1 0 0 0 OA 地球温暖化時代を見据えた内湾環境の再構築に関する研究
三河湾を対象海域として、気象、海象、陸域流出、内湾水質の4つの側面から総合的に温暖化影響について検討した。気象変動については、地表面近くの大気の安定成層化が夜間から早朝で進み化学物質の滞留が起こりやすいことを明らかにした。海象変動については、台風の大型化を見据えて2009年の高潮の特性を詳細に検討し、風場の急変が高潮の増幅要因となることを示した。陸域流出については、モデルを用いて地球温暖化による異常気象により栄養塩の流出が増大するこ可能性を示した。内湾水質については、観測値から0.024~0.06℃/年の水温上昇トレンドを示すとともに、貧酸素水塊の浅海遡上に対する風の影響を明らかにした。
1 0 0 0 OA クラゲ中の無機成分の定量
- 著者
- 福士 惠一 辻本 淳一 横田 久里子
- 出版者
- 公益社団法人 日本分析化学会
- 雑誌
- 分析化学 (ISSN:05251931)
- 巻号頁・発行日
- vol.54, no.2, pp.175-178, 2005 (Released:2005-04-08)
- 参考文献数
- 8
- 被引用文献数
- 6 6
We have determined the concentrations of inorganic components in jellyfish, such as Aurelia aurita (with and without aeration), Stomolophus nomurai, and dried sludge of Aurelia aurita using absorptiometry, flame photometry, ICP emission spectroscopy, atomic absorption spectrometry, or ion chromatography to examine the potential usefulness of jellyfish as a fertilizer for vegetable fields. The concentrations of the total nitrogen (9800 mg/kg), total phosphorus (19000 mg/kg), magnesium (17000 mg/kg), and calcium (27000 mg/kg) in the dried sludge of Aurelia aurita were 23, 1360, 14, and 96-times higher than those in Aurelia aurita (without aeration, 420, 14, 1200, and 280 mg/kg in fresh weight), respectively. Although the dried sludge of Aurelia aurita seemed to have some potential as a fertilizer, it contained high concentrations of iron (190000 mg/kg) and aluminum (2200 mg/kg), which might be undesirable for the growth of plants. On the other hand, the concentration of total nitrogen (750 mg/kg) in Stomolophus nomurai was 1.8-times higher than that in Aurelia aurita (without aeration), although the concentrations of total phosphorus (2.3 mg/kg) and calcium (75 mg/kg) were 1/6 and 1/4 of those in Aurelia aurita (without aeration). Stomolophus nomurai could also be expected to have potential as a fertilizer. Spinach was cultivated using a suspension of Aurelia aurita and Stomolophus nomurai, and the dried sludge of Aurelia aurita as a fertilizer. Stomolophus nomurai was most effective for the growth of spinach. The high concentrations of iron and aluminum in the dried sludge of Aurelia aurita seemed to decelerate the growth of spinach.