منابع مشابه
Pollen analyses from a 50 000 - yr rodent midden series in the southern Atacama Desert ( 25 30 0 S )
Precipitation in northern Chile is controlled by two great wind belts—the southern westerlies over the southern Atacama and points south (> 24 S) and the tropical easterlies over the northern and central Atacama Desert (16–24 S). At the intersection of these summer and winter rainfall regimes, respectively, is a Mars-like landscape consisting of expansive surfaces devoid of vegetation (i.e. abs...
متن کاملChanges in the Bathymetry and Volume of Glacial Lake Agassizbetween 9200 and 7700 14C yr B.P
Computer reconstructions of the bathymetry of the lake were used to quantify variations in the size and form of Lake Agassiz during its final two phases (the Nipigon and Ojibway phases), between about 9200 and 7700 14C yr B.P. (ca. 10,300–8400 cal yr B.P.). New bathymetric models for four Nipigon Phase stages (corresponding to the McCauleyville, Hillsboro, Burnside, and The Pas strandlines) ind...
متن کاملResponse of spatial vegetation distribution in China to climate changes since the Last Glacial Maximum (LGM)
Analyzing how climate change affects vegetation distribution is one of the central issues of global change ecology as this has important implications for the carbon budget of terrestrial vegetation. Mapping vegetation distribution under historical climate scenarios is essential for understanding the response of vegetation distribution to future climatic changes. The reconstructions of palaeoveg...
متن کاملPollen specificity elements reside in 30 bp of the proximal promoters of two pollen-expressed genes.
Functional analyses previously identified minimal promoter regions required for maintaining high-level expression of the late anther tomato LAT52 and LAT59 genes in tomato pollen. Here, we now define elements that direct pollen specificity. We used a transient assay system consisting of two cell types that differentially express the LAT genes and both "loss-of-function" and "gain-of-function" a...
متن کاملWood Usage and Fire Veneration in the Pamir, Xinjiang, 2500 yr BP
Located on the Pamir Plateau in Xinjiang Province, China, the Ji'erzankale Necropolis dates back to 2500 yr BP. Many materials that have been unearthed in this cemetery, including shoo konghou (musical instrument), bronze mirrors and glass beads, suggest cultural transference between East and West. Furthermore, small-sized and rounded fire altars made from sweet-scented Sabina were found for th...
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ژورنال
عنوان ژورنال: Journal of Biogeography
سال: 2000
ISSN: 0305-0270,1365-2699
DOI: 10.1046/j.1365-2699.2000.00426.x