海洋微生物多样性及其研究方法



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1、海洋细菌多样性及其研究进展浩瀚的海洋是地球上生命的摇篮,它覆盖地球表面积的70.8%。从海面到海底深层蕴藏着数量惊人的生物、能源、矿产以及空间资源。目前的研究表明,海洋微生物不仅在海洋生态环境和物质循环中具有极其重要的作用,也是各种新型生物活性物质的潜在来源。由于世界面临严重的资源、环境、人口问题,海洋生物资源包括海洋微生物资源的开发与多样性研究已成为各沿海国家关注的热点。1914年,Issatchenko出版第一本海洋微生物研究专著北冰洋细菌的研究,确定了海洋微生物学的研究方向,并使海洋微生物学发展成为独立的学科。 Certes, A. 1884. On the culture, free
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8、mal Vents (Crc Series on Microbiology of Extreme and Unusual Environments). Crc Pr I Llc 。v 薛廷耀编. 海洋细菌学. 科学出版社. 1962 北京v 克里斯 A E.著. 孙国玉,李世珍译. 海洋微生物学(深海). 科学出版社. 1964 北京 v 林永成, 周世宁主编. 海洋微生物及其代谢产物. 化学工业出版社. 2003 北京海洋细菌的多样性摘自Martinko J M., et al. 1997, Brock Biology of Microorganisms(中译本)生物系统发育摘自Martin
9、ko J M., et al. 1997, Brock Biology of Microorganisms(中译本)细菌系统发育微生物种类多样性What is marine bacteria?关于物种的概念物种是一个可以相互交配繁殖的自然群体,并与其他群体在生殖上是隔离的(Mayr, 1969);物种是一个具有自身进化趋向和历史结局的祖裔群体的单一谱系,并维持其特性与其他类似谱系不同(Wiley, 1978);微生物的种是一群具有高度表型相似的菌株的集合体,该菌株集合与其他类群的菌株存在明显差异(Stanier, 1986); species, units of evolution and e
10、cology, should be considered as ecologically unique (e.g. different biotypes, virulence(至病) properties, habitats, host ranges) -from: Ward D.M., A natural species concept for prokaryotes. Curr Opin Microbiol 1998, 1:271-277Major horizontal zonation in an ocean profile. (Soruce: Odum1971.) Intertidal
11、:潮间带neritic浅海区 euphotic zone 透光层 Aphotic zone无光层 Continental shelf大陆架 Continental slope大陆斜坡 Continental rise大陆隆 hadal zone深海带(6000米以下)abyssal plain深海平原trench沟 Principal environmental characteristics of an estuary.HWOST= high water line of spring tide; LWOST= low water line of spring tide.Thermal Ven