The balance between biogenic silica production and its dissolution in the surface ocean
生物二氧化硅的产生与其在表层海洋中的溶解之间的平衡
基本信息
- 批准号:17310005
- 负责人:
- 金额:$ 10.46万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (B)
- 财政年份:2005
- 资助国家:日本
- 起止时间:2005 至 2007
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Production and dissolution rates of biogenic silica (diatom frustules) in the surface waters were determined simultaneously using silicon stable isotope tracer to investigate balance between biogenic silica production and its dissolution in the surface waters of the western subarctic North Pacific Ocean. New analytical method for the determination of silicon isotope ratios was developed using a high-resolution Inductively Coupled Plasma-Mass Spectrometry. By correcting background Si peaks, analytical precision and sensitivity similar to those of the thermal ionization mass spectrometry were obtained. This method was used for the determination of the rates of biogenic silica production and dissolution in the Oyashio surface water of the western subarctic North Pacific. Column integrated dissolution rate of biogenic silica exceeded production rate by diatoms within the euphotic layer, suggesting active silicic acid dissolved from particulate biogenic silica and its utilization by diatoms in the surface mixed layer. Batch dissolution experiments of diatom frustules obtained from the western subarctic North Pacific were also conducted in the laboratory to investigate differences in dissolution kinetics between the dominant diatom groups. Observed dissolution rates indicated that degree of solubility of diatom frustules is different between the diatom species as well as the site of the frustules. Morphological changes of diatom frustules during the dissolution process seem to be an important factor affecting surface/volume ratio of the frustules and consequently its dissolution rate. From these results, most of the biogenic silica produced by diatoms was estimated to be recycling in the surface ocean. However, existence of diatom frustules in the deep layers implies that rapid sinking of diatom containing feral pellets should be considered as another important process in the marine silicon cycles.
利用硅稳定同位素示踪剂同时测定了北太平洋亚北极西部表层生物源二氧化硅(硅藻)的生成和溶解速率,探讨了生物源二氧化硅的生成和溶解之间的平衡。建立了高分辨率电感耦合等离子体质谱法测定硅同位素比值的新方法。通过对背景Si峰进行校正,获得了与热电离质谱法相似的分析精度和灵敏度。本方法用于测定北太平洋亚北极西部的大潮地表水中生物源二氧化硅的生成和溶解速率。生物源二氧化硅的柱积分溶解速率超过了绿光层内硅藻的产酸速率,说明颗粒状生物源二氧化硅溶解的活性硅酸被表面混合层的硅藻利用。在实验室中还进行了从亚北极北太平洋西部获得的硅藻体的批量溶解实验,以研究优势硅藻群之间溶解动力学的差异。对溶出速率的观察表明,不同硅藻种类和不同硅藻体位置的硅藻体的溶解度不同。硅藻囊体在溶解过程中的形态变化似乎是影响囊体表面积/体积比进而影响其溶解速率的重要因素。根据这些结果,硅藻产生的大部分生物源二氧化硅被估计在海洋表面回收。然而,深层硅藻体的存在意味着硅藻的快速下沉应该被认为是海洋硅循环的另一个重要过程。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Distribution of the cyanobacterium Richelia intracellularis as epipyte of the diatom chaetoceros compressus in the western Pacific Ocean
作为硅藻压缩角毛藻附生体的胞内蓝藻在西太平洋的分布
- DOI:
- 发表时间:2005
- 期刊:
- 影响因子:0
- 作者:Gomez;F.
- 通讯作者:F.
Distribution of the cyanobacterium Richelia intracellularis as an epiphyte of the diatom Chaetoceros compressus in the western Pacific Ocean
- DOI:10.1093/plankt/fbi007
- 发表时间:2005-04-01
- 期刊:
- 影响因子:2.1
- 作者:Gómez, F;Furuya, K;Takeda, S
- 通讯作者:Takeda, S
A review of solubility and dissolution rates of biogenic silica : Present and future direction
生物二氧化硅的溶解度和溶解速率综述:现在和未来的方向
- DOI:
- 发表时间:2007
- 期刊:
- 影响因子:0
- 作者:Kamatani;A.;S. Takeda
- 通讯作者:S. Takeda
Morphological changes of diatom frustule collected from the subarctic western North Pacific during its dissolution in seawater
北太平洋亚北极地区采集的硅藻壳在海水溶解过程中的形态变化
- DOI:
- 发表时间:2008
- 期刊:
- 影响因子:0
- 作者:Igata;S.
- 通讯作者:S.
