Recovery Across a Gradient of Disturbance Novelties: Patterns and Drivers of Understory Plant Community Dynamics in Northern Lodgepole Pine Forests

跨干扰梯度的恢复新奇:北部黑松林林下植物群落动态的模式和驱动因素

基本信息

  • 批准号:
    RGPIN-2021-02781
  • 负责人:
  • 金额:
    $ 2.4万
  • 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:
    2021
  • 资助国家:
    加拿大
  • 起止时间:
    2021-01-01 至 2022-12-31
  • 项目状态:
    已结题

项目摘要

Millions of hectares of Canada's northern forests are impacted each year by both natural and anthropogenic disturbance agents. Novel disturbances are pushing northern forests beyond their historical natural ranges of variability; these forests are experiencing unprecedented types and severities of disturbance. The changes in disturbance regimes are in turn are leading to changes in forest structure, function, and long-term successional trajectories, with unknown ecological consequences. The relative impacts of these disturbances on the forest canopy, understory plant community, and below-ground properties will play an important role in determining succession, biodiversity and conservation of these forests. Given that understory plant communities are integral to the ecological functioning and biodiversity of forests, gaining an understanding of impacts of disturbance on these plant communities and their linkages with other ecosystem properties and processes will help us to better understand the complex responses that forests may have to shifting disturbance regimes. Lodgepole pine (Pinus contorta) forests provide natural laboratories for assessing the effects of varying novelties of disturbance on understory plant communities. In western Canada, climate change has contributed to an unprecedented mountain pine beetle (MPB) outbreak, and the impacts of ongoing range expansion of MPB into new habitats on understory plant communities remain unknown. MPB selectively kills larger and older trees, leaving the understory intact, whereas salvage harvest of attacked trees has immediate direct effects on the understory. Direct effects are even more dramatic in logged areas that are subsequently used for oil and gas extraction, and then reclaimed to new forest. When pine trees are introduced to other regions of the world, they may themselves be considered as the primary disturbance agent. My research program focuses on understanding both how and why understory plant community responses differ among these disturbances compared with historical disturbance agents (stand-replacing fire). My proposed research examines plant community structural and functional responses of a single forest ecosystem type, lodgepole pine, across a gradient of novelties of disturbance types. My research activities will set the stage for development of a framework that will allow us to better predict: i) long-term impacts of varied disturbances on plant biodiversity and function, and ii) the successional trajectories of pine forests under changing disturbance regimes. Further, it will provide the empirical basis to inform conservation and restoration practices in northern forests, including advancing development of a provincial long-term monitoring program to assess ecological recovery of reclaimed forests in Alberta. It simultaneously provides transformative research experience and training for 11 next generation UG, MSc, PhD and PDF scientists in an inclusive brave space.
加拿大北方数百万公顷的森林每年受到自然和人为干扰因素的影响。新的干扰正在推动北方森林超出其历史自然变化范围;这些森林正在经历前所未有的干扰类型和严重程度。干扰机制的变化反过来又导致森林结构、功能和长期演替轨迹的变化,并产生未知的生态后果。这些干扰对森林冠层、林下植物群落和地下特性的相对影响将在确定这些森林的演替、生物多样性和养护方面发挥重要作用。鉴于林下植物群落是森林生态功能和生物多样性不可或缺的组成部分,了解干扰对这些植物群落的影响及其与其他生态系统特性和过程的联系将有助于我们更好地了解森林对不断变化的干扰制度可能作出的复杂反应。小杆松(Pinus contorta)林提供了天然实验室,以评估不同的新奇的干扰对林下植物群落的影响。在加拿大西部,气候变化导致了前所未有的山地松甲虫(MPB)爆发,MPB的持续范围扩展到新的栖息地对林下植物群落的影响仍然未知。MPB选择性地杀死较大和较老的树木,留下林下植物完好无损,而抢救收获的攻击树木立即直接影响林下植物。直接影响在伐木区更为显著,这些地区随后被用于石油和天然气开采,然后被开垦成新的森林。当松树被引入世界其他地区时,它们本身可能被认为是主要的干扰因素。我的研究计划的重点是了解如何以及为什么林下植物群落的反应不同,这些干扰相比,历史干扰剂(站取代火)。我建议的研究探讨植物群落的结构和功能的单一森林生态系统类型,黑松,跨越梯度的新奇的干扰类型的反应。我的研究活动将为开发一个框架奠定基础,该框架将使我们能够更好地预测:i)各种干扰对植物生物多样性和功能的长期影响,以及ii)在不断变化的干扰制度下松树林的演替轨迹。此外,它还将提供经验基础,为北方森林的保护和恢复做法提供信息,包括推进省级长期监测方案的制定,以评估阿尔伯塔再生森林的生态恢复。它同时为11位下一代UG,MSc,PhD和PDF科学家提供变革性的研究经验和培训。

