The effect of clams (Tapes philippinarum) on changes in microbial community structure in tidal flat sediment mesocosms, based on quinone profiles
The effect of clams (Tapes philippinarum) on changes in microbial community structure in tidal flat sediment mesocosms, based on quinone profiles
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基于醌谱的蛤（Tapes philippinarum）对潮滩沉积物中生态系统微生物群落结构变化的影响
DOI：
10.1016/j.ecoleng.2004.05.003
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发表时间：
2004
影响因子：
3.8
通讯作者：
Teruaki Suzuki
中科院分区：
文献类型：
--
作者：
U. Hasanudin;M. Fujita;Tadao Kunihiro;K. Fujie;Teruaki Suzuki
为了阐明微生物和微生物对潮滩沉积物污染物降解的影响，采用醌剖面法对有和无蛤的潮滩和潮下沉积物中生态系统的水质变化和微生物群落结构的变化进行了监测。在24h内，有蛤潮沉积物孔隙水中溶解有机碳（DOC）和NH4-N浓度均高于无蛤潮沉积物。这可以用蛤蜊消耗颗粒物有机物质和排泄DOC和NH4-N的能力来解释。另外，在潮下沉积物中，蛤蜊的作用相对较低。蛤的存在和潮汐条件改变了两种沉积物中的优势醌种类。10-异戊二烯泛醌（UQ-10）和6-异戊二烯甲基萘醌（MK-6）分别是潮底泥和潮底泥中主要的醌类。蛤类对潮底泥微生物群落结构变化的影响比潮底泥更快。有蛤和不含蛤的潮汐沉积物微生物群落结构的差异主要是由于含有UQ-8、UQ-9、UQ-10、MK-7 （H8）和MK-9 （H2）的细菌剖面的变化。
To elucidate the relationship between macrobiotics and microorganisms on pollutant degradation in tidal flat sediment, changes in water quality were monitored and shifts in microbial community structure were evaluated using the quinone profile method in mesocosms of tidal and subtidal flat sediment with and without clams. Dissolved organic carbon (DOC) and NH4-N concentrations in pore water of tidal sediment with clams were higher than in sediment without clams over a 24h period. This is explained by the ability of clams to consume particulate organic matter and excrete DOC and NH4-N. Otherwise, the effect of clams was relatively low in subtidal sediments. The presence of clams and tidal conditions changed the predominant quinone species in both sediments. Ubiquinone with 10-isoprene unit (UQ-10) and menaquinone with 6-isoprene unit (MK-6) were predominant quinone species in tidal and subtidal sediment with clams, respectively. The effect of clams on changes in microbial community structure in tidal sediment was more rapid than in subtidal sediment. The differences in microbial community structure in tidal sediment with and without clams were mainly due to the profile changes in UQ-8, UQ-9, UQ-10, MK-7 (H8) and MK-9 (H2)-containing bacteria.