نتایج جستجو برای: siberia

تعداد نتایج: 4560  

2016
Claude R Joiris Karin Boos Diederik D'Hert Dominik A Nachtsheim

The at-sea distribution of top predators, seabirds and marine mammals, was determined in the high Arctic pack ice on board the icebreaker RV Polarstern in July to September 2014. In total, 1,620 transect counts were realised, lasting 30 min each. The five most numerous seabird species represented 74% of the total of 15,150 individuals registered: kittiwake Rissa tridactyla, fulmar Fulmarus glac...

Journal: :American journal of human genetics 2011
David Reich Nick Patterson Martin Kircher Frederick Delfin Madhusudan R Nandineni Irina Pugach Albert Min-Shan Ko Ying-Chin Ko Timothy A Jinam Maude E Phipps Naruya Saitou Andreas Wollstein Manfred Kayser Svante Pääbo Mark Stoneking

It has recently been shown that ancestors of New Guineans and Bougainville Islanders have inherited a proportion of their ancestry from Denisovans, an archaic hominin group from Siberia. However, only a sparse sampling of populations from Southeast Asia and Oceania were analyzed. Here, we quantify Denisova admixture in 33 additional populations from Asia and Oceania. Aboriginal Australians, Nea...

2014
Site Luo Yuchun Wu Qing Chang Yang Liu Xiaojun Yang Zhengwang Zhang Min Zhang Qiang Zhang Fasheng Zou

Enormous mountainous forests in Sino-Himalayans and Siberia harbor important avian biodiversity in the Northern Hemisphere. Numerous studies in last two decades have been contributed to systematics and taxonomy of passerines birds in these regions and have revealed various and complex phylogeographic patterns. A passerine species Red-flanked Bluetail Tarsiger cyanurus provided a good system to ...

Journal: :Human biology 2010
Casey C Bennett Frederika A Kaestle

Mitochondrial DNA from 14 archaeological samples at the Ural State University in Yekaterinburg, Russia, was extracted to test the feasibility of ancient DNA work on their collection. These samples come from a number of sites that fall into two groupings. Seven samples are from three sites, dating to the 8th-12th century AD, that belong to a northern group of what are thought to be Ugrians, who ...

2011
Igor Krupnik

In many areas across Siberia, the reindeer herding economy of the native people went into a deep recession during the post-Soviet transition of the 1990s. However, as a larger cross-section of data indicates, the reindeer stock decline is not a universal phenomenon. Nor is the present-day crisis in native Siberian herding economies an unprecedented event, as pastoralists did suffer tremendously...

2002
Daqing Yang Douglas L. Kane Larry D. Hinzman Xuebin Zhang Tingjun Zhang Hengchun Ye

[1] The long-term (1935–1999) monthly records of temperature, precipitation, stream flow, river ice thickness, and active layer depth have been analyzed in this study to examine Lena River hydrologic regime and recent change. Remarkable hydrologic changes have been identified in this study. During the cold season (October–April), significant increases (25–90%) in stream flow and decrease in riv...

Journal: :Current Biology 2015
Pontus Skoglund Erik Ersmark Eleftheria Palkopoulou Love Dalén

The origin of domestic dogs is poorly understood [1-15], with suggested evidence of dog-like features in fossils that predate the Last Glacial Maximum [6, 9, 10, 14, 16] conflicting with genetic estimates of a more recent divergence between dogs and worldwide wolf populations [13, 15, 17-19]. Here, we present a draft genome sequence from a 35,000-year-old wolf from the Taimyr Peninsula in north...

2007
Mark Zlojutro Larissa A. Tarskaia Mark Sorensen J. Josh Snodgrass William R. Leonard Michael H. Crawford

The Yakuts are a Turkic-speaking population of northeastern Siberia and based on archaeological and ethnohistorical evidence are believed to have originated from Turkic populations in south Siberia. To investigate this model, the HVS-I of the mitochondrial DNA control region was sequenced for 144 Yakut individuals representing seven communities from central Yakutia and compared to HVS-I data fo...

Journal: :Remote Sensing 2013
Kazuhito Ichii Masayuki Kondo Yuki Okabe Masahito Ueyama Hideki Kobayashi Seung-Jae Lee Nobuko Saigusa Zaichun Zhu Ranga B. Myneni

Past changes in gross primary productivity (GPP) were assessed using historical satellite observations based on the Normalized Difference Vegetation Index (NDVI) from the Advanced Very High Resolution Radiometer (AVHRR) onboard the National Oceanic and Atmospheric Administration (NOAA) satellite series and four terrestrial biosphere models to identify the trends and driving mechanisms related t...

2003
Kaye L. Brubaker Aditya Saini Glenn E. Moglen Richard H. McCuen

Title of Thesis: MAPPING SNOW COVER IN SIBERIA USING GIS AND REMOTE SENSING Aditya Saini, Master of Science, 2003 Thesis directed by: Associate Professor Kaye L. Brubaker Department of Civil and Environmental Engineering The seasonal snowpack dynamics of the Siberian mountains and plains play a critical role in the freshwater fluxes of northern rivers into the Arctic Ocean. This study is part o...

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