Climate change effects on coastal wetlands - Linking microbial community composition and ecosystem responses

气候变化对沿海湿地的影响 - 将微生物群落组成与生态系统响应联系起来

基本信息

  • 批准号:
    1355059
  • 负责人:
  • 金额:
    $ 78万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    2014
  • 资助国家:
    美国
  • 起止时间:
    2014-07-01 至 2018-06-30
  • 项目状态:
    已结题

项目摘要

Wetlands are dynamic habitats that are found at the interface of terrestrial and aquatic ecosystems. They function to cleanse polluted water, ameliorate floods, recharge groundwater aquifers, and support diverse flora and fauna. Regretfully, half of Earth's wetlands have been lost in recent times due to population expansion, pollution, coastal development, and other human activities. In addition to the ecosystem services mentioned above, wetlands are among the most biogeochemically active habitats on Earth. They have been identified as key sites for carbon sequestration and regulation of greenhouse gas emissions. These environments are very sensitive to environmental perturbation, and the effects of global climate change - especially sea level rise - are already evident. Sea level rise can bring saltwater into historically freshwater wetlands, changing the chemical reactions that take place in the sediment and the composition of soil microbial communities. This research provides a better understanding of freshwater wetland response to saltwater intrusion and specifically focuses on soil microorganisms and their roles in carbon sequestration and greenhouse gas emissions. In addition to its scientific contributions, this project advances both science education and public awareness of the threats facing tidal freshwater wetlands, and includes activities intended to educate the community (grade school children through adults) on basic aspects of environmental science.Microbial communities have historically been treated as a "black box" due to assumptions that there is a high level of functional redundancy and that microbial population dynamics (e.g., in response to global change) are unimportant. However, numerous recent studies have demonstrated that changes in microbial community composition can directly influence ecosystem process rates, motivating this study of the responses of microbial consortia to disturbance. The overall goal of this research is to link genomics-based characterization of soil microbial communities with process-level measurements of important ecosystem carbon transformations, and to examine their collective responses to environmental change. This research project includes both observational and manipulative experiments in the tidal freshwater and oligohaline marshes of the Pamunkey/York River system in Virginia, a major tributary of Chesapeake Bay. The project combines assessment of wetlands along an existing riverine salinity gradient, as a space-for-time substitution for future saltwater intrusion, with an in situ saltwater addition experiment that characterizes changes in the coupled microbe-plant-soil system. Molecular genetic analyses (16S sequencing, qPCR, and RT-qPCR) of the soil microbial communities, process rate measurements (iron and sulfate reduction, methanogenesis), and ecosystem carbon dioxide and methane exchanges are being used to develop a detailed mechanistic understanding of how compositional changes in microbial communities affect biogeochemical processes. This fundamental knowledge will pave the way for future research that effectively incorporates microbial communities into ecosystem process models.
湿地是陆地和水生生态系统交界处的动态栖息地。 它们的作用是净化受污染的水、缓解洪水、补充地下水含水层并支持多样化的动植物群。 遗憾的是,近年来,由于人口膨胀、污染、沿海开发和其他人类活动,地球上一半的湿地已经消失。 除了上述生态系统服务外,湿地还是地球上生物地球化学最活跃的栖息地之一。 它们已被确定为碳封存和温室气体排放监管的关键地点。 这些环境对环境扰动非常敏感,全球气候变化——尤其是海平面上升——的影响已经很明显。 海平面上升会将盐水带入历史上的淡水湿地,改变沉积物中发生的化学反应和土壤微生物群落的组成。 这项研究让人们更好地了解淡水湿地对咸水入侵的反应,并特别关注土壤微生物及其在碳封存和温室气体排放中的作用。 除了科学贡献外,该项目还提高了科学教育和公众对潮汐淡水湿地面临的威胁的认识,并包括旨在对社区(从小学生到成人)进行环境科学基本方面教育的活动。微生物群落历来被视为“黑匣子”,因为人们假设存在高度的功能冗余和微生物种群动态(例如,响应全球环境变化)。 变化)并不重要。 然而,最近的大量研究表明,微生物群落组成的变化可以直接影响生态系统过程速率,从而激发了对微生物群落对干扰的响应的研究。 这项研究的总体目标是将基于基因组学的土壤微生物群落特征与重要生态系统碳转化的过程水平测量联系起来,并检查它们对环境变化的集体反应。 该研究项目包括在弗吉尼亚州帕蒙基/约克河系统(切萨皮克湾的主要支流)的潮汐淡水和寡盐沼泽中进行观测和操作实验。 该项目将对现有河流盐度梯度沿线的湿地进行评估,作为未来盐水入侵的空间替代,并通过原位盐水添加实验来表征微生物-植物-土壤耦合系统的变化。 土壤微生物群落的分子遗传分析(16S 测序、qPCR 和 RT-qPCR)、过程速率测量(铁和硫酸盐还原、产甲烷)以及生态系统二氧化碳和甲烷交换,可用于深入了解微生物群落的组成变化如何影响生物地球化学过程。这些基础知识将为未来的研究铺平道路,有效地将微生物群落纳入生态系统过程模型。

