Pollen, ostracod and stable isotope records of palaeoenvironment and climate: Upper Miocene and Pliocene of the Çankırı Basin (Central Anatolia, Turkey)

Yavuz, Nurdan; ÇULHA, Gönül; Demirer, Şükrü Sinan; Utescher, Torsten; Aydın, Ayşegül

doi:10.1016/j.palaeo.2016.04.023

Cited by 21 publications

(12 citation statements)

References 62 publications

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“…A number of fresh-and brackish water lakes existed during this time in Anatolia and may have acted as suitable environments for Theodoxus (e.g. Denizli, Söke, Karacasu, Çameli, Eşen, Baklan, Acigöl, Burdur, Tuz and Çankırı: Alçiçek, 2010;Gürbüz & Kazancı, 2015;Yavuz, Culha, Demirer, & Aydın, 2017). At the end of the MSC, in the Early Pliocene, Anatolia became more isolated due to the rising sea level in the Mediterranean (Karakitsios et al, 2017;Popov et al, 2006;de la Vara, van Baak, Marzocchi, Grothe, & Meijer, 2016).…”

Section: Miocene-pliocene Transitionmentioning

confidence: 99%

Contributions of biogeographical functions to species accumulation may change over time in refugial regions

Sands

Sereda

Stelbrink

et al. 2019

Journal of Biogeography

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Aim Elevated biodiversity is the result of the cradle, museum or sink functions. The contributions of these three functions to species accumulation and their changes through time remain unknown for glacial refugia. Additionally, our understanding of the role these functions played during pre‐glacial periods is limited. We test for changes in contributions of functions through time leading to the current diversity patterns using a model refugium and taxon. Location Anatolia, Western Palaearctic. Taxon Freshwater neritid snails (genus Theodoxus). Methods Assessments were made to define molecular operational taxonomic units (MOTUs) for Theodoxus and reaffirm the genus as a suitable model taxon with elevated interspecific diversity in noted glacial refugia. Thereafter, we constructed a time‐calibrated multilocus Bayesian phylogeny of mtDNA and nDNA by using both fossil data and published substitution rates. Ancestral area estimation was performed on the phylogeny to define the contribution of the functions through time. Results Accumulation of Theodoxus diversity in Anatolia over the Miocene–Pliocene transition is attributed to the museum function, but its contribution was small as only few divergence events occurred. The cradle function dominated during the Pliocene and Early Pleistocene, when most interspecific diversity built up and extant lineages in Anatolia were established. The sink function acted from the Middle Pleistocene to present‐day, but with only a small contribution to the total extant Anatolian interspecific diversity. Main conclusion Our results do not entirely mitigate the role glacial cycles played in species accumulation, but highlight Ice Ages may have been less effective in forcing temperate aquatic interspecific diversity into more opportune areas. The elevated diversity in refugia may rather be the result of earlier in situ diversification. Elevated interspecific diversity attributed to the legacy of glacially forced retreats may need to be re‐evaluated in cases where refugia have long and complex geological histories such as Anatolia. These results highlight the importance of considering species accumulation through a temporal perspective to adequately explain present‐day biodiversity patterns.

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Section: Miocene-pliocene Transitionmentioning

confidence: 99%

Contributions of biogeographical functions to species accumulation may change over time in refugial regions

Sands

Sereda

Stelbrink

et al. 2019

Journal of Biogeography

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“…Additionally, terrestrial and deltaic sediments deposited in Anatolia have a rich plant microfossil record. Many microfloras of these sediments have been described, and palaeoclimatic change from the Eocene to Miocene has been recorded in palynological studies (e.g., Akgün et al, 2007; Biltekin et al, 2015; Bouchal et al, 2017; Kayseri & Akgün, 2008; Kayseri‐Özer, 2014, 2017; Kayseri‐Özer, Akgün, Mayda, & Kaya, 2014; Kayseri‐Özer, Sözbilir, & Akgün, 2014; Yavuz, Culha, Demirer, Utescher, & Aydın, 2017).…”

