Late Pleistocene to Holocene paleoenvironmental changes in the NW Black Sea

Briceag, Andrei; Yanchilina, Anastasia; Ryan, William B. F.; Stoica, Marius

doi:10.1002/jqs.3083

Cited by 14 publications

(3 citation statements)

References 61 publications

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“…The emerged shelf and low coastal plains were dominated by the landscape similar to periglacial ones. As follows from the available data (Shimkus et al 1977;Degens and Ross 1972;Briceag et al 2019), the cooling in the region reached its maximum at 22-23 ka BP.…”

Section: New Euxinian Epoch Of Regression and Transgressionmentioning

confidence: 82%

Environmental Variability Of The Ponto-Caspian And Mediterranean Basins During The Last Climatic Macrocycle

Yanina

2020

GES

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This paper reviews reconstructions of the the evolution of the Ponto-Caspian basin system to certain parts of the Pontian-Mediterranean system in order to analyze their correlation and response of the systems to the global climate change. The Ponto–Caspian and Mediterranean basins belong to different types of water basins and evolved differently in the Late Pleistocene responding in different ways to the global climate change. The paleogeographic reconstructions and correlation analysis of the Late Pleistocene events (within the last climatic macrocycle) made it possible to view the evolution of the basins as parts of a single system allowing to identify certain specific features and patterns in their functioning. The study is based on the analysis and integration of the data published by numerous researchers including the author of the paper and numerous colleagues from many countries who have been studying the paleogeography of the Ponto-Caspian and Mediterranean regions in the Late Pleistocene.

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Section: New Euxinian Epoch Of Regression and Transgressionmentioning

confidence: 82%

Environmental Variability Of The Ponto-Caspian And Mediterranean Basins During The Last Climatic Macrocycle

Yanina

2020

GES

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“…The reasons for the lineage separation within Ponto‐Caspian trout are discussed in Ninua et al ( 2018 ). In fact, there are at least three almost equidistant mitochondrial lineages in the Black Sea trout, including S. rizeensis , and those lineages could emerge in case of temporary impenetrability of the Black Sea area, perhaps as a result of ice covering a large part of its surface during the periods of glaciation (Briceag et al, 2019 ) or alternatively during interglacials when Black Sea water was brackish and oxygen deficient due to impact of Mediterranean water inflow (Hoyle et al, 2021 ; Wegwerth et al, 2019 ). The cause for the switch to an exclusively freshwater life history in S. rizeensis remains unclear.…”

Section: Discussionmentioning

confidence: 99%

Genetic structure of Ponto‐Caspian trout populations shows gene flow among river drainages and supports resident Salmo rizeensis as a genetically distinct taxon

Ninua

Tarkhnishvili

Anderson

2023

Ecology and Evolution

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To assess the genetic structure of Ponto‐Caspian brown trout (Salmo trutta complex) populations, we analyzed both mitochondrial DNA sequences and genotypes at 10 microsatellite loci of fish caught in the Black Sea and from nine river catchments in Georgia, flowing into either the Black or Caspian seas. The results show that: (1) there is substantial genetic differentiation among Ponto‐Caspian trout populations, both among the populations of different nominal species and within those of the same species; (2) the genetic distance between conspecific populations from the Black and Caspian Sea basins exceeds that among the populations within the same basin. Moreover, within drainages, genetic distance correlates with the geographic distance; (3) the Black Sea itself is not a barrier to gene flow among the watersheds draining into the Black Sea; (4) some populations in the headwaters of the rivers draining into the Black Sea Basin fall out of this pattern and likely form a separate, non‐anadromous (resident) taxon, previously described from northeastern Turkey as Salmo rizeensis. This hypothesis is supported by mitochondrial DNA phylogeny. The presence of both anadromous and resident populations in a single river basin calls for a substantial re‐thinking of speciation patterns and taxonomy of Eurasian brown trout.

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“…The presence of Khvalinian transgression in the Black Sea was defined based on mollusc species in the Volga River and Kushum River deltas with increased salinity values and a sea level rise of about 20 m (Svitoch, 2010). The sudden increase in salinity on the northern coasts of the Black Sea and the Mediterranean Sea-based ostracod records indicate that the first sea level rise occurred around 9390 BP (Briceag et al, 2019).…”

Section: Sea Level Changes Around the Black Seamentioning

confidence: 99%

Traces of Mediterranean origin Holocene transgression in the drainage basin of Riva-Çayağzı Creek of the Black Sea (northeastern İstanbul-Turkey)

Dogan¹,

Karakaş²,

Nazik³

et al. 2020

Turkish J Earth Sci

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The Riva-Çayağzı Creek (İstanbul, Black Sea) pours into the Black Sea from the coasts of Turkey. In the drainage basin of this creek, both deep and shallow drillings were undertaken, and the minimum thickness of Holocene stratigraphy was determined as 30 m. The Holocene young deposits are mainly composed of fine-grained sediments and clay, which has the most prominent thickness. The energy of water during the sedimentation process was low and stagnant in the Riva-Çayağzı Creek basin. When the marine mollusc fossils obtained from the shallow boring cores are evaluated, it can be deduced that the sea level in the study area had drawdown to -21 m in elevation. Ostracod, foraminifer, and diatom fossils determined in all cores of shallow borings are the same or similar to Mediterranean origin euryhaline forms. According to this outcome, the presence of brackish water in the study area is the result of the sea level rise that occurred at ca. 9.4 ka due to the Mediterranean origin fluctuations passing through the Dardanelles and Bosphorus straits into the Black Sea. Thus, it is understood that the sea level entered from the present Riva (İstanbul)-Black Sea coastline to at least 13 km south of the Çayağzı Creek drainage basin. The Early Holocene transgression has been defined for the first time here in the specific location of the Black Sea coast of Turkey. Accordingly, in the Riva-Çayağzı Creek basin, a lagoon sedimentation environment with low energy and stagnant water, having mainly brackish water with partial seasonal change and sea connection, was determined.

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Late Pleistocene to Holocene paleoenvironmental changes in the NW Black Sea

Cited by 14 publications

References 61 publications

Environmental Variability Of The Ponto-Caspian And Mediterranean Basins During The Last Climatic Macrocycle

Environmental Variability Of The Ponto-Caspian And Mediterranean Basins During The Last Climatic Macrocycle

Genetic structure of Ponto‐Caspian trout populations shows gene flow among river drainages and supports resident Salmo rizeensis as a genetically distinct taxon

Traces of Mediterranean origin Holocene transgression in the drainage basin of Riva-Çayağzı Creek of the Black Sea (northeastern İstanbul-Turkey)

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