PRIMARY PRODUCTION AND ITS GRAZING LOSS ESTIMATED BY PHYTOPLANKTON PIGMENTS IN THE WESTERN PART OF THE SUBARCTIC PACIFIC

亚北极太平洋西部地区浮游植物色素估算的初级生产及其放牧损失

• 批准号: 12680528
• 负责人: HATTORI Hiroshi
• 金额: $ 2.37万
• 依托单位: Hokkaido Tokai University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12680528/
• 关键词: Phytoplankton pigments; HPLC; Oyashio; Western Subarctic Pacific; Coccolithophores; Phytoplankton; サロマ湖; アイスアルジー; 希釈法; 微小動物食物網; 基礎生産

PHYTOPLANKTON HAS A CERTAIN ACCESSORY PIGMENT IN EACH SPECIES WHEREAS THERE ARE MANY PIGMENTS IN ITS CELL. THESE PIGMENTS ARE OBSERVED QUANTITATIVELY BY THE HIGH PERFORMANCE LIQUID CHROMATOGRAPHY (HPLC). IN THE PRESENT STUDY, WE OBSERVED SEASONAL CHANGES IN COCCOLITHOPHORES IN THE OYASHIO AREA TO UNDERSTAND SEASONAL CHANGE IN PHYTOPLANKTON BEING ESTIMATED BY USING HPLC IN THE SUBARCTIC PACIFIC.28 COCCOLITHOPHORE SPECIES WERE OBSERVED IN THE OYASHIO WATER AMONG COCCOLITHOPHORES, EMILIANIA HUXLEYI V. HUXLEYI (51.6%), CALICOPAPPUS RIGIDUS (6.2%), AND ZYGOSPHAER AMOENE (5.2%) WERE ABUNDANT THROUGHOUT THE YEAR. CONCENTRATION OF COCCOLITHOPHORES AND THE BIOMASS CENTER OF THE DEPTH WAS INCREASED WITH SEASON STARTED FROM SPRING. MAXIMUM ABUNDANCE WAS OBSERVED IN AUGUST AT 30 M DEPTH WHERE WATER TEMPERATURE WAS 10℃ WITH 32.8 PSU. THE ABUNDANCE BECAME LOW FROM OCTOBER. THESE RESULTS REVEAL THAT CONCENTRATION OF COCCOLITHOPHORES WAS RELATED WITH THE WATER.HPLC ANALYSIS WAS RECENTLY COMPLETED. WE WILL OBSERVE THE RELATION BETWEEN ABUNDANCE OF COCCOLITHOPHORES AND EACH PIGMENT CONCENTRATION.

浮游植物的每个物种都有一定的辅助色素，而其细胞中有许多色素。通过高效液相色谱 (HPLC) 定量观察这些色素。在本研究中，我们观察了亲潮地区颗石藻的季节变化，以了解使用 HPLC 估算亚北极太平洋浮游植物的季节变化。在亲潮水域中观察到了 28 种颗石藻种类。颗石藻类、EMILIANIA HUXLEYI V. HUXLEYI (51.6%)、硬硬花 (6.2%) 和 ZYGOSPHAER AMOENE (5.2%) 全年都很丰富。颗石藻的浓度和生物量中心的深度随着季节的开始而增加。 8 月份在 30 M 深度观察到最大丰度，水温为 10℃，功率为 32.8 PSU。从十月份开始，丰度开始下降。这些结果表明，颗石载体的浓度与水有关。最近完成了 HPLC 分析。我们将观察颗石藻丰度与每种颜料浓度之间的关系。

项目成果

Sampei, M., H.Sasaki, H.Hattori, S.Kudoh, Y.Kashino, M.Fukuchi: "Seasonal and spatial variability in the flux of biogenic particles in the North Water Polynya"Deep-Sea Research II. 49. 5245-5257 (2002)

Sampei, M., H.Sasaki, H.Hattori, S.Kudoh, Y.Kashino, M.Fukuchi：“北水间湖生物颗粒通量的季节和空间变化”深海研究 II。

Sanpei, M., H. Sasaki, H. Hattori, S. Kudoh, Y. Kashino, & M. Fukuchi: "Seasonal and spatial variability in the flux of biogenic particles in the North Water Polynya"Deep-Sea Research II. 49. 5245-5257 (2002)

Sanpei，M.，H. Sasaki，H. Hattori，S. Kudoh，Y. Kashino，

Saito, H., S.Taguchi: "Influence of UV-B radiation on hatching success of marine copepod Paracalanus parvus s.l."Journal of Experimental Marine Biology and Ecology. 282. 135-147 (2002)

Saito, H., S.Taguchi：“UV-B 辐射对海洋桡足类 Paracalanus parvus s.l. 孵化成功的影响”实验海洋生物学与生态学杂志。

Saito, H., A.Tsuda, H.Hkasai: "Nutrient and plankton dynamics in the Otashio region of the western subarctic Pacific/"Deep-Sea Research II. 49. 5463-5486 (2002)

Saito, H.、A.Tsuda、H.Hkasai：“西亚北极太平洋 Otashio 地区的营养物和浮游生物动态/”深海研究 II。

Sampei, M., H.Sasaki, H.Hattori, S.Kudoh, Y.Kashino, M.fukuchi: "Seasonal and spatial variability in the flux of biogenic particles in the North Water Polynya"Deep-Sea Research. (inpress). (2002)

Sampei, M., H.Sasaki, H.Hattori, S.Kudoh, Y.Kashino, M.fukuchi：“北水间湖生物颗粒通量的季节和空间变化”深海研究。