	Chock, Taylor
来源期刊	JOURNAL OF ARID ENVIRONMENTS
ISSN	0140-1963
EISSN	1095-922X
出版年	2019
卷号	163 页码:77-85
英文摘要	Biological soil crusts (biocrusts) are common to dryland ecosystems and can influence a broad suite of soil ecological functions including stability and surface hydrology. Due to long recovery times following disturbance, there is a clear need for rehabilitation strategies to enhance the recovery of biocrust communities. Essential to biocrust recovery are exopolysaccharides (EPS): secretions comprised mainly of high molecular weight polymers that protect cyanobacteria and other biocrust organisms from harsh environmental conditions. We examined whether biocrust rehabilitation strategies (combinations of inoculation with surface shading and artificial soil stabilization) promote EPS production. To test if responses varied by soil texture, we measured biocrust recovery on two fine-textured soils (clay and sandy clay loam) in a cool desert ecosystem. Shade coupled with inoculum addition resulted in the highest biocrust recovery, especially on clay soils. Independent of rehabilitation strategies, natural recovery of biocrusts occurred more rapidly on clay soils, reflected by greater increases in chlorophyll a (chl a). Chl a, a proxy for cyanobacterial biomass, was correlated to EPS amounts, suggesting that cyanobacteria are significant contributors to EPS production in biocrust development. Despite the role of EPS in biocrust establishment, EPS amounts had negligible effects on soil stability on the fine soil texture.
英文关键词	Exopolysaccharides Cyanobacteria Chlorophyll a Soil stability Restoration
类型	Article
语种	英语
国家	USA
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000459236300010
WOS关键词	DESERT ; EXOPOLYSACCHARIDES ; STABILIZATION ; DISTURBANCE ; MODELS ; ALGAE
WOS类目	Ecology ; Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	United States Geological Survey ; New Mexico State University
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/216725
作者单位	1.Univ Colorado, Dept Ecol & Evolutionary Biol, Boulder, CO 80309 USA; 2.No Arizona Univ, Sch Forestry, Flagstaff, AZ 86011 USA; 3.New Mexico State Univ, Dept Anim & Range Sci, Las Cruces, NM 88003 USA; 4.US Geol Survey, Southwest Biol Sci Ctr, Moab, UT 84532 USA
推荐引用方式 GB/T 7714	Chock, Taylor,Antoninka, Anita J.,Faist, Akasha M.,et al. Responses of biological soil crusts to rehabilitation strategies[J]. United States Geological Survey, New Mexico State University,2019,163:77-85.
APA	Chock, Taylor,Antoninka, Anita J.,Faist, Akasha M.,Bowker, Matthew A.,Belnap, Jayne,&Barger, Nichole N..(2019).Responses of biological soil crusts to rehabilitation strategies.JOURNAL OF ARID ENVIRONMENTS,163,77-85.
MLA	Chock, Taylor,et al."Responses of biological soil crusts to rehabilitation strategies".JOURNAL OF ARID ENVIRONMENTS 163(2019):77-85.