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  • Articles  (90)
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  • Articles  (90)
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  • 1
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    Human origins and ancient human DNA (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-06-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cooper, A -- Rambaut, A -- Macaulay, V -- Willerslev, E -- Hansen, A J -- Stringer, C -- New York, N.Y. -- Science. 2001 Jun 1;292(5522):1655-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11388352" target="_blank"〉PubMed〈/a〉
    Keywords: Africa ; Animals ; Australia ; Base Sequence ; Biological Evolution ; DNA Damage ; DNA, Mitochondrial/*genetics ; Hominidae/*genetics ; Humans ; *Paleontology ; *Phylogeny ; Specimen Handling
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Spatial and temporal distribution of mass loss from the Greenland Ice Sheet since AD 1900 (2015)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2015-12-18
    Description: The response of the Greenland Ice Sheet (GIS) to changes in temperature during the twentieth century remains contentious, largely owing to difficulties in estimating the spatial and temporal distribution of ice mass changes before 1992, when Greenland-wide observations first became available. The only previous estimates of change during the twentieth century are based on empirical modelling and energy balance modelling. Consequently, no observation-based estimates of the contribution from the GIS to the global-mean sea level budget before 1990 are included in the Fifth Assessment Report of the Intergovernmental Panel on Climate Change. Here we calculate spatial ice mass loss around the entire GIS from 1900 to the present using aerial imagery from the 1980s. This allows accurate high-resolution mapping of geomorphic features related to the maximum extent of the GIS during the Little Ice Age at the end of the nineteenth century. We estimate the total ice mass loss and its spatial distribution for three periods: 1900-1983 (75.1 +/- 29.4 gigatonnes per year), 1983-2003 (73.8 +/- 40.5 gigatonnes per year), and 2003-2010 (186.4 +/- 18.9 gigatonnes per year). Furthermore, using two surface mass balance models we partition the mass balance into a term for surface mass balance (that is, total precipitation minus total sublimation minus runoff) and a dynamic term. We find that many areas currently undergoing change are identical to those that experienced considerable thinning throughout the twentieth century. We also reveal that the surface mass balance term shows a considerable decrease since 2003, whereas the dynamic term is constant over the past 110 years. Overall, our observation-based findings show that during the twentieth century the GIS contributed at least 25.0 +/- 9.4 millimetres of global-mean sea level rise. Our result will help to close the twentieth-century sea level budget, which remains crucial for evaluating the reliability of models used to predict global sea level rise.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kjeldsen, Kristian K -- Korsgaard, Niels J -- Bjork, Anders A -- Khan, Shfaqat A -- Box, Jason E -- Funder, Svend -- Larsen, Nicolaj K -- Bamber, Jonathan L -- Colgan, William -- van den Broeke, Michiel -- Siggaard-Andersen, Marie-Louise -- Nuth, Christopher -- Schomacker, Anders -- Andresen, Camilla S -- Willerslev, Eske -- Kjaer, Kurt H -- England -- Nature. 2015 Dec 17;528(7582):396-400. doi: 10.1038/nature16183.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centre for GeoGenetics, Natural History Museum, University of Copenhagen, Copenhagen 1350, Denmark. ; Department of Earth Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada. ; DTU Space-National Space Institute, Technical University of Denmark, Department of Geodesy, Kongens Lyngby 2800, Denmark. ; Geological Survey of Denmark and Greenland, Department of Marine Geology and Glaciology, Copenhagen 1350, Denmark. ; Department of Geoscience, Aarhus University, Aarhus 8000, Denmark. ; Bristol Glaciology Centre, University of Bristol, Bristol BS8 1SS, UK. ; Department of Earth and Space Science and Engineering, York University, Toronto, Ontario M3J 1P3, Canada. ; Institute for Marine and Atmospheric Research, Utrecht University, Utrecht 80005, The Netherlands. ; Department of Geosciences, University of Oslo, Oslo 0316, Norway.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26672555" target="_blank"〉PubMed〈/a〉
