Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.soilbio.2012.07.009 |
Warming constrains bacterial community responses to nutrient inputs in a southern, but not northern, maritime Antarctic soil | |
Dennis, Paul G.1; Newsham, Kevin K.2; Rushton, Steven P.3; Ord, Victoria J.3; O’Donnell, Anthony G.3,4; Hopkins, David W.1,5 | |
通讯作者 | Hopkins, David W. |
来源期刊 | SOIL BIOLOGY & BIOCHEMISTRY
![]() |
ISSN | 0038-0717 |
出版年 | 2013 |
卷号 | 57页码:248-255 |
英文摘要 | We investigated the effects of increased soil temperature, water and nutrient availability on soil bacterial communities at Wynn Knolls on Signy Island (60 degrees S) in the northern maritime Antarctic and at Mars Oasis (71 degrees S) in the southern maritime Antarctic. After 10-12 months, analyses of the concentrations of ester linked fatty acids (ELFAs) in soil indicated that bacterial communities responded positively to single applications of substrates at both locations, with 20% and 49% increases in total Gram positive and Gram negative bacterial markers, respectively, in response to the application of tryptic soy broth (TSB; a complex substrate containing organic carbon and nitrogen, plus other nutrient elements) at Wynn Knolls, and 120% and 44% increases in Gram positive bacterial markers at Mars Oasis in response to the application of TSB and the amino acid glycine (a relatively simple source of organic carbon and nitrogen), respectively. Responses to the warming treatment were not detected at Wynn Knolls, where open top chambers (OTCs) increased mean monthly soil temperatures by up to 0.7 degrees C, but at Mars Oasis, where OTCs increased monthly soil temperatures by up to 2.4 degrees C, warming led to 41% and 46% reductions in the concentrations of Gram positive bacterial markers in soil to which glycine and TSB had been applied, respectively. Warming also led to 55% and 51% reductions in the ratio of Gram positive to Gram negative markers in soils at Mars Oasis to which glycine and TSB had been applied. These data suggest that warming may constrain the responses of bacterial communities to carbon and nitrogen inputs arising from dead plant matter entering maritime Antarctic soils in future decades. (C) 2012 Elsevier Ltd. All rights reserved. |
英文关键词 | Antarctica Climate change Gram negative bacteria Gram positive bacteria Nutrient input Open top chambers (OTCs) Substrate amendments Warming Water application |
类型 | Article |
语种 | 英语 |
国家 | Scotland ; England ; Australia |
收录类别 | SCI-E |
WOS记录号 | WOS:000317247100028 |
WOS关键词 | MICROBIAL COMMUNITIES ; DRY VALLEY ; CLIMATE-CHANGE ; TEMPERATURE ; PRODUCTIVITY ; MANIPULATION ; RESPIRATION ; ECOSYSTEMS ; DIVERSITY ; PROFILES |
WOS类目 | Soil Science |
WOS研究方向 | Agriculture |
来源机构 | University of Western Australia |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/179964 |
作者单位 | 1.Univ Stirling, Sch Biol & Environm Sci, Stirling FK9 4LA, Scotland; 2.British Antarctic Survey, Ecosyst Programme, Cambridge CB3 0ET, England; 3.Newcastle Univ, Sch Biol, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England; 4.Univ Western Australia, Crawley, WA 6009, Australia; 5.Heriot Watt Univ, Sch Life Sci, Edinburgh EH14 4AS, Midlothian, Scotland |
推荐引用方式 GB/T 7714 | Dennis, Paul G.,Newsham, Kevin K.,Rushton, Steven P.,et al. Warming constrains bacterial community responses to nutrient inputs in a southern, but not northern, maritime Antarctic soil[J]. University of Western Australia,2013,57:248-255. |
APA | Dennis, Paul G.,Newsham, Kevin K.,Rushton, Steven P.,Ord, Victoria J.,O’Donnell, Anthony G.,&Hopkins, David W..(2013).Warming constrains bacterial community responses to nutrient inputs in a southern, but not northern, maritime Antarctic soil.SOIL BIOLOGY & BIOCHEMISTRY,57,248-255. |
MLA | Dennis, Paul G.,et al."Warming constrains bacterial community responses to nutrient inputs in a southern, but not northern, maritime Antarctic soil".SOIL BIOLOGY & BIOCHEMISTRY 57(2013):248-255. |
条目包含的文件 | 条目无相关文件。 |
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。