DOI: 10.1111/gcb.12774
论文题名: Invited review: Climate change impacts in polar regions: Lessons from Antarctic moss bank archives
作者: Royles J. ; Griffiths H.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2015
卷: 21, 期: 3 起始页码: 1041
结束页码: 1057
语种: 英语
英文关键词: Antarctic moss
; Assimilation
; Climate change
; Peat accumulation
; Radiocarbon dating
; Stable isotopes
Scopus关键词: bioaccumulation
; carbon isotope
; climate change
; climate effect
; moss
; oxygen isotope
; peat
; polar region
; radiocarbon dating
; stable isotope
; Antarctica
; Bryophyta
; Chorisodontium
; Polytrichum strictum
; Antarctica
; climate
; climate change
; ecosystem
; growth, development and aging
; moss
; physiology
; Antarctic Regions
; Bryophyta
; Climate
; Climate Change
; Ecosystem
英文摘要: Mosses are the dominant plants in polar and boreal regions, areas which are experiencing rapid impacts of regional warming. Long-term monitoring programmes provide some records of the rate of recent climate change, but moss peat banks contain an unrivalled temporal record of past climate change on terrestrial plant Antarctic systems. We summarise the current understanding of climatic proxies and determinants of moss growth for contrasting continental and maritime Antarctic regions, as informed by 13C and 18O signals in organic material. Rates of moss accumulation are more than three times higher in the maritime Antarctic than continental Antarctica with growing season length being a critical determinant of growth rate, and high carbon isotope discrimination values reflecting optimal hydration conditions. Correlation plots of 13C and 18O values show that species (Chorisodontium aciphyllum / Polytrichum strictum) and growth form (hummock / bank) are the major determinants of measured isotope ratios. The interplay between moss growth form, photosynthetic physiology, water status and isotope composition are compared with developments of secondary proxies, such as chlorophyll fluorescence. These approaches provide a framework to consider the potential impact of climate change on terrestrial Antarctic habitats as well as having implications for future studies of temperate, boreal and Arctic peatlands. There are many urgent ecological and environmental problems in the Arctic related to mosses in a changing climate, but the geographical ranges of species and life-forms are difficult to track individually. Our goal was to translate what we have learned from the more simple systems in Antarctica, for application to Arctic habitats. © 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/61754
Appears in Collections: 影响、适应和脆弱性
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作者单位: British Antarctic Survey, High Cross, Madingley Road, Cambridge, United Kingdom; Department of Plant Sciences, University of Cambridge, Downing Street, Cambridge, United Kingdom
Recommended Citation:
Royles J.,Griffiths H.. Invited review: Climate change impacts in polar regions: Lessons from Antarctic moss bank archives[J]. Global Change Biology,2015-01-01,21(3)