Post-fire habitat conditions as drivers of progressive and retrogressive succession: seedbed filter, species traits and feedback of dominant plants

火后栖息地条件作为进步和倒退演替的驱动因素:苗床过滤、物种特征和优势植物的反馈

基本信息

  • 批准号:
    RGPIN-2014-06239
  • 负责人:
  • 金额:
    $ 1.75万
  • 依托单位:
  • 依托单位国家:
    加拿大
  • 项目类别:
    Discovery Grants Program - Individual
  • 财政年份:
    2015
  • 资助国家:
    加拿大
  • 起止时间:
    2015-01-01 至 2016-12-31
  • 项目状态:
    已结题

项目摘要

Discovering the drivers of post-disturbance community assembly and succession has been a long-term preoccupation amongst ecologists. A reliable prediction of successional trajectory is essential for developing ecological theory and strategy for natural resource management. It is generally believed that wildfires in the boreal forest reset succession culminating to pre-fire stand structure. In this progressive succession competitive exclusion is thought to be the main driver. But important exceptions occur in post-fire boreal and temperate conifer forests with ericaceous understory where low-severity fires often lead to retrogressive succession. Here the competition based assembly rule is pre-empted by habitat conditions characterized by thick residual organic matter (ROM). My previous work on such a system dominated by black spruce (Picea mariaia) and Kalmia (Kalmia angustifolia) showed that thick ROM forms poor seedbeds for spruce but protects the belowground buds of Kalmia that emerge quickly and dominate the post-fire community and resist tree colonization. Not enough is known about the duration and dynamics of this ericaceous heath: some suggest it lasts for several years to several decades while others suggest alternate stable states with little data on community dynamics and plant soil-feedbacks. This knowledge is essential to understand the mechanism of retrogressive succession and for sustainable forest management in many nutrient-poor conifer-ericaceous communities on both sides of the Atlantic. The long-term goal of my research program is to understand disturbance mediated community dynamics particularly the interactions between the dominant understory and canopy species. Using black spruce-Kalmia community as a study system and framing my research questions around several contemporary broad ecological concepts and land management challenges, in the next five years I shall focus on four short-term objectives, to 1. examine the biophysical properties of post-fire residual organic matter (ROM) and how that filter species regeneration traits, 2. test how successional direction and ecosystem function can be described by community level trait analysis, 3. assess the longevity and growth phases of Kalmia heaths, and 4. discover innovative methods of conifer restoration in ericaceous heaths. This research will i) advance our fundamental knowledge on habitat driven community assembly and secondary succession, ii) test the stability of arrested succession or alternate stable states mediated by population dynamics of dominant plants, community trait filtering and plant soil feedbacks, and iii) evaluate biotic resistance in relation to restoration ecology. Focusing on several contemporary ecological concepts pertaining to causes and consequences of heath formation this research will discover the significance of fire severity related seedbed filter and priority effect on the direction of secondary succession. The novelty of the proposed approach of this study is to determine functional trait diversity along successional trajectories as opposed to the traditional calculation of taxonomic species diversity and composition change along time since disturbance. I shall also use intra-species trait variability of dominant plants by onsite measurement of hard traits. By combining community level functional traits with dominant plants' response and effect traits this approach will enable me to offer functional interpretation of Kalmia heath and forest dynamics. This new knowledge on dynamics and longevity of Kalmia heath can be used in devising innovative methods of forest restoration in Kalmia heath, which has significant land management implications for eastern Canada. This research will train 1 PhD, 3 MSc and 5 HBSc students.
发现扰动后群落组装和演替的驱动因素一直是生态学家长期关注的问题。可靠的演替轨迹预测是发展生态学理论和自然资源管理战略的必要条件。人们普遍认为,野火在北方森林重置演替达到高潮,火灾前的立场结构。在这种渐进式的继承中,竞争性排斥被认为是主要的驱动力。但重要的例外发生在火灾后的北方和温带针叶林与杜鹃花科林下,低严重火灾往往导致退化演替。在这里,基于竞争的聚集规则被以厚厚的残留有机物(ROM)为特征的栖息地条件所取代。我以前的工作,这样一个系统占主导地位的黑云杉(Picea mariaia)和Kalmia(Kalmia angustifolia)表明,厚厚的ROM形成贫穷的苗床云杉,但保护地下芽Kalmia迅速出现,并主导火灾后的社区和抵制树殖民。对这种杜鹃花石楠的持续时间和动态知之甚少:有些人认为它会持续几年到几十年,而另一些人则认为交替的稳定状态与群落动态和植物土壤反馈的数据很少。这方面的知识是必不可少的,以了解退化演替的机制和可持续森林管理在许多营养不良的针叶树,杜鹃花群落在大西洋两岸。我的研究计划的长期目标是了解干扰介导的群落动态,特别是优势林下和冠层物种之间的相互作用。 使用黑云杉-Kalmia社区作为一个研究系统,并围绕几个当代广泛的生态概念和土地管理的挑战,在未来五年内,我的研究问题将集中在四个短期目标,1。研究火灾后残留有机物(ROM)的生物物理特性,以及如何过滤物种再生性状,2。检验群落水平性状分析如何描述演替方向和生态系统功能; 3.评估Kalmia石南的寿命和生长阶段,以及4.在杜鹃花石南中发现针叶树恢复的创新方法。本研究将i)推进我们的基础知识,生境驱动的群落组装和次生演替,ii)测试的稳定性逮捕演替或交替稳定状态介导的优势植物的种群动态,群落性状过滤和植物土壤反馈,和iii)评估生物抗性与恢复生态学。本研究将聚焦于与健康形成的原因和后果有关的几个当代生态学概念,发现与火灾严重程度相关的苗床过滤器和次生演替方向的优先效应的重要性。 本研究所提出的方法的新奇是确定功能性状多样性沿着演替轨迹,而不是传统的计算分类物种多样性和组成变化沿着时间,因为干扰。我还将通过现场测量硬性状来利用优势植物的种内性状变异性。通过将群落水平的功能性状与优势植物的响应和效应性状相结合,这种方法将使我能够提供功能解释Kalmia健康和森林动态。 这种新的知识的动态和寿命的Kalmia石楠,可用于设计创新的方法,森林恢复在Kalmia石楠,这对加拿大东部的土地管理具有重要意义。 本研究将培养1名博士,3名硕士和5名HBSc学生。

