Natural water-purification system observed in a shallow coastal lagoon: Matsukawa-ura, Japan.
Natural water-purification system observed in a shallow coastal lagoon: Matsukawa-ura, Japan.
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在日本松川浦的沿海浅泻湖中观察到的天然水净化系统。
DOI：
10.1016/s0025-326x(03)00055-9
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发表时间：
2003
影响因子：
5.8
通讯作者：
Tomiji Hagiwara
中科院分区：
文献类型：
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作者：
K. Kohata;T. Hiwatari;Tomiji Hagiwara
夏季在松川村浅水区进行了实地调查和现场实验，以评价浅水区保护沿海生态系统的生物效率。在松川村（5.8 km2），悬浮食性双壳类菲律宾Ruditapes philipparum和长牡蛎（Crassostrea gigas）是优势动物，它们的总生物量（湿重）估计分别为3.4×106and 2.3×106kg。夏季主要的大型植物种类为长叶草（Ulva sp.）和长叶草（Zostera marina），其立得作物估计分别为0.29×106and 0.20×106kg。采用原位实验法测定了两种植物对可溶性无机氮（DIN）的吸收速率。基于观测数据计算的生态模型表明，与潮汐交换相比，双壳类过滤去除了大量的颗粒物有机物，而大型植物物种去除了相当数量的DIN。
Field surveys and in situ experiments were conducted in the shallow Matsukawa-ura in summer to evaluate the biological efficiencies of shallow-water areas for preserving coastal ecosystems. In Matsukawa-ura (5.8 km2), the suspension-feeding bivalves Ruditapes philippinarum and Crassostrea gigas were the dominant animals––their total biomasses (wet weight) were estimated to be 3.4×106and 2.3×106kg, respectively. Ulva sp. and Zostera marina were the dominant macrophyte species during the summer, with standing crops estimated to be 0.29×106and 0.20×106kg, respectively. The dissolved inorganic nitrogen (DIN) uptake rates for Ulva sp. and Z. marina were determined by in situ experiments. An ecological model calculated on the basis of the observed dataset showed that, in comparison with tidal exchange, a significant amount of particulate organic matter was removed by bivalve filtration and a considerable quantity of DIN was removed by macrophyte species.