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采用MSM寡营养培养基从印度尼西亚Pantai cermin,Kalianda和Banyu wedang地区的热泉水样、泥样以及沉积物中根据菌落的形态学特征共分离获得69株细菌,通过菌株的16S rDNA的限制性片段长度多态性(PCR-RFLP)分析、序列比对和生理生化分析,对其进行鉴定并构建系统发育树.结果表明,分离... 相似文献
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Tropical coral reef coral patterns in Indonesian shallow water areas close to underwater volcanic vents at Minahasa Seashore,and Mahengetang and Gunung Api Islands 
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下载免费PDF全文 Hedi I. Januar Neviaty P. Zamani Dedi Soedarma Ekowati Chasanah Anthony D. Wright 《Marine Ecology》2017,38(2)
Coral community patterns on some Indonesian reefs influenced by CO2 from underwater volcanic vents and nutrients from eutrophication pressures were examined. The overall aim of the study was to provide an insight into the significance of future ocean acidification compared to eutrophication pressures on tropical coral communities. Coral cover and seawater characteristics at acidified sites (with varied levels of eutrophication), i.e., moderate acidification (pH: 7.87 ± 0.04), low acidification (pH: 8.01 ± 0.04) and reference (pH: 8.2 ± 0.02), were observed at reefs associated with Minahasa Seashore, and Mahengetang and Gunung Api Islands. Results showed that coral community patterns varied among locations and acidified sites, e.g., domination of families such as Alcyoniidae, Acroporidae, Poritidae and Heliporidae, and with different levels of abiotic cover. Surprisingly, pH was not detected as the major determining factor. This finding probably relates to tropical seawater temperatures being high enough to still allow for aragonite deposition even at pH values down to 7.8. Nutrients (phosphate and dissolved inorganic nitrogen) were shown to be the main determining factors that influenced community patterns on the observed coral reefs. Overall, the results indicate that tropical coral reef community patterns will continue to vary as pH decreases to the predicted oceanic value of pH 7.8 over the next 100 years, and bio‐geo‐ecological characteristics and anthropogenic pressures will be the major factors determining Indonesian tropical coral community structure, compared to pH. 相似文献
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研究对2011年7月采自印度尼西亚卡利安达岛近岸热泉的样品,进行了细菌和古菌16S rRNA基因和细菌氢酶基因克隆文库的构建、序列测定和多样性分析。结果表明:热泉系统的细菌和古菌由16个门组成,Proteobacteria为热液流体和沉积物的优势类群,丰度分别为59.5%和73.3%,Cyanobacteria为菌苔的优势类群(丰度,56.5%);具有氨氧化作用的Crenarchaeota为古菌的优势类群。热泉系统中,70%以上的种类与海洋细菌的亲缘关系最近,说明该系统具有海洋特性;约20%的种类与陆地热泉中嗜热或中等嗜热细菌的亲缘关系最近,这些种类可能来源于高温地层内部,并参与了铁氧化还原、氢氧化、硫氧化和硝酸还原等过程。热泉系统中,NAD(P)-关联的双向NiFe-氢酶基因和FeFe-氢酶基因的组成分布也受到温度和盐度分布变化的影响。研究为揭示浅海热液系统提供理论参考。 相似文献
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