Role of the bivalveCorbicula japonica in the nitrogen cycle in a mesohaline lagoon
Role of the bivalveCorbicula japonica in the nitrogen cycle in a mesohaline lagoon
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双壳类日本蚬在中盐泻湖氮循环中的作用
DOI：
10.1007/bf02112129
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发表时间：
1988
期刊：
影响因子：
2.4
通讯作者：
H. Nishimura
中科院分区：
文献类型：
--
作者：
M. Nakamura;M. Yamamuro;M. Ishikawa;H. Nishimura
根据1982年和1983年夏季进行的实地调查和实验室实验，定量地研究了日本双壳藻对日本中盐咸淡咸水湖真次湖氮循环的影响。肉的生物量。日本占夏季大型底栖动物总生物量的97%。总生物量。据估计，该湖上的悬浮固体浓度为30986吨新鲜重量。日本的过滤水，是地表水的1.5到4倍。在实验室实验中，滤过率为5.0升g干肉wt-1h-1，氨排泄率、粪排泄率和假粪排泄率为c。在27℃夏季湖水平均温度下，japonica.200×10-6g N g干肉wt-1h-1和33.4 mg干肉wt-1h-1。从我们的研究中，我们估计c。湖水中浮游植物产生的颗粒有机氮与河流提供的颗粒有机氮的过滤量几乎相同，过滤后的氮中30%以粪便或假粪便的形式排出，18%以氨的形式排出。
The effect of the bivalveCorbicula japonicaon the nitrogen cycle in Lake Shinji, a mesohaline brackish lagoon in Japan, was examined quantitatively based on field surveys and laboratory experiments carried out in the summer of 1982 and 1983. The biomass of the flesh ofC. japonicacomprised 97% of the total biomass of the macrozoobenthos in summer. Total biomass ofC. japonicain the lake was estimated 30 986 t fresh wt. The concentration of suspended solids immediately above the lake bottom, whereC. japonicafilters the water, was 1.5 to 4 times higher than that in the surface water. In laboratory experiments, the filtration rate was 5.0 litres g dry flesh wt-1h-1, the excretion rates of ammonia and of feces and pseudofeces ofC. japonicawere 200×10-6g N g dry flesh wt-1h-1and 33.4 mg dry wt g dry flesh wt-1h-1, respectively at 27°C, the average summer water temperature in the lake. From our study, we estimated thatC. japonicafilters almost the same amounts of particulate organic nitrogen produced in the lake by phytoplankton and that supplied from rivers, and that it excretes 30% of filtered nitrogen as feces or pseudofeces and 18% as ammonia.