Sedimentary biomarkers reaffirm human impacts on northern Beringian ecosystems during the Last Glacial period
نویسندگان
چکیده
منابع مشابه
Evidence for cryptic northern refugia in the last glacial period in Cryptomeria japonica.
BACKGROUND AND AIMS Distribution shifts and natural selection during past climatic changes are important factors in determining the genetic structure of forest species. In particular, climatic fluctuations during the Quaternary appear to have caused changes in the distribution ranges of plants, and thus strongly affected their genetic structure. This study was undertaken to identify the respons...
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Department of Geography, University of Wisconsin-Madison, Madison, WI 53706, USA, Department of Ecology and Evolutionary Biology, University of California Santa Cruz, Santa Cruz, CA 95064, USA, Department of Anthropology, The Pennsylvania State University, University Park, PA 16802, USA, Department of Social Sciences, Flagler College, St. Augustine, FL 32084, USA, Alaska Quaternary Center, Univ...
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[1] More than a decade ago, ice core records from Greenland revealed that the last glacial period was characterized by abrupt climate changes that recurred on millennial time scales. Since their discovery, there has been a large effort to determine whether these climate events were a global phenomenon or were just confined to the North Atlantic region and also to reveal the mechanisms that were...
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Recent paleoclimate reconstructions have challenged the traditional view that Northern Hemisphere insolation and associated feedbacks drove synchronous global climate and ice-sheet volume during the last glacial cycle. Here we focus on the response of the Patagonian Ice Sheet, and demonstrate that its maximum expansion culminated at 28,400 ± 500 years before present (28.4 ± 0.5 ka), more than 5...
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High resolution benthic oxygen isotope records combined with radiocarbon datings, from cores retrieved in the North, Equatorial, and South Atlantic are used to establish a reliable chronostratigraphy for the last 60 ky. This common temporal framework enables us to study the timing of the sub-Milankovitch climate variability in the entire surface Atlantic during this period, as re#ected in plank...
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ژورنال
عنوان ژورنال: Boreas
سال: 2020
ISSN: 0300-9483,1502-3885
DOI: 10.1111/bor.12449