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Figure 1: Oak stable carbon isotopes scaled to mean summer (July-August) Central England temperature (A); oxygen isotopes scaled to summer (June-August) England and Wales precipitation sum (B).
T9 Lateglacial and Holocene Climate and Environmental Change in the Northeastern Mediterranean Region: The Diatom Evidence from Lake Dojran (Republic of Macedonia/Greece) X.S. Zhang 1 *, J.M. Reed 1 , B. Wagner 2 , A. Francke 2 and Z. Levkov 3 1 Department of Geography, Environment and Earth Sciences, University of Hull, Hull 2 Institute of Geology and Mineralogy, University of Cologne, Cologne, Germany 3 Institute of Biology, Faculty of Natural Sciences, Skopje, Republic of Macedonia The northeastern Mediterranean region is located on an important boundary between classic Mediterranean and continental climate zones. In spite of the recent increase in palaeoclimate research, our understanding of patterns and mechanisms of Late Quaternary climate change is still poor across the region, with spatial inconsistency in inferred patterns of change. The southern Balkan Republic of Macedonia varies in climate between continental-Mediterranean (ancient Lake Ohrid and Lake Prespa in the southeast) and classic Mediterranean (Lake Dojran in the west). As part of a multi-site ICDP project which aims to reconstruct Quaternary climate across multiple glacialinterglacial cycles, this study focuses on limnological response to Lateglacial and Holocene climate and environmental change from analysis of a 7.17 m core from Lake Dojran, which is currently a shallow and hypereutrophic lake which has suffered accelerated impact from water abstraction and anthropogenic nutrient input. The results of diatom analysis show a shift to the dominance of benthic taxa, including obligate saline taxa, during the Younger Dryas period, providing the strong evidence for minimum lake level and enhanced aridity. During the earliest Holocene (corresponding to the Preboreal period) the low diversity dominance of planktonic Cyclotella ocellata indicates a maximum lake depth, probably due to meltwater impulse. During the early Holocene a shallower and eutrophic condition is indicated by the dominance of non-planktonic taxa. During the mid Holocene the planktonic taxa such as Aulacoseira granulata, Stephanodiscus medius, S. hantzschii and Cyclostephanos dubius indicate a eutrophic, possibly relatively deep and turbid condition. In spite of low concentration and high dissolution of diatoms during the late Holocene, the diatom composition indicates a shallow condition and high nutrient level. However, in spite of enhanced anthropogenic deforestation, there is no clear evidence for accelerated nutrient input in the recent past. Keywords: northeastern Mediterranean; Lake Dojran; diatom; Younger Dryas; Holocene
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QRA@50: Quaternary Revolutions QRA
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Conference Programme Wednesday 8th
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General Notes Exhibitors A small nu
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QRA50: Top 50 UK Quaternary Sites N
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THEME 1: CAUSES OF CLIMATE CHANGE C
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THEME 2: MEASURING TIME Radiocarbon
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THEME 3: MEASURING AND UNDERSTANDIN
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THEME 4: MODELLING THE EARTH SYSTEM
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modeling context, or in the context
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THEME 5: ICE SHEET DYNAMICS Time, t
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THEME 7: THE OCEANS The Oceans, CO
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THEME 8: TERRESTRIAL STRATIGRAPHY A
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THEME 9: PALAEOECOLOGY Conservation
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THEME 9: PALAEOECOLOGY Beetles, bon
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THEME 10: HUMAN ORIGINS, ENVIRONMEN
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THEME 11: INSIGHTS FROM GENETICS In
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Van Walt m onitoring your needs Del
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T2 TRACEing Tephra Horizons in Nort
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T5 The Hebrides Ice Stream (HIS) an
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T9 Formation and Cultural Use of We
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T3 Glacier-based climate reconstruc
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T5 Reconstructing the maximum exten
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T6 First recorded evidence of subaq
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T2 Towards a Greenland tephra latti
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T5 BRITICE-CHRONO Transect 8: const
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T8 Pleistocene landscape change at
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T10 Advances in geoconservation: fu
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T7 ARAMACC: Advancing the use of an
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T5 BRITICE-CHRONO: Constraining rat
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T2 Tracing and constraining key tep
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T2 Testing the potential of OSL to
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T5 Reconstruction of ice-sheet chan
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T3 Spatial and temporal variability
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T5 Glacial geomorphology of the Inn
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T2 Revolution and evolution: 35 yea
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T5 BRITICE-CHRONO, Transect 2: cons
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T2 Improving surface exposure ages
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T5 Geomorphology and dynamics of th
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T9 The Anthropogenic Element in the
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Fraser, W.T., Watson, J.S., Sephton
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T10 Human-environment-climate inter
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T9 Island Evolution: a ‘front-lin
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T5 Modelling the water isotope resp
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T9 Biome dynamics in the Ohrid Basi
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T5 The Moffatdale RSF cluster, Sout
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T11 Combining palynology and ecolog
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Figure 1: The palm swamp forest at
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T3 SCOPSCO Lake Ohrid deep drilling
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δ 18 Odiatom); biomarkers; pollen;
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T3 Quaternary revelations: the role
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T8 Late-Middle to Late Pleistocene
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T9 Climate forcing of mammoth range
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T8 Svalbard surging glacier landsys
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T2 Constraining peatland environmen
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T9 Late - glacial/Holocene vegetati
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T10 Developing a Holocene tephrostr
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Roberts, S. J. (1997) The spatial e
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T7 Pleistocene sea-surface and inte
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Page 137 and 138: T3 Exploiting multi-proxy analysis
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Page 145 and 146: T9 When was Europe deforested? Larg
Page 147 and 148: T9 Long-term vegetation development
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Page 151 and 152: T3 The temperature-δ 18 O relation
Page 153 and 154: T10 Neolithic land-use change clima
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Page 159 and 160: Figure 1: Lake ‘Disko 2’ on Dis
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Page 173 and 174: T2 Cryptotephra records as archives
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Page 177: T3 Songs from the wood: tales of th
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