Collaborative Research: Are Amazon forest trees source or sink limited? Mapping hydraulic traits to carbon allocation strategies to decipher forest function during drought
合作研究:亚马逊森林树木的来源或汇是否有限?
基本信息
- 批准号:1754803
- 负责人:
- 金额:$ 104.94万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2018
- 资助国家:美国
- 起止时间:2018-07-15 至 2023-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Understanding how large expanses of tropical forests will respond to climate variation, including increasing frequency of droughts, is important since these forests play a big role in the planet's carbon cycle. This award provides funds to study how the Amazon forest will respond to droughts such as experienced in the recent El Nino. Researchers will examine how individual species capture and use carbon and water, and use that data to understand how biodiversity of species makes the whole forest more resilient to droughts. The results will be integrated to model and predict how differences in forest species composition result in differences in whole-forest responses to drought. This award will evaluate how composition of biological communities influences their overall function and the effects of future changes on entire tropical forests. The project will advance international collaboration and the training of U.S. undergraduates to do research in Brazil. Increased public awareness of these issues will occur through outreach programs at the Biosphere 2, and a Science Festival which facilitates targeted presentations about the Amazon to 100+ middle-high school students/year. The science of plant drought response has largely assumed that environment regulates photosynthetic source of carbon ('C-source regulation'), which is then allocated to growth and other functions according to fixed allometric rules. There is an emerging view, however, that within-plant C-sink processes (growth, storage, and respiration) are directly regulated by the environment and by within-plant feedbacks (the 'C-sink regulation' hypothesis), such that changes in allocation and sink processes are a key mechanism of drought response. Realistically propagating such mechanisms to the ecosystem scale requires accounting for species-specific strategies that vary across the plant economic spectrum. To realistically test this hypothesis, the following challenges will be me through integrating measurements of tree C-source (photosynthesis) and C-sink (growth, storage, respiration) processes across a range of hydraulic traits to identify regulating mechanisms; Upscaling the mechanisms of drought response to the ecosystem level by focusing on distributions of both resources and plant hydraulic traits mapped to the plant economic spectrum; and Observing the ecosystem-scale photosynthetic C source (Gross Ecosystem Productivity, GEP) and water loss by transpiration. This evaluation of the controls on tree C-source and C-sink processes - including the Kok effect, Non-Structural C storage, and plant water relations - will transform our understanding of Amazon forest C dynamics and assessment of the forest's future under climate change.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.
了解大片热带森林将如何应对气候变化,包括干旱频率的增加,这一点很重要,因为这些森林在地球的碳循环中发挥着重要作用。该奖项提供资金,研究亚马逊森林将如何应对干旱,如最近的厄尔尼诺现象。研究人员将研究单个物种如何捕获和利用碳和水,并利用这些数据来了解物种的生物多样性如何使整个森林更能抵御干旱。研究结果将被整合到模型中,并预测森林物种组成的差异如何导致整个森林对干旱反应的差异。该奖项将评估生物群落的组成如何影响其整体功能以及未来变化对整个热带森林的影响。该项目将促进国际合作和美国本科生在巴西进行研究的培训。通过生物圈二号的外展计划和科学节,将提高公众对这些问题的认识,科学节每年向100多名中学生介绍亚马逊地区的情况。植物干旱响应科学在很大程度上假设环境调节光合作用碳源(“C源调节”),然后根据固定的异速生长规则将其分配给生长和其他功能。然而,有一种新的观点认为,植物内C-汇过程(生长,储存和呼吸)直接受环境和植物内反馈('C-汇调节'假说),这样的分配和汇过程的变化是干旱响应的一个关键机制。现实地传播这种机制的生态系统规模需要会计的物种特异性的策略,不同的植物经济谱。为了现实地检验这一假设,下面的挑战将是我通过整合测量树C源(光合作用)和C-汇(生长、储存、呼吸)过程,以确定调节机制;通过关注资源和植物水力特性的分布,将干旱响应机制提升到生态系统水平,绘制植物经济谱;观测生态系统尺度的光合碳源(Gross Ecosystem Productivity,GEP)和蒸腾耗水量。本文对树木碳源和碳汇过程的控制进行了评价,包括Kok效应,非结构碳储存,和植物与水的关系该奖项反映了NSF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进行评估,被认为值得支持的搜索.
