Collaborative Research: TERRG: Thresholds in ecosystem responses to rainfall gradients
合作研究:TERRG:生态系统对降雨梯度响应的阈值
基本信息
- 批准号:2039228
- 负责人:
- 金额:$ 83万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2020
- 资助国家:美国
- 起止时间:2020-06-08 至 2024-08-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The biology and chemistry of streams change in response to changes in temperature and rainfall patterns. Changes in temperature and precipitation may lead to predictable changes in the biology and chemistry of streams, while other changes are abrupt and unpredictable. In the face of environmental change, we need to understand the environmental conditions that result in predictable and abrupt responses to both the biology and chemistry of streams. This award will support research on understanding biological controls and environmental constraints on the structure and function of streams in South Texas. The research will take advantage of a semi-arid to mesic rainfall gradient that features an abrupt shift in stream community composition and ecosystem functioning at 85 cm rainfall/yr. The research will consist of a mix of field observations, manipulative experiments, and modeling. Training of undergraduate (including minority) and graduate students and outreach via an established K-12 program will contribute to the project?s broader impacts.This project will advance our understanding of why subtle shifts in the environment can result in the significant and abrupt reorganization of ecological communities. Spatial patterns in structure and function of ecosystems along precipitation gradients indicate that threshold effects are common and widespread. Therefore, understanding the mechanisms that drive these patterns is essential for forecasting which regions of the world will undergo rapid ecosystem shifts under future environmental change. Stream ecosystems are particularly sensitive to changes in precipitation, but multiple mechanisms can be invoked to explain observed threshold effects in streams. These mechanisms include: 1) Changes in the quantity, quality, temporal stability, and predictability of the resource base, which cascade up to higher trophic levels; and conversely, 2) Changes in the temporal stability, predictability, and average environmental conditions impacting community structure, which then cascade down to ecosystem processes. By exploring these alternate and potentially simultaneously operating mechanistic hypotheses in a set of streams along a precipitation gradient in South Texas, the research will capitalize on an ideal natural experiment along with a strong foundation of preliminary data collected by the principal investigators. The results of this study will in turn inform our understanding of how similar processes operate in stream ecosystems around the world, and the basic principles will enhance our understanding of these processes in all ecosystems. The award will support training of undergraduate, graduate, postdoctoral scholars, and early career faculty at both a Hispanic Serving Institution and a primarily undergraduate institution serving 40% minorities. Undergraduates will conduct independent research and present the results at professional meetings. K-12 outreach and adult education will be conducted through the SIU Center for Ecology and Graduate Research Assistants Supporting Science (GRASS) program.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.
