文章基本信息

标题：Diatoms at >5000 Meters in the Quelccaya Summit Dome Glacier, Peru
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作者：Sherilyn C. Fritz ; Bruce E. Brinson ; W. E. Billups 等
期刊名称：Arctic, Antarctic, and Alpine Research
印刷版ISSN：1523-0430
电子版ISSN：1938-4246
出版年度：2015
卷号：47
期号：2
页码：369-374
DOI：10.1657/AAAR0014-075
摘要：Diatoms were found in late Holocene age ice-core samples recovered from the Quelccaya Summit Dome in the tropical Andes of Peru and were imaged by environmental scanning electron microscopy and identified. Freshwater diatoms in the genera Hantzschia , Pinnularia , and Aulacoseira were the most common taxa in the samples and indicate a freshwater source for the material, which also is suggested by the presence of the freshwater alga Volvox . The overall species composition of the diatoms suggests that the majority of taxa originated from a high-elevation lake or wetland in the cordillera surrounding the ice cap. The abundant diatom valves, up to 70 µm in size, likely were transported to the ice via wind.