Collaborative Research: Higher order interactions, functional trait changes, and species coexistence in an annual plant community
合作研究:一年生植物群落中的高阶相互作用、功能性状变化和物种共存
基本信息
- 批准号:2022213
- 负责人:
- 金额:$ 54.09万
- 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 2024-08-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Natural communities are often composed of dozens or hundreds of interacting species. However, for simplicity, the study of species interactions in ecology most often focuses on interactions between pairs of species. Ecologists often then assume that our understanding of interactions between species pairs can be used to make sense of the dynamics of entire communities. This core assumption is challenged by the potential for Higher Order Interactions (HOIs), which occur when the interaction between a pair of species is changed by the presence of a third species. HOIs can either make it easier or more difficult for species to coexist in a diverse community, depending on the strength and the nature of the effects. The possible existence of these interactions therefore fundamentally challenges our understanding of how biodiversity is maintained in natural communities. However, we know very little about how strong or widespread HOIs might be in nature. The research will quantify the strength and prevalence of HOIs among plant species in a grassland community and test if certain physical or physiological characteristics of plant species make HOIs more likely to occur. The project will address a fundamental challenge in community ecology, train a graduate student and postdoctoral researcher, and be used to improve courses offered at the high school, undergraduate and graduate level. The research will combine large-scale field experiments, detailed measurements of plant functional traits, and the application of mathematical theory to ask three questions: (1) How strong are Higher Order Interactions (HOIs) among competitors in nature? (2) How do HOIs affect opportunities for species coexistence? (3) Can ecologists predict the magnitude of these interactions in nature with knowledge of plant functional traits? The project will quantify the magnitude of nearly 150 three-way HOIs through a large field experiment in a California annual plant community subjecting focal species to simultaneously varying densities of two different competitor species. Models with HOIs will then be fit to the demographic data collected. To address the coexistence consequences of the fitted HOIs, the invasion condition for coexistence and species persistence times will be evaluated in parameterized models that either include or exclude these HOI terms. To assess the predictability of HOIs, the research will measure how plant functional traits plastically respond to the densities of other competitors, and this information will be used to predict the value of the fitted HOIs. Taken together, the research will allow ecologists to both quantify the importance of HOIs for species coexistence and identify their functional basis, laying the groundwork for further mechanistic studies of these interactions.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.
自然群落通常由几十个或几百个相互作用的物种组成。然而,为了简单起见,生态学中物种相互作用的研究通常集中在物种对之间的相互作用上。生态学家通常认为,我们对物种之间相互作用的理解可以用来理解整个群落的动态。这一核心假设受到高阶相互作用(HOI)的挑战,高阶相互作用发生在一对物种之间的相互作用因第三物种的存在而改变时。HOI可以使物种更容易或更难在多样化的社区中共存,这取决于影响的强度和性质。因此,这些相互作用的可能存在从根本上挑战了我们对自然群落如何维持生物多样性的理解。然而,我们对自然界中HOI的强度或分布范围知之甚少。 该研究将量化草地群落中植物物种之间HOI的强度和流行程度,并测试植物物种的某些物理或生理特征是否更容易发生HOI。该项目将解决社区生态学中的一个基本挑战,培训一名研究生和博士后研究员,并用于改进高中、本科和研究生课程。 本研究将结合联合收割机大规模的田间试验、植物功能性状的详细测量和数学理论的应用,提出三个问题:(1)自然界中竞争者之间的高阶相互作用(HOI)有多强?(2)HOI如何影响物种共存的机会?(3)生态学家能用植物功能特性的知识来预测自然界中这些相互作用的大小吗?该项目将通过在加州一年生植物群落中进行的大型实地实验,对近150个三向HOI的大小进行量化,使焦点物种同时受到两种不同竞争物种的不同密度的影响。然后将具有HOI的模型拟合到收集的人口统计数据。为了解决拟合HOI的共存后果,将在包括或排除这些HOI项的参数化模型中评估共存和物种持续时间的入侵条件。为了评估HOI的可预测性,该研究将测量植物功能性状如何对其他竞争者的密度做出可塑性反应,这些信息将用于预测拟合HOI的值。总之,这项研究将使生态学家既量化HOI物种共存的重要性,并确定其功能基础,奠定了这些相互作用的进一步机制研究的基础。这个奖项反映了NSF的法定使命,并已被认为是值得通过使用基金会的智力价值和更广泛的影响审查标准进行评估的支持。
项目成果
期刊论文数量(5)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Competition for water and species coexistence in phenologically structured annual plant communities
- DOI:10.1111/ele.13990
- 发表时间:2022-03-17
- 期刊:
- 影响因子:8.8
- 作者:Levine, Jacob, I;Levine, Jonathan M.;Pacala, Stephen W.