项目成果
期刊论文数量(10)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
B24E-02 Photosynthesis and evapotranspiration along central Amazonia during an extreme drought event. AGU Fall 2019 meeting, San Francisco, CA, USA.
B24E-02 极端干旱事件期间亚马逊流域中部的光合作用和蒸散量。
- DOI:
- 发表时间:2019
- 期刊:
- 影响因子:0
- 作者:De Araujo, A C.
- 通讯作者:De Araujo, A C.
Calculating canopy stomatal conductance from eddy covariance measurements, in light of the energy budget closure problem
根据能量预算闭合问题,根据涡度协方差测量计算冠层气孔导度
- DOI:10.5194/bg-18-13-2021
- 发表时间:2021
- 期刊:
- 影响因子:4.9
- 作者:Wehr, Richard;Saleska, Scott R.
- 通讯作者:Saleska, Scott R.
Importance of hydraulic strategy trade-offs in structuring response of canopy trees to extreme drought in central Amazon
- DOI:10.1007/s00442-021-04924-9
- 发表时间:2021-05-05
- 期刊:
- 影响因子:2.7
- 作者:Garcia, Maquelle Neves;Ferreira, Marciel Jose;Oliveira, Rafael Silva
- 通讯作者:Oliveira, Rafael Silva
Diverse anthropogenic disturbances shift Amazon forests along a structural spectrum
各种人为干扰使亚马逊森林发生结构变化
- DOI:10.1002/fee.2590
- 发表时间:2023
- 期刊:
- 影响因子:10.3
- 作者:Smith, Marielle N;Stark, Scott C;Taylor, Tyeen C;Schietti, Juliana;de Almeida, Danilo Roberti;Aragón, Susan;Torralvo, Kelly;Lima, Albertina P;de Oliveira, Gabriel;de Assis, Rafael Leandro
- 通讯作者:de Assis, Rafael Leandro
Amazon forest responses to drought: scaling from individuals to ecosystems
亚马逊森林对干旱的反应:从个体到生态系统
- DOI:10.5194/egusphere-egu2020-12746
- 发表时间:2020
- 期刊:
- 影响因子:0
- 作者:Saleska, S. R.
- 通讯作者:Saleska, S. R.
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
数据更新时间:{{ journalArticles.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ monograph.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ sciAawards.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ conferencePapers.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ patent.updateTime }}
Scott Saleska其他文献
Scott Saleska的其他文献
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
{{ truncateString('Scott Saleska', 18)}}的其他基金
Collaborative Research: RAPID: A perfect storm: will the double-impact of 2023/24 El Nino drought and forest degradation induce a local tipping-point onset in the eastern Amazon?
合作研究:RAPID:一场完美风暴:2023/24厄尔尼诺干旱和森林退化的双重影响是否会导致亚马逊东部地区出现局部临界点?
- 批准号:
2403883 - 财政年份:2024
- 资助金额:
$ 104.94万 - 项目类别:
Standard Grant
Collaborative research: Cascade “Ecohydromics” in the Amazonian Headwater System
合作研究:亚马逊河源头系统的级联“生态水文学”
- 批准号:
2106804 - 财政年份:2022
- 资助金额:
$ 104.94万 - 项目类别:
Standard Grant
Collaborative Research: GCR: Growing a New Science of Landscape Terraformation: The Convergence of Rock, Fluids, and Life to form Complex Ecosystems Across Scales
合作研究:GCR:发展景观改造的新科学:岩石、流体和生命的融合形成跨尺度的复杂生态系统
- 批准号:
2121155 - 财政年份:2021
- 资助金额:
$ 104.94万 - 项目类别:
Continuing Grant
NRT‐URoL: BRIDGES ‐ Building Resources for InterDisciplinary training in Genomic and Ecosystem Sciences
NRT – URoL:桥梁 – 为基因组和生态系统科学跨学科培训构建资源
- 批准号:
2022055 - 财政年份:2020
- 资助金额:
$ 104.94万 - 项目类别:
Standard Grant
Collaborative Research: The other side of tropical forest drought: Do shallow water table regions of Amazonia act as large-scale hydrological refugia from drought?