河流的生物和化学会随着温度和降雨模式的变化而变化。温度和降水的变化可能会导致河流的生物和化学发生可预测的变化,而其他变化是突然和不可预测的。面对环境变化,我们需要了解导致对河流的生物和化学都做出可预测和突然反应的环境条件。该奖项将支持对南得克萨斯州河流结构和功能的生物控制和环境限制的研究。这项研究将利用半干旱到中等降雨量的梯度,其特点是溪流群落组成和生态系统功能在每年85厘米的降雨量下突然转变。这项研究将包括实地观察、操纵实验和建模。对本科生(包括少数民族)和研究生的培训,以及通过既定的K-12项目进行推广,将有助于该项目-S更广泛的影响。该项目将增进我们对为什么环境的细微变化会导致生态群落重大而突然的重组的理解。生态系统结构和功能沿降水梯度的空间格局表明,阈值效应是普遍和普遍的。因此,了解驱动这些模式的机制对于预测世界上哪些地区在未来环境变化下将经历快速的生态系统变化至关重要。河流生态系统对降水量的变化特别敏感,但可以援引多种机制来解释河流中观察到的阈值效应。这些机制包括:1)资源基础的数量、质量、时间稳定性和可预测性的变化,这些变化层叠到更高的营养水平;反之,影响群落结构的时间稳定性、可预测性和平均环境条件的变化,然后向下传递到生态系统过程。通过在德克萨斯州南部沿降水梯度的一组溪流中探索这些交替的、可能同时运行的机制假设,这项研究将利用理想的自然实验以及主要研究人员收集的初步数据的坚实基础。这项研究的结果将反过来告知我们对类似过程如何在世界各地的河流生态系统中运行的理解,基本原则将加强我们对所有生态系统中这些过程的理解。该奖项将支持在西班牙裔服务机构和服务于40%少数族裔的主要本科生机构培训本科生、研究生、博士后学者和早期职业教师。本科生将进行独立研究,并在专业会议上展示结果。K-12外展和成人教育将通过SIU生态学中心和支持科学(GRASS)计划的研究生研究助理进行。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
期刊论文数量(2)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Structure and functional composition of macroinvertebrate communities in coastal plain streams across a precipitation gradient
- DOI:10.1111/fwb.13968
- 发表时间:2022-07
- 期刊:
- 影响因子:2.7
- 作者:F. Carvallo;Bradley A. Strickland;Sean Kinard;B. Reese;J. D. Hogan;C. Patrick
- 通讯作者:F. Carvallo;Bradley A. Strickland;Sean Kinard;B. Reese;J. D. Hogan;C. Patrick
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Christopher Patrick其他文献
Antisocial Personality Disorder: Neurophysiological Mechanisms and Distinct Subtypes
- DOI:
10.1007/s40473-018-0142-0 - 发表时间:
2018-01-25 - 期刊:
- 影响因子:1.000
- 作者:
Sean McKinley;Christopher Patrick;Edelyn Verona - 通讯作者:
Edelyn Verona
University of Birmingham Model-based controller design for a lift-and-drop railway track switch actuator
伯明翰大学基于模型的升降式铁路道岔执行器控制器设计
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
P. Kaijuka;R. Dixon;Christopher Patrick;Ward Dutta;Bemment Saikat Samuel;P. Kaijuka;C. Ward;Saikat Dutta;S. Bemment - 通讯作者:
S. Bemment
Threat Sensitivity is Related to Enhanced Contingent Negative Variation Amplitude During an Attention Network Test Under Threat of Shock
- DOI:
10.1016/j.biopsych.2021.02.875 - 发表时间:
2021-05-01 - 期刊:
- 影响因子:
- 作者:
James Yancey;Erin McGlade;Deborah Yurgelun-Todd;Christopher Patrick - 通讯作者:
Christopher Patrick
Christopher Patrick的其他文献
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{{ truncateString('Christopher Patrick', 18)}}的其他基金
RCN-HERS: Research Coordination Network for Hurricane Ecosystem Response Synthesis
RCN-HERS:飓风生态系统响应综合研究协调网络
- 批准号:
2003292 - 财政年份:2021
- 资助金额:
$ 83万 - 项目类别:
Standard Grant
Collaborative Research: RAPID: Quantifying the response of stream ecosystems to a punctuated cold-stress disturbance across a semi-arid to sub-humid gradient
合作研究:RAPID:量化河流生态系统对半干旱到半湿润梯度间断冷应激干扰的响应
- 批准号:
2128281 - 财政年份:2021
- 资助金额:
$ 83万 - 项目类别:
Standard Grant
Collaborative Proposal: MRA: Teleconnections Among Great Plains NEON Sites by Wind and Wing
合作提案:MRA:Wind 和 Wing 大平原 NEON 站点之间的远程连接
- 批准号:
1926565 - 财政年份:2020
- 资助金额:
$ 83万 - 项目类别:
Standard Grant
Collaborative Proposal: MRA: Teleconnections Among Great Plains NEON Sites by Wind and Wing
合作提案:MRA:Wind 和 Wing 大平原 NEON 站点之间的远程连接
- 批准号:
2027378 - 财政年份:2020
- 资助金额:
$ 83万 - 项目类别:
Standard Grant
Ecosystem Responses to Hurricanes Synthesis Workshop
生态系统对飓风的反应综合研讨会
- 批准号:
2037696 - 财政年份:2020
- 资助金额:
$ 83万 - 项目类别:
Standard Grant
Ecosystem Responses to Hurricanes Synthesis Workshop
生态系统对飓风的反应综合研讨会
- 批准号:
1903760 - 财政年份:2019
- 资助金额:
$ 83万 - 项目类别:
Standard Grant
Collaborative Research: TERRG: Thresholds in ecosystem responses to rainfall gradients
合作研究:TERRG:生态系统对降雨梯度响应的阈值
- 批准号:
1927645 - 财政年份:2019
- 资助金额:
$ 83万 - 项目类别:
Standard Grant
RAPID: Measuring the response of stream communities to Hurricane Harvey across a semi-arid to sub-humid gradient
RAPID:测量半干旱到半湿润梯度河流群落对飓风哈维的响应
- 批准号:
1761677 - 财政年份:2017
- 资助金额:
$ 83万 - 项目类别:
Standard Grant
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