Solar Lake (Sinai). 5. The sulfur cycle of the bcnthic cyanobacterial mats1
Solar Lake (Sinai). 5. The sulfur cycle of the bcnthic cyanobacterial mats1
复制标题
太阳湖（西奈半岛）。
DOI：
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发表时间：
1977
期刊：
影响因子：
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通讯作者：
Y. Cohen
中科院分区：
文献类型：
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作者：
B. Jørgensen;Y. Cohen
Solar湖（Sinai）的沿岸的沉积物由厚达1米的蓝藻垫组成。垂直分布在这些垫的硫化合物，有机碳，碳酸盐，硫酸盐还原和其他厌氧，异养细菌。用放射性示踪技术测量的硫酸盐还原的原位速率从表面的5，400 Nmol SO/sub 4//sup 2 -/cm/sup 3//d降低到垫底部的小于1，降低了10，000倍。无机硫化合物和有机物的周转率进行了估计。从厌氧呼吸速率可以推断出一个高的流入到蓝藻藻席的溶解有机化合物产生的底栖藻类和细菌。提出了沉积硫和碳循环的定量流程图。
The littoral sediments of Solar Lake (Sinai) consist of cyanobacterial mats up to 1 m thick. The vertical distributions in these mats of sulfur compounds, organic carbon, carbonate, and of sulfate-reducing and other anaerobic, heterotrophic bacteria are presented. The in situ rate of sulfate reduction measured with a radiotracer technique, decreased 10,000-fold from 5,400 Nmol SO/sub 4//sup 2 -//cm/sup 3//d at the surface to less than 1 at the bottom of the mats. Turnover rates of inorganic sulfur compounds and of organic matter were estimated. A high influx down into the cyanobactyerial mats of dissolved organic compounds produced by the epibenthic algae and bacteria could be deduced from the anaerobic respiration rates. A quantitative flow diagram of the sedimentary sulfur and carbon cycle is presented.