Investigating the effects of invading earthworms on soil properties and seedling growth in forest ecosystems.

研究入侵蚯蚓对森林生态系统土壤性质和幼苗生长的影响。

基本信息

  • 批准号:
    RGPIN-2019-04948
  • 负责人:
  • 金额:
    $ 2.04万
  • 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

Soil-plant interactions play a major role in the functioning of terrestrial ecosystems. Because plant species differ in the amount and quality of litter and root exudates they supply to the soil, plant community composition and diversity have important effect on soil properties and biota. Likewise, the soil biota can influence the composition and productivity of plant communities through their effects on soil properties and processes, such as litter decomposition and nutrient cycling. Furthermore, it is widely accepted that in northern North America indigenous earthworms did not survive the most recent glacial period. Nonetheless, some 400 years ago European settlers introduced exotic earthworms in North America which have since colonized most terrestrial ecosystems, including forest ecosystems. As they expanded into forest stands, they modified soil properties and influenced the composition of understory plant communities and the growth of tree seedlings. Despite being considered more resistant to earthworm invasion because of sandy and acidic soils, exotic earthworms have recently colonized several parts of the boreal forests. It is suggested that the presence of hardwood tree species (e.g. aspen and birch) in conifer-dominated stands may have facilitate their establishment in the boreal forest. In the eastern Canadian boreal forest, the introduction of mechanised logging led to hardwood encroachment, notably trembling aspen. As a result of hardwood encroachment, one may hypothesize that exotic earthworms will expand their range or population size in the boreal forest, and that this expansion may modify soil properties and influence tree regeneration, and ultimately alter overstory composition. Although earthworms may exert a major influence on the functioning of terrestrial ecosystems, we know little about the effects of exotic earthworms on soil properties and plant communities, and how the effects of anthropogenic disturbances (e.g. logging) on soil-plant system may be influenced by exotic earthworms. In this context, the main objective of this project is to understand how in natural forest the presence of exotic earthworms influences soil properties and plant communities, and how in logged stands they modulate the effects of logging on soil properties and seedling growth. Ultimately, we seek to develop silvicultural guidelines that take into account the effects of exotic earthworms on soils and vegetation.
土壤-植物相互作用在陆地生态系统的功能中起着重要作用。由于不同植物提供给土壤的凋落物和根系分泌物的数量和质量不同,植物群落组成和多样性对土壤性质和生物区系有重要影响。同样,土壤生物群通过影响土壤性质和过程,如凋落物分解和养分循环,可以影响植物群落的组成和生产力。此外,人们普遍认为,在北美北方,土著蚯蚓没有在最近的冰川期存活下来。尽管如此,大约400年前,欧洲定居者在北美引进了外来的蚯蚓,此后这些蚯蚓在大多数陆地生态系统中定居,包括森林生态系统。当它们扩展到森林时,它们改变了土壤性质,影响了林下植物群落的组成和树苗的生长。尽管由于桑迪和酸性土壤而被认为更能抵抗蚯蚓入侵,但外来蚯蚓最近已经在北方森林的几个地方定居。有人建议,硬木树种(如白杨和桦树)的存在下,在针叶为主的立场可能有促进他们在北方森林的建立。在加拿大东部的北方森林,机械化伐木的引入导致硬木的侵蚀,特别是颤抖的白杨。由于硬木侵蚀,人们可以假设,外来蚯蚓将扩大其范围或人口规模在北方森林,这种扩张可能会改变土壤性质和影响树木再生,并最终改变上层组成。虽然蚯蚓对陆地生态系统的功能可能产生重大影响,但我们对外来蚯蚓对土壤性质和植物群落的影响以及人为干扰(如伐木)对土壤-植物系统的影响知之甚少。在这种情况下,本项目的主要目标是了解如何在天然森林中的外来蚯蚓的存在影响土壤性质和植物群落,以及如何在登录的立场,他们调制的影响,伐木对土壤性质和幼苗生长。最终,我们寻求制定造林指导方针,考虑到外来蚯蚓对土壤和植被的影响。

