Eastern Mediterranean hydroclimate reconstruction over the last 3600 years based on sedimentary n-alkanes, their carbon and hydrogen isotope composition and XRF data from the Gialova Lagoon, SW Greece

Katrantsiotis, Christos; Kylander, Malin E.; Smittenberg, Rienk H.; Yamoah, Kweku Afrifa; Hättestrand, Martina; Avramidis, Pavlos; Strandberg, Nichola; Norström, Elin

doi:10.1016/j.quascirev.2018.07.008

Cited by 43 publications

(55 citation statements)

References 124 publications

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“…6). Similar elemental distributions in PC1 have been found in Greece (Katrantsiotis et al, 2018) and in Tibet (Ramisch et al, 2018). We interpret these fluctuations as hydro-climatic variations.…”

Section: Archive Comparison On the Spatial Scalesupporting

confidence: 79%

“…Although there are an increasing number of studies on eastern Mediterranean palaeoenvironmental archives that have been published most recently (Emmanouilidis et al, 2018(Emmanouilidis et al, , 2019Finné et al, 2017;Katrantsiotis et al, 2018Katrantsiotis et al, , 2019Masi et al, 2018;Rothacker et al, 2018), they do not provide a uniform picture of the climatic and environmental changes through the Middle to Late Holocene, and sometimes they are inconsistent with archaeological or historical data (Finné et al, 2019). Most reconstructions of Holocene climatic variations in the Mediterranean are based on one single palaeoenvironmental archive, leading to very heterogeneous and often even divergent results when being compared to each other (Finné et al, 2011;Luterbacher et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

“…Due to its mountainous topography with elevations of up to 2400 m only a few kilometres away from the coast, the Peloponnese displays a high climatic heterogeneity with significant precipitation and temperature gradients from west to east and from the coast to the mountain ranges. Hence, palaeoclimate records across the Peloponnese are prone to reveal different patterns on a spatially comparatively limited scale (Katrantsiotis et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

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Reconstruction of palaeoenvironmental variability based on an inter-comparison of four lacustrine archives on the Peloponnese (Greece) for the last 5000 years

Seguin

Avramidis

Haug

et al. 2020

E&G Quaternary Sci. J.

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Abstract. A high quantity of well-dated, high-resolution, continuous geoarchives is needed to connect palaeoenvironmental reconstructions with socio-environmental and cultural transformations in a geographically heterogeneous region such as southern Greece. However, detailed and continuous palaeoclimatic and palaeoenvironmental archives from the NE Peloponnese are still sparse. Here, we present two new palaeolake archives of Pheneos and Kaisari covering the last 10 500 and 6500 years, respectively. For the last 5000 years, we compare them with sediment records from adjacent Lake Stymphalia and the Asea valley by applying the same set of sedimentological, geochemical, and statistical analyses to all four lacustrine archives. Continuous geochemical X-ray fluorescence (XRF) core scanning records provide evidence for hydrological variations and environmental changes since the Early Helladic period (5050 BP), the beginning of the Bronze Age in Greece. We hereby focus on different spatial scales to estimate the validity range of the proxy signals. Ten elements were selected (Al, Si, K, Ca, Ti, Mn, Fe, Rb, Sr, Zr) for a principal component analysis. The clr(Ca∕Ti) was chosen as the most meaningful proxy, reflecting varying input of carbonaceous vs. clastic input, which may be linked to changes in the hydrological conditions. Our results show phases when permanent lake water bodies existed (ca. 5000–3600 cal BP) as well as phases with periodic desiccation of the lakes during younger times. While Pheneos and Kaisari show a drying trend during the transition phase from the Late Helladic period to the Proto-Geometric period (ca. 3200–2800 cal BP), Stymphalia and Asea show a rather short dry peak around 3200 cal BP followed by a wetter phase. Although all our geoarchives show evidence for drier phases, their timing and duration display considerable site-to-site differences which may be explained by site-specific responses in individual ecosystems. Age uncertainties, however, may likewise explain some deviations, as the dating is based on bulk sediment samples including potential unknown reservoir effects. The high regional geographical diversity within the Peloponnese combined with the dating challenges in the limestone-rich area and the variation in our data testify that any hypothetical mono-causal connection between palaeoenvironmental changes in a single geoarchive and contemporaneous societal transformations across the Peloponnese would be an oversimplification.

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Section: Archive Comparison On the Spatial Scalesupporting

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Reconstruction of palaeoenvironmental variability based on an inter-comparison of four lacustrine archives on the Peloponnese (Greece) for the last 5000 years

Seguin

Avramidis

Haug

et al. 2020

E&G Quaternary Sci. J.