- 通讯作者:Pacala, Stephen W.
Competition for pollinators destabilizes plant coexistence
- DOI:10.1038/s41586-022-04973-x
- 发表时间:2022-07-20
- 期刊:
- 影响因子:64.8
- 作者:Johnson, Christopher A.;Dutt, Proneet;Levine, Jonathan M.
- 通讯作者:Levine, Jonathan M.
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Jonathan Levine其他文献
Ecosystem tipping points in an evolving world
不断演变的世界中的生态系统临界点
- DOI:
10.1038/s41559-019-0797-2 - 发表时间:
2019-02-18 - 期刊:
- 影响因子:14.500
- 作者:
Vasilis Dakos;Blake Matthews;Andrew P. Hendry;Jonathan Levine;Nicolas Loeuille;Jon Norberg;Patrik Nosil;Marten Scheffer;Luc De Meester - 通讯作者:
Luc De Meester
Vision impairment in boys recruited to the iREAD study
- DOI:
10.1186/s13584-025-00667-7 - 发表时间:
2025-01-27 - 期刊:
- 影响因子:2.200
- 作者:
Jonathan Levine;Ravid Doron;Lisa A. Ostrin;Einat Shneor - 通讯作者:
Einat Shneor
A simplified calculation of power-broadened linewidths, with application to resonance ionization mass spectrometry
- DOI:
10.1016/j.sab.2012.02.001 - 发表时间:
2012-03-01 - 期刊:
- 影响因子:
- 作者:
Jonathan Levine - 通讯作者:
Jonathan Levine
Twelve month refractive and axial length changes in the Israeli refractive error, activity, and devices (iREAD) study
以色列屈光误差、活动和设备(iREAD)研究中的 12 个月屈光和眼轴长度变化
- DOI:
10.1038/s41598-025-97336-1 - 发表时间:
2025-04-14 - 期刊:
- 影响因子:3.900
- 作者:
Einat Shneor;Lisa A Ostrin;Ariela Gordon-Shaag;Jonathan Levine;Loraine T Sinnott;Lisa A Jones-Jordan;Kevin Davidson;Ravid Doron - 通讯作者:
Ravid Doron
Signaling Via Calcineurin and the Canonical Transient Receptor Protein-6 Channel (TRPC6) Requires Endoglin in Right Ventricle Pressure Overload
- DOI:
10.1016/j.cardfail.2013.06.051 - 发表时间:
2013-08-01 - 期刊:
- 影响因子:
- 作者:
Navin K. Kapur;Xiaoying Qiao;Vikram Paruchuri;Emily E. Mackey;Gerard Daly;Keshan Ughreja;Jonathan Levine;Mark J. Aronovitz;Hongwei Jin;Jonas B. Galper;Richard H. Karas - 通讯作者:
Richard H. Karas
Jonathan Levine的其他文献
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{{ truncateString('Jonathan Levine', 18)}}的其他基金
Doctoral Dissertation Research: Mechanisms of shrubification in a changing Arctic
博士论文研究:变化中的北极灌木化机制
- 批准号:
2311256 - 财政年份:2023
- 资助金额:
$ 54.09万 - 项目类别:
Standard Grant
DISSERTATION RESEARCH: Climate-mediated effects of pathogens on plant communities
论文研究:气候介导的病原体对植物群落的影响
- 批准号:
1210378 - 财政年份:2012
- 资助金额:
$ 54.09万 - 项目类别:
Standard Grant
Collaborative Research: Niche and Neutral Controls over the Coexistence of Serpentine Annual Plants
合作研究:对蛇纹一年生植物共存的生态位和中立控制
- 批准号:
0743365 - 财政年份:2008
- 资助金额:
$ 54.09万 - 项目类别:
Continuing Grant
International Research Fellowship Program: Search for Isotopes from Recent Nearby Supernova with Nearby Accelerator Mass
国际研究奖学金计划:利用附近加速器质量从最近附近的超新星中搜索同位素
- 批准号:
0502034 - 财政年份:2005
- 资助金额:
$ 54.09万 - 项目类别:
Fellowship Award
Environmental Variation, Dormancy, and Rare Plant Persistence in Invaded Habitats
入侵栖息地的环境变化、休眠和稀有植物的持久性
- 批准号:
0353608 - 财政年份:2003
- 资助金额:
$ 54.09万 - 项目类别:
Continuing Grant
Environmental Variation, Dormancy, and Rare Plant Persistence in Invaded Habitats
入侵栖息地的环境变化、休眠和稀有植物的持久性
- 批准号:
0236070 - 财政年份:2003
- 资助金额:
$ 54.09万 - 项目类别:
Continuing Grant
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