DOI: 10.1111/gcb.12522
论文题名: Soil animal responses to moisture availability are largely scale, not ecosystem dependent: Insight from a cross-site study
作者: Sylvain Z.A. ; Wall D.H. ; Cherwin K.L. ; Peters D.P.C. ; Reichmann L.G. ; Sala O.E.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2014
卷: 20, 期: 8 起始页码: 2631
结束页码: 2643
语种: 英语
英文关键词: Climate change
; Desert
; Drought
; Grassland
; Mites
; Nematodes
Scopus关键词: climate change
; climate effect
; community response
; decomposition
; desert
; ecosystem response
; grassland
; mite
; moisture content
; nematode
; nutrient cycling
; soil biota
; soil moisture
; trophic structure
; vegetation cover
; Antarctica
; United States
; soil
; water
; animal
; Antarctica
; chemistry
; climate change
; ecosystem
; food chain
; mite
; nematode
; population density
; soil
; United States
; Animals
; Antarctic Regions
; Climate Change
; Ecosystem
; Food Chain
; Mites
; Nematoda
; Population Density
; Soil
; United States
; Water
英文摘要: Climate change will result in reduced soil water availability in much of the world either due to changes in precipitation or increased temperature and evapotranspiration. How communities of mites and nematodes may respond to changes in moisture availability is not well known, yet these organisms play important roles in decomposition and nutrient cycling processes. We determined how communities of these organisms respond to changes in moisture availability and whether common patterns occur along fine-scale gradients of soil moisture within four individual ecosystem types (mesic, xeric and arid grasslands and a polar desert) located in the western United States and Antarctica, as well as across a cross-ecosystem moisture gradient (CEMG) of all four ecosystems considered together. An elevation transect of three sampling plots was monitored within each ecosystem and soil samples were collected from these plots and from existing experimental precipitation manipulations within each ecosystem once in fall of 2009 and three times each in 2010 and 2011. Mites and nematodes were sorted to trophic groups and analyzed to determine community responses to changes in soil moisture availability. We found that while both mites and nematodes increased with available soil moisture across the CEMG, within individual ecosystems, increases in soil moisture resulted in decreases to nematode communities at all but the arid grassland ecosystem; mites showed no responses at any ecosystem. In addition, we found changes in proportional abundances of mite and nematode trophic groups as soil moisture increased within individual ecosystems, which may result in shifts within soil food webs with important consequences for ecosystem functioning. We suggest that communities of soil animals at local scales may respond predictably to changes in moisture availability regardless of ecosystem type but that additional factors, such as climate variability, vegetation composition, and soil properties may influence this relationship over larger scales. © 2014 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62152
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Biology, Colorado State University, Fort Collins, CO, 80523, United States; Natural Resource Ecology Laboratory, Colorado State University, Fort Collins, CO, 80523, United States; USDA ARS Jornada Experimental Range and Jornada Basin Long-Term Ecological Research Program, New Mexico State University, Las Cruces, NM, 88012, United States; USDA ARS Grassland Soil and Water Research Laboratory, Temple, TX, 76502, United States; School of Life Sciences and School of Sustainability, Arizona State University, Tempe, AZ, 85287, United States
Recommended Citation:
Sylvain Z.A.,Wall D.H.,Cherwin K.L.,et al. Soil animal responses to moisture availability are largely scale, not ecosystem dependent: Insight from a cross-site study[J]. Global Change Biology,2014-01-01,20(8)