    Keywords: Climate Change/*statistics & numerical data ; Greenland ; History, 20th Century ; History, 21st Century ; *Ice Cover ; Models, Theoretical ; Observation ; Photography ; Reproducibility of Results ; Seawater/analysis ; *Spatio-Temporal Analysis ; Temperature
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 3
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    Evolution. The origin of insects (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2006-12-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Glenner, Henrik -- Thomsen, Philip Francis -- Hebsgaard, Martin Bay -- Sorensen, Martin Vinther -- Willerslev, Eske -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 2006 Dec 22;314(5807):1883-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centre for Ancient Genetics, Department of Evolutionary Biology, Biological Institute, University of Copenhagen, Universitetsparken 15, DK-2100 Copenhagen, Denmark. ewillerslev@bi.ku.dk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17185588" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptation, Biological ; Animals ; *Biological Evolution ; *Crustacea/anatomy & histology/classification/genetics/physiology ; Ecosystem ; Fossils ; Fresh Water ; *Insects/anatomy & histology/classification/genetics/physiology ; Phylogeny ; Seawater ; Time
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
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    Ancient biomolecules from deep ice cores reveal a forested southern Greenland (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-07-07
    Description: It is difficult to obtain fossil data from the 10% of Earth's terrestrial surface that is covered by thick glaciers and ice sheets, and hence, knowledge of the paleoenvironments of these regions has remained limited. We show that DNA and amino acids from buried organisms can be recovered from the basal sections of deep ice cores, enabling reconstructions of past flora and fauna. We show that high-altitude southern Greenland, currently lying below more than 2 kilometers of ice, was inhabited by a diverse array of conifer trees and insects within the past million years. The results provide direct evidence in support of a forested southern Greenland and suggest that many deep ice cores may contain genetic records of paleoenvironments in their basal sections.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2694912/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2694912/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Willerslev, Eske -- Cappellini, Enrico -- Boomsma, Wouter -- Nielsen, Rasmus -- Hebsgaard, Martin B -- Brand, Tina B -- Hofreiter, Michael -- Bunce, Michael -- Poinar, Hendrik N -- Dahl-Jensen, Dorthe -- Johnsen, Sigfus -- Steffensen, Jorgen Peder -- Bennike, Ole -- Schwenninger, Jean-Luc -- Nathan, Roger -- Armitage, Simon -- de Hoog, Cees-Jan -- Alfimov, Vasily -- Christl, Marcus -- Beer, Juerg -- Muscheler, Raimund -- Barker, Joel -- Sharp, Martin -- Penkman, Kirsty E H -- Haile, James -- Taberlet, Pierre -- Gilbert, M Thomas P -- Casoli, Antonella -- Campani, Elisa -- Collins, Matthew J -- 076905/Wellcome Trust/United Kingdom -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 2007 Jul 6;317(5834):111-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centre for Ancient Genetics, University of Copenhagen, Denmark. ewillerslev@bi.ku.dk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17615355" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acids/*analysis/history/isolation & purification ; Animals ; Bayes Theorem ; Climate ; DNA/*analysis/history/isolation & purification ; *Ecosystem ; Fossils ; Geography ; Greenland ; History, Ancient ; Ice Cover/*chemistry ; *Invertebrates/classification/genetics ; *Plants/classification/genetics ; Polymerase Chain Reaction ; Time ; *Trees
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
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    Whole-genome shotgun sequencing of mitochondria from ancient hair shafts (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-09-29
