Arid
DOI10.1111/j.1574-6941.2007.00351.x
Cyanobacterial ecology across environmental gradients and spatial scales in China’s hot and cold deserts
Warren-Rhodes, Kimberley A.; Rhodes, Kevin L.; Boyle, Linda Ng; Pointing, Stephen B.; Chen, Yong; Liu, Shuangjiang; Zhuo, Peijin; McKay, Christopher P.
通讯作者Warren-Rhodes, Kimberley A.
来源期刊FEMS MICROBIOLOGY ECOLOGY
ISSN0168-6496
EISSN1574-6941
出版年2007
卷号61期号:3页码:470-482
英文摘要

Lithic photoautotrophic communities function as principal primary producers in the world’s driest deserts, yet many aspects of their ecology remain unknown. This is particularly true for Asia, where some of the Earth’s oldest and driest deserts occur. Using methods derived from plant landscape ecology, we measured the abundance and spatial distribution of cyanobacterial colonization on quartz stony pavement across environmental gradients of rainfall and temperature in the isolated Taklimakan and Qaidam Basin deserts of western China. Colonization within available habitat ranged from 0.37 +/- 0.16% to 12.6 +/- 1.8%, with cold dry desert sites exhibiting the lowest abundance. Variation between sites was most strongly correlated with moisture-related variables and was independent of substrate availability. Cyanobacterial communities were spatially aggregated at multiple scales in patterns distinct from the underlying rock pattern. Site-level differences in cyanobacterial spatial pattern (e.g. mean inter-patch distance) were linked with rainfall, whereas patchiness within sites was correlated with local geology (greater colonization frequency of large rocks) and biology (dispersal during rainfall). We suggest that cyanobacterial patchiness may also in part be self-organized - that is, an outcome of soil water-biological feedbacks. We propose that landscape ecology concepts and models linking desert vegetation, biological feedbacks and ecohydrological processes are applicable to microbial communities.


英文关键词hypolithic photoautotrophs hyperarid desert landscape ecology patchiness trigger-transfer-response-pulse framework
类型Article
语种英语
国家USA ; Peoples R China
收录类别SCI-E
WOS记录号WOS:000248961900008
WOS关键词SEMIARID LANDSCAPES ; CONCEPTUAL-MODEL ; SOIL-MOISTURE ; DIVERSITY ; CHROOCOCCIDIOPSIS ; DESERTIFICATION ; MICROORGANISMS ; COLONIZATION ; CONTINUUM ; ECOSYSTEM
WOS类目Microbiology
WOS研究方向Microbiology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/154203
作者单位(1)NASA, Ames Res Ctr, Moffett Field, CA 94035 USA;(2)Univ Hawaii, Coll Agr Forestry & Nat Resource Management, Hilo, HI 96720 USA;(3)Univ Iowa, Dept Mech & Ind Engn, Iowa City, IA USA;(4)Univ Hong Kong, Sch Biol Sci, Hong Kong, Hong Kong, Peoples R China;(5)Chinese Acad Sci, Inst Microbiol, Beijing, Peoples R China
推荐引用方式
GB/T 7714
Warren-Rhodes, Kimberley A.,Rhodes, Kevin L.,Boyle, Linda Ng,等. Cyanobacterial ecology across environmental gradients and spatial scales in China’s hot and cold deserts[J],2007,61(3):470-482.
APA Warren-Rhodes, Kimberley A..,Rhodes, Kevin L..,Boyle, Linda Ng.,Pointing, Stephen B..,Chen, Yong.,...&McKay, Christopher P..(2007).Cyanobacterial ecology across environmental gradients and spatial scales in China’s hot and cold deserts.FEMS MICROBIOLOGY ECOLOGY,61(3),470-482.
MLA Warren-Rhodes, Kimberley A.,et al."Cyanobacterial ecology across environmental gradients and spatial scales in China’s hot and cold deserts".FEMS MICROBIOLOGY ECOLOGY 61.3(2007):470-482.
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