Self Cite

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“…However, we suggest that these fresh water inputs were not enough to restore the less saline, pre-intervention conditions. Compared to climate driven, long-term changes in salinity that have been recorded in the GLw during the Holocene [37], the recent human alterations have resulted in short-term but more dramatic changes.…”

Section: Discussionmentioning

confidence: 92%

Anthropogenic Changes in a Mediterranean Coastal Wetland during the Last Century—The Case of Gialova Lagoon, Messinia, Greece

Maneas

Makopoulou

Bousbouras

et al. 2019

Water

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Human interventions during the last 70 years have altered the characteristics of the Gialova Lagoon, a coastal wetland that is part of a wider Natura 2000 site. In this study, we explore how human interventions and climate altered the wetland’s hydrological conditions and habitats, leading to changing wetland functions over time. Our interpretations are based on a mixed methodological approach combining conceptual hydrologic models, analysis of aerial photographs, local knowledge, field observations, and GIS (Geographic Information System) analyses. The results show that the combined effects of human interventions and climate have led to increased salinity in the wetland over time. As a result, the fresh and brackish water marshes have gradually been turned into open water or replaced by halophytic vegetation with profound ecological implications. Furthermore, current human activities inside the Natura 2000 area and in the surrounding areas could further impact on the water quantity and quality in the wetland, and on its sensitive ecosystems. We suggest that a more holistic understanding of the broader socio-ecological system is needed to understand the dynamics of the wetland and to achieve sustainable long-term management and conservation strategies.

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“…The Middle East (ME) has a heterogeneous climate for its size, encompassing the Eastern Mediterranean (EM, or Levant) and the Fertile Crescent (FC) (often considered in tandem, ) as well as parts of the Arabian Peninsula (AP) and North-East Africa [1,2]. The region spans the transition between temperate Mediterranean climate in the Levant to hyper-arid sub-tropical deserts in the south, with complex alpine topography in the northeast feeding the Euphrates and Tigris rivers which supports life in the southeastern FC ( Figure 1).…”

Section: Introductionmentioning

confidence: 99%

Speleothems from the Middle East: An Example of Water Limited Environments in the SISAL Database

Burstyn¹,

Martrat²,

López³

et al. 2019

Preprint

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The Middle East spans the transition between temperate Mediterranean climate in the Levant to hyper-arid sub-tropical deserts in the southern part of the Arabian Peninsula, with the complex alpine topography in the northeast feeding the Euphrates and Tigris rivers which support life in the southeastern Fertile Crescent (FC). Climate projections predict severe drying in major parts much of the ME in response to global warming, making it important to understand the controls of hydro-climate perturbations in the region. Here we discuss 23 ME speleothem stable oxygen isotope (δ 18 Occ) records from 16 sites from the SISAL_v1 database, which provide a record of past hydro-climatic variability. Sub-millennial changes in ME speleothem δ 18 Occ values primarily indicate changes in past precipitation amounts superimposed on variations of the main synoptic pattern in the region, specifically Mediterranean cyclones. The coherency (or lack thereof) between regional records is reviewed from Pleistocene to present, covering the Last Glacial Maximum (LGM), prominent events during deglaciation, and transition into the Holocene. The available speleothem δ 18 Occ time-series are investigated by binning and normalizing at 25-year and 200-year time windows over the Holocene. Important Holocene climatic oscillations are discussed, such as the 8.2 ka, 4.2 ka and 0.7 ka (the Little Ice Age) Before Present events. Common trends in the standardized anomalies are tested against different climate archives. Finally, recommendations for future speleothem-based research in the region are given along with comments on the utility and completeness of the SISAL database.

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Eastern Mediterranean hydroclimate reconstruction over the last 3600 years based on sedimentary n-alkanes, their carbon and hydrogen isotope composition and XRF data from the Gialova Lagoon, SW Greece

Cited by 43 publications

References 124 publications

Reconstruction of palaeoenvironmental variability based on an inter-comparison of four lacustrine archives on the Peloponnese (Greece) for the last 5000 years

Reconstruction of palaeoenvironmental variability based on an inter-comparison of four lacustrine archives on the Peloponnese (Greece) for the last 5000 years

Anthropogenic Changes in a Mediterranean Coastal Wetland during the Last Century—The Case of Gialova Lagoon, Messinia, Greece

Speleothems from the Middle East: An Example of Water Limited Environments in the SISAL Database

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