Collaborative Research: DOC removal in the ocean according to polymer gel theory
合作研究:根据聚合物凝胶理论去除海洋中的DOC
基本信息
- 批准号:1634009
- 负责人:
- 金额:$ 87.74万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2016
- 资助国家:美国
- 起止时间:2016-10-01 至 2022-09-30
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Research on carbon cycling in the ocean has received much attention in recent years due to the importance of carbon dynamics in terms of global climate change. A significant portion of the marine carbon reservoir is made up of dissolved organic carbon (DOC), yet much still needs to be learned about the processes controlling its removal (sinks). Especially crucial is identifying how DOC get incorporated into the microbial loop, or the cycling of carbon through biological processes. This project aims to study the creation of microgels from pools of DOC. Microgels are the product of DOC aggregating to form a particle-type of a DOC conglomerate, which makes it more biologically accessible. About 10-30% of the DOC pool is estimated to form these microgels, so a significant segment of the marine carbon cycle will be illuminated more clearly through this research. A vast variety of processes could influence the development of these microgels, so the researchers are including a study of various environmental controls such as temperature and pH. With these parameters and more, the investigators will potentially be able to not only develop and explain the mechanisms of microgel formation, but also the effect which climate change (warming and acidification of the ocean) will have on this process and how that will affect marine biological processes. Additionally, a postdoctoral researcher will be supported through this project, as well as the training of 20 high school teachers, one undergraduate and two high school students. The investigators will develop a high school curriculum that will focus on connecting science to the students' local natural world, which has been shown to improve student learning.The involvement of dissolved organic carbon (DOC) in the microbial loop is overall still a mystery due to the fact that DOC mechanics are poorly understood. The assembly of microgels from dispersed DOC pools may be a critical factor in studying the bioreactivity of DOC in the open ocean. This project aims to study the formation of DOC polymers in the North Pacific and assess their bioreactivity under a variety of environmental conditions (pH, temperature). Deep North Pacific water contains very low DOC (35 µM) yet has the oldest radiocarbon ages (up to 6000 years old) known in the open oceans, which makes it an ideal test site due to the low bioreactivity end member. The goal of this research is to develop mechanistic models of the aggregation of DOC polymers into microgels under a variety of environmental conditions and potentially use that information to describe the potential climate change effects on these processes.