项目成果

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McIntosh, Anne其他文献

A patient-centered approach to understanding long-term psychosocial adjustment and meaning-making, 15 to 20 years after epilepsy surgery
  • DOI:
    10.1016/j.yebeh.2019.106656
  • 发表时间:
    2020-01-01
  • 期刊:
  • 影响因子:
    2.6
  • 作者:
    Coleman, Honor;McIntosh, Anne;Wilson, Sarah J.
  • 通讯作者:
    Wilson, Sarah J.
Identifying the trajectory of social milestones 15-20 years after epilepsy surgery: Realistic timelines for postsurgical expectations
  • DOI:
    10.1002/epi4.12341
  • 发表时间:
    2019-09-01
  • 期刊:
  • 影响因子:
    3
  • 作者:
    Coleman, Honor;McIntosh, Anne;Wilson, Sarah J.
  • 通讯作者:
    Wilson, Sarah J.
A proteomic analysis of arsenical drug resistance in Trypanosoma brucei
  • DOI:
    10.1002/pmic.200500419
  • 发表时间:
    2006-05-01
  • 期刊:
  • 影响因子:
    3.4
  • 作者:
    Foucher, Aude L.;McIntosh, Anne;Turner, C. Michael R.
  • 通讯作者:
    Turner, C. Michael R.

McIntosh, Anne的其他文献

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{{ truncateString('McIntosh, Anne', 18)}}的其他基金

Recovery Across a Gradient of Disturbance Novelties: Patterns and Drivers of Understory Plant Community Dynamics in Northern Lodgepole Pine Forests
跨干扰梯度的恢复新奇:北部黑松林林下植物群落动态的模式和驱动因素
  • 批准号:
    RGPIN-2021-02781
  • 财政年份:
    2022
  • 资助金额:
    $ 2.4万
  • 项目类别:
    Discovery Grants Program - Individual
Recovery Across a Gradient of Disturbance Novelties: Patterns and Drivers of Understory Plant Community Dynamics in Northern Lodgepole Pine Forests
跨干扰梯度的恢复新奇:北部黑松林林下植物群落动态的模式和驱动因素
  • 批准号:
    DGECR-2021-00082
  • 财政年份:
    2021
  • 资助金额:
    $ 2.4万
  • 项目类别:
    Discovery Launch Supplement
Comparison of below-ground dynamics among native pine forests of Alberta and Sweden and exotic pine plantations in Sweden
艾伯塔省和瑞典本土松林与瑞典外来松人工林的地下动态比较
  • 批准号:
    401434-2010
  • 财政年份:
    2010
  • 资助金额:
    $ 2.4万
  • 项目类别:
    Canadian Graduate Scholarships Foreign Study Supplements
Comparison of canopy structure and function between boreal mixed conifer and douglas-fir/western hemlock forest chronosequences
北方混交针叶林与花旗松/西部铁杉林冠层结构和功能的比较
  • 批准号:
    344177-2007
  • 财政年份:
    2009
  • 资助金额:
    $ 2.4万
  • 项目类别:
    Alexander Graham Bell Canada Graduate Scholarships - Doctoral
Comparison of canopy structure and function between boreal mixed conifer and douglas-fir/western hemlock forest chronosequences
北方混交针叶林与花旗松/西部铁杉林冠层结构和功能的比较
  • 批准号:
    344177-2007
  • 财政年份:
    2008
  • 资助金额:
    $ 2.4万
  • 项目类别:
    Alexander Graham Bell Canada Graduate Scholarships - Doctoral
Comparison of canopy structure and function between boreal mixed conifer and douglas-fir/western hemlock forest chronosequences
北方混交针叶林与花旗松/西部铁杉林冠层结构和功能的比较
  • 批准号:
    344177-2007
  • 财政年份:
    2007
  • 资助金额:
    $ 2.4万
  • 项目类别:
    Alexander Graham Bell Canada Graduate Scholarships - Doctoral

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Recovery Across a Gradient of Disturbance Novelties: Patterns and Drivers of Understory Plant Community Dynamics in Northern Lodgepole Pine Forests
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