项目成果

期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)

数据更新时间:{{ journalArticles.updateTime }}

{{ 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 }}

Rima Franklin其他文献

Rima Franklin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('Rima Franklin', 18)}}的其他基金

Dissertation Research: Evaluating the functional significance of microbial community composition associated with nitrogen cycling in fresh and saltwater wetlands
论文研究:评估淡水和咸水湿地中与氮循环相关的微生物群落组成的功能意义
  • 批准号:
    1210357
  • 财政年份:
    2012
  • 资助金额:
    $ 78万
  • 项目类别:
    Standard Grant
RIG: Diversity and biogeography of microbial communities in submerged caves
RIG:水下洞穴中微生物群落的多样性和生物地理学
  • 批准号:
    0920398
  • 财政年份:
    2009
  • 资助金额:
    $ 78万
  • 项目类别:
    Standard Grant

相似国自然基金

发展/减排路径(SSPs/RCPs)下中国未来人口迁移与集聚时空演变及其影响
  • 批准号:
    19ZR1415200
  • 批准年份:
    2019
  • 资助金额:
    0.0 万元
  • 项目类别:
    省市级项目
美洲大蠊药材养殖及加工过程中化学成分动态变化与生物活性的相关性研究
  • 批准号:
    81060329
  • 批准年份:
    2010
  • 资助金额:
    26.0 万元
  • 项目类别:
    地区科学基金项目
用多重假设检验方法来研究方差变点问题
  • 批准号:
    10901010
  • 批准年份:
    2009
  • 资助金额:
    16.0 万元
  • 项目类别:
    青年科学基金项目

相似海外基金

Biocultural adaptation of resource management traditions under the effects of climate change
气候变化影响下资源管理传统的生物文化适应
  • 批准号:
    AH/Z000092/1
  • 财政年份:
    2024
  • 资助金额:
    $ 78万
  • 项目类别:
    Research Grant
Climate Change Effects on Pregnancy via a Traditional Food
气候变化通过传统食物对怀孕的影响
  • 批准号:
    10822202
  • 财政年份:
    2024
  • 资助金额:
    $ 78万
  • 项目类别:
Postdoctoral Fellowship: EAR-PF: Linking the past to the future: Using PETM fluvial records to understand the effects of climate change on rivers
博士后奖学金:EAR-PF:连接过去与未来:利用 PETM 河流记录了解气候变化对河流的影响
  • 批准号:
    2305463
  • 财政年份:
    2024
  • 资助金额:
    $ 78万
  • 项目类别:
    Fellowship Award
CAREER: Transformative Understanding of Rainfall-Triggered Landslides with Vegetation Effects from a Climate Change Perspective: Initiation and Consequences
职业:从气候变化的角度对降雨引发的山体滑坡及其植被影响进行变革性的理解:起因和后果
  • 批准号:
    2340657
  • 财政年份:
    2024
  • 资助金额:
    $ 78万
  • 项目类别:
    Standard Grant
Ovarian impacts of extreme heat and co-exposure to climate change-induced harmful algal bloom toxins (Admin Supplement to R01ES032144)
极端高温和共同暴露于气候变化引起的有害藻华毒素对卵巢的影响(R01ES032144 的管理补充)
  • 批准号:
    10838834
  • 财政年份:
    2023
  • 资助金额:
    $ 78万
  • 项目类别:
The hidden power of grammar: a mixed-methods study of media discourses on climate change protests and their effects on audience attitude.
语法的隐藏力量:气候变化抗议媒体话语及其对受众态度影响的混合方法研究。
  • 批准号:
    2881735
  • 财政年份:
    2023
  • 资助金额:
    $ 78万
  • 项目类别:
    Studentship
Effects of rapid Arctic climate change on jet streams and extreme weather (Ref 4606)
北极气候快速变化对急流和极端天气的影响(参考文献 4606)
  • 批准号:
    2859553
  • 财政年份:
    2023
  • 资助金额:
    $ 78万
  • 项目类别:
    Studentship
Drexel Climate Change and Urban Health Research Center (Drexel CCUH)
德雷塞尔气候变化与城市健康研究中心 (Drexel CCUH)
  • 批准号:
    10835432
  • 财政年份:
    2023
  • 资助金额:
    $ 78万
  • 项目类别:
Collaborative Research: ORCC: Carryover effects of multiple climate change stressors in oysters: mechanisms and consequences across stages of ontogeny
合作研究:ORCC:多种气候变化压力源对牡蛎的遗留影响:个体发育各阶段的机制和后果
  • 批准号:
    2345023
  • 财政年份:
    2023
  • 资助金额:
    $ 78万
  • 项目类别:
    Standard Grant
Climate change effects on the spread of wildfires: A mathematical approach
气候变化对野火蔓延的影响:数学方法
  • 批准号:
    2883580
  • 财政年份:
    2023
  • 资助金额:
    $ 78万
  • 项目类别:
    Studentship
{{ showInfoDetail.title }}

作者:{{ showInfoDetail.author }}

知道了