The occurrence of a new species of &amp;lt;i&amp;gt;Gomphocythere&amp;lt;/i&amp;gt; (Ostracoda, Limnocytheridae) in the Holocene of SE Turkey: the northernmost record for the genus

Boomer, Ian; Gearey, Benjamin

doi:10.1144/0262-821x09-011

Cited by 8 publications

(3 citation statements)

References 7 publications

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“…Lastly, we did not observe representatives of the genus Gomphocythere in the Sağlık II core, although Boomer and Gearey (2010) record specimens in the samples from Domuztepe, a Late Neolithic wetland site located in the eastern part of the Kahramanmaraş valley (see Fig. 1)…”

Section: Faunal Reconstruction Of the Lakementioning

confidence: 78%

Late Glacial to mid Holocene lacustrine ostracods from southern Anatolia, Turkey: A palaeoenvironmental study with pollen and stable isotopes

Sekeryapan

Streurman

Plicht

et al. 2020

CATENA

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This study investigates the ostracod assemblages obtained from a sediment core from a paleolake in the Sağlık plain in south-central Anatolia (Turkey). In addition to ostracods, oxygen and.carbon stable isotopes of ostracod shells were analysed and pollen analysis of the core undertaken. The sediments comprise the Late Glacial and early Holocene interval with an approximate 14 C age from 18,000 to 6700 14 C years ago, after applying a correction for reservoir effects. Eight podocopid ostracod species were recorded, among them Cyprideis torosa and Candona sp. which were used for stable oxygen and carbon isotope analyses. C. torosa dominated during the Late Glacial while Candona sp. dominated most of the early Holocene assemblages. Both forms of C. torosa disappear abruptly close to the onset of the Holocene. Around this time, ostracod preservation was dominated by many black coloured valves and carapaces.Based on ostracod assemblage data and isotope analyses, relatively wet phases were identified for the Older Dryas, Younger Dryas, and during the mid-Holocene at around 7500 14 C years ago. Relatively dry phases were identified during the Allerød interstadial, at the end of YD, and at about 6700 14 C years ago. An oligotrophic and brackish lake persisted until shortly before the end of the YD, when, according to the δ 13 C values, conditions gradually became more eutrophic. The sudden disappearance of C. torosa at the end of the YD seems the consequence of anoxic bottom water conditions and/or eutrophication.Alternating wet and dry phases characterize the early Holocene, with a longer period of wet and oligotrophic conditions around 7500 14 C years ago (ca. 8300 calBP). Ostracod assemblages and isotope records indicate a dry and more productive lake around 6700 14 C years ago (ca. 7550 calBP).

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Section: Faunal Reconstruction Of the Lakementioning

confidence: 78%

Late Glacial to mid Holocene lacustrine ostracods from southern Anatolia, Turkey: A palaeoenvironmental study with pollen and stable isotopes

Sekeryapan

Streurman

Plicht

et al. 2020

CATENA

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“…These species are most common and characteristic for a sublittoral zone of a freshwater lake (e.g. Park & Martens ; Boomer & Gearey ; Cohen et al . ).…”

Section: Resultsmentioning

confidence: 99%

Holocene lake sediments from the Faiyum Oasis in Egypt: a record of environmental and climate change

Marks

Salem

Welc

et al. 2017

Boreas

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, J. 2018 (January): Holocene lake sediments from the Faiyum Oasis in Egypt: a record of environmental and climate change. Boreas, Vol. 47,.1111/bor.12251. ISSN 0300-9483.The Qarun Lake in the Faiyum Oasis (Egypt) provides a unique record of Holocene environmental and climate change in an arid area largely devoid of fossil proxy records. Multiple lithological, palaeontological and geochemical proxies and 32 radiocarbon dates from the 26-m-long core FA-1 provide a time series of the lake's transformation. Our results confirm that a permanent lake appeared in the Holocene at c. 10 cal. ka BP. The finely laminated lake sediments consist of diatomite, in which diatoms and ostracods together with lower concentrations of ions indicate a freshwater environment at the end of the early and middle Holocene. This freshwater supply was closely associated with regular inflows of the Nile water during flood seasons, when the Intertropical Convergence Zone (ITCZ) migrated northwards in Africa, although it has probably never reached the Faiyum Oasis. Local rainfall, possibly connected with a northern atmospheric circulation, may have been important during winter. Several phases in the lake's evolution are recognized, represented by oscillations between deep open freshwater conditions during more humid climate and shallow fresh to brackish water during drier episodes. After a long freshwater phase, the lake setting has become more brackish since c. 6.2 cal. ka BP as indicated by diatoms and increasing contents of evaporite ions in the sediment. This clearly shows that since that time the lake has occasionally become partly desiccated. This is a result of reduced discharge of the Nile. In the late Holocene the lake was mostly brackish and then gradually turned into a saline lake. This natural process was interrupted about 2.3 cal. ka BP when a man-made canal facilitated water inflow from the Nile. The examined FA-1 core can be used as a reference age model of climate change in the Holocene and its impact on the development and decline of ancient civilizations in northeastern Africa. Leszek Marks

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“…Based on these reports (e.g., Martens & Savatenalinton 2011;Karanovic 2012), the genus seems to be almost restricted to the African region. The northern most records of the genus are the living species G. ortali Martens, 1993 from Israel's River Dan (Martens 1993) and the Holocene fossil species G. geareyi Boomer, 2010 from Domuztepe, Kahramanmaraş in south-east Turkey (Boomer & Gearey 2010).…”

Section: Introductionmentioning

confidence: 99%

Gomphocythere besni n. sp. (Crustacea, Ostracoda) from a man-made pool (Adıyaman, Turkey)

Külköylüoğlu¹,

Yavuzatmaca²,

Cabral³

et al. 2015

Zootaxa

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We describe a new species (Gomphocythere besni n. sp.) from the Tavaş man-made pool in Besni town (Adıyaman, Turkey). The species has several differences from its congeners in furcal structures (forked organ, seta of caudal ramus), numbers of setae on maxillula and maxillular palp, particular ornamentation with up to eight fossae in each mesh of the reticulation and in the presence of two types of lateral pore-canals (single pore opening with a sensillum and sieve plates) on the carapace. The finding of the new species extends the known geographical distribution of the living forms of the genus further to the North. The new species was found from relatively cool (16.6 ºC) and medium oxygenated waters (7.36 mg/L) in a mixture of sand and gravel substrate. Details about its ecology and taxonomic status are also compared and discussed with other species of the same genus.

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The occurrence of a new species of <i>Gomphocythere</i> (Ostracoda, Limnocytheridae) in the Holocene of SE Turkey: the northernmost record for the genus

Cited by 8 publications

References 7 publications

Late Glacial to mid Holocene lacustrine ostracods from southern Anatolia, Turkey: A palaeoenvironmental study with pollen and stable isotopes

Late Glacial to mid Holocene lacustrine ostracods from southern Anatolia, Turkey: A palaeoenvironmental study with pollen and stable isotopes

Holocene lake sediments from the Faiyum Oasis in Egypt: a record of environmental and climate change

Gomphocythere besni n. sp. (Crustacea, Ostracoda) from a man-made pool (Adıyaman, Turkey)

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