Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.jaridenv.2018.10.007 |
Responses of biological soil crusts to rehabilitation strategies | |
Chock, Taylor1; 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. |
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