Arid
DOI10.1007/s00300-013-1322-8
The short-term effects of surface soil disturbance on soil bacterial community structure at an experimental site near Scott Base, Antarctica
O’Neill, Tanya1; Balks, Megan1; Stevenson, Bryan2; Lopez-Martinez, Jeronimo3; Aislabie, Jackie2; Rhodes, Pip2
通讯作者O’Neill, Tanya
来源期刊POLAR BIOLOGY
ISSN0722-4060
出版年2013
卷号36期号:7页码:985-996
英文摘要

Humans are visiting Antarctica in increasing numbers, and the ecological effect of rapid soil habitat alteration due to human-induced physical disturbance is not well understood. An experimental soil disturbance trial was set up near Scott Base on Ross Island, to investigate the immediate and short-term changes to bacterial community structure, following surface soil disturbance. Three blocks, each comprising an undisturbed control, and an area disturbed by removing the top 2 cm of soil, were sampled over a time series (0, 7, 14, 21, and 35 days), to investigate changes to bacterial community structure using DNA profiling by terminal restriction fragment length polymorphism. The simulated disturbance did not cause any major shifts in the structure of the bacterial communities over the 35-day sampling period. Ordination showed that the bacterial community composition correlated strongly with soil EC (R-2 = 0.55) and soil pH (R-2 = 0.67), rather than the removal of the top 2 cm of surface material. Although the replicate blocks were visually indistinguishable from one another, high local spatial variability of soil chemical properties was found at the study site and different populations of bacterial communities occurred within 2 m of one another, within the same landscape unit. Given the current knowledge of the drivers of bacterial community structure, that is, soil EC, soil pH, and soil moisture content, a follow-up investigation incorporating DNA and RNA-based analyses over a time frame of 2-3 years would lead to a greater understanding of the effects of soil disturbance on bacterial communities.


英文关键词Antarctica TRFLP Bacteria Human disturbance Soil physiochemical properties
类型Article
语种英语
国家New Zealand ; Spain
收录类别SCI-E
WOS记录号WOS:000321974900006
WOS关键词DRY VALLEY SOILS ; ROSS SEA REGION ; KING-GEORGE-ISLAND ; MICROBIAL COMMUNITIES ; VICTORIA LAND ; HYDROCARBON SPILLS ; DOMINANT BACTERIA ; WRIGHT VALLEY ; POLAR DESERT ; ECOSYSTEM
WOS类目Biodiversity Conservation ; Ecology
WOS研究方向Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/179458
作者单位1.Univ Waikato, Hamilton, New Zealand;
2.Manaaki Whenua, Landcare Res, Hamilton, New Zealand;
3.Univ Autonoma Madrid, Fac Sci, E-28049 Madrid, Spain
推荐引用方式
GB/T 7714
O’Neill, Tanya,Balks, Megan,Stevenson, Bryan,et al. The short-term effects of surface soil disturbance on soil bacterial community structure at an experimental site near Scott Base, Antarctica[J],2013,36(7):985-996.
APA O’Neill, Tanya,Balks, Megan,Stevenson, Bryan,Lopez-Martinez, Jeronimo,Aislabie, Jackie,&Rhodes, Pip.(2013).The short-term effects of surface soil disturbance on soil bacterial community structure at an experimental site near Scott Base, Antarctica.POLAR BIOLOGY,36(7),985-996.
MLA O’Neill, Tanya,et al."The short-term effects of surface soil disturbance on soil bacterial community structure at an experimental site near Scott Base, Antarctica".POLAR BIOLOGY 36.7(2013):985-996.
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