N. S. Zdravchev, A. V. Bobrov, M. S. Romanov, L. M. Lebedev, A. N. Sorokin, A. S. Timchenko, A. A. Mikhaylova, N. D. Vasekha, M. V. Kandidov, K. V. Kuptsov, P. S. Iovlev
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引用次数: 0
Abstract
Reconstruction of the dispersal history and formation of modern ranges of various taxa is one of the actual problems of modern biogeography. Molecular genetic biogeography based on the analysis of phylogenetic relationships of taxa of different levels began to develop actively at the end of the XX century. Currently, this method is the most objective and represents the basis for reconstruction of scenarios of the origin and dispersal of various groups of plants. Due to recent transformation of views on the phylogenetic relationships of Pandanales, the reconstruction of tracks and modes of dispersal of representatives of the order Pandanales becomes an actual task. Representatives of all 5 families of Pandanales sensu APG IV were selected for the study and two cladograms were constructed. Based on the molecular-genetic cladistic method the region of hypothetical origin and probable dispersal scenarios of the families of the order Pandanales were determined. The order Pandanales is treated as originated in Laurasia and its differentiation began on the territory of Tibet. Dispersal of the representatives of the basal family Velloziaceae took place by long-distance transport via the Bering Land Bridge to South America (approximately 115 Mya). Velloziaceae dispersed in the New World vicariously in South America, then it was distributed to sub-Atlantic Africa by long-distance transport, and finally also vicariously to the east, south and north of the continent. It is shown, that the modern range of the representatives of rest Pandanales is the result of both types of dispersal – vicariously and long-distance transport.
重建各种类群的扩散历史和现代分布区的形成是现代生物地理学的实际问题之一。二十世纪末,基于不同层次类群系统发生关系分析的分子遗传生物地理学开始积极发展。目前,这种方法最为客观,是重建各类植物起源和扩散情景的基础。由于近年来对潘丹科植物系统发育关系的看法发生了变化,重建潘丹科植物的分布轨迹和模式成为一项实际任务。研究选取了 Pandanales sensu APG IV 全部 5 个科的代表,并构建了两个支系图。根据分子遗传学支系法,确定了潘丹目各科的假定起源区域和可能的扩散情况。潘丹目被认为起源于劳拉西亚,其分化始于西藏境内。基干科 Velloziaceae 的代表通过白令陆桥长途运输到南美洲(约 115 Mya)。绒毛纲植物从南美洲向新大陆扩散,然后通过长途运输传播到非洲次大西洋地区,最后又向非洲大陆的东部、南部和北部扩散。研究表明,其余番杏科植物的现代分布范围是两种传播方式--代际传播和远距离传播--的结果。
期刊介绍:
Journal “GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY” is founded by the Faculty of Geography of Lomonosov Moscow State University, The Russian Geographical Society and by the Institute of Geography of RAS. It is the official journal of Russian Geographical Society, and a fully open access journal. Journal “GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY” publishes original, innovative, interdisciplinary and timely research letter articles and concise reviews on studies of the Earth and its environment scientific field. This goal covers a broad spectrum of scientific research areas (physical-, social-, economic-, cultural geography, environmental sciences and sustainable development) and also considers contemporary and widely used research methods, such as geoinformatics, cartography, remote sensing (including from space), geophysics, geochemistry, etc. “GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY” is the only original English-language journal in the field of geography and environmental sciences published in Russia. It is supposed to be an outlet from the Russian-speaking countries to Europe and an inlet from Europe to the Russian-speaking countries regarding environmental and Earth sciences, geography and sustainability. The main sections of the journal are the theory of geography and ecology, the theory of sustainable development, use of natural resources, natural resources assessment, global and regional changes of environment and climate, social-economical geography, ecological regional planning, sustainable regional development, applied aspects of geography and ecology, geoinformatics and ecological cartography, ecological problems of oil and gas sector, nature conservations, health and environment, and education for sustainable development. Articles are freely available to both subscribers and the wider public with permitted reuse.