    Description: Although the application of sequencing-by-synthesis techniques to DNA extracted from bones has revolutionized the study of ancient DNA, it has been plagued by large fractions of contaminating environmental DNA. The genetic analyses of hair shafts could be a solution: We present 10 previously unexamined Siberian mammoth (Mammuthus primigenius) mitochondrial genomes, sequenced with up to 48-fold coverage. The observed levels of damage-derived sequencing errors were lower than those observed in previously published frozen bone samples, even though one of the specimens was 〉50,000 14C years old and another had been stored for 200 years at room temperature. The method therefore sets the stage for molecular-genetic analysis of museum collections.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gilbert, M Thomas P -- Tomsho, Lynn P -- Rendulic, Snjezana -- Packard, Michael -- Drautz, Daniela I -- Sher, Andrei -- Tikhonov, Alexei -- Dalen, Love -- Kuznetsova, Tatyana -- Kosintsev, Pavel -- Campos, Paula F -- Higham, Thomas -- Collins, Matthew J -- Wilson, Andrew S -- Shidlovskiy, Fyodor -- Buigues, Bernard -- Ericson, Per G P -- Germonpre, Mietje -- Gotherstrom, Anders -- Iacumin, Paola -- Nikolaev, Vladimir -- Nowak-Kemp, Malgosia -- Willerslev, Eske -- Knight, James R -- Irzyk, Gerard P -- Perbost, Clotilde S -- Fredrikson, Karin M -- Harkins, Timothy T -- Sheridan, Sharon -- Miller, Webb -- Schuster, Stephan C -- HG002238/HG/NHGRI NIH HHS/ -- New York, N.Y. -- Science. 2007 Sep 28;317(5846):1927-30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centre for Ancient Genetics, University of Copenhagen, Universitetsparken 15, DK-2100 Copenhagen, Denmark.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17901335" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bone and Bones/chemistry ; DNA Damage ; DNA, Mitochondrial/chemistry/genetics/*history ; Elephants/*genetics ; Genes, Mitochondrial ; *Genome ; *Hair/chemistry/ultrastructure ; History, Ancient ; Mitochondria/*genetics ; Molecular Sequence Data ; Preservation, Biological ; *Sequence Analysis, DNA ; Siberia ; Temperature
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
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    A 10,000-year record of Arctic Ocean sea-ice variability--view from the beach (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2011-08-06
    Description: We present a sea-ice record from northern Greenland covering the past 10,000 years. Multiyear sea ice reached a minimum between ~8500 and 6000 years ago, when the limit of year-round sea ice at the coast of Greenland was located ~1000 kilometers to the north of its present position. The subsequent increase in multiyear sea ice culminated during the past 2500 years and is linked to an increase in ice export from the western Arctic and higher variability of ice-drift routes. When the ice was at its minimum in northern Greenland, it greatly increased at Ellesmere Island to the west. The lack of uniformity in past sea-ice changes, which is probably related to large-scale atmospheric anomalies such as the Arctic Oscillation, is not well reproduced in models. This needs to be further explored, as it is likely to have an impact on predictions of future sea-ice distribution.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Funder, Svend -- Goosse, Hugues -- Jepsen, Hans -- Kaas, Eigil -- Kjaer, Kurt H -- Korsgaard, Niels J -- Larsen, Nicolaj K -- Linderson, Hans -- Lysa, Astrid -- Moller, Per -- Olsen, Jesper -- Willerslev, Eske -- New York, N.Y. -- Science. 2011 Aug 5;333(6043):747-50. doi: 10.1126/science.1202760.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centre for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, Oster Voldgade 5-7, DK 1350 Copenhagen K, Denmark. svf@snm.ku.dk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21817051" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
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    Pre-Clovis mastodon hunting 13,800 years ago at the Manis site, Washington (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2011-10-25
    Description: The tip of a projectile point made of mastodon bone is embedded in a rib of a single disarticulated mastodon at the Manis site in the state of Washington. Radiocarbon dating and DNA analysis show that the rib is associated with the other remains and dates to 13,800 years ago. Thus, osseous projectile points, common to the Beringian Upper Paleolithic and Clovis, were made and used during pre-Clovis times in North America. The Manis site, combined with evidence of mammoth hunting at sites in Wisconsin, provides evidence that people were hunting proboscideans at least two millennia before Clovis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Waters, Michael R -- Stafford, Thomas W Jr -- McDonald, H Gregory -- Gustafson, Carl -- Rasmussen, Morten -- Cappellini, Enrico -- Olsen, Jesper V -- Szklarczyk, Damian -- Jensen, Lars Juhl -- Gilbert, M Thomas P -- Willerslev, Eske -- New York, N.Y. -- Science. 