CAREER: Towards Forecasting Watershed Organic Carbon Fluxes across Flow Regimes and Ecoregions

职业：预测跨流域和生态区的流域有机碳通量

• 批准号: 1846855
• 负责人: Jay Zarnetske
• 金额: $ 47万
• 依托单位: Michigan State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-02-15 至 2025-01-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1846855&HistoricalAwards=false
• 关键词: CAREER; Towards; Forecasting; Watershed; Organic

When water flows through ecosystems it picks up dissolved organic carbon (DOC) from plants and soils. As a result, water can control whether an ecosystem releases carbon (a carbon source) or stores carbon (a carbon sink). Consequently, the movement of water plays a key role in global carbon cycling, but DOC is also an important control on water quality across the globe. Understanding how water affects the production and movement of DOC can improve society's ability to provide water for industrial, agricultural, and domestic uses. How and when DOC moves through different types of rivers and ecosystems, especially during floods, is a major knowledge gap in carbon cycling and water quality research. This project will conduct analyses of river DOC dynamics from geographically diverse areas. The project will examine movement of DOC into and out of watersheds and evaluate if DOC dynamics can be estimated from local to continental regions using river flow and watershed properties. This DOC research is combined with an innovative education plan that will improve the translation of hydrological sciences to public audiences via undergraduate curriculum development and student-led scientific outreach. These advances will focus on training students to be effective science communicators and outreach practitioners.Given the global importance of riverine dissolved organic carbon (DOC), and uncertainty in the light of climate and land use change, the main objectives of this proposal are to test assumptions of watershed DOC flux behavior and to develop new ways to quantify and forecast DOC flux across understudied flow regimes and ecoregions. These objectives will be addressed through multiple approaches, including data synthesis, modeling, and new sensor technologies that will identify the key watershed and climate conditions controlling DOC flux across diverse landscapes. The project integrates these research objectives and general hydrologic science issues with a long-term education plan to establish innovative curriculum development and methods for creating effective outreach materials for multiple public stakeholder groups, including K-12, life-learners, and policy makers. The new curriculum employs novel human-centered design theory and partnerships with five expert outreach institutions to create meaningful experiential learning opportunities that are underrepresented in most science curricula. Through this project, the PI and the associated students will be integrated with the NSF-supported Kellogg Biological Station and Arctic Long-term Ecological Research (LTER) site research communities and a broader impact network of five community-serving outreach institutions.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

当水流经生态系统时，它会从植物和土壤中吸收溶解的有机碳(DOC)。因此，水可以控制生态系统是释放碳(碳源)还是储存碳(碳汇)。因此，水的运动在全球碳循环中起着关键作用，但DOC也是全球水质的重要控制因素。了解水如何影响DOC的生产和移动，可以提高社会为工业、农业和生活用水提供水的能力。DOC如何以及何时通过不同类型的河流和生态系统，特别是在洪水期间，是碳循环和水质研究中的一个主要知识空白。该项目将对不同地理区域的河流DOC动态进行分析。该项目将研究DOC进出流域的移动，并评估是否可以利用河流流量和流域特性来估计从当地到大陆地区的DOC动态。DOC的这项研究与一项创新的教育计划相结合，该计划将通过本科生课程开发和学生主导的科学推广，改善向公众传播水文科学的工作。这些进展将侧重于培养学生成为有效的科学传播者和外展实践者。鉴于河流溶解有机碳(DOC)的全球重要性，以及气候和土地利用变化的不确定性，本提案的主要目标是检验流域DOC通量行为的假设，并开发新的方法来量化和预测未被充分研究的水流系统和生态区域的DOC通量。这些目标将通过多种方法来实现，包括数据合成、建模和新的传感器技术，这些技术将确定控制不同景观中DOC通量的关键分水岭和气候条件。该项目将这些研究目标和一般水文科学问题与长期教育计划结合起来，以建立创新的课程开发和方法，为包括K-12、生活学习者和政策制定者在内的多个公共利益攸关方群体创建有效的宣传材料。新课程采用了新颖的以人为本的设计理论，并与五个专家外展机构建立了伙伴关系，以创造有意义的体验式学习机会，而这些机会在大多数科学课程中都没有得到充分的体现。通过这个项目，PI和相关的学生将与NSF支持的凯洛格生物站和北极长期生态研究(LTER)现场研究社区以及由五个社区服务的外展机构组成的更广泛的影响网络相结合。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Advancing river corridor science beyond disciplinary boundaries with an inductive approach to catalyse hypothesis generation

通过归纳方法促进假设生成，推动河流廊道科学超越学科界限

• DOI: 10.1002/hyp.14540
• 发表时间: 2022
• 期刊: Hydrological Processes
• 影响因子: 3.2
• 作者: Ward, Adam S.;Packman, Aaron;Bernal, Susana;Brekenfeld, Nicolai;Drummond, Jen;Graham, Emily;Hannah, David M.;Klaar, Megan;Krause, Stefan;Kurz, Marie
• 通讯作者: Kurz, Marie

Hydrology Controls Dissolved Organic Carbon and Nitrogen Export and Post‐Storm Recovery in Two Arctic Headwaters

• DOI: 10.1029/2023jg007583
• 发表时间: 2024-02
• 期刊: Journal of Geophysical Research: Biogeosciences
• 作者: Arial J. Shogren;J. Zarnetske;Benjamin W. Abbott;Amelia L. Grose;Abigail F. Rec;Jansen Nipko;Chao Song;J. O’Donnell;William B. Bowden

Arctic concentration–discharge relationships for dissolved organic carbon and nitrate vary with landscape and season

• DOI: 10.1002/lno.11682
• 发表时间: 2020-12
• 期刊: Limnology and Oceanography
• 影响因子: 4.5
• 作者: Arial J. Shogren;J. Zarnetske;Benjamin W. Abbott;F. Iannucci;Alexander Medvedeff;Samuel T Cairns;M. Duda;W. Bowden

Organizational Principles of Hyporheic Exchange Flow and Biogeochemical Cycling in River Networks Across Scales

• DOI: 10.1029/2021wr029771
• 发表时间: 2022-02
• 期刊: Water Resources Research
• 影响因子: 5.4
• 作者: S. Krause;Benjamin W. Abbott;V. Baranov;S. Bernal;P. Blaen;T. Datry;J. Drummond;J. Fleckenstein;Jesus Gomez Velez;D. Hannah;J. Knapp;M. Kurz;J. Lewandowski;E. Martí;C. Mendoza‐Lera;A. Milner;A. Packman;G. Pinay;A. Ward;Jay P. Zarnetzke

Light and hydrologic connectivity drive dissolved oxygen synchrony in stream networks

光和水文连通性驱动河流网络中溶解氧的同步

• DOI: 10.1002/lno.12271
• 发表时间: 2022
• 期刊: Limnology and Oceanography
• 影响因子: 4.5
• 作者: Diamond, Jacob S.;Pinay, Gilles;Bernal, Susana;Cohen, Matthew J.;Lewis, David;Lupon, Anna;Zarnetske, Jay;Moatar, Florentina
• 通讯作者: Moatar, Florentina