Plant-soil feedback and species coexistence: interactions among soil pathogens, irradiance, and species life histories

植物-土壤反馈和物种共存:土壤病原体、辐照度和物种生活史之间的相互作用

基本信息

  • 批准号:
    1457323
  • 负责人:
  • 金额:
    $ 49.31万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    2015
  • 资助国家:
    美国
  • 起止时间:
    2015-06-15 至 2020-02-29
  • 项目状态:
    已结题

项目摘要

Ecologists have long been puzzled about how so many tree species can coexist within a given forest. The main goal of the project is to link two seemingly unrelated and competing mechanisms that have been proposed for tree species coexistence. These are how tree species respond to light availability and to increasing density or proximity of other individuals of the same species. Tree seedling response to soil fungi may hold the key to tree seedling response to light availability and densities of other individuals of the same species. Seedling mortality to soil pathogens associated with their own species is likely enhanced in low light environments for many species, and much more prevalent in species considered 'shade intolerant'. In addition, these biotic plant-soil feedbacks may play a large role in heightening differences among species in their responses to light. This research may help to better define shade tolerance and explain tree species coexistence; both results are vital for effective conservation and management of temperate forests. For instance, results may have implications for forest restoration or the timber industry with regards to tree species with specific light requirements or regeneration difficulties. Additionally, this project will educate, train and mentor undergraduate students in plant and soil microbial ecology as well as provide public outreach to local K-12 teachers and students. The primary goal of the project is to investigate biotic plant-soil feedbacks that can affect distance- and density-dependent seedling survival and growth across light gradients and among tree species with varying life-history traits. The researchers will employ a novel field-based transplant experiment using fungal exclusion pots, which will investigate the mechanisms of tree seedling response to: 1) feedbacks between plants and the soil microbial community as a function of light availability, and 2) response to low light as a function of these feedbacks for eight temperate tree species that vary in seedling shade tolerance, local adult abundance and association with arbuscular and ectomycorrhizal fungi. Thus, this research will investigate the degree to which plant-soil feedbacks contribute to species coexistence through not only negative-density dependent processes, but also as a driver of species light gradient partitioning. The project will also investigate which factors (e.g., soil pathogen density and composition, and/or seedling traits) contribute to greater negative effects from disease and plant-soil feedback in low light.
长期以来,生态学家一直对这么多树种如何在一片森林中共存感到困惑。该项目的主要目标是将两个看似无关且相互竞争的机制联系起来,这两个机制已被提议用于树种共存。这些是树种如何应对光照的可用性和增加密度或同一物种的其他个体的接近度。 林木幼苗对土壤真菌的反应可能是林木幼苗对光照和同种其他个体密度反应的关键。幼苗死亡率与自己的物种土壤病原体可能会提高在低光环境中的许多物种,更普遍的物种被认为是“不耐荫”。此外,这些生物植物-土壤反馈可能在提高物种对光反应的差异方面发挥重要作用。这项研究可能有助于更好地定义耐荫性和解释树种共存;这两个结果对于有效保护和管理温带森林至关重要。例如,结果可能对森林恢复或木材工业有影响,涉及具有特定光照要求或再生困难的树种。 此外,该项目将教育,培训和指导植物和土壤微生物生态学的本科生,并为当地K-12教师和学生提供公共宣传。该项目的主要目标是调查生物植物-土壤反馈,这种反馈可以影响不同光照梯度和不同生活史特征的树种之间依赖距离和密度的幼苗存活和生长。研究人员将采用一种新的基于田间的移植实验,使用真菌排除盆,该实验将研究树苗对以下因素的反应机制:1)植物和土壤微生物群落之间的反馈作为光可用性的函数,以及2)对低光的响应作为这些反馈的函数,用于幼苗耐荫性不同的8个温带树种,当地的成年丰度和关联与丛枝和外生菌根真菌。因此,本研究将调查植物-土壤反馈不仅通过负密度依赖过程,而且还作为物种光梯度分区的驱动程序,有助于物种共存的程度。该项目还将调查哪些因素(例如,土壤病原体密度和组成,和/或幼苗性状)在低光下促成来自疾病和植物-土壤反馈的更大的负面影响。

