Collaborative Research: Engineering salt marsh restoration to maximize denitrification - elevation and species interactions

合作研究:工程盐沼恢复以最大限度地提高反硝化-海拔和物种相互作用

基本信息

  • 批准号:
    1643486
  • 负责人:
  • 金额:
    $ 9.23万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2016
  • 资助国家:
    美国
  • 起止时间:
    2016-05-02 至 2018-08-31
  • 项目状态:
    已结题

项目摘要

1438092 (Mortazavi) and 1438235 (Ortmann). Coastal wetlands represent a small fraction of all wetland areas, but are unique as they also host more than a significant fraction of the world's population. Coastal marsh ecosystems are dynamically linked to human dwellings and industry, and the impact humans have on these ecosystems can be considerable. This coupled human - marsh system has important implications, as the marshes provide desirable ecosystem services such as nutrient filtering, flood control, and carbon sequestration. Because of these services and the loss of marshes through urbanization, restoration of marshes has become an important tool in coastal management. Nitrogen (N) removal is an important service of marshes, which contributes to the sustainability of coastal ecosystems by mitigating eutrophication. Currently marshes are constructed with the assumption that denitrification will contribute significantly to N removal once vegetation is in place; however, studies suggest that only some of desirable ecosystem services are restored by such efforts. Specific information is missing from marsh restoration literature, which could be used to engineer marshes that are more effective at N removal. This research specifically addresses this issue.The primary objective of this research is to elucidate the impact of species identity and marsh elevation on the N removal capacity of restored marsh ecosystems to provide guidance in the engineering of sustainable marsh ecosystem which also maximize N removal. To achieve this objective the project addresses the following hypotheses: (i) rates of N removal in Juncus romerianus are higher than in Spartina alterniflora marshes (species effect), (ii) there exists an optimum marsh surface elevation where N removal is maximized (elevation effect), and (iii) at this optimal elevation, the marsh will be most resilient to increased nutrients (response to elevated N input). These hypotheses will be addressed in the field as well as with field-mesocosms in Alabama coastal marshes over a three-year period. This approach enables us to manipulate marsh surface elevation with respect to mean sea level to identify optimum conditions for N removal. Project results will be used to develop specific guidelines for marsh engineering projects to ensure N removal, an important ecosystem service, is maximized. Furthermore, a better understanding of the vegetation-elevation-microbial community interactions, providing fundamental knowledge about N cycling in coastal marshes, will be achieved. The synthesis of results from the research will provide the necessary data to inform restoration strategies, including sediment subsidy and species selection, to optimize N removal, and thus mitigate eutrophication, by engineered marshes. Coastal marshes provide important ecosystem services such as filtering sediments, moderating flooding and protecting inland developments from periodic storms, and provide nutrition and habitat for commercially important resources. The research is significant because it will help advance our understanding of a complex ecological system, and will help us refine efforts for maximizing an ecosystem service (i.e. N removal) provided by engineered marshes. The data collected during this project will be immediately applicable to coastal managers and groups carrying out marsh reconstruction projects. Results will disseminated to the local stakeholders including land managers, local government decision makers, and residents. To place the findings in a broader context, teaching material will be developed that can be used by the education and outreach (E&O) program of the Dauphin Island Sea Lab, known as the Discovery Hall Programs (DHP), one of the largest coastal science E&O programs in the northern Gulf of Mexico region.
1438092(莫尔塔扎维)和1438235(奥特曼)。沿海湿地只占所有湿地面积的一小部分,但却是独一无二的,因为它们也容纳了世界上相当一部分以上的人口。沿海沼泽生态系统与人类居住和工业动态联系在一起,人类对这些生态系统的影响可能是相当大的。这种耦合的人-沼泽系统具有重要的意义,因为沼泽提供了理想的生态系统服务,如营养过滤、防洪和碳封存。由于这些服务和城市化造成的沼泽损失,沼泽恢复已成为海岸管理的重要工具。氮(N)去除是沼泽的一项重要服务,它通过缓解富营养化来促进沿海生态系统的可持续性。目前建造沼泽的假设是,一旦植被就位,反硝化作用将显著促进氮的去除;然而,研究表明,这种努力只恢复了一些令人满意的生态系统服务。沼泽恢复文献中缺少特定的信息,这些信息可以用来设计更有效地去除氮的沼泽。本研究的主要目的是阐明物种特性和沼泽海拔对恢复湿地生态系统脱氮能力的影响,为可持续湿地生态系统的工程设计提供指导,同时最大化氮的去除。为了实现这一目标,该项目提出了以下假设:(I)罗梅里昂湿地的氮去除速率高于互花米草沼泽(物种效应),(Ii)存在一个最佳湿地表面高度,此时氮去除最大(海拔效应),以及(Iii)在这个最佳海拔高度,沼泽对增加的营养物质的适应能力最强(对增加的N输入做出反应)。这些假设将在实地以及阿拉巴马州沿海沼泽地的实地-中观系统中得到解决,为期三年。这种方法使我们能够相对于平均海平面来控制沼泽表面的高度,以确定去除氮的最佳条件。项目成果将用于制定沼泽工程项目的具体指导方针,以确保最大限度地消除氮这一重要的生态系统服务。此外,将更好地了解植被-海拔-微生物群落的相互作用,提供关于沿海沼泽氮循环的基本知识。研究结果的综合将提供必要的数据,以指导恢复战略,包括沉积物补贴和物种选择,以优化N的去除,从而减轻工程沼泽的富营养化。沿海沼泽提供重要的生态系统服务,如过滤沉积物、减缓洪水和保护内陆开发免受周期性风暴的影响,并为具有重要商业价值的资源提供营养和栖息地。这项研究具有重要意义,因为它将有助于我们加深对复杂生态系统的理解,并将帮助我们改进努力,使工程沼泽提供的生态系统服务(即,氮的去除)最大化。在本项目期间收集的数据将立即适用于开展沼泽重建项目的海岸管理人员和团体。结果将分发给当地利益相关者,包括土地管理者、当地政府决策者和居民。为了将这些发现放在更广泛的背景下,将开发可供Dauphin岛海洋实验室的教育和推广(E&O)计划使用的教材,该计划被称为探索大厅计划(DHP),是墨西哥湾北部地区最大的沿海科学E&O计划之一。

