浅海養魚場における栽培アナアオサ，Ｕｌｖａ　ｐｅｒｔｕｓａの生長とＮ，Ｐ吸収速度

DOI 日本農学文献記事索引 Web Site 被引用文献1件 参考文献19件
  • 耒代 勇樹
    鹿児島大学大学院連合農学研究科海洋生産環境学講座
  • 門脇 秀策
    鹿児島大学水産学部資源育成科学講座

書誌事項

タイトル別名
  • The Growth and N, P Uptake Rates of Ulva pertusa Cultured in Coastal Fish Farms
  • センカイ ヨウギョジョウ ニ オケル サイバイ アナアオサ Ulva pertusa ノ セイチョウ ト N P キュウシュウ ソクド

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抄録

Biological water purification by culturing Ulva pertusa in coastal fish farms was estimated as a function of light intensity, dissolved inorganic nutrients and water temperature. Ulva pertusa was cultured from 0.5 m to 8 m depths in coastal fish farms from August to November, 2002. The maximum growth of thallus area, wet weight and thickness were recorded at 0.5 m depth. The maximum growth of thallus area reached to 640 cm2 on August. The maximum growth of thallus thickness reached to 0.11 mm on November. Average contents of total nitrogen (N) and total phosphorus (P) in Ulva pertusa reached to 35 mg N/g dry and 2.1 mg P/g dry in October, respectively. The maximum N, P uptake rates of Ulva pertusa were 3.6 mg N/m2/day and 0.19 mg P/m2/day at 0.5m depth, respectively. Michaelis-Menten's constants of N, P uptake rates were 26μg N/l and 8.6μg P/l, respectively. Downward irradiance of 730μmol/m2/s resulted in the maximum N, P uptake rates. N, P uptake rates of Ulva pertusa at 25°C were 2.5 mg N/m2/day and 0.13 mg P/m2/day, respectively. Water temperature coefficients of N, P uptake rates were 1.076 and 1.084, respectively. The N and P uptake rates of cultured Ulva pertusa were formulated from dissolved inorganic nutrients, light intensity and water temperature characteristics found in coastal fish farms, and the calculated values corresponded well with the observed values.

収録刊行物

  • 水産増殖

    水産増殖 52 (1), 65-72, 2004

    日本水産増殖学会

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