项目成果

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Mallik, Azim其他文献

Intraspecific trait variation as a mechanism of coexistence of congeneric blueberry (Vaccinium) species after forest harvesting
  • DOI:
    10.1016/j.foreco.2023.121205
  • 发表时间:
    2023-08-14
  • 期刊:
  • 影响因子:
    3.7
  • 作者:
    St Martin, Philippe;Mallik, Azim
  • 通讯作者:
    Mallik, Azim
Control of Panama Disease of Banana by Rotating and Intercropping with Chinese Chive (Allium Tuberosum Rottler): Role of Plant Volatiles
与韭菜轮作和间作防治香蕉巴拿马病:植物挥发物的作用
  • DOI:
    10.1007/s10886-013-0243-x
  • 发表时间:
    2013-02-01
  • 期刊:
  • 影响因子:
    2.3
  • 作者:
    Zhang, Hui;Mallik, Azim;Zeng, Ren Sen
  • 通讯作者:
    Zeng, Ren Sen

Mallik, Azim的其他文献

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{{ truncateString('Mallik, Azim', 18)}}的其他基金

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:
    $ 1.75万
  • 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:
    $ 1.75万
  • 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:
    $ 1.75万
  • 项目类别:
    Discovery Development Grant
Post-fire habitat conditions as drivers of progressive and retrogressive succession: seedbed filter, species traits and feedback of dominant plants
火后栖息地条件作为进步和倒退演替的驱动因素:苗床过滤、物种特征和优势植物的反馈
  • 批准号:
    RGPIN-2014-06239
  • 财政年份:
    2019
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Grants Program - Individual
GIS model for riparian forest management in Ontario emulating post-fire residual forest patterns**
安大略省河岸森林管理 GIS 模型模拟火灾后残留森林模式**
  • 批准号:
    536369-2018
  • 财政年份:
    2018
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Engage Grants Program
Post-fire habitat conditions as drivers of progressive and retrogressive succession: seedbed filter, species traits and feedback of dominant plants
火后栖息地条件作为进步和倒退演替的驱动因素:苗床过滤、物种特征和优势植物的反馈
  • 批准号:
    RGPIN-2014-06239
  • 财政年份:
    2017
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Grants Program - Individual
Post-fire habitat conditions as drivers of progressive and retrogressive succession: seedbed filter, species traits and feedback of dominant plants
火后栖息地条件作为进步和倒退演替的驱动因素:苗床过滤、物种特征和优势植物的反馈
  • 批准号:
    RGPIN-2014-06239
  • 财政年份:
    2016
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Grants Program - Individual
Post-fire habitat conditions as drivers of progressive and retrogressive succession: seedbed filter, species traits and feedback of dominant plants
火后栖息地条件作为进步和倒退演替的驱动因素:苗床过滤、物种特征和优势植物的反馈
  • 批准号:
    RGPIN-2014-06239
  • 财政年份:
    2014
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Grants Program - Individual
Habitat filter, priority efect and ecological engineering (feedbacks) of dominant species in post-fire succession
火后演替中优势种的栖息地过滤、优先效应和生态工程(反馈)
  • 批准号:
    46483-2009
  • 财政年份:
    2013
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Grants Program - Individual
Productivity-biodiversity tradeoff analysis of boreal mixedwood forests developing from a range of silvicultural intensity treatments
通过一系列造林强度处理发展的北方混交林的生产力与生物多样性权衡分析
  • 批准号:
    450418-2013
  • 财政年份:
    2013
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Engage Grants Program

相似海外基金

Post-fire habitat conditions as drivers of progressive and retrogressive succession: seedbed filter, species traits and feedback of dominant plants
火后栖息地条件作为进步和倒退演替的驱动因素:苗床过滤、物种特征和优势植物的反馈
  • 批准号:
    RGPIN-2014-06239
  • 财政年份:
    2019
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Grants Program - Individual
Post-fire habitat conditions as drivers of progressive and retrogressive succession: seedbed filter, species traits and feedback of dominant plants
火后栖息地条件作为进步和倒退演替的驱动因素:苗床过滤、物种特征和优势植物的反馈
  • 批准号:
    RGPIN-2014-06239
  • 财政年份:
    2017
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Grants Program - Individual
Post-fire habitat conditions as drivers of progressive and retrogressive succession: seedbed filter, species traits and feedback of dominant plants
火后栖息地条件作为进步和倒退演替的驱动因素:苗床过滤、物种特征和优势植物的反馈
  • 批准号:
    RGPIN-2014-06239
  • 财政年份:
    2016
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Grants Program - Individual
Post-fire habitat conditions as drivers of progressive and retrogressive succession: seedbed filter, species traits and feedback of dominant plants
火后栖息地条件作为进步和倒退演替的驱动因素:苗床过滤、物种特征和优势植物的反馈
  • 批准号:
    RGPIN-2014-06239
  • 财政年份:
    2014
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Grants Program - Individual
Habitat filter, priority efect and ecological engineering (feedbacks) of dominant species in post-fire succession
火后演替中优势种的栖息地过滤、优先效应和生态工程(反馈)
  • 批准号:
    46483-2009
  • 财政年份:
    2013
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Grants Program - Individual
Habitat filter, priority efect and ecological engineering (feedbacks) of dominant species in post-fire succession
火后演替中优势种的栖息地过滤、优先效应和生态工程(反馈)
  • 批准号:
    46483-2009
  • 财政年份:
    2012
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Grants Program - Individual
Habitat filter, priority efect and ecological engineering (feedbacks) of dominant species in post-fire succession
火后演替中优势种的栖息地过滤、优先效应和生态工程(反馈)
  • 批准号:
    46483-2009
  • 财政年份:
    2011
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Grants Program - Individual
Habitat filter, priority efect and ecological engineering (feedbacks) of dominant species in post-fire succession
火后演替中优势种的栖息地过滤、优先效应和生态工程(反馈)
  • 批准号:
    46483-2009
  • 财政年份:
    2010
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Grants Program - Individual
Habitat filter, priority efect and ecological engineering (feedbacks) of dominant species in post-fire succession
火后演替中优势种的栖息地过滤、优先效应和生态工程(反馈)
  • 批准号:
    46483-2009
  • 财政年份:
    2009
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Grants Program - Individual
Boreal forest songbird communities in post-harvest monocultures and post-fire habitats: investigating effects of habitat simplification
收获后单一栽培和火灾后栖息地中的北方森林鸣禽群落:调查栖息地简化的影响
  • 批准号:
    331820-2007
  • 财政年份:
    2007
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Postgraduate Scholarships - Master's
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