2011 Oct 21;334(6054):351-3. doi: 10.1126/science.1207663.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for the Study of the First Americans, Department of Anthropology, Texas A&M University, 4352 TAMU, College Station, TX 77843-4352, USA. mwaters@tamu.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22021854" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Archaeology ; Bone and Bones ; Geologic Sediments ; History, Ancient ; Humans ; Male ; *Mastodons ; Radiometric Dating ; Time ; Washington ; Weapons/*history
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
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    An Aboriginal Australian genome reveals separate human dispersals into Asia (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2011-09-24
    Description: We present an Aboriginal Australian genomic sequence obtained from a 100-year-old lock of hair donated by an Aboriginal man from southern Western Australia in the early 20th century. We detect no evidence of European admixture and estimate contamination levels to be below 0.5%. We show that Aboriginal Australians are descendants of an early human dispersal into eastern Asia, possibly 62,000 to 75,000 years ago. This dispersal is separate from the one that gave rise to modern Asians 25,000 to 38,000 years ago. We also find evidence of gene flow between populations of the two dispersal waves prior to the divergence of Native Americans from modern Asian ancestors. Our findings support the hypothesis that present-day Aboriginal Australians descend from the earliest humans to occupy Australia, likely representing one of the oldest continuous populations outside Africa.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3991479/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3991479/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rasmussen, Morten -- Guo, Xiaosen -- Wang, Yong -- Lohmueller, Kirk E -- Rasmussen, Simon -- Albrechtsen, Anders -- Skotte, Line -- Lindgreen, Stinus -- Metspalu, Mait -- Jombart, Thibaut -- Kivisild, Toomas -- Zhai, Weiwei -- Eriksson, Anders -- Manica, Andrea -- Orlando, Ludovic -- De La Vega, Francisco M -- Tridico, Silvana -- Metspalu, Ene -- Nielsen, Kasper -- Avila-Arcos, Maria C -- Moreno-Mayar, J Victor -- Muller, Craig -- Dortch, Joe -- Gilbert, M Thomas P -- Lund, Ole -- Wesolowska, Agata -- Karmin, Monika -- Weinert, Lucy A -- Wang, Bo -- Li, Jun -- Tai, Shuaishuai -- Xiao, Fei -- Hanihara, Tsunehiko -- van Driem, George -- Jha, Aashish R -- Ricaut, Francois-Xavier -- de Knijff, Peter -- Migliano, Andrea B -- Gallego Romero, Irene -- Kristiansen, Karsten -- Lambert, David M -- Brunak, Soren -- Forster, Peter -- Brinkmann, Bernd -- Nehlich, Olaf -- Bunce, Michael -- Richards, Michael -- Gupta, Ramneek -- Bustamante, Carlos D -- Krogh, Anders -- Foley, Robert A -- Lahr, Marta M -- Balloux, Francois -- Sicheritz-Ponten, Thomas -- Villems, Richard -- Nielsen, Rasmus -- Wang, Jun -- Willerslev, Eske -- BB/H005854/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- BB/H008802/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- R01 HG003229/HG/NHGRI NIH HHS/ -- New York, N.Y. -- Science. 2011 Oct 7;334(6052):94-8. doi: 10.1126/science.1211177. Epub 2011 Sep 22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centre for GeoGenetics, Natural History Museum of Denmark, Oster Voldgade 5-7, 1350 Copenhagen, Denmark.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21940856" target="_blank"〉PubMed〈/a〉
    Keywords: African Continental Ancestry Group ; Animals ; Asia ; Asian Continental Ancestry Group/genetics ; Computer Simulation ; DNA, Mitochondrial/genetics ; Emigration and Immigration ; Ethnic Groups/genetics ; European Continental Ancestry Group/genetics ; Far East ; Gene Flow ; Gene Frequency ; Genetics, Population/methods ; *Genome, Human ; Genome, Mitochondrial ; Haplotypes ; Hominidae/genetics ; Humans ; Linkage Disequilibrium ; Male ; Oceanic Ancestry Group/*genetics ; Phylogeny ; Polymorphism, Single Nucleotide ; Sequence Analysis, DNA ; Western Australia
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
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    Clovis age Western Stemmed projectile points and human coprolites at the Paisley Caves (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-07-17
