干旱区生态环境知识资源中心(Arid): Lithobiont-dependent ionic composition in runoff water

Arid

DOI	10.2478/johh-2020-0014
	Lithobiont-dependent ionic composition in runoff water
	Kidron, Giora J.; Starinsky, Abraham
通讯作者	Kidron, GJ
来源期刊	JOURNAL OF HYDROLOGY AND HYDROMECHANICS
EISSN	1338-4333
出版年	2020
卷号	68 期号:3 页码:293-301
英文摘要	Rock dwelling organisms (lithobionts) such as cyanobacteria (prokaryotes) and chlorolichens (eukaryotes) abound in the Negev Desert, where they cover almost all calcareous bedrocks and rock particles (cobbles, boulders). In a small limestone watershed in the Negev Highlands, cyanobacteria inhabit the south-facing (SF) bedrocks, epilithic lichens (accompanied by endolithic lichens) inhabit the north-facing (NF) bedrocks, while endolithic lichens cover most of the cobbles and boulders in both aspects. In order to study their contribution to runoff water, a pair of runoff plots was established on habitats with cyanobacteria, endolithic lichens, and epilithic lichens. Rain and runoff were collected during the hydrological year 2006/07, and the chemical composition (Ca, Mg, Na, K, Cl, SO4, HCO3, Si) of the rain and runoff water was analyzed. Several patterns were observed: (a) as indicated by Si, more dust accumulated on the bedrocks; (b) all substrates exhibited high amounts of Ca, and HCO3; (c) while SF-bedrocks showed enrichment in K, both bedrocks (and especially the NF bedrocks), as well as the NF boulders showed an enrichment in Mg. While the enrichment in Ca and HCO3 can be explained by the contribution of the limestone parent material, the enrichment in K and Mg can be explained by the contribution of the living lithobionts, with K being mainly contributed by the cyanobacteria and Mg mainly by the epilithic lichens. Ion enrichment may therefore be aspect-dependent, reflecting the lithobiont distribution within the drainage basin, partially explaining the enrichment in K and Mg previously recorded in runoff water from the Negev.
英文关键词	Cyanobacteria Dew Lichens Magnesium Potassium Negev Desert
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000560031900010
WOS关键词	ARID LIMESTONE HILLSIDE ; NEGEV DESERT ; CHEMICAL-COMPOSITION ; BIOLOGICAL SOIL ; NORTHERN NEGEV ; SOLUTE CONCENTRATIONS ; SPATIAL VARIATIONS ; MOISTURE REGIME ; DRAINAGE-BASIN ; LICHENS
WOS类目	Water Resources
WOS研究方向	Water Resources
来源机构	Hebrew University of Jerusalem
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325646
作者单位	[Kidron, Giora J.; Starinsky, Abraham] Hebrew Univ Jerusalem, Inst Earth Sci, Givat Ram Campus, IL-91904 Jerusalem, Israel
推荐引用方式 GB/T 7714	Kidron, Giora J.,Starinsky, Abraham. Lithobiont-dependent ionic composition in runoff water[J]. Hebrew University of Jerusalem,2020,68(3):293-301.
APA	Kidron, Giora J.,&Starinsky, Abraham.(2020).Lithobiont-dependent ionic composition in runoff water.JOURNAL OF HYDROLOGY AND HYDROMECHANICS,68(3),293-301.
MLA	Kidron, Giora J.,et al."Lithobiont-dependent ionic composition in runoff water".JOURNAL OF HYDROLOGY AND HYDROMECHANICS 68.3(2020):293-301.