Development of Nutrient Response Model for Dominant phytoplankton in Ariake Bay Considering Dissolved Silicate

考虑溶解硅酸盐的有明湾优势浮游植物养分响应模型的建立

• 批准号: 22560553
• 负责人: KUMAGAI Hiroshi
• 金额: $ 3万
• 依托单位: Fukuoka Institute of Health and Environmental Sciences
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22560553/
• 关键词: 溶存態ケイ素; 有明海; 植物プランクトン; 珪藻; 無機態リン; 無機態窒素; 必須栄養塩; 培養実験

A survey was conducted on dissolved silicon (Dsi) and other nutrient salt concentrations and plankton in the northeastern area of the Ariake Sea to examine the effects of Dsi on the coastal ecosystem. The Dsi concentration in the area decreased twice a year. A significant decrease in Dsi was particularly noted in February and March, and dissolved inorganic phosphorus (DIP) also reduced. The decreases are presumably due to the proliferation of large diatoms, including Eucampia spp. Significant decreases in nutrient salt ratios were also noted: the Dsi/DIN ratio was 1 or lower and the Dsi/DIP ratio was 10 or lower. The spatial distribution of the nutrient salt concentration didn’t make the differences of the species of phytoplankton during this period. However, Dsi was identified as a limited factor for diatom growth within about 2 months.

对有明海东北部地区的溶解硅（Dsi）和其他营养盐浓度以及浮游生物进行了调查，以研究 Dsi 对沿海生态系统的影响。该地区的 Dsi 浓度每年下降两次。 2 月和 3 月 Dsi 显着下降，溶解性无机磷 (DIP) 也减少。这种减少可能是由于大型硅藻（包括Eucampia spp）的增殖所致。还注意到营养盐比率显着降低：Dsi/DIN 比率为 1 或更低，Dsi/DIP 比率为 10 或更低。营养盐浓度的空间分布并没有造成这一时期浮游植物种类的差异。然而，Dsi 被确定为硅藻在大约 2 个月内生长的限制因素。

项目成果

Change of Dissolved Silica Concentration and Diatom Population in Ariake Sea in Japan

日本有明海溶解二氧化硅浓度和硅藻种群变化

• 发表时间: 2012
• 作者: Yoshito TANAKA;Hiroshi KUMAGAI;Yuko ISHIBASHI;and Okihiro OISHI
• 通讯作者: and Okihiro OISHI

Relationship between Dissolved Silica Concentration and Diatom Dominance in Ariake Sea in Japan

日本有明海溶解二氧化硅浓度与硅藻优势的关系

• 发表时间: 2011
• 作者: Yoshito TANAKA;Hiroshi KUMAGAI;Yuko ISHIBASHI;Hiroshi MATSUO
• 通讯作者: Hiroshi MATSUO

有明海北東部におけるDSiを含む栄養塩負荷と植物プランクトンの関係

有明海东北部的营养负荷（包括 DSi）和浮游植物之间的关系

• 发表时间: 2010
• 作者: 熊谷博史;田中義人;石橋融子;松尾宏
• 通讯作者: 松尾宏