项目成果

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Olivia Mason其他文献

Characteristics and attitudes of first round invitees in the Irish National Colorectal Cancer Screening Programme
爱尔兰国家结直肠癌筛查计划第一轮受邀者的特征和态度
  • DOI:
  • 发表时间:
    2020
  • 期刊:
  • 影响因子:
    2.6
  • 作者:
    S. O'Reilly;K. Hughes;T. Mooney;P. Fitzpatrick;D. O'Donoghue;Sara McNally;M. Codd;E. Ryan;G. Doherty;Olivia Mason;H. Mulcahy;G. Cullen
  • 通讯作者:
    G. Cullen
(Post)colonial worlding in Jordan's nature reserves: Conservation, racial science, and national identity
约旦自然保护区中的后殖民世界化:保护、种族科学与民族认同
  • DOI:
    10.1016/j.jhg.2025.05.014
  • 发表时间:
    2025-06-01
  • 期刊:
  • 影响因子:
    1.100
  • 作者:
    Olivia Mason
  • 通讯作者:
    Olivia Mason
An open letter to the SJTG and the Royal Geographical Society (with IBG): The War on Gaza, the Royal Geographical Society (with IBG), and a Palestinian literary event
致 SJTG 和皇家地理学会(与 IBG)的公开信:加沙战争、皇家地理学会(与 IBG)和巴勒斯坦文学活动
  • DOI:
  • 发表时间:
    2024
  • 期刊:
  • 影响因子:
    2.2
  • 作者:
    Mark Griffiths;Sarah M. Hughes;Olivia Mason;Aya Nassar;Nicole Printy Currie
  • 通讯作者:
    Nicole Printy Currie
A Microbial Observatory of Caterpillars: Isolation and Molecular Characterization of Protists Associated with the Saturniid Moth Caterpillar Rothschildia lebeau 1,2
毛虫微生物观测站:土星蛾毛毛虫 Rothschildia lebeau 1,2 相关原生生物的分离和分子表征
  • DOI:
  • 发表时间:
    2005
  • 期刊:
  • 影响因子:
    2.2
  • 作者:
    L. A. Amaral Zettler;Abby D. Laatsch;E. Zettler;T. Nerad;J. Cole;F. C. Diaz;Joel Díaz;D. Janzen;A. Sittenfeld;Olivia Mason;A. Reysenbach
  • 通讯作者:
    A. Reysenbach
Venous thromboembolism incidence in the Ireland east hospital group: a retrospective 22-month observational study
爱尔兰东部医院组的静脉血栓栓塞发生率:一项为期 22 个月的回顾性观察研究
  • DOI:
    10.1136/bmjopen-2019-030059
  • 发表时间:
    2019
  • 期刊:
  • 影响因子:
    2.9
  • 作者:
    B. Kevane;M. Day;Noirin Bannon;L. Lawler;T. Breslin;C. Andrews;H. Johnson;M. Fitzpatrick;K. Murphy;Olivia Mason;Annemarie O’Neill;F. Donohue;F. Ní Áinle
  • 通讯作者:
    F. Ní Áinle

Olivia Mason的其他文献

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{{ truncateString('Olivia Mason', 18)}}的其他基金

Collaborative Research: Multi-isotope and microbial ecology approaches to investigate sedimentary nitrous oxide production and consumption in the northern Benguela upwelling system
合作研究:采用多同位素和微生物生态学方法研究本格拉北部上升流系统沉积一氧化二氮的产生和消耗
  • 批准号:
    2342607
  • 财政年份:
    2024
  • 资助金额:
    $ 9.23万
  • 项目类别:
    Standard Grant
A cultural politics of nature reserves: resource tensions, state-formation, and indigenous Bedouin
自然保护区的文化政治:资源紧张、国家形成和土著贝都因人
  • 批准号:
    ES/W003376/2
  • 财政年份:
    2023
  • 资助金额:
    $ 9.23万
  • 项目类别:
    Research Grant
A cultural politics of nature reserves: resource tensions, state-formation, and indigenous Bedouin
自然保护区的文化政治:资源紧张、国家形成和土著贝都因人
  • 批准号:
    ES/W003376/1
  • 财政年份:
    2022
  • 资助金额:
    $ 9.23万
  • 项目类别:
    Research Grant
Collaborative Research: Quantifying nitrous oxide sources across an oxygen gradient in the northern Benguela upwelling system
合作研究:量化本格拉北部上升流系统氧气梯度中的一氧化二氮来源
  • 批准号:
    2113936
  • 财政年份:
    2021
  • 资助金额:
    $ 9.23万
  • 项目类别:
    Standard Grant
Walking on the Jordan Trail: A cultural politics of Jordan
行走在约旦小道上:约旦的文化政治
  • 批准号:
    ES/V01157X/1
  • 财政年份:
    2020
  • 资助金额:
    $ 9.23万
  • 项目类别:
    Fellowship
Collaborative Research: Engineering salt marsh restoration to maximize denitrification - elevation and species interactions
合作研究:工程盐沼恢复以最大限度地提高反硝化-海拔和物种相互作用
  • 批准号:
    1546763
  • 财政年份:
    2015
  • 资助金额:
    $ 9.23万
  • 项目类别:
    Standard Grant

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