DOI: 10.1086/706340
论文题名: Community assembly and climate mismatch in late quaternary eastern North American pollen assemblages
作者: Knight C.A. ; Blois J.L. ; Blonder B. ; Macias-Fauria M. ; Ordonez A. ; Svenning J.-C.
刊名: American Naturalist
ISSN: 30147
出版年: 2020
卷: 195, 期: 2 语种: 英语
英文关键词: Climate matching/mismatching
; Community assembly
; Community ecology
; Macroecology
; Paleoecology
Scopus关键词: biostratigraphy
; fossil assemblage
; paleobotany
; paleoecology
; palynology
; plant community
; proxy climate record
; seed dispersal
; article
; climate change
; community ecology
; deglaciation
; filtration
; fossil pollen
; Late Quaternary
; latitude
; life history
; nonhuman
; paleoecology
; plant community
; prediction
; seed weight
; vegetation
英文摘要: Plant community response to climate change ranges from synchronous tracking to strong mismatch. Explaining this variation in climate change response is critical for accurate global change modeling. Here we quantify how closely assemblages track changes in climate (match/mismatch) and how broadly climate niches are spread within assemblages (narrow/broad ecological tolerance, or “filtering”) using data for the past 21,000 years for 531 eastern North American fossil pollen assemblages. Although climate matching has been strong over the last 21 millennia, mismatch increased in 30% of assemblages during the rapid climate shifts between 14.5 and 10 ka. Assemblage matching rebounded toward the present day in 10%–20% of assemblages. Climate-assemblage mismatch was greater in tree-dominated and high-latitude assemblages, consistent with persisting populations, slower dispersal rates, and glacial retreat. In contrast, climate matching was greater for assemblages comprising taxa with higher median seed mass. More than half of the assemblages were climatically filtered at any given time, with peak filtering occurring at 8.5 ka for nearly 80% of assemblages. Thus, vegetation assemblages have highly variable rates of climate mismatch and filtering over millennial scales. These climate responses can be partially predicted by species’ traits and life histories. These findings help constrain predictions for plant community response to contemporary climate change. © 2019 by The University of Chicago. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159626
Appears in Collections: 气候变化与战略
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作者单位: Department of Environmental Science Policy and Management, University of California, Berkeley, CA 94720, United States; School of Geography and the Environment, University of Oxford, Oxford, OX1 2JD, United Kingdom; School of Natural Sciences, University of California, Merced, CA 95343, United States; School of Biological Sciences, Queen’s University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, United Kingdom; Section for Ecoinformatics and Biodiversity, Department of Bioscience, Aarhus University, Ny Munkegade 114, Aarhus, 8000, Denmark
Recommended Citation:
Knight C.A.,Blois J.L.,Blonder B.,et al. Community assembly and climate mismatch in late quaternary eastern North American pollen assemblages[J]. American Naturalist,2020-01-01,195(2)