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Ammonites and magnetostratigraphy of the Berriasian–Valanginian boundary deposits from eastern Crimea

Abstract

Euthymi, Crassicostatum and Callisto ammonite subzones, correlable with Paramimounum, Picteti, and Alpillensis subzones and probably with the Late Berriasian Otopeta Subzone of the Boissieri Standard Zone have been recognized in calcareous clays of the Berriasian-Valanginian boundary sequence in the Feodosiya district (eastern Crimea). The ammonite Leptoceras studeri (Ooster) suggests Late Berriasian to Early Valanginian age. Geomagnetic polarity indicates M16-M14r magnetozones. Therefore, the base of the Valanginian sequence in eastern Crimea should be placed within the M14r magnetozone.

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The Expansion of the Blackbird, Turdus Merula (Passeriformes, Muscicapidae), in the Steppe Zone of Ukraine

Abstract

The distribution of Turdus merula in the steppe zone of Ukraine is studied. The expansion of its range occurred in the steppe zone in artificial forestations, many of which have been established as early as the second half of the 19th century. However, the Blackbird expansion in the steppe zone of the Left-bank and Right-bank Ukraine started only in the middle of the 20th century, and in the Crimean steppe zone only to the end of the 20th century. Now, the southern border of this species’ range in the Left -bank Ukraine is almost at the northern coasts of the Black and Azov seas. In the Right-bank Ukraine its range is already at the seashore. In the Crimean steppe zone, the range expanded to the North of the forests of mountainous Crimea. The Blackbird populations farthest from the mountainous forests are found in artificial forest plantings at the northern and eastern borders of the peninsula. The species is absent from the western and north-western steppes of the Crimea.

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Rain-Call Dialects of the Chaffinch, Fringilla coelebs (Fringillidae), in Ukraine

Abstract

Four types of Chaffinch rain-calls were found in Ukraine: “rülsch” - a trill signal widely spread in Europe; “hui” - a whistle signal that occurs in North-Western and Central Europe; “Crimean” whistle signal known only from Crimean peninsula and “Caucasian” signal occurring in Caucasus, Asia Minor and Balkans. Sonograms of rendition versions are given for all of the call types. Distribution of dialects of Chaffinch rain-calls in Ukraine was examined. “Rülsch”- dialect occurs at most of the plane Ukraine and Carpathians. Owing to colonizing artificial afforestations in steppe zone this dialect population’s range expanded southward to the coast of the Black and Azov seas. “Hui”-dialect is spread in the Lower Danube region. At the North-Eastern Danube delta Chaffinch’s with “hui”- and “rülsch”- rain-calls are found together and a bird was found that uttered both signals alternately but hybrid signals were not registered. It may attest to recent invasion by “rülsch”- population of Chaffinch’s there. “Crimean” dialect is distributed in mountainous Crimea and in most of the Crimean steppe zone. “Caucasian” rain-call renditions are registered in cases of individual vagrant birds in eastern Crimea and Lower Danube region

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The calcareous nannofossils and magnetostratigraphic results from the Upper Tithonian–Berriasian of Feodosiya region (Eastern Crimea)

References Arkadiev V.V., Bogdanova T.N., Guzhikov A.Yu., Lobacheva S.V., Myshkina N.V., Platonov E.S., Savelyeva Yu.N., Shurekova O.V. & Yanin B.T. 2012: Berriasian stage of the Mountainous Crimea. LEMA Publishing House, Saint Petersburg, 1–472 (in Russian). Arkadiev V.V., Guzhikov A.Yu, Savelieva Yu.N., Feodorova A.A., Shurekova O.V., Bagaeva M.I., Grishchenko V.A. & Manikin A.G. 2015: New Data on Bio- and Magnetostratigraphy of the Upper Berriasian Zavodskaya Balka section (Eastern Crimea, Feodosiya). Bull. Saint Petersburg St. Univ., Geology 7

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Integrated stratigraphy of the Upper Barremian–Aptian sediments from the south-eastern Crimea

.V. 2011: New data on ammonoids of the genus Paraulacosphinctes from the upper Tithonian of the Mountainous Crimea. Stratigraphy and Geological Correlation , 19, 2, 238–242. Arkadiev V.V., Grishchenko V.A., Guzhikov A.Yu., Manikin A.G., Savelieva Yu.N., Feodorova A.A. & Shurekova O.V. 2017: Ammonites and magnetostratigraphy of the Berriasian–Valanginian boundary deposits from eastern Crimea: Geol. Carpath ., 68, 6, 505–516. Arkadiev V., Guzhikov A., Baraboshkin E., Savelieva J., Feodorova A., Shurekova O., Platonov E. & Manikin A. 2018: Biostratigraphy

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