Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.13928 |
Tipping point in plant-fungal interactions under severe drought causes abrupt rise in peatland ecosystem respiration | |
Jassey, Vincent E. J.1,2,3; Reczuga, Monika K.4,5; Zielinska, Malgorzata4,5; Slowinska, Sandra6; Robroek, Bjorn J. M.7; Mariotte, Pierre3; Seppey, Christophe V. W.8,9; Lara, Enrique10; Barabach, Jan4,5; Slowinski, Michal11; Bragazza, Luca2,3,12; Chojnicki, Bogdan H.13; Lamentowicz, Mariusz4,5; Mitchell, Edward A. D.8,14; Buttler, Alexandre2,3 | |
2018-03-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2018 |
卷号 | 24期号:3页码:972-986 |
文章类型 | Article |
语种 | 英语 |
国家 | France; Switzerland; Poland; England; Norway; Spain; Italy |
英文摘要 | Ecosystems are increasingly prone to climate extremes, such as drought, with long-lasting effects on both plant and soil communities and, subsequently, on carbon (C) cycling. However, recent studies underlined the strong variability in ecosystem's response to droughts, raising the issue of nonlinear responses in plant and soil communities. The conundrum is what causes ecosystems to shift in response to drought. Here, we investigated the response of plant and soil fungi to drought of different intensities using a water table gradient in peatlands-a major C sink ecosystem. Using moving window structural equationmodels, we show that substantial changes in ecosystem respiration, plant and soil fungal communities occurred when the water level fell below a tipping point of -24cm. As a corollary, ecosystem respiration was the greatest when graminoids and saprotrophic fungi became prevalent as a response to the extreme drought. Graminoids indirectly influenced fungal functional composition and soil enzyme activities through their direct effect on dissolved organic matter quality, while saprotrophic fungi directly influenced soil enzyme activities. In turn, increasing enzyme activities promoted ecosystem respiration. We show that functional transitions in ecosystem respiration critically depend on the degree of response of graminoids and saprotrophic fungi to drought. Our results represent a major advance in understanding the nonlinear nature of ecosystem properties to drought and pave the way towards a truly mechanistic understanding of the effects of drought on ecosystem processes. |
英文关键词 | biodiversity-ecosystem functioning ecosystem shifts fungal diversity hydrolases moving window structural equation model oxidases plant-soil feedbacks threshold |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000425396700011 |
WOS关键词 | SOIL MICROBIAL COMMUNITY ; ORGANIC-MATTER ; CLIMATE-CHANGE ; CARBON-CYCLE ; VEGETATION COMPOSITION ; FUTURE CHALLENGES ; NORTHERN PEATLAND ; SPECIES RICHNESS ; BOREAL PEATLAND ; ARCTIC TUNDRA |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/18265 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Univ Toulouse, CNRS, Funct Ecol & Environm Lab, INP,UPS, Toulouse, France; 2.Ecole Polytech Fed Lausanne, Sch Architecture Civil & Environm Engn ENAC, Ecol Syst Lab ECOS, Lausanne, Switzerland; 3.Swiss Fed Inst Forest Snow & Landscape Res, WSL, Site Lausanne, Lausanne, Switzerland; 4.Adam Mickiewicz Univ, Lab Wetland Ecol & Monitoring, Poznan, Poland; 5.Adam Mickiewicz Univ, Dept Biogeog & Palaeoecol, Poznan, Poland; 6.Polish Acad Sci, Inst Geog & Spatial Org, Dept Geoecol & Climatol, Warsaw, Poland; 7.Univ Southampton, Biol Sci, Southampton, Hants, England; 8.Univ Neuchatel, Lab Soil Biodivers, Neuchatel, Switzerland; 9.Univ Tromso, Arctic & Marine Biol Dept, Tromso, Norway; 10.CSIC, Real Jardin Bot, Madrid, Spain; 11.Polish Acad Sci, Inst Geog & Spatial Org, Dept Environm Resources & Geohazards, Warsaw, Poland; 12.Univ Ferrara, Dept Life Sci & Biotechnol, Ferrara, Italy; 13.Poznan Univ Life Sci, Meteorol Dept, Poznan, Poland; 14.Bot Garden Neuchatel, Neuchatel, Switzerland |
推荐引用方式 GB/T 7714 | Jassey, Vincent E. J.,Reczuga, Monika K.,Zielinska, Malgorzata,et al. Tipping point in plant-fungal interactions under severe drought causes abrupt rise in peatland ecosystem respiration[J]. GLOBAL CHANGE BIOLOGY,2018,24(3):972-986. |
APA | Jassey, Vincent E. J..,Reczuga, Monika K..,Zielinska, Malgorzata.,Slowinska, Sandra.,Robroek, Bjorn J. M..,...&Buttler, Alexandre.(2018).Tipping point in plant-fungal interactions under severe drought causes abrupt rise in peatland ecosystem respiration.GLOBAL CHANGE BIOLOGY,24(3),972-986. |
MLA | Jassey, Vincent E. J.,et al."Tipping point in plant-fungal interactions under severe drought causes abrupt rise in peatland ecosystem respiration".GLOBAL CHANGE BIOLOGY 24.3(2018):972-986. |
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