Savvichev A S, Rusanov I I, Iusupov S K, Baĭramov I T, Pimenov N V, Lein A Iu, Ivanov M V
Institute of Microbiology, Russian Academy of Sciences, pr. 60-letiya Oktyabrya 7, k. 2, Moscow, 117312 Russia.
Mikrobiologiia. 2003 Jul-Aug;72(4):535-46.
Microbiological and biogeochemical investigations of the coastal zone and the littoral of the Kandalaksha Bay of the White Sea were carried out. The material for investigations was obtained in the series of expeditions of the Institute of Microbiology, Russian Academy of Sciences, in August 1999, 2000, 2001, and in March 2003. The studies were conducted on the littoral and in the water area of the Kandalaksha Preserve, the Moscow University Belomorsk Biological Station, and the Zoological Institute Biological Station, Russian Academy of Sciences, Sediment sampling on the littoral was carried out in the typical microlandscapes differing in the sediment properties and macrobenthos distribution. The maximal sulfate reduction rate (SRR) was shown for the shallow part of the Chemorechenskaya Bay (up to 2550 micrograms S/(dm3 day)) and in the Bab'ye More Bay (up to 3191 micrograms S/(dm3 day)). During the winter season, at a temperature of -0.5-0.5 degrees C, the SRR in the sediments of the Kartesh Bay was 7.9-13 micrograms S/(dm3 day). In the widest limits, the SRR values varied in the sediment cores sampled on the littoral. The minimal values (11 mu]g S/(dm3 day)) were obtained in the core samples on the silt-sandy littoral. The littoral finely dispersed sediments rich in organic matter were characterized by high SRR values (524-1413 micrograms S/(dm3 day)). The maximal SRR values were shown for the sediments present within the stretch of decomposing macrophytes, in local pits at the lower littoral waterline, and in the mouth of a freshwater stream (51-159 mg S/(dm3 day)). A sharp difference in the level of H2S production in the type microlandscapes was shown. The average hydrogen sulfide production in finely dispersed sediments constituted 125 mg S/(m2 day); in stormy discharge deposits, 1950 mg S/(m2 day); in depressions under stones and in silted pits, 4300 mg S/(m2 day). A calculation made with regard to the area of microlandscapes with increased productivity shows that the daily H2S production per 1 km2 of the littoral (August) is 60.8 to 202 kg S/(km2 day), while the organic carbon consumption for sulfate reduction per 1 km2 of the littoral is 46 to 152 kg C(org)/(km2 day).
对白海坎达拉克沙湾的海岸带和沿岸地区进行了微生物学和生物地球化学调查。调查材料取自俄罗斯科学院微生物研究所1999年8月、2000年、2001年以及2003年3月的一系列考察活动。研究在坎达拉克沙自然保护区的沿岸地区和水域、莫斯科大学白海生物站以及俄罗斯科学院动物研究所生物站开展。在沿岸地区，在沉积物性质和大型底栖生物分布不同的典型微景观中进行沉积物采样。在化学列琴斯卡亚湾的浅水区（高达2550微克硫/（立方分米·天））和巴贝耶莫雷湾（高达3191微克硫/（立方分米·天））显示出最大的硫酸盐还原率（SRR）。在冬季，温度为-0.5至0.5摄氏度时，卡尔捷什湾沉积物中的SRR为7.9至13微克硫/（立方分米·天）。在沿岸采集的沉积物岩心中，SRR值变化范围最广。在粉砂质沿岸的岩心样本中获得了最小值（11微克硫/（立方分米·天））。富含有机物的沿岸细分散沉积物的特点是SRR值较高（524至1413微克硫/（立方分米·天））。在腐烂大型植物分布区域内、沿岸低水位线处的局部坑洼以及淡水溪流河口的沉积物中显示出最大的SRR值（51至159毫克硫/（立方分米·天））。结果表明，不同类型微景观中的硫化氢产生水平存在显著差异。细分散沉积物中的平均硫化氢产生量为125毫克硫/（平方米·天）；在暴雨排放沉积物中为1950毫克硫/（平方米·天）；在石块下的洼地和淤塞坑洼中为4300毫克硫/（平方米·天）。根据生产力增加的微景观面积计算得出，每1平方千米沿岸地区（8月）的每日硫化氢产生量为60.8至202千克硫/（平方千米·天），而每1平方千米沿岸地区用于硫酸盐还原的有机碳消耗量为46至152千克碳（有机）/（平方千米·天）。
