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アカシボおよび赤雪の微生物群集の特徴
小島, 久弥
Permalink : http://hdl.handle.net/2115/49014
KEYWORDS : アカシボ;赤雪;バクテリア;Akashibo;red snow;bacteria
Abstract
本稿では, 積雪一般, 赤雪, およびアカシボについて, バクテリアを中心とした微生物群集が持つ特色について概説する. 一般に積雪中のバクテリア群集の分類群構成は, 他の淡水低温環境と類似した特性を有している. これに対し赤雪では, 紫外線に対する防御機構を有するバクテリアの存在比が特に高くなることが示唆されている. 一方アカシボでは, 好気的なメタン酸化細菌と嫌気的な鉄還元菌がともに多く含まれるという独自の微生物群集が成立している.
This article outlines structural characteristics of microbial communities associated with general snow, red snow, and Akashibo, with a focus on bacteria. Generally, taxonomic composition of bacteria in deposited snow has properties similar to those of other cold freshwater environments. It has been suggested that bacterial community in red snow tends to be dominated by organisms that can protect against ultraviolet radiation. Distinctive bacterial community in Akashibo is characterized by concomitant abundance of aerobic methane oxidizers and anaerobic iron reducers.
This article outlines structural characteristics of microbial communities associated with general snow, red snow, and Akashibo, with a focus on bacteria. Generally, taxonomic composition of bacteria in deposited snow has properties similar to those of other cold freshwater environments. It has been suggested that bacterial community in red snow tends to be dominated by organisms that can protect against ultraviolet radiation. Distinctive bacterial community in Akashibo is characterized by concomitant abundance of aerobic methane oxidizers and anaerobic iron reducers.
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