Temporal changes in nematode community structure in a desert ecosystem

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	Temporal changes in nematode community structure in a desert ecosystem
	Liang, W; Steinberger, Y; Steinberger, Y, Bar Ilan Univ, Fac Life Sci, IL-52900 Ramat Gan, Israel
刊名	JOURNAL OF ARID ENVIRONMENTS
	2001
卷号	48 期号:3 页码:267-280
关键词	Soil Nematode Community Structure Ecological Indices Halophytes Desert Salinity
ISSN号	0140-1963
英文摘要	The effects of soil conditions on soil nematode community were studied. Soil samples from the upper soil layer (0-10 cm) were collected monthly (except for two samplings in February 1999), under the canopies of the two halophytic shrubs: Artemisia monosperma and Retama raetam. Significant differences in soil environmental variables (soil moisture, organic matter, electrical conductivity, Ca2+, K+ and Na+) were observed between the canopies and the bare soil samples (p < 0.01) during the study period. The soil water content under shrubs and in bare soil was <1.0% from April to December 1998 then increased to 4.9% in January 1999. During the winter season (December 1998 to March 1999) the mean numbers of total free-living nematodes were found to be lower under A. monosperma than under R. raetam. Various ecological indices were used to assess and compare the response of nematode populations to the soil conditions. From October 1998 to February 1999, the mean values of Simpson's diversity index (SI), Shannon's index (H') and Sigma maturity index (CMI) were observed to be lower under A. monosperma than under R., raetam. The ratio of (fungivores + bacterivores) to plant parasites ((FF + BF)/PP), SI, H' and Sigma MI were found to be sensitive to moisture stress in a sandy desert ecosystem. (C) 2001 Academic Press.
学科主题	Ecology ; Environmental Sciences
语种	英语
WOS记录号	WOS:000169580600003
公开日期	2011-09-23
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/55527]
专题	沈阳应用生态研究所_沈阳应用生态研究所
通讯作者	Steinberger, Y, Bar Ilan Univ, Fac Life Sci, IL-52900 Ramat Gan, Israel
推荐引用方式 GB/T 7714	Liang, W,Steinberger, Y,Steinberger, Y, Bar Ilan Univ, Fac Life Sci, IL-52900 Ramat Gan, Israel. Temporal changes in nematode community structure in a desert ecosystem[J]. JOURNAL OF ARID ENVIRONMENTS,2001,48(3):267-280.
APA	Liang, W,Steinberger, Y,&Steinberger, Y, Bar Ilan Univ, Fac Life Sci, IL-52900 Ramat Gan, Israel.(2001).Temporal changes in nematode community structure in a desert ecosystem.JOURNAL OF ARID ENVIRONMENTS,48(3),267-280.
MLA	Liang, W,et al."Temporal changes in nematode community structure in a desert ecosystem".JOURNAL OF ARID ENVIRONMENTS 48.3(2001):267-280.