项目成果

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Lafleur, Benoit其他文献

Manual patient transfers: factors that influence decisions and kinematic strategies employed by nursing aides
  • DOI:
    10.1080/00140139.2018.1550215
  • 发表时间:
    2019-04-03
  • 期刊:
  • 影响因子:
    2.4
  • 作者:
    Lafleur, Benoit;Weaver, Tyler B.;Liang, Andrew C.
  • 通讯作者:
    Liang, Andrew C.
Growth of planted black spruce seedlings following mechanical site preparation in boreal forested peatlands with variable organic layer thickness: 5-year results
  • DOI:
    10.1007/s13595-011-0136-5
  • 发表时间:
    2011-12-01
  • 期刊:
  • 影响因子:
    3
  • 作者:
    Lafleur, Benoit;Pare, David;Bergeron, Yves
  • 通讯作者:
    Bergeron, Yves
Maximum Annual Potential Yields of Salix miyabeana SX67 in Southern Quebec and Effects of Coppicing and Stool Age
  • DOI:
    10.1007/s12155-016-9752-0
  • 发表时间:
    2016-12-01
  • 期刊:
  • 影响因子:
    3.6
  • 作者:
    Fontana, Mario;Lafleur, Benoit;Belanger, Nicolas
  • 通讯作者:
    Belanger, Nicolas
COVID-19 Vaccination Delivery in Long-Term-Care using the CARD (Comfort Ask Relax Distract) System: Mixed Methods study of Implementation Drivers.
  • DOI:
    10.1080/24740527.2022.2115880
  • 发表时间:
    2022
  • 期刊:
  • 影响因子:
    2.4
  • 作者:
    Taddio, Anna;McGilton, Katherine S.;Zheng, Nancy;Yeung, Lydia;Lafleur, Benoit;Fung, Jollee S. T.;MacDonald, Noni E.;Andrew, Melissa K.;Verschoor, Chris P.
  • 通讯作者:
    Verschoor, Chris P.
Do harvest methods and soil type impact the regeneration and growth of black spruce stands in northwestern Quebec?
  • DOI:
    10.1139/x10-128
  • 发表时间:
    2010-09-01
  • 期刊:
  • 影响因子:
    2.2
  • 作者:
    Lafleur, Benoit;Pare, David;Bergeron, Yves
  • 通讯作者:
    Bergeron, Yves

Lafleur, Benoit的其他文献

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{{ truncateString('Lafleur, Benoit', 18)}}的其他基金

Twenty-year monitoring of silvicultural treatments and road reclamation for caribou conservation in the boreal mixedwoods
对北方混交林驯鹿保护的造林处理和道路开垦的二十年监测
  • 批准号:
    537963-2018
  • 财政年份:
    2020
  • 资助金额:
    $ 2.04万
  • 项目类别:
    Collaborative Research and Development Grants
Investigating the effects of invading earthworms on soil properties and seedling growth in forest ecosystems.
研究入侵蚯蚓对森林生态系统土壤性质和幼苗生长的影响。
  • 批准号:
    RGPIN-2019-04948
  • 财政年份:
    2020
  • 资助金额:
    $ 2.04万
  • 项目类别:
    Discovery Grants Program - Individual
Interaction between forest tent caterpillar and forest composition: Role of predation in outbreak dynamics and effects on litter, soils and tree regeneration
森林帐篷毛毛虫与森林组成之间的相互作用:捕食在爆发动态中的作用以及对凋落物、土壤和树木再生的影响
  • 批准号:
    522722-2017
  • 财政年份:
    2020
  • 资助金额:
    $ 2.04万
  • 项目类别:
    Collaborative Research and Development Grants
Interaction between forest tent caterpillar and forest composition: Role of predation in outbreak dynamics and effects on litter, soils and tree regeneration
森林帐篷毛毛虫与森林组成之间的相互作用:捕食在爆发动态中的作用以及对凋落物、土壤和树木再生的影响
  • 批准号:
    522722-2017
  • 财政年份:
    2019
  • 资助金额:
    $ 2.04万
  • 项目类别:
    Collaborative Research and Development Grants
Investigating the effects of invading earthworms on soil properties and seedling growth in forest ecosystems.
研究入侵蚯蚓对森林生态系统土壤性质和幼苗生长的影响。
  • 批准号:
    RGPIN-2019-04948
  • 财政年份:
    2019
  • 资助金额:
    $ 2.04万
  • 项目类别:
    Discovery Grants Program - Individual
Investigating the effects of invading earthworms on soil properties and seedling growth in forest ecosystems.
研究入侵蚯蚓对森林生态系统土壤性质和幼苗生长的影响。
  • 批准号:
    DGECR-2019-00190
  • 财政年份:
    2019
  • 资助金额:
    $ 2.04万
  • 项目类别:
    Discovery Launch Supplement
Twenty-year monitoring of silvicultural treatments and road reclamation for caribou conservation in the boreal mixedwoods
对北方混交林驯鹿保护的造林处理和道路开垦的二十年监测
  • 批准号:
    537963-2018
  • 财政年份:
    2019
  • 资助金额:
    $ 2.04万
  • 项目类别:
    Collaborative Research and Development Grants
Interaction between forest tent caterpillar and forest composition: Role of predation in outbreak dynamics and effects on litter, soils and tree regeneration
森林帐篷毛毛虫与森林组成之间的相互作用:捕食在爆发动态中的作用以及对凋落物、土壤和树木再生的影响
  • 批准号:
    522722-2017
  • 财政年份:
    2018
  • 资助金额:
    $ 2.04万
  • 项目类别:
    Collaborative Research and Development Grants
Modelling soil carbon sequestration in willow bioenergy plantations
模拟柳树生物能源种植园的土壤碳固存
  • 批准号:
    421077-2012
  • 财政年份:
    2013
  • 资助金额:
    $ 2.04万
  • 项目类别:
    Postdoctoral Fellowships
Modelling soil carbon sequestration in willow bioenergy plantations
模拟柳树生物能源种植园的土壤碳固存
  • 批准号:
    421077-2012
  • 财政年份:
    2012
  • 资助金额:
    $ 2.04万
  • 项目类别:
    Postdoctoral Fellowships

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