Section: Introductionmentioning

confidence: 93%

Late Eocene to Late Miocene palaeoecological and palaeoenvironmental dynamics of the Ereğli‐Ulukışla Basin (Southern Central Anatolia)

et al. 2020

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The Ereğli‐Ulukışla Basin which is the focus of this study is situated at the south‐eastern edge of the Central Anatolian Cenozoic basins (Tuzgölü, Haymana, Çankırı‐Çorum, and Sivas), and is divided into two sub‐basins, the Aktoprak (AT) and Hacıbekirli‐Tepeköy (HT). These sub‐basins mainly comprise a stratigraphically discontinuous and laterally variable series, represented by ‘fluvio‐lacustrine’ siliciclastic and carbonate sediments deposited over a wide range of environments, including meandering and braided rivers, coastal fluvial and fan deltas, mixed carbonate‐siliciclastic shores, dry lake flats, and coal‐bearing swamps. In the Ereğli‐Ulukışla Basin, higher palaeotopographic conditions existed in the AT because of the uplift of the Central Anatolian Plateau during late Middle Miocene (Serravallian)‐early Late Miocene (Tortonian) and the subsequent uplift of the Taurus Mountains in the latest Miocene (Messinian) as deduced in the Tepeköy region (northeast) of the HT sub‐basin. Diversity and abundance of archaic pollen (Normapolles) in the pollen biostratigraphy decreased from the Eocene to Oligocene, while forms with advanced angiosperm morphology (post‐Normapolles), were observed with the increase in post‐Normapolles during the Miocene. The dominance of woody angiosperms in the pollen assemblages, and increasing variety and abundance of ‘open herbs’ and shrub pollen from the Early Miocene to Late Miocene defines an important change in flora. Furthermore, the palaeoclimatic conditions changed from humid‐subtropical to warm‐temperate during the sediment deposition in the Ereğli‐Ulukışla Basin. Recurrent arid phases during the Late Miocene are indicated by the deposition of reddish caliche conglomerates in broad dry lake flats (HT), and evaporites in local playa lakes (AT), respectively.

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“…Another controversial question is when the herbaceous vegetation indicating open environments expanded, because palaeobotanical studies carried out in other parts of Turkey, mostly in western areas, recorded dense arboreal plant taxa during the early and middle Miocene lato sensu (e.g., Benda, 1971;Akgün and Akyol, 1999;Akgün et al, 2000Akgün et al, , 2007Sancay et al, 2006;Kayseri and Akgün, 2008;Yavuz-Işık, 2008;Akkiraz, 2011;Akkiraz et al, 2011bAkkiraz et al, , 2012Biltekin, 2018). To date, an abrupt surge in the herbaceous plant cover has only been known from the Tortonian (late Miocene) (Akgün et al, 2000;Yavuz et al, 2017). However, pollen records defined in this study have indicated an opposing view and are in accordance with the conclusion of Strömberg et al (2007), who recognised herbaceous vegetation from the early Miocene onwards in Central Anatolia.…”

Section: Vegetation Dynamicsmentioning

confidence: 99%

Palaeontological evidence and sedimentary facies in a lower Miocene (Aquitanian) succession from the Bingöl minibasin (Sivas Basin), Central Anatolia

Akkiraz¹,

Kangal²,

Erdem³

et al. 2018

Turkish J Earth Sci

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Introduction The Miocene is an epoch in earth history before the development of the Northern Hemisphere ice sheet. It was characterised by transgression-regression events leading to the opening and closing of seawater in Europe (Rögl, 1998; Zachos et al., 2001; Meulenkamp and Sissingh, 2003). The early Miocene, which is the main subject of this study, is a critical period between Oligocene mainly "icehouse" climates and the middle Miocene climatic optimum (MMCO) (Flower and Kennet, 1994). Some authors indicated that relatively warm and ice-free conditions persisted during the early Miocene (Zachos et al., 1997; Mosbrugger et al., 2005). Conversely, other authors claimed that this warm period was stopped by several cooling and glaciation events, especially for the high latitudes (

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Pollen, ostracod and stable isotope records of palaeoenvironment and climate: Upper Miocene and Pliocene of the Çankırı Basin (Central Anatolia, Turkey)

Cited by 21 publications

References 62 publications

Contributions of biogeographical functions to species accumulation may change over time in refugial regions

Contributions of biogeographical functions to species accumulation may change over time in refugial regions

Late Eocene to Late Miocene palaeoecological and palaeoenvironmental dynamics of the Ereğli‐Ulukışla Basin (Southern Central Anatolia)

Palaeontological evidence and sedimentary facies in a lower Miocene (Aquitanian) succession from the Bingöl minibasin (Sivas Basin), Central Anatolia

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