EAGER SitS:Collaborative Research:Projecting Arctic soil and ecosystem responses to warming using SCAMPS: A stoichiometrically coupled, acclimating microbe-plant-soil model
EAGER SitS:合作研究:使用 SCAMPS 预测北极土壤和生态系统对变暖的反应:化学计量耦合的适应微生物-植物-土壤模型
基本信息
- 批准号:2051801
- 负责人:
- 金额:$ 9.64万
- 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:2020-09-01 至 2021-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Understanding future arctic terrestrial carbon balance is vital because high latitude soils contain about twice as much carbon as is in the atmosphere and its release would drive a major acceleration of atmospheric carbon dioxide accumulation. This research will advance the understanding of processes regulating the storage and release of carbon from arctic soils across biological and physical scales using a modeling approach. The study will promote both basic research into the controls on arctic soil and ecosystem processes and be applicable to management agencies by describing how linked biotic-abiotic responses to unprecedented warming may influence future carbon balance in Arctic terrestrial ecosystems. Further, this grant will help advance the career of an Assistant Professor at a primarily undergraduate institution, while enhancing gender and racial diversity in the biogeosciences. This research will also directly enhance undergraduate education in arctic biogeoscience through directed mentorship of undergraduate researchers; the research approach and findings will also be incorporated into courses and other teaching activities by the primary investigators.Field studies suggest that inconsistent responses to comparable experimental manipulations across arctic tundra ecosystems might be driven by local variation in the plant and decomposer community. However, the relative importance of, and links between, key biotic (e.g. microbial acclimation) and abiotic factors (e.g. altered snowpack, thaw depth, and nutrient availability) that govern these divergent responses of tundra to climate variation, remains unknown. This project will synthesize available data from ambient and experimental manipulations of arctic ecosystems. The investigators will then use the synthesis to refine, parameterize, and validate a changed version of the Stoichiometrically Coupled, Acclimating Microbe-Plant-Soil (SCAMPS) model. Simulations will explore how variation in seasonal warming and the acclimation potential of the soil microbial and plant community, encompassing community shifts, evolutionary adaptation, and physiological changes across tundra landscapes, affects biogeochemical feedbacks and regulates future carbon balance of arctic soils and ecosystems.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.
了解未来北极陆地碳平衡至关重要,因为高纬度土壤中的碳含量大约是大气中的两倍,而其释放将大大加速大气中二氧化碳的积累。本研究将通过建模方法促进对北极土壤碳在生物和物理尺度上的储存和释放过程的理解。这项研究将促进对北极土壤和生态系统过程控制的基础研究,并通过描述前所未有的变暖如何影响北极陆地生态系统未来碳平衡的生物-非生物反应,适用于管理机构。此外,这笔拨款将有助于促进助理教授在主要本科机构的职业生涯,同时增强生物地球科学领域的性别和种族多样性。本研究还将通过对本科研究人员的指导指导,直接加强北极生物地球科学的本科教育;研究方法和结果也将被纳入课程和其他教学活动的主要研究者。实地研究表明,北极冻土带生态系统对可比实验操作的不一致响应可能是由植物和分解者群落的局部变化驱动的。然而,控制冻土带对气候变化的这些不同反应的关键生物因素(如微生物适应)和非生物因素(如积雪、融化深度和养分有效性的改变)的相对重要性和它们之间的联系仍然未知。该项目将综合来自北极生态系统环境和实验操作的现有数据。然后,研究人员将使用合成来完善,参数化和验证化学计量耦合,适应微生物-植物-土壤(SCAMPS)模型的改变版本。模拟将探讨季节性变暖的变化和土壤微生物和植物群落的适应潜力,包括群落转移、进化适应和苔原景观的生理变化,如何影响生物地球化学反馈并调节北极土壤和生态系统的未来碳平衡。该奖项反映了美国国家科学基金会的法定使命,并通过使用基金会的知识价值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(3)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Soil bacterial communities vary more by season than with over two decades of experimental warming in Arctic tussock tundra
- DOI:10.1525/elementa.2021.00116
- 发表时间:2021-01
- 期刊:
- 影响因子:0
- 作者:G. Pold;J. Schimel;S. Sistla
- 通讯作者:G. Pold;J. Schimel;S. Sistla
Warming effects on arctic tundra biogeochemistry are limited but habitat‐dependent: a meta‐analysis
- DOI:10.1002/ecs2.3777
- 发表时间:2021-10
- 期刊:
- 影响因子:2.7
- 作者:G. Pold;Natalie Baillargeon;Adan Lepe;E. Rastetter;S. Sistla
- 通讯作者:G. Pold;Natalie Baillargeon;Adan Lepe;E. Rastetter;S. Sistla
Sporadic P limitation constrains microbial growth and facilitates SOM accumulation in the stoichiometrically coupled, acclimating microbe–plant–soil model
在化学计量耦合的适应微生物-植物-土壤模型中,零星的磷限制限制了微生物的生长并促进了 SOM 的积累
- DOI:10.1016/j.soilbio.2021.108489
- 发表时间:2022
- 期刊:
- 影响因子:9.7
- 作者:Pold, Grace;Kwiatkowski, Bonnie L.;Rastetter, Edward B.;Sistla, Seeta A.
- 通讯作者:Sistla, Seeta A.
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Seeta Sistla其他文献
Seeta Sistla的其他文献
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{{ truncateString('Seeta Sistla', 18)}}的其他基金
Collaborative Research: The Polaris Project - Catalyzing Change in the Arctic Research Community
合作研究:北极星项目 - 促进北极研究界的变化
- 批准号:
2218742 - 财政年份:2022
- 资助金额:
$ 9.64万 - 项目类别:
Standard Grant
Collaborative Research:SitS: Integrating Novel Greenhouse Gas Sensor Technology with Mechanistic Modeling to Improve Projections of Arctic Soil Responses to Climate Change and Fire
合作研究:SitS:将新型温室气体传感器技术与机械建模相结合,以改进北极土壤对气候变化和火灾响应的预测
- 批准号:
2034323 - 财政年份:2021
- 资助金额:
$ 9.64万 - 项目类别:
Standard Grant
Collaborative Research: The Polaris Project - Catalyzing Change in the Arctic Research Community
合作研究:北极星项目 - 促进北极研究界的变化
- 批准号:
1915300 - 财政年份:2019
- 资助金额:
$ 9.64万 - 项目类别:
Standard Grant
EAGER SitS:Collaborative Research:Projecting Arctic soil and ecosystem responses to warming using SCAMPS: A stoichiometrically coupled, acclimating microbe-plant-soil model
EAGER SitS:合作研究:使用 SCAMPS 预测北极土壤和生态系统对变暖的反应:化学计量耦合的适应微生物-植物-土壤模型
- 批准号:
1841610 - 财政年份:2018
- 资助金额:
$ 9.64万 - 项目类别:
Standard Grant
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