Arid
DOI10.1080/01490450802153033
Geomicrobiological changes in two ephemeral desert playa lakes in the Western United States
Costa, Kyle C.1; Hallmark, Joy1; Navarro, Jason B.1; Hedlund, Brian P.1; Moser, Duane P.2; Labahn, Stephanie2; Soukup, Debbie3
通讯作者Hedlund, Brian P.
来源期刊GEOMICROBIOLOGY JOURNAL
ISSN0149-0451
EISSN1521-0529
出版年2008
卷号25期号:5页码:250-259
英文摘要

The geochemistry and microbiology of two ephemeral playa lakes in the Western United States, Surprise Valley Alkali Lake (SVAL) and Eldorado Playa (EP), were examined over one wetting cycle, revealing dramatic temporal changes in suspended mineralogy, aqueous chemistry, and bacterial populations. In SVAL the predominant suspended mineral changed from smectite to vermiculite and clinoptilolite, which led to a depletion of soluble Mg2+. Nitrate became depleted in both playas as a result of biological nitrogen demand imparted by unusually dense microbial communities reaching similar to 1 x 10(8) cultivable heterotrophs per ml of water. One hundred eighty eight bacterial isolates were obtained, representing sixty phylotypes and four phyla: Actinobacteria, Bacteroidetes, Proteobacteria, and Firmicutes. Phylogenetic analyses suggested that the microbial communities reflected different phases of succession, with SVAL changing from a diverse community with abundant Yonghaparkia to a less diverse late summer community with abundant Bacteroidetes and Proteobacteria such as Loktanella, Rhodobaca, Saccharospirillum, Flexibacter, and phylogenetically novel members of the Flexibacteriaceae. In EP, a diverse assemblage of bacteria often associated with soils was replaced very quickly by a much less even community dominated by Yonghaparkia, Sandarakinorhabdus, and relatives of Belliella baltica. Strikingly, the early summer microbial community from SVAL was not significantly different from the EP community that developed within one week of flooding, even though these playas are almost 1000 km apart, whereas sympatric communities in different phases of succession were different. To our knowledge, this is one of the first geomicrobiological studies of a recharge playa, the dominant playa type worldwide.


英文关键词playa Great Basin Mojave alkaline Nevada
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000257082100004
WOS关键词RIBOSOMAL-RNA GENE ; MICROBIAL DIVERSITY ; CLAY-MINERALS ; KEBRIT DEEP ; SODA LAKES ; RED-SEA ; BACTERIA ; SEDIMENTS ; CALIFORNIA ; BACTERIOPLANKTON
WOS类目Environmental Sciences ; Geosciences, Multidisciplinary
WOS研究方向Environmental Sciences & Ecology ; Geology
来源机构Desert Research Institute
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/157427
作者单位1.Univ Nevada, Sch Life Sci, Las Vegas, NV 89154 USA;
2.Desert Res Inst, Div Earth & Ecosyst Sci, Las Vegas, NV 89119 USA;
3.Univ Nevada, Dept Geosci, Las Vegas, NV 89154 USA
推荐引用方式
GB/T 7714
Costa, Kyle C.,Hallmark, Joy,Navarro, Jason B.,et al. Geomicrobiological changes in two ephemeral desert playa lakes in the Western United States[J]. Desert Research Institute,2008,25(5):250-259.
APA Costa, Kyle C..,Hallmark, Joy.,Navarro, Jason B..,Hedlund, Brian P..,Moser, Duane P..,...&Soukup, Debbie.(2008).Geomicrobiological changes in two ephemeral desert playa lakes in the Western United States.GEOMICROBIOLOGY JOURNAL,25(5),250-259.
MLA Costa, Kyle C.,et al."Geomicrobiological changes in two ephemeral desert playa lakes in the Western United States".GEOMICROBIOLOGY JOURNAL 25.5(2008):250-259.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Costa, Kyle C.]的文章
[Hallmark, Joy]的文章
[Navarro, Jason B.]的文章
百度学术
百度学术中相似的文章
[Costa, Kyle C.]的文章
[Hallmark, Joy]的文章
[Navarro, Jason B.]的文章
必应学术
必应学术中相似的文章
[Costa, Kyle C.]的文章
[Hallmark, Joy]的文章
[Navarro, Jason B.]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。