由于碳动力学在全球气候变化中的重要性,海洋碳循环的研究近年来受到了极大的关注。海洋碳库的很大一部分是由溶解有机碳(DOC)组成的,但关于控制其清除的过程(汇)仍有许多需要了解。尤其关键的是确定DOC如何融入微生物循环,或通过生物过程进行碳的循环。该项目旨在研究从DOC池中创建微凝胶。微凝胶是DOC聚集形成颗粒型DOC聚集体的产物,这使得它在生物上更容易获得。据估计,大约10%-30%的DOC池形成了这些微凝胶,因此通过这项研究将更清楚地阐明海洋碳循环的一个重要部分。各种各样的过程可能会影响这些微凝胶的发展,因此研究人员正在包括一项对各种环境控制的研究,如温度和pH。有了这些参数和更多信息,研究人员不仅有可能开发和解释微凝胶形成的机制,而且还可能开发和解释气候变化(海洋变暖和酸化)将对这一过程产生的影响,以及这将如何影响海洋生物过程。此外,将通过该项目支持一名博士后研究人员,以及培训20名高中教师、一名本科生和两名高中生。研究人员将开发一门高中课程,将重点放在将科学与学生当地的自然世界联系起来,这已被证明有助于提高学生的学习能力。由于对溶解有机碳(DOC)的机理知之甚少,因此,溶解有机碳(DOC)在微生物环路中的参与总体上仍然是一个谜。从分散的DOC池中组装微凝胶可能是研究DOC在公海中的生物反应性的关键因素。该项目旨在研究北太平洋DOC聚合物的形成,并评估它们在各种环境条件(pH、温度)下的生物反应性。北太平洋深水的DOC含量很低(35微米),但它的放射性碳年龄是公海上已知的最古老的(高达6000年),这使其成为理想的试验场,因为其生物反应性较低。这项研究的目标是开发在各种环境条件下将DOC聚合物聚集成微凝胶的机理模型,并可能使用这些信息来描述气候变化对这些过程的潜在影响。
项目成果
期刊论文数量(5)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Integrating Oceanographic Research into High School Curricula: Achieving Broader Impacts Through Systems Education Experiences Modules
将海洋学研究纳入高中课程:通过系统教育体验模块实现更广泛的影响
- DOI:10.5670/oceanog.2020.304
- 发表时间:2020
- 期刊:
- 影响因子:2.8
- 作者:Orellana, Mónica;Ludwig, Claudia;Thompson, Anne;Baliga, Nitin
- 通讯作者:Baliga, Nitin
Global Average Potassium Isotope Composition of Modern Seawater
现代海水的全球平均钾同位素组成
- DOI:10.1021/acsearthspacechem.0c00047
- 发表时间:2020
- 期刊:
- 影响因子:3.4
- 作者:Wang, Kun;Close, Hilary G.;Tuller-Ross, Brenna;Chen, Heng
- 通讯作者:Chen, Heng
Seasonality of Dissolved Organic Carbon in the Upper Northeast Pacific ocean
- DOI:10.1029/2018gb006152
- 发表时间:2019-05-01
- 期刊:
- 影响因子:5.2
- 作者:Bif, Mariana B.;Hansell, Dennis A.
- 通讯作者:Hansell, Dennis A.
High Temporal Variability of Total Organic Carbon in the Deep Northeastern Pacific
- DOI:10.3389/feart.2020.00080
- 发表时间:2020-03-27
- 期刊:
- 影响因子:2.9
- 作者:Lopez, Chelsi N.;Robert, Marie;Hansell, Dennis A.
- 通讯作者:Hansell, Dennis A.
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Monica Orellana其他文献
Monica Orellana的其他文献
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{{ truncateString('Monica Orellana', 18)}}的其他基金
EAGER: Diatom Programmed Cell Death at Single-Cell Resolution
EAGER:单细胞分辨率下的硅藻程序性细胞死亡
- 批准号:
2029738 - 财政年份:2020
- 资助金额:
$ 87.74万 - 项目类别:
Standard Grant
Ocean Acidification: A Systems Biology Approach to Characterize Diatom Response to Ocean Acidification and Climate Change
海洋酸化:表征硅藻对海洋酸化和气候变化响应的系统生物学方法
- 批准号:
1316206 - 财政年份:2013
- 资助金额:
$ 87.74万 - 项目类别:
Standard Grant
EAGER: Marine biopolymers as tracers of major biogeochemical processes: Using proteomics and antibody-sensor technology
EAGER:海洋生物聚合物作为主要生物地球化学过程的示踪剂:使用蛋白质组学和抗体传感器技术
- 批准号:
1219537 - 财政年份:2012
- 资助金额:
$ 87.74万 - 项目类别:
Standard Grant
Collaborative Research: TRacing the fate of Algal Carbon Export in the Ross Sea (TRACERS)
合作研究:追踪罗斯海藻碳输出的命运 (TRACERS)
- 批准号:
1142049 - 财政年份:2012
- 资助金额:
$ 87.74万 - 项目类别:
Standard Grant
Collaborative research: A systems biology approach of diatom response to ocean acidification and climate change
合作研究:硅藻对海洋酸化和气候变化响应的系统生物学方法
- 批准号:
0928561 - 财政年份:2009
- 资助金额:
$ 87.74万 - 项目类别:
Standard Grant
Collaborative Research: Marine microgels: A microlayer source of summer CCN in high Arctic open leads
合作研究:海洋微凝胶:北极高海拔地区夏季 CCN 的微层来源
- 批准号:
0707555 - 财政年份:2007
- 资助金额:
$ 87.74万 - 项目类别:
Standard Grant
Carbon Sequestration: Tracing the Source and Fate of Marine Biopolymers using Proteomics and Antibody Display Technology
碳封存:利用蛋白质组学和抗体显示技术追踪海洋生物聚合物的来源和归宿
- 批准号:
0452563 - 财政年份:2005
- 资助金额:
$ 87.74万 - 项目类别:
Standard Grant
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