合作研究:热带森林干旱的另一面:亚马逊流域的浅水位区域是否可以作为干旱的大型水文避难所?
- 批准号:
1949894 - 财政年份:2020
- 资助金额:
$ 104.94万 - 项目类别:
Standard Grant
RAPID: Observations of carbon, water, and vegetation dynamics during and after the 2015/2016 El Nino drought to test models of climate-change induced Amazon forest 'dieback'
RAPID:对 2015/2016 年厄尔尼诺干旱期间和之后的碳、水和植被动态进行观测,以测试气候变化引起的亚马逊森林“枯死”模型
- 批准号:
1622721 - 财政年份:2016
- 资助金额:
$ 104.94万 - 项目类别:
Standard Grant
Dimensions US-Biota-Sao Paulo: Collaborative Research: Integrating Dimensions Of Microbial Biodiversity Across Land Use Change In Tropical Forests
维度 US-Biota-圣保罗:合作研究:整合热带森林土地利用变化中微生物生物多样性的维度
- 批准号:
1442152 - 财政年份:2015
- 资助金额:
$ 104.94万 - 项目类别:
Standard Grant
Collaborative Research: Investigating Northern Peatland Methane Dynamics by Synthesizing Measurements, Remote Sensing and Modeling from Local to Regional to Continental Scales
合作研究:通过综合测量、遥感和从地方到区域到大陆尺度的建模来研究北部泥炭地甲烷动态
- 批准号:
1241962 - 财政年份:2013
- 资助金额:
$ 104.94万 - 项目类别:
Standard Grant
CRPA: How do We Learn the Fate of Tropical Forests under Climate Change? -- A Multimedia Exhibition of Photographic Art Portraying Scientists and Students at Work in Amazonia
CRPA:我们如何了解气候变化下热带森林的命运?
- 批准号:
1209899 - 财政年份:2012
- 资助金额:
$ 104.94万 - 项目类别:
Standard Grant
Ecosystem Transitions from Andean Cloud Forest to the Lowland Amazon:a Pan-American Advanced Studies Institute on Tropical ecology, Biogeochemistry, and Climate in Peru; June, 2011
从安第斯云林到亚马逊低地的生态系统转变:秘鲁热带生态、生物地球化学和气候泛美高级研究所;
- 批准号:
1036400 - 财政年份:2010
- 资助金额:
$ 104.94万 - 项目类别:
Standard Grant
相似国自然基金
复杂电子产品超精密加工及检测关键技术研究与应用
- 批准号:
- 批准年份:2025
- 资助金额:0.0 万元
- 项目类别:省市级项目
基于合成生物学的动物底盘品种优化及中试应用研究
- 批准号:
- 批准年份:2025
- 资助金额:0.0 万元
- 项目类别:省市级项目
运用组学整合技术探索萆薢分清散联合化疗治疗晚期胰腺癌的临床研究
- 批准号:
- 批准年份:2025
- 资助金额:0.0 万元
- 项目类别:省市级项目
九里香等提取物多靶向制剂抗肺癌的作用及机制研究
- 批准号:
- 批准年份:2025
- 资助金额:0.0 万元
- 项目类别:省市级项目
升血小板方治疗原发免疫性血小板减少症的临床研究
- 批准号:
- 批准年份:2025
- 资助金额:0.0 万元
- 项目类别:省市级项目
八髎穴微波热疗在女性膀胱过度活动症治疗中的价值研究
- 批准号:
- 批准年份:2025
- 资助金额:0.0 万元
- 项目类别:省市级项目
基于 miR-455-5p 介导的氧化应激机制探讨糖尿病视网膜病变中医分型治疗的临床研究
- 批准号:
- 批准年份:2025
- 资助金额:0.0 万元
- 项目类别:省市级项目
基于 UPLC-Q-TOF-MS/MS 分析的 异功散活性成分评价及提取工艺研究
- 批准号:
- 批准年份:2025
- 资助金额:0.0 万元
- 项目类别:省市级项目
无创电针对于痉挛型双瘫脑 瘫患儿的有效性与安全性研究:一项随机 单盲前瞻性队列研究
- 批准号:
- 批准年份:2025
- 资助金额:0.0 万元
- 项目类别:省市级项目
弹压式手法与体外冲击波治疗肱骨外上髁炎的对比研究
- 批准号:
- 批准年份:2025
- 资助金额:0.0 万元
- 项目类别:省市级项目
相似海外基金
Collaborative Research: RAPID: A perfect storm: will the double-impact of 2023/24 El Nino drought and forest degradation induce a local tipping-point onset in the eastern Amazon?