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 }}

Sarah McCarthy-Neumann其他文献

Sarah McCarthy-Neumann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 }}

相似国自然基金

碳-铁-微生物对滩涂围垦稻田土壤团聚体形成和稳定的调控机制
  • 批准号:
    41977088
  • 批准年份:
    2019
  • 资助金额:
    61.0 万元
  • 项目类别:
    面上项目
黄淮海平原典型区域土壤盐渍化演变机制与发生风险防控对策研究
  • 批准号:
    41171178
  • 批准年份:
    2011
  • 资助金额:
    65.0 万元
  • 项目类别:
    面上项目
长白山垂直带土壤动物多样性及其在凋落物分解和元素释放中的贡献
  • 批准号:
    41171207
  • 批准年份:
    2011
  • 资助金额:
    85.0 万元
  • 项目类别:
    面上项目
南美蟛蜞菊入侵对土壤微生物的影响及反馈作用
  • 批准号:
    30970556
  • 批准年份:
    2009
  • 资助金额:
    40.0 万元
  • 项目类别:
    面上项目
松嫩草地土壤动物多样性及其在凋落物分解中作用和物质能量收支研究
  • 批准号:
    40871120
  • 批准年份:
    2008
  • 资助金额:
    45.0 万元
  • 项目类别:
    面上项目
环境中溴代二噁英类物质污染状况及其特征
  • 批准号:
    20677001
  • 批准年份:
    2006
  • 资助金额:
    28.0 万元
  • 项目类别:
    面上项目
基于GIS的西北干旱区黑河流域水文水资源集成建模环境研究
  • 批准号:
    40501054
  • 批准年份:
    2005
  • 资助金额:
    27.0 万元
  • 项目类别:
    青年科学基金项目
典型POPs的土壤污染机理与作物累积规律
  • 批准号:
    40571075
  • 批准年份:
    2005
  • 资助金额:
    45.0 万元
  • 项目类别:
    面上项目

相似海外基金

Mechanisms of plant-soil feedback based on plant-root fungal community interactions
基于植物-根部真菌群落相互作用的植物-土壤反馈机制
  • 批准号:
    23KJ1380
  • 财政年份:
    2023
  • 资助金额:
    $ 49.31万
  • 项目类别:
    Grant-in-Aid for JSPS Fellows
Functional ecology of alternate states of black spruce-Kalmia communities: species traits, niche differentiation and plant-soil feedback
黑云杉-Kalmia群落交替状态的功能生态学:物种特征、生态位分化和植物-土壤反馈
  • 批准号:
    DDG-2020-00024
  • 财政年份:
    2022
  • 资助金额:
    $ 49.31万
  • 项目类别:
    Discovery Development Grant
Functional ecology of alternate states of black spruce-Kalmia communities: species traits, niche differentiation and plant-soil feedback
黑云杉-Kalmia群落交替状态的功能生态学:物种特征、生态位分化和植物-土壤反馈
  • 批准号:
    DDG-2020-00024
  • 财政年份:
    2021
  • 资助金额:
    $ 49.31万
  • 项目类别:
    Discovery Development Grant
Functional ecology of alternate states of black spruce-Kalmia communities: species traits, niche differentiation and plant-soil feedback
黑云杉-Kalmia群落交替状态的功能生态学:物种特征、生态位分化和植物-土壤反馈
  • 批准号:
    DDG-2020-00024
  • 财政年份:
    2020
  • 资助金额:
    $ 49.31万
  • 项目类别:
    Discovery Development Grant
The role of drought on plant-soil feedback
干旱对植物-土壤反馈的作用
  • 批准号:
    541044-2019
  • 财政年份:
    2019
  • 资助金额:
    $ 49.31万
  • 项目类别:
    University Undergraduate Student Research Awards
Quantifying plant-soil feedback effects in classic diversity-productivity experiments
量化经典多样性生产力实验中的植物-土壤反馈效应
  • 批准号:
    1354129
  • 财政年份:
    2014
  • 资助金额:
    $ 49.31万
  • 项目类别:
    Continuing Grant
The role of plant-soil feedback in biodiversity maintenance along fertility gradients: from patterns to mechanisms
植物-土壤反馈在沿肥力梯度维持生物多样性中的作用:从模式到机制
  • 批准号:
    DP130100016
  • 财政年份:
    2013
  • 资助金额:
    $ 49.31万
  • 项目类别:
    Discovery Projects
Dissertation Research: Plant-soil feedback and invasive stiltgrass: Studying the black box of the feedback loop
论文研究:植物-土壤反馈和入侵高跷:研究反馈回路的黑匣子
  • 批准号:
    1209892
  • 财政年份:
    2012
  • 资助金额:
    $ 49.31万
  • 项目类别:
    Standard Grant
Plant-Soil Feedback / Microbial Ecology: disentangling negative and positive soil feedback effects
植物-土壤反馈/微生物生态学:解开负反馈和正土壤反馈效应
  • 批准号:
    172102561
  • 财政年份:
    2010
  • 资助金额:
    $ 49.31万
  • 项目类别:
    Research Units
Plant - soil fauna interactions: soil feedback mechanisms in grassland of different diversity
植物-土壤动物相互作用:不同多样性草地的土壤反馈机制
  • 批准号:
    172023813
  • 财政年份:
    2010
  • 资助金额:
    $ 49.31万
  • 项目类别:
    Research Units
{{ showInfoDetail.title }}

作者:{{ showInfoDetail.author }}

知道了