globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2014.12.018
论文题名:
Patterns of terrestrial and limnologic development in the northern Greater Yellowstone Ecosystem (USA) during the late-glacial/early-Holocene transition
作者: Krause T.R.; Lu Y.; Whitlock C.; Fritz S.C.; Pierce K.L.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2015
卷: 422
起始页码: 46
结束页码: 56
语种: 英语
英文关键词: Diatoms ; Early holocene ; Late-glacial ; Pollen ; Yellowstone
英文摘要: A high-resolution record of pollen, charcoal, diatom, and lithologic data from Dailey Lake in southwestern Montana describes postglacial terrestrial and limnologic development from ice retreat ca. 16,000. cal. yr BP through the early Holocene. Following deglaciation, the landscape surrounding Dailey Lake was sparsely vegetated, and erosional input into the lake was high. As summer insolation increased and ice recessional processes subsided, Picea parkland developed and diatoms established in the lake at 13,300. cal. yr BP. Closed subalpine forests of Picea, Abies, and Pinus established at 12,300. cal. yr BP followed by the development of open Pinus and Pseudotsuga forests at 10,200. cal. yr BP. Increased planktic diatom abundance indicates a step-like warming at 13,100. cal. yr BP, and alternations between planktic and tychoplankic taxa suggest changes in lake thermal structure between 12,400 and 11,400. cal. yr BP. An increasingly open forest, in combination with increased benthic diatoms, indicates warm dry summers during the early Holocene after 11,400. cal. yr BP, in contrast to nearby records in northern Yellowstone that register prolonged summer-wet conditions until ca. 8000. cal. yr BP. Because of its low elevation, Dailey Lake was apparently sensitive to the direct effects of increased summer insolation on temperature and effective moisture, registering dry summers. In contrast, higher elevations in northern Yellowstone responded to the indirect effects of an amplified seasonal insolation cycle on atmospheric circulation, including elevated winter snowpack and/or increased summer convective storms as a result of enhanced monsoonal circulation. © 2015 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/69018
Appears in Collections:过去全球变化的重建

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作者单位: Department of Earth Sciences, Montana State University, Bozeman, MT, United States; Department of Earth and Atmospheric Sciences, University of Nebraska, Lincoln, NE, United States; Montana Institute on Ecosystems, Montana State University, Bozeman, MT, United States; US Geological Survey, Northern Rocky Mountain Science Center, 2327 University Way, Box 2, Bozeman, MT, United States

Recommended Citation:
Krause T.R.,Lu Y.,Whitlock C.,et al. Patterns of terrestrial and limnologic development in the northern Greater Yellowstone Ecosystem (USA) during the late-glacial/early-Holocene transition[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2015-01-01,422
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