IV.—The Glacial Period in Eastern America
نویسندگان
چکیده
منابع مشابه
Post-glacial history of Trillium grandiflorum (Melanthiaceae) in eastern North America: inferences from phylogeography.
Dispersal and migration are important processes affecting the evolutionary history and genetics of species. Here we investigate post-glacial migration and gene flow in Trillium grandiflorum (Melanthiaceae), a wide-ranging, forest herb from eastern North America. Using phylogeographic approaches, we examined cpDNA and allozyme diversity in 35 populations of T. grandiflorum sampled from throughou...
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The transition from full glacial to interglacial conditions along the southern margin of the Laurentide ice sheet resulted in dramatic changes in landscapes and biotic habitats. Strata and landforms resulting from the Wisconsin Episode of glaciations in the area directly west of Lake Superior indicate a context for late Pleistocene biota (including human populations) connected to ice margins, p...
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چکیده: یکی از دوره های مهم تاریخی ایران به لحاظ تأمین استقلال ملی مذهبی و حتی تأثیر آن بر فرهنگ و مذهب ایرانیان، دوره صفویه است. رسمیت دادن و رواج مذهب شیعه توسط شاه اسماعیل اول، یکی از مهمترین اقدامات این دولت محسوب می شود. بنابراین برای اجرای این سیاست، وی منصب صدارت را به عنوان منصبی مذهبی- حکو متی ایجاد کرد .این منصب از دوره ی تیموریان ایجاد شده بود ولی در اواخر این دوره اهمیت بیشتری یافت...
15 صفحه اولPaleotopographic reconstructions of the eastern outlets of glacial Lake Agassiz
Paleotopographic reconstructions of the eastern outlets of glacial Lake Agassiz provide a foundation for understanding the complex manner in which terrain morphology controlled the routing of overflow through the eastern outlets during the lake's Nipigon Phase (ca. 9400-8000 ''^C years BP) and for understanding the causes of outlet-driven declines in lake level during that period. Although flow...
متن کاملComparative phylogeography of unglaciated eastern North America.
Regional phylogeographical studies involving co-distributed animal and plant species have been conducted for several areas, most notably for Europe and the Pacific Northwest of North America. Until recently, phylogeographical studies in unglaciated eastern North America have been largely limited to animals. As more studies emerge for diverse lineages (including plants), it seems timely to asses...
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ژورنال
عنوان ژورنال: Geological Magazine
سال: 1879
ISSN: 0016-7568,1469-5081
DOI: 10.1017/s0016756800157292