合作研究:RAPID:一场完美风暴:2023/24厄尔尼诺干旱和森林退化的双重影响是否会导致亚马逊东部地区出现局部临界点?
- 批准号:
2403883 - 财政年份:2024
- 资助金额:
$ 104.94万 - 项目类别:
Standard Grant
Collaborative Research: RAPID: A perfect storm: will the double-impact of 2023/24 El Nino drought and forest degradation induce a local tipping-point onset in the eastern Amazon?
合作研究:RAPID:一场完美风暴:2023/24厄尔尼诺干旱和森林退化的双重影响是否会导致亚马逊东部地区出现局部临界点?
- 批准号:
2403882 - 财政年份:2024
- 资助金额:
$ 104.94万 - 项目类别:
Standard Grant
RAPID: Collaborative Research: Tracking Amazon Forest Fires from Source to Sink
RAPID:合作研究:追踪亚马逊森林火灾从源头到汇点
- 批准号:
2000127 - 财政年份:2019
- 资助金额:
$ 104.94万 - 项目类别:
Standard Grant
RAPID: Collaborative Research: Tracking Amazon Forest Fires from Source to Sink
RAPID:合作研究:追踪亚马逊森林火灾从源头到汇点
- 批准号:
2000097 - 财政年份:2019
- 资助金额:
$ 104.94万 - 项目类别:
Standard Grant
Belmont Forum Collaborative Research: Balancing BiOdiversity CoNservation with Development in Amazon WetlandS
贝尔蒙特论坛合作研究:平衡亚马逊湿地生物多样性保护与发展
- 批准号:
1852113 - 财政年份:2019
- 资助金额:
$ 104.94万 - 项目类别:
Continuing Grant
Belmont Forum Collaborative Research: Balancing biodiversity conservation with development in Amazon wetlands
贝尔蒙特论坛合作研究:平衡亚马逊湿地生物多样性保护与发展
- 批准号:
1851993 - 财政年份:2019
- 资助金额:
$ 104.94万 - 项目类别:
Continuing Grant
Collaborative Research: Assessing climate-biosphere linkages using Late Holocene records of climate variability and vegetation dynamics from the Brazilian Amazon and Savanna
合作研究:利用巴西亚马逊和稀树草原的全新世晚期气候变化和植被动态记录评估气候与生物圈的联系
- 批准号:
1912100 - 财政年份:2018
- 资助金额:
$ 104.94万 - 项目类别:
Standard Grant
Collaborative Research: Trans-Amazon Drilling Project
合作研究:跨亚马逊钻探项目
- 批准号:
1812681 - 财政年份:2018
- 资助金额:
$ 104.94万 - 项目类别:
Standard Grant
Collaborative Research: Trans-Amazon Drilling Project
合作研究:跨亚马逊钻探项目
- 批准号:
1812752 - 财政年份:2018
- 资助金额:
$ 104.94万 - 项目类别:
Standard Grant
Collaborative Research: Impact of the Amazon River Plume on Nitrogen Availability and Planktonic Food Web Dynamics in the Western Tropical North Atlantic
合作研究:亚马逊河羽流对北大西洋西部热带地区氮可用性和浮游食物网动态的影响
- 批准号:
1736947 - 财政年份:2018
- 资助金额:
$ 104.94万 - 项目类别:
Standard Grant