Palaeoecological setting of the western Black Sea area during the last 15000 years

Atanassova, Juliana

doi:10.1191/0959683605hl832rp

Cited by 53 publications

(30 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this regard, the late glacial and Holocene fossil pollen records suggest that steppe persisted until between c. 8300 and 7920 cal. yr bp along the north‐west Black Sea coast and in the Lower Danube basin in north Bulgaria (Bozilova & Beug, 1994; Bozilova & Tonkov, 1998; Atanassova, 2005), but that temperate deciduous trees increased in abundance in these areas thereafter. Whereas this increase resulted in the occupation of coastal areas of Bulgaria by temperate deciduous wooded steppe, temperate deciduous woodlands apparently occupied the lower Danube Plain.…”

Section: Discussionmentioning

confidence: 99%

Holocene persistence of wooded steppe in the Great Hungarian Plain

Magyari

Chapman

Passmore

et al. 2010

Journal of Biogeography

183

172

View full text Add to dashboard Cite

show abstract

Section: Discussionmentioning

confidence: 99%

Holocene persistence of wooded steppe in the Great Hungarian Plain

Magyari

Chapman

Passmore

et al. 2010

Journal of Biogeography

183

172

View full text Add to dashboard Cite

show abstract

“…Since then, a number of studies have documented the Holocene dinocyst record (e.g. Bozilova et al, 1997;Mudie et al, 2002Mudie et al, , 2004Atanassova, 2005). Furthermore, in order to characterise the exchanges between the Mediterranean-Marmara-Black Seas during the last 30 ka, in particular during the early Holocene, a multiproxy approach has documented outflow phases of the Black Sea (e.g.…”

Section: Dinocysts In the Caspian Sea And Neighbouring Seasmentioning

confidence: 99%

River inflow and salinity changes in the Caspian Sea during the last 5500 years

Leroy

Marret

Gibert

et al. 2007

Quaternary Science Reviews

119

View full text Add to dashboard Cite

Pollen, spores and dinoflagellate cysts have been analysed on three sediment cores (1.8 to 1.4 m-long) taken from the south and middle basins of the Caspian Sea. A chronology available for one of the cores is based on calibrated radiocarbon dates (ca 5.5-0.8 cal. ka BP). The pollen and spores assemblages indicate fluctuations between steppe and desert. In addition there are some outstanding zones with a bias introduced by strong river inflow. The dinocyst assemblages change between slightly brackish (abundance of Pyxidinopsis psilata and Spiniferites cruciformis) and more brackish (dominance of Impagidinium caspienense) conditions. During the second part of the Holocene, important flow modifications of the Uzboy River and the Volga River as well as salinity changes of the Caspian Sea, causing sea-level fluctuations, have been reconstructed. A major change is suggested at ca 4 cal. ka BP with the end of a high level phase in the south basin. Amongst other hypotheses, this could be caused by the end of a late and abundant flow of the Uzboy River (now defunct), carrying to the Caspian Sea either meltwater from higher latitudes or water from the Amu-Daria. A similar, later clear phase of water inflow has also been observed from 2.1 to 1.7 cal. ka BP in the south basin and probably also in the north of the middle basin.

show abstract

“…While the last brackishmarine transition at ∼ 8.3 ka BP is well studied in dinocyst and other records (Wall et al, 1973;Mudie et al, 2004;Atanassova, 2005;Bahr et al, 2006Bahr et al, , 2008Kwiecien et al, 2009;Marret et al, 2009;Buynevich et al, 2011;Bradley et al, 2012;Shumilovskikh et al, 2012Shumilovskikh et al, , 2013bFilipovaMarinova et al, 2013), details on the marine-brackish transition that occurred after the last interglacial, as well as of the sea-surface conditions of the Black Sea during the MIS 3, are largely unknown (Badertscher et al, 2011). Dinocyst studies for the Eemian suggest a sea-surface salinity in the Black Sea of ∼ 30 (Shumilovskikh et al, 2013b), whereas studies for the late glacial reveal freshwater/brackish conditions (see references above).…”

mentioning

confidence: 99%

Orbital- and millennial-scale environmental changes between 64 and 20 ka BP recorded in Black Sea sediments

Shumilovskikh¹,

Fleitmann

Nowaczyk

et al. 2014

Clim. Past

View full text Add to dashboard Cite

Abstract. High-resolution pollen and dinoflagellate cyst records from sediment core M72/5-25-GC1 were used to reconstruct vegetation dynamics in northern Anatolia and surface conditions of the Black Sea between 64 and 20 ka BP. During this period, the dominance of Artemisia in the pollen record indicates a steppe landscape and arid climate conditions. However, the concomitant presence of temperate arboreal pollen suggests the existence of glacial refugia in northern Anatolia. Long-term glacial vegetation dynamics reveal two major arid phases ∼ 64-55 and 40-32 ka BP, and two major humid phases ∼ 54-45 and 28-20 ka BP, correlating with higher and lower summer insolation, respectively. Dansgaard-Oeschger (D-O) cycles are clearly indicated by the 25-GC1 pollen record. Greenland interstadials are characterized by a marked increase in temperate tree pollen, indicating a spread of forests due to warm/wet conditions in northern Anatolia, whereas Greenland stadials reveal cold and arid conditions as indicated by spread of xerophytic biomes. There is evidence for a phase lag of ∼ 500 to 1500 yr between initial warming and forest expansion, possibly due to successive changes in atmospheric circulation in the North Atlantic sector. The dominance of Pyxidinopsis psilata and Spiniferites cruciformis in the dinocyst record indicates brackish Black Sea conditions during the entire glacial period. The decrease of marine indicators (marine dinocysts, acritarchs) at ∼ 54 ka BP and increase of freshwater algae (Pediastrum, Botryococcus) from 32 to 25 ka BP reveals freshening of the Black Sea surface water. This freshening is possibly related to humid phases in the region, to connection between Caspian Sea and Black Sea, to seasonal freshening by floating ice, and/or to closer position of river mouths due to low sea level. In the southern Black Sea, Greenland interstadials are clearly indicated by high dinocyst concentrations and calcium carbonate content, as a result of an increase in primary productivity. Heinrich events show a similar impact on the environment in the northern Anatolia/Black Sea region as Greenland stadials.

show abstract

Palaeoecological setting of the western Black Sea area during the last 15000 years

Cited by 53 publications

References 13 publications

Holocene persistence of wooded steppe in the Great Hungarian Plain

Holocene persistence of wooded steppe in the Great Hungarian Plain

River inflow and salinity changes in the Caspian Sea during the last 5500 years

Orbital- and millennial-scale environmental changes between 64 and 20 ka BP recorded in Black Sea sediments

Contact Info

Product

Resources

About