Cycling and trophic transfer of metals in a changing environment

变化环境中金属的循环和营养转移

基本信息

  • 批准号:
    RGPIN-2018-04810
  • 负责人:
  • 金额:
    $ 3.42万
  • 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:
    2020
  • 资助国家:
    加拿大
  • 起止时间:
    2020-01-01 至 2021-12-31
  • 项目状态:
    已结题

项目摘要

Climate change, new mining projects, increased atmospheric deposition from emerging Asian economies, and introduction of new substances in urban areas will modify the emission, transport, transformation and fate of metals in Canada, with unknown consequences on ecosystem health. For instance, there are currently 200 mining projects under consideration for rare earth elements (REEs) in Canada, a group of metals little known from an ecotoxicological standpoint, whereas mercury (Hg) emissions are expected to rise considerably in the next decades. Our long-term research plan focuses on the biogeochemistry and food web transfer of metals up to human exposure in changing environment. In the past 6 years, I (co)supervised 58 highly qualified personnel (HQP); my team and I published 37 peer-reviewed papers and presented 121 times at conferences. In the next five years, we will build on our recent advances by conducting targeted studies on emerging issues related to metal biogeochemistry. Theme 1. First, our recent work has suggested that aquatic biofilms may form key sites of transformations of Hg in the North (unstratified polar thaw ponds) and in the south (St. Lawrence River). We will establish what controls metal complexation in these biofilms and how emergent contaminants such as microplastics, can modify biofilm/metal interactions. Theme 2. Most trophic transfer studies of contaminants use stable isotopes of N and C to understand food web relationships and transfer. We will assess a complementary conceptual approach based on subcellular partitioning of metals and use it on single metals, including those of emergent concerns (i.e. REE), and antagonistic combinations of metals. 16 HQP will be trained through this interdisciplinary program, at the intersection of ecology, toxicology, genomics and analytical chemistry, preparing them for the job market of tomorrow. This program will allow to better predict the fate and effect of metals in a changing environment. It will lead to significant fundamental advances regarding the role of aquatic biofilms in metal cycling and the mechanism involved in metal trophic transfer. The data generated on REE transformation and trophic transfer will be the first of