2013 Fiscal Year Final Research Report

The description of microbial diversity on the earth using GenBank

Research Project

Project/Area Number	24657012
Research Category	Grant-in-Aid for Challenging Exploratory Research
Allocation Type	Single-year Grants
Research Field	Ecology/Environment
Research Institution	Chiba University
Principal Investigator	MURAKAMI Masashi 千葉大学, 理学(系)研究科(研究院), 准教授 (50312400)
Co-Investigator(Kenkyū-buntansha)	FUKUI Manabu 北海道大学, 低温科学研究所, 教授 (60305414) HIRAO Toshihide 東京大学, 大学院農学生命科学研究科, 講師 (90598210)
Project Period (FY)	2012-04-01 – 2014-03-31
Keywords	系統地理 / 雪氷藻類 / 湖沼微生物 / 分散制限 / 環境フィルター / Baas Becking 仮説
Research Abstract	There is a common hypothesis "Everything is everywhere, but the environment selects" for the distribution and functioning of microbes. To confirm this hypothesis, the analyses based on data base search and also field samplings were carried out. The targeted assemblages were bacteria in freshwater ecosystem, and green algae on cryosphere. The analyses revealed the simultaneous existence of cosmopolitan- and endemic- clades within closely related microbial assemblages. These results suggested the synergetic effects of dispersal and local environmental niche for the diversity and structure of microbial assemblages. The relative importance of these factors should be further examined in future studies.

(3 results)