DOI: 10.1111/jbi.13802
论文题名: Ectomycorrhizal fungal diversity predicted to substantially decline due to climate changes in North American Pinaceae forests
作者: Steidinger B.S. ; Bhatnagar J.M. ; Vilgalys R. ; Taylor J.W. ; Qin C. ; Zhu K. ; Bruns T.D. ; Peay K.G.
刊名: Journal of Biogeography
ISSN: 3050270
出版年: 2020
卷: 47, 期: 3 语种: 英语
英文关键词: climate change
; community composition
; ectomycorrhizal fungi
; seasonality
Scopus关键词: climate change
; ectomycorrhiza
; global warming
; greenhouse gas
; molecular analysis
; population decline
; relative abundance
; seasonality
; species diversity
; sustainability
; symbiosis
; California
; Canada
; Florida [United States]
; Ontario [Canada]
; United States
; Basidiomycota
; Fungi
; Pinaceae
英文摘要: Aim: Ectomycorrhizal fungi (ECMF) are partners in a globally distributed tree symbiosis implicated in most major ecosystem functions. However, resilience of ECMF to future climates is uncertain. We forecast these changes over the extent of North American Pinaceae forests. Location: About 68 sites from North American Pinaceae forests ranging from Florida to Ontario in the east and southern California to Alaska in the west. Taxon: Ectomycorrhizal fungi (Asco- and Basidiomycetes). Methods: We characterized ECMF communities at each site using molecular methods and modelled climatic drivers of diversity and community composition with general additive, generalized dissimilarity models and Threshold Indicator Taxa ANalysis (TITAN). Next, we projected our models across the extent of North American Pinaceae forests and forecast ECMF responses to climate changes in these forests over the next 50 years. Results: We predict median declines in ECMF species richness as high as 26% in Pinaceae forests throughout a climate zone comprising more than 3.5 million square kilometres of North America (an area twice that of Alaska state). Mitigation of greenhouse gas emissions can reduce these declines, but not prevent them. The existence of multiple diversity optima along climate gradients suggest regionally divergent trajectories for North American ECMF, which is corroborated by corresponding ECMF community thresholds identified in TITAN models. Warming of forests along the boreal–temperate ecotone results in projected ECMF species loss and declines in the relative abundance of long-distance foraging ECMF species, whereas warming of eastern temperate forests has the opposite effect. Main Conclusions: Our results reveal potentially unavoidable ECMF species-losses over the next 50 years, which is likely to have profound (if yet unclear) effects on ECMF-associated biogeochemical cycles. © 2020 The Authors. Journal of Biogeography published by John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158853
Appears in Collections: 气候变化与战略
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作者单位: Department of Biology, Stanford University (lab of origin), Stanford, CA, United States; Department of Biology, Boston University, Boston, MA, United States; Department of Biology, Duke University, Durham, NC, United States; Department of Biology, University of California Berkeley, Berkeley, CA, United States; Department of Environmental Studies, University of California Santa Cruz, Santa Cruz, CA, United States; Department of Biology, Stanford University, Stanford, CA, United States
Recommended Citation:
Steidinger B.S.,Bhatnagar J.M.,Vilgalys R.,et al. Ectomycorrhizal fungal diversity predicted to substantially decline due to climate changes in North American Pinaceae forests[J]. Journal of Biogeography,2020-01-01,47(3)