globalchange  > 过去全球变化的重建
DOI: 10.1016/j.quascirev.2015.03.027
Scopus记录号: 2-s2.0-84928692736
论文题名:
Lake sediment multi-taxon DNA from North Greenland records early post-glacial appearance of vascular plants and accurately tracks environmental changes
作者: Epp L.S.; Gussarova G.; Boessenkool S.; Olsen J.; Haile J.; Schrøder-Nielsen A.; Ludikova A.; Hassel K.; Stenøien H.K.; Funder S.; Willerslev E.; Kjær K.; Brochmann C.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2015
卷: 117
起始页码: 152
结束页码: 163
语种: 英语
英文关键词: Bryophytes ; Copepods ; Diatoms ; Greenland ; Metabarcoding ; Sedimentary DNA ; Vegetation history
Scopus关键词: Aquatic ecosystems ; Climate change ; Ecology ; Ecosystems ; Glacial geology ; Lakes ; Plants (botany) ; Productivity ; Sedimentology ; Sediments ; Vegetation ; Bryophytes ; Copepods ; Diatoms ; Greenland ; Metabarcoding ; Vegetation history ; DNA ; algae ; Bacillariophyta ; bryophytes ; Copepoda ; Empetrum nigrum ; Tracheophyta
英文摘要: High Arctic environments are particularly sensitive to climate changes, but retrieval of paleoecological data is challenging due to low productivity and biomass. At the same time, Arctic soils and sediments have proven exceptional for long-term DNA preservation due to their constantly low temperatures. Lake sediments contain DNA paleorecords of the surrounding ecosystems and can be used to retrieve a variety of organismal groups from a single sample. In this study, we analyzed vascular plant, bryophyte, algal (in particular diatom) and copepod DNA retrieved from a sediment core spanning the Holocene, taken from Bliss Lake on the northernmost coast of Greenland. A previous multi-proxy study including microscopic diatom analyses showed that this lake experienced changes between marine and lacustrine conditions. We inferred the same environmental changes from algal DNA preserved in the sediment core. Our DNA record was stratigraphically coherent, with no indication of leaching between layers, and our cross-taxon comparisons were in accordance with previously inferred local ecosystem changes. Authentic ancient plant DNA was retrieved from nearly all layers, both from the marine and the limnic phases, and distinct temporal changes in plant presence were recovered. The plant DNA was mostly in agreement with expected vegetation history, but very early occurrences of vascular plants, including the woody Empetrum nigrum, document terrestrial vegetation very shortly after glacial retreat. Our study shows that multi-taxon metabarcoding of sedimentary ancient DNA from lake cores is a valuable tool both for terrestrial and aquatic paleoecology, even in low-productivity ecosystems such as the High Arctic. © 2015 Elsevier Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59934
Appears in Collections:过去全球变化的重建

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作者单位: Natural History Museum, University of Oslo, PO Box 1172 Blindern, Oslo, Norway; Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Periglacial Research, Am Telegrafenberg A43, Potsdam, Germany; Department of Botany, St Petersburg State University, Universitetskaya nab. 7/9, St Petersburg, Russian Federation; AMS C Dating Centre, Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, Aarhus C, Denmark; Centre of Excellence for GeoGenetics, Natural History Museum of Denmark, Øster Voldgade 5-7, Copenhagen K, Denmark; TrEnD Laboratory, Curtin University, Bentley, Perth, WA, Australia; Institute of Limnology, Russian Academy of Sciences, Sevastyanova str., 9, St Petersburg, Russian Federation; Natural History Department, NTNU University Museum, Norwegian University of Science and Technology, Trondheim, Norway; Centre for Ecological and Evolutionary Synthesis, Department of Biosciences, University of Oslo, PO Box 1066 Blindern, Oslo, Norway

Recommended Citation:
Epp L.S.,Gussarova G.,Boessenkool S.,et al. Lake sediment multi-taxon DNA from North Greenland records early post-glacial appearance of vascular plants and accurately tracks environmental changes[J]. Quaternary Science Reviews,2015-01-01,117
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