气候变化领域集成服务门户(CCPortal): Latest Cretaceous (Maastrichtian) climate of the Koryak Upland of North-East Russia based on a quantitative analysis of a palaeo-polar flora

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DOI	10.1016/j.palaeo.2020.109997
	Latest Cretaceous (Maastrichtian) climate of the Koryak Upland of North-East Russia based on a quantitative analysis of a palaeo-polar flora
	Zolina А.А.; Golovneva L.B.; Spicer R.A.
发表日期	2020
ISSN	0031-0182
卷号	560
英文摘要	We describe fossil plant assemblages from the late Maastrichtian Kakanaut Formation of the Koryak Upland, North-East of Russia, which represent a high (75oN) palaeolatitude flora. The flora contains about 40 species, including liverworts, horsetails, ferns, cycadophytes, ginkgos, conifers and angiosperms. Angiosperms and conifers predominate and, unusually, the flora contains typical Cretaceous taxa admixed with elements that are more characteristic of the Paleocene. Reconstruction of the palaeoclimate in the Kakanaut area was made using the Climate Leaf Analysis Multivariate Program (CLAMP) employing a recently developed calibration that yields 23 different climate variables. Analysis was made based on 21 morphotypes of woody dicotyledonous plants from the Kakanaut flora. The analysis indicated a mean annual temperature of 12.2 ± 2.0 °C, a warmest month mean temperature of 20.6 ± 2.5 °C, a coldest month mean temperature of 4.8 ± 3.2 °C. The growing season lasted approximately 7 months, during which there was almost 1 m of precipitation. This and other indicators (relative humidity, vapour pressure deficit and potential evapotranspiration) all suggest a year-round humid regime. The winter temperatures suggest occasional mild frosts in this near sea level setting, so that at higher elevations freezing conditions would have been more persistent. These results throw new light on the living and breeding conditions of diverse latest Cretaceous Arctic dinosaur populations as represented by numerous skeletal and egg remains associated with the plants. © 2020 Elsevier B.V.
英文关键词	Climate Leaf Analysis Multivariate Program; Dinosaurs; Maastrichtian; North-East of Russia; Palaeoclimate
语种	英语
scopus关键词	angiosperm; climate change; climate variation; Cretaceous; dinosaur; flora; fossil assemblage; Maastrichtian; Paleocene; paleoclimate; paleolatitude; precipitation (climatology); quantitative analysis; reconstruction; seasonal variation; skeletal remains; Arctic; Koryak Highlands; Russian Federation; Coniferophyta; Cycadophyta; Dinosauria; Equisetales; Filicophyta; Magnoliophyta; Marchantiophyta
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/150308
作者单位	Komarov Botanical Institute, Russian Academy of Sciences, 197376, prof. Popov str. 2, St. Petersburg, Russian Federation; CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Xishuangbanna, Yunnan 666303, China; School of Environment, Earth and Ecosystem Sciences, The Open UniversityMK7 6AA, United Kingdom
推荐引用方式 GB/T 7714	Zolina А.А.,Golovneva L.B.,Spicer R.A.. Latest Cretaceous (Maastrichtian) climate of the Koryak Upland of North-East Russia based on a quantitative analysis of a palaeo-polar flora[J],2020,560.
APA	Zolina А.А.,Golovneva L.B.,&Spicer R.A..(2020).Latest Cretaceous (Maastrichtian) climate of the Koryak Upland of North-East Russia based on a quantitative analysis of a palaeo-polar flora.Palaeogeography, Palaeoclimatology, Palaeoecology,560.
MLA	Zolina А.А.,et al."Latest Cretaceous (Maastrichtian) climate of the Koryak Upland of North-East Russia based on a quantitative analysis of a palaeo-polar flora".Palaeogeography, Palaeoclimatology, Palaeoecology 560(2020).