| 项目编号: | 1726177
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| 项目名称: | MRI: Acquisition of a total organic carbon analyzer for undergraduate training and research quantifying how climate-glacier interactions impact land-to-ocean fluxes of carbon |
| 作者: | Jason Fellman
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| 承担单位: | University of Alaska Southeast Juneau Campus
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| 批准年: | 2017
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| 开始日期: | 2017-09-01
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| 结束日期: | 2018-08-31
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| 资助金额: | 50277
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| 资助来源: | US-NSF
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| 项目类别: | Standard Grant
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| 国家: | US
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| 语种: | 英语
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| 特色学科分类: | Geosciences - Earth Sciences
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| 英文关键词: | lateral carbon export
; acquisition
; organic carbon
; instrument
; doc/tdn analyzer
; usfs pacific northwest research station
; research application
; biophysical impact
; research training opportunity
; undergraduate training
; nutrient flux
; stream biogeochemistry research effort
; doc
; doc flux
; climate-glacier interaction
|
| 英文摘要: | EAR-1726177
Fellman
This grant supports acquisition of a dissolved organic carbon (DOC) and total dissolved nitrogen (TDN) analyzer that will be located in a lab shared by the USFS Pacific Northwest Research Station and the University of Alaska Southeast. Acquisition of this instrument will provide the infrastructure necessary to quantify DOC fluxes from watersheds of varying glacial coverage, thus creating a space-for-time substitution to determine how climate-glacier interactions are driving ecological change in the region. The DOC/TDN analyzer will replace an aging, non-functional instrument that is located off campus and is owned by the USFS. Acquisition of this instrument will allow the investigators to reinvigorate stream biogeochemistry research efforts aimed at understanding the biophysical impacts of glacial change on coastal watersheds in southeast Alaska, facilitate access to the instrument by outside users, and enhance undergraduate training. In particular, the instrument will strengthen the research training opportunities for undergraduates in Environmental Science as well as provide the opportunity to recruit and train members of two groups (rural and Alaska Native students) that are traditionally highly under-represented in the Environmental Sciences.
The DOC/TDN analyzer allows for rapid and precise measurement of concentrations of DOC and TDN. Research applications include: 1) determining how climatically-driven changes in snow/rainfall regimes that influence the timing and magnitude of glacial runoff are driving stream water DOC and nutrient fluxes in the region, 2) quantifying the relationship between disinfection byproduct formation, DOC concentrations and precipitation event size in watersheds that currently or may provide drinking water in rural watersheds, 3) testing the use of DOC as a proxy for methylmercury concentrations in forested and wetland-dominated watersheds, and 4) determining how seasonal changes in the movement of water from soils to streams controls the production, speciation and timing of lateral carbon export from forested ecosystems. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/89169
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| Appears in Collections: | 全球变化的国际研究计划
科学计划与规划
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| Recommended Citation: | |
Jason Fellman. MRI: Acquisition of a total organic carbon analyzer for undergraduate training and research quantifying how climate-glacier interactions impact land-to-ocean fluxes of carbon. 2017-01-01.
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