DOI: 10.1016/j.quascirev.2016.04.001
Scopus记录号: 2-s2.0-84963864948
论文题名: A first chironomid-based summer temperature reconstruction (13-5 ka BP) around 49°N in inland Europe compared with local lake development
作者: Hájková P. ; Pařil P. ; Petr L. ; Chattová B. ; Matys Grygar T. ; Heiri O.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2016
卷: 141 起始页码: 94
结束页码: 111
语种: 英语
英文关键词: Carpathians
; Climate
; Diatoms
; Geochemistry
; Holocene
; Lake-productivity
; Late Glacial
; Pollen
; Transfer functions
; Water level changes
Scopus关键词: Algae
; Atmospheric temperature
; Geochemistry
; Glacial geology
; Lakes
; Phosphorus
; Phytoplankton
; Transfer functions
; Water levels
; Carpathians
; Climate
; Diatoms
; Holocenes
; Lake productivities
; Late Glacial
; Pollen
; Water level changes
; Climate change
; biological production
; diatom
; environmental change
; fly
; geochemistry
; Hypsithermal
; ice core
; lacustrine deposit
; paleoclimate
; paleoecology
; paleoenvironment
; palynology
; Pleistocene
; proxy climate record
; reconstruction
; summer
; temperature profile
; vegetation history
; Arctic
; Carpathians
; Greenland
; Slovakia
; Vihorlat Mountains
; Bacillariophyta
; Betula
; Chironomidae
; Chlorophyta
; Corylus
; Larix
; Picea
; Ulmus
英文摘要: Temperature reconstructions for the end of the Pleistocene and the first half of the Holocene based on biotic proxies are rare for inland Europe around 49°N. We analysed a 7 m long sequence of lake deposits in the Vihorlat Mts in eastern Slovakia (820 m a.s.l.). Chironomid head capsules were used to reconstruct mean July temperature (TJuly), other proxies (diatoms, green algae, pollen, geochemistry) were used to reconstruct local environmental changes that might have affected the climate reconstruction, such as epilimnetic total phosphorus concentrations (TP), lake level changes and development of surrounding vegetation. During the Younger Dryas (YD), temperature fluctuated between 7 and 11 °C, with distinct, decadal to centennial scale variations, that agree with other palaeoclimate records in Europe such as δ18O content in stalagmites or Greenland ice cores. The results indicate that the site was somewhat colder than expected from the general south-to-north YD temperature gradient within Europe, possibly because of north-facing exposition. The warmer phases of the YD were characterised by low water level or even complete desiccation of the lake (12,200-12,400 cal yr BP). At the Late-Glacial/Holocene transition TJuly steeply increased from from 11 to 15.5 °C (11,700-11,400 cal yr BP) - the highest TJuly for entire sequence. This rapid climate change was reflected by all proxies as a compositional change and increasing species diversity. The open woodlands of Pinus, Betula, Larix and Picea were replaced by broad-leaved temperate forests dominated by Betula, later by Ulmus and finally by Corylus (ca 9700 cal yr BP). At the same time, input of eroded coarse-grained material into the lake decreased and organic matter (LOI) and biogenic silica increased. The Early-Holocene climate was rather stable till 8700 cal yr BP, with temporary decrease in TJuly around 11,200 cal yr BP. The lake was productive with a well-developed littoral, as indicated by both diatoms and chironomids. A distinct decline of TJuly to 10 °C between 8700 and 8000 cal yr BP was associated with decreasing chironomid diversity and increasing climate moistening indicated by pollen. Tychoplanktonic and phosphorus-demanding diatoms increased which might be explained by hydrological and land-cover changes. Later, a gradual warming started after 7000 cal yr BP and representation of macrophytes, periphytic diatoms and littoral chironomids increased. Our results suggest that the Holocene thermal maximum was taking place unusually early in the Holocene at our study site, but its timing might be affected by topography and mesoclimate. We further demonstrated that temperature changes had coincided with variations in local hydrology. © 2016 Elsevier Ltd. 资助项目: The research was financed by the grant project of the Czech Science Foundation (P504/11/0429), by institutional supports and project MUNI/A/1048/2015 of Masaryk University and Czech Academy of Sciences (RVO 67985939). We are grateful to Ondřej Hájek for creating the map, our colleges M. Hájek, L. Dudová, T. Duda and S. Rezník for help by coring the profile in the field and anonymous reviewer for valuable comments. E. Jamrichová helped us with preparing of pollen diagram.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59592
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Botany and Zoology, Faculty of Science, Masaryk University, Kotlářská 2, Brno, Czech Republic; Department of Vegetation Ecology, Institute of Botany, Academy of Sciences of the Czech Republic, Lidická 25/27, Brno, Czech Republic; Institute of Inorganic Chemistry, Academy of Science of the Czech Republic, Řež, Czech Republic; Institute of Plant Sciences and Oeschger Centre for Climate Change Research, Altenbergrain 21, Bern, Switzerland
Recommended Citation:
Hájková P.,Pařil P.,Petr L.,et al. A first chironomid-based summer temperature reconstruction (13-5 ka BP) around 49°N in inland Europe compared with local lake development[J]. Quaternary Science Reviews,2016-01-01,141