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
数据更新时间:{{ journalArticles.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ monograph.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ sciAawards.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ conferencePapers.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ patent.updateTime }}
TAKEDA Shigenobu其他文献
TAKEDA Shigenobu的其他文献
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
{{ truncateString('TAKEDA Shigenobu', 18)}}的其他基金
The effect of ocean acidification on Fe availability to phytoplankton in coastal and oceanic waters of the eastern North Pacific
海洋酸化对北太平洋东部沿海和海洋水域浮游植物铁利用率的影响
- 批准号:
20KK0240 - 财政年份:2020
- 资助金额:
$ 10.46万 - 项目类别:
Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))
Complex regulation of nitrogen cycle by trace metals in the subsurface ocean
次表层海洋中痕量金属对氮循环的复杂调控
- 批准号:
18H03361 - 财政年份:2018
- 资助金额:
$ 10.46万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Effects of ocean acidification on Fe availability and plankton productivity in the subarctic North Pacific
海洋酸化对北太平洋亚北极地区铁的有效性和浮游生物生产力的影响
- 批准号:
17H04479 - 财政年份:2017
- 资助金额:
$ 10.46万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Regulation mechanism of nitrogen cycle by trace metals in the subsurface ocean
次表层海洋微量金属氮循环的调控机制
- 批准号:
16K12586 - 财政年份:2016
- 资助金额:
$ 10.46万 - 项目类别:
Grant-in-Aid for Challenging Exploratory Research
Complex functions of trace metals on regulation of nitrogen cycle in the subsurface ocean
微量金属对地下海洋氮循环调节的复杂功能
- 批准号:
26550010 - 财政年份:2014
- 资助金额:
$ 10.46万 - 项目类别:
Grant-in-Aid for Challenging Exploratory Research
Role of iron as a regulator of nitrogen cycle in the subsurface ocean
铁作为地下海洋氮循环调节剂的作用
- 批准号:
23651017 - 财政年份:2011
- 资助金额:
$ 10.46万 - 项目类别:
Grant-in-Aid for Challenging Exploratory Research
Coupling of silicon and carbon biogeochemical cycles in the surface ocean
表层海洋中硅和碳生物地球化学循环的耦合
- 批准号:
20310006 - 财政年份:2008
- 资助金额:
$ 10.46万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Machanism of iron regulation on amnesic neurontoxin production by coastal diatoms
铁对沿海硅藻遗忘性神经毒素产生的调节机制
- 批准号:
14560143 - 财政年份:2002
- 资助金额:
$ 10.46万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
相似海外基金
Environmental monitoring and marine ecosystem modelling of a coastal socio-ecological system on the Sanriku Coast
三陆海岸沿海社会生态系统的环境监测和海洋生态系统建模
- 批准号:
23H02230 - 财政年份:2023
- 资助金额:
$ 10.46万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Collaborative Research: Assessing the role of polyphosphate production and cycling in marine ecosystem functioning.
合作研究:评估聚磷酸盐生产和循环在海洋生态系统功能中的作用。
- 批准号:
2245248 - 财政年份:2023
- 资助金额:
$ 10.46万 - 项目类别:
Standard Grant
Sentinel Sharks: tracking anthropogenic contamination in the marine ecosystem
哨兵鲨鱼:追踪海洋生态系统中的人为污染
- 批准号:
2887747 - 财政年份:2023
- 资助金额:
$ 10.46万 - 项目类别:
Studentship
Collaborative Research: Assessing the role of polyphosphate production and cycling in marine ecosystem functioning.
合作研究:评估聚磷酸盐生产和循环在海洋生态系统功能中的作用。
- 批准号:
2245249 - 财政年份:2023
- 资助金额:
$ 10.46万 - 项目类别:
Standard Grant
NSFGEO-NERC: Linking species traits to marine ecosystem functioning
NSFGEO-NERC:将物种特征与海洋生态系统功能联系起来
- 批准号:
NE/X016641/1 - 财政年份:2023
- 资助金额:
$ 10.46万 - 项目类别:
Research Grant
Marine ecosystem responses to past climate change and its oceanographic impacts
海洋生态系统对过去气候变化的响应及其海洋学影响
- 批准号:
2875417 - 财政年份:2023
- 资助金额:
$ 10.46万 - 项目类别:
Studentship
Study on the impact of climate change on the marine ecosystem lower trophic levels by using the historically collected samples
利用历史采集样本研究气候变化对海洋生态系统低营养级的影响
- 批准号:
22H00374 - 财政年份:2022
- 资助金额:
$ 10.46万 - 项目类别:
Grant-in-Aid for Scientific Research (A)
NSFGEO-NERC: Linking species traits to marine ecosystem functioning
NSFGEO-NERC:将物种特征与海洋生态系统功能联系起来
- 批准号:
2221914 - 财政年份:2022
- 资助金额:
$ 10.46万 - 项目类别:
Standard Grant
Collaborative Research: Zooplankton restarts in a high-latitude marine ecosystem: species-specific recruitment and development in early spring
合作研究:浮游动物在高纬度海洋生态系统中重新启动:早春物种特异性的补充和发育
- 批准号:
2222592 - 财政年份:2022
- 资助金额:
$ 10.46万 - 项目类别:
Standard Grant
"Invisible interaction" between heterotrophic bacteria and other organisms in marine ecosystem
异养细菌与海洋生态系统其他生物的“看不见的相互作用”
- 批准号:
22H02422 - 财政年份:2022
- 资助金额:
$ 10.46万 - 项目类别:
Grant-in-Aid for Scientific Research (B)