Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.catena.2012.02.021 |
The effects of heavy winter rains and rare summer rains on biological soil crusts in the Negev Desert | |
Kidron, Giora J.1![]() | |
通讯作者 | Kidron, Giora J. |
来源期刊 | CATENA
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ISSN | 0341-8162 |
出版年 | 2012 |
卷号 | 95页码:6-11 |
英文摘要 | Biological soil crusts (BSCs) abound in the Hallamish dune field in the western Negev Desert, Israel. While their abundance may imply high adaptability to environmental change, such as fluctuations between wet and dry conditions following winter rains, summer rains, although rare, may also occur in the Hallamish dune field. The aim of the present paper is to examine crust responses to winter and summer rains, focusing particularly on its biomass components, chlorophyll and carbohydrate. In addition, species composition, during summer and winter was examined. Analysis took place during an exceptionally wet winter (1994/95 with 172 mm) and a summer rainstorm (12.5.93 with 9.7 mm). The data showed a 2-3 fold increase in chlorophyll a and total carbohydrates and a much richer species composition following the heavy winter rains of 1994/95. Yet, the data also showed similar to 15-30% decrease in the chlorophyll content of the crust (with no concomitant significant decrease in total carbohydrates) following the summer rainstorm. Intense weathering by the summer rain coupled with cell mortality may explain the decrease in the chlorophyll content following the summer rainstorm. suggesting possible changes in the BSC following a potential change in the precipitation regime due to global climate change. (C) 2012 Elsevier B.V. All rights reserved. |
英文关键词 | Microbiotic crust Biocrust Chlorophyll Carbohydrates Species composition Sand dune |
类型 | Article |
语种 | 英语 |
国家 | Israel |
收录类别 | SCI-E |
WOS记录号 | WOS:000304735800002 |
WOS关键词 | WESTERN NEGEV ; ECOPHYSIOLOGICAL INVESTIGATIONS ; MICROBIOTIC CRUSTS ; DUNE SLOPES ; SAND DUNES ; BLUE-GREEN ; WATER ; ISRAEL ; CYANOBACTERIA ; POLYSACCHARIDES |
WOS类目 | Geosciences, Multidisciplinary ; Soil Science ; Water Resources |
WOS研究方向 | Geology ; Agriculture ; Water Resources |
来源机构 | Ben-Gurion University of the Negev ; Hebrew University of Jerusalem |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/171727 |
作者单位 | 1.Hebrew Univ Jerusalem, Inst Earth Sci, IL-91904 Jerusalem, Israel; 2.Univ Haifa, Inst Evolut, IL-31905 Haifa, Israel; 3.Ben Gurion Univ Negev, Dept Dryland Biotechnol, Jacob Blaustein Inst Desert Res, IL-84993 Sede Boqer, Israel |
推荐引用方式 GB/T 7714 | Kidron, Giora J.,Barinova, Sophia,Vonshak, Ahuva. The effects of heavy winter rains and rare summer rains on biological soil crusts in the Negev Desert[J]. Ben-Gurion University of the Negev, Hebrew University of Jerusalem,2012,95:6-11. |
APA | Kidron, Giora J.,Barinova, Sophia,&Vonshak, Ahuva.(2012).The effects of heavy winter rains and rare summer rains on biological soil crusts in the Negev Desert.CATENA,95,6-11. |
MLA | Kidron, Giora J.,et al."The effects of heavy winter rains and rare summer rains on biological soil crusts in the Negev Desert".CATENA 95(2012):6-11. |
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