δ18o and Trace Element Measurements as Proxy for the Reconstruction of Climate Changes at Lake Van (Turkey): Preliminary Results

Lemcke, Gerry; Sturm, Michael

doi:10.1007/978-3-642-60616-8_29

Cited by 145 publications

(101 citation statements)

References 27 publications

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“…Over the last glacial -interglacial transition, the  18 O c record has a stronger relationship with ground water outflow and lake depth/ volume than with P:E. It appears that it is the volumetric flux of water flowing through the lake, and the 9 balance between water lost through evaporation and via ground water that are the dominant controls in this system. In contrast with the modelling of Lake Van (Lemcke and Sturm, 1997) the calculations from Eski Acıgöl suggest relative humidity has relatively little control on evaporation compared to shifts in temperature. Although E and P are clearly important underlying controls on this system the explanation is not as simple as originally postulated.…”

Section: Eski Acıgölmentioning

confidence: 67%

Interpreting lake isotope records of Holocene environmental change in the Eastern Mediterranean

Jones

Roberts

2008

Quaternary International

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Section: Eski Acıgölmentioning

confidence: 67%

Interpreting lake isotope records of Holocene environmental change in the Eastern Mediterranean

Jones

Roberts

2008

Quaternary International

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“…humid phase. This climatic shift can be correlated with changes in atmospheric moisture over India (35) and low lake levels in Turkey (36). Peaking values of arid/saline Chenopodiaceae and a collapse of agriculture at ca.…”

Section: Resultsmentioning

confidence: 98%

Middle East coastal ecosystem response to middle-to-late Holocene abrupt climate changes

Kaniewski

Paulissen²,

Campo³

et al. 2008

Proc. Natl. Acad. Sci. U.S.A.

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The Holocene vegetation history of the northern coastal Arabian Peninsula is of long-standing interest, as this Mediterranean/ semiarid/arid region is known to be particularly sensitive to climatic changes. Detailed palynological data from an 800-cm alluvial sequence cored in the Jableh plain in northwest Syria have been used to reconstruct the vegetation dynamics in the coastal lowlands and the nearby Jabal an Nuşayriyah mountains for the period 2150 to 550 B.C. Corresponding with the 4.2 to 3.9 and 3.5 to 2.5 cal kyr BP abrupt climate changes (ACCs), two large-scale shifts to a more arid climate have been recorded. These two ACCs had different impacts on the vegetation assemblages in coastal Syria. The 3.5 to 2.5 cal kyr BP ACC is drier and lasted longer than the 4.2 to 3.9 cal kyr BP ACC, and is characterized by the development of a warm steppe pollen-derived biome (1100 -800 B.C.) and a peak of hot desert pollen-derived biome at 900 B.C. The 4.2 to 3.9 cal kyr BP ACC is characterized by a xerophytic woods and shrubs pollenderived biome ca. 2050 B.C. The impact of the 3.5 to 2.5 cal kyr BP ACC on human occupation and cultural development is important along the Syrian coast with the destruction of Ugarit and the collapse of the Ugarit kingdom at ca. 1190 to 1185 B.C.pollen-derived biomes ͉ Tell Tweini ͉ Syria ͉ bond events

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“…However, the interpretation of δ 18 O bulk is complex as it can be influenced by a number of climate variables, such as air and water temperature, seasonality of precipitation, moisture source and precipitation-to-evaporation ratio. According to Litt et al (2012Litt et al ( , 2009) and Lemcke and Sturm (1997), the δ 18 O bulk values of carbonates at Lake Van are primarily controlled by evaporation processes. Furthermore, Kwiecien et al (2014) and Pickarski et al (2015) mention that changes in seasonal rainfall have a significant effect on lake water isotope values.…”

Section: Palynologymentioning

confidence: 99%

Abrupt climate and vegetation variability of eastern Anatolia during the last glacial

et al. 2015

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Abstract. Detailed analyses of the Lake Van pollen, Ca / K ratio, and stable oxygen isotope record allow the identification of millennial-scale vegetation and environmental changes in eastern Anatolia throughout the last glacial (∼ 111.5-11.7 ka BP). The climate of the last glacial was cold and dry, indicated by low arboreal pollen (AP) levels. The driest and coldest period corresponds to Marine Isotope Stage (MIS) 2 (∼ 28-14.5 ka BP), which was dominated by highest values of xerophytic steppe vegetation.Our high-resolution multi-proxy record shows rapid expansions and contractions of tree populations that reflect variability in temperature and moisture availability. These rapid vegetation and environmental changes can be related to the stadial-interstadial pattern of Dansgaard-Oeschger (DO) events as recorded in the Greenland ice cores. Periods of reduced moisture availability were characterized by enhanced occurrence of xerophytic species and high terrigenous input from the Lake Van catchment area. Furthermore, the comparison with the marine realm reveals that the complex atmosphere-ocean interaction can be explained by the strength and position of the westerlies, which are responsible for the supply of humidity in eastern Anatolia. Influenced by the diverse topography of the Lake Van catchment, more pronounced DO interstadials (e.g., DO 19, 14, 12 and 8) show the strongest expansion of temperate species within the last glacial. However, Heinrich events (HE), characterized by highest concentrations of ice-rafted debris (IRD) in marine sediments, cannot be separated from other DO stadials based on the vegetation composition in eastern Anatolia. In addition, this work is a first attempt to establish a continuous microscopic charcoal record for the last glacial in the Near East.It documents an immediate response to millennial-scale climate and environmental variability and enables us to shed light on the history of fire activity during the last glacial.

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δ18o and Trace Element Measurements as Proxy for the Reconstruction of Climate Changes at Lake Van (Turkey): Preliminary Results

Cited by 145 publications

References 27 publications

Interpreting lake isotope records of Holocene environmental change in the Eastern Mediterranean

Interpreting lake isotope records of Holocene environmental change in the Eastern Mediterranean

Middle East coastal ecosystem response to middle-to-late Holocene abrupt climate changes

Abrupt climate and vegetation variability of eastern Anatolia during the last glacial

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