Global S&T Development Trend Analysis Platform of Resources and Environment
项目编号 | 1634250 |
Collaborative Research: DOC Removal in the Ocean According to Polymer Gel Theory | |
Dennis Hansell | |
主持机构 | University of Miami Rosenstiel School of Marine&Atmospheric Sci |
项目开始年 | 2016 |
2016-10-01 | |
项目结束日期 | 2019-09-30 |
资助机构 | US-NSF |
项目类别 | Standard Grant |
项目经费 | 253380(USD) |
国家 | 美国 |
语种 | 英语 |
英文摘要 | 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. |
来源学科分类 | Geosciences - Ocean Sciences |
文献类型 | 项目 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/70486 |
专题 | 环境与发展全球科技态势 |
推荐引用方式 GB/T 7714 | Dennis Hansell.Collaborative Research: DOC Removal in the Ocean According to Polymer Gel Theory.2016. |
条目包含的文件 | 条目无相关文件。 |
个性服务 |
推荐该条目 |
保存到收藏夹 |
查看访问统计 |
导出为Endnote文件 |
谷歌学术 |
谷歌学术中相似的文章 |
[Dennis Hansell]的文章 |
百度学术 |
百度学术中相似的文章 |
[Dennis Hansell]的文章 |
必应学术 |
必应学术中相似的文章 |
[Dennis Hansell]的文章 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论