    Description: The Paisley Caves in Oregon record the oldest directly dated human remains (DNA) in the Western Hemisphere. More than 100 high-precision radiocarbon dates show that deposits containing artifacts and coprolites ranging in age from 12,450 to 2295 (14)C years ago are well stratified. Western Stemmed projectile points were recovered in deposits dated to 11,070 to 11,340 (14)C years ago, a time contemporaneous with or preceding the Clovis technology. There is no evidence of diagnostic Clovis technology at the site. These two distinct technologies were parallel developments, not the product of a unilinear technological evolution. "Blind testing" analysis of coprolites by an independent laboratory confirms the presence of human DNA in specimens of pre-Clovis age. The colonization of the Americas involved multiple technologically divergent, and possibly genetically divergent, founding groups.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jenkins, Dennis L -- Davis, Loren G -- Stafford, Thomas W Jr -- Campos, Paula F -- Hockett, Bryan -- Jones, George T -- Cummings, Linda Scott -- Yost, Chad -- Connolly, Thomas J -- Yohe, Robert M 2nd -- Gibbons, Summer C -- Raghavan, Maanasa -- Rasmussen, Morten -- Paijmans, Johanna L A -- Hofreiter, Michael -- Kemp, Brian M -- Barta, Jodi Lynn -- Monroe, Cara -- Gilbert, M Thomas P -- Willerslev, Eske -- New York, N.Y. -- Science. 2012 Jul 13;337(6091):223-8. doi: 10.1126/science.1218443.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Museum of Natural and Cultural History, University of Oregon, Eugene, OR 97403, USA. djenkins@uoregon.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22798611" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Archaeology ; *Caves ; DNA/analysis ; Emigration and Immigration/history ; Feces ; *Fossils ; History, Ancient ; Humans ; Molecular Sequence Data ; North America ; Oregon ; Population Dynamics ; Radiometric Dating ; Rodentia ; Technology/history ; Time
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 10
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    Glacial survival of boreal trees in northern Scandinavia (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-03-03
    Description: It is commonly believed that trees were absent in Scandinavia during the last glaciation and first recolonized the Scandinavian Peninsula with the retreat of its ice sheet some 9000 years ago. Here, we show the presence of a rare mitochondrial DNA haplotype of spruce that appears unique to Scandinavia and with its highest frequency to the west-an area believed to sustain ice-free refugia during most of the last ice age. We further show the survival of DNA from this haplotype in lake sediments and pollen of Trondelag in central Norway dating back ~10,300 years and chloroplast DNA of pine and spruce in lake sediments adjacent to the ice-free Andoya refugium in northwestern Norway as early as ~22,000 and 17,700 years ago, respectively. Our findings imply that conifer trees survived in ice-free refugia of Scandinavia during the last glaciation, challenging current views on survival and spread of trees as a response to climate changes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Parducci, Laura -- Jorgensen, Tina -- Tollefsrud, Mari Mette -- Elverland, Ellen -- Alm, Torbjorn -- Fontana, Sonia L -- Bennett, K D -- Haile, James -- Matetovici, Irina -- Suyama, Yoshihisa -- Edwards, Mary E -- Andersen, Kenneth -- Rasmussen, Morten -- Boessenkool, Sanne -- Coissac, Eric -- Brochmann, Christian -- Taberlet, Pierre -- Houmark-Nielsen, Michael -- Larsen, Nicolaj Krog -- Orlando, Ludovic -- Gilbert, M Thomas P -- Kjaer, Kurt H -- Alsos, Inger Greve -- Willerslev, Eske -- New York, N.Y. -- Science. 2012 Mar 2;335(6072):1083-6. doi: 10.1126/science.1216043.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Ecology and Genetics, Evolutionary Biology Centre, Uppsala University, Uppsala, Sweden.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22383845" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; DNA, Chloroplast/genetics ; DNA, Mitochondrial/genetics ; *Ecosystem ; Europe ; *Fossils ; Geologic Sediments ; Haplotypes ; *Ice Cover ; Molecular Sequence Data ; Mutation ; Norway ; *Picea/genetics ; *Pinus/genetics ; Scandinavian and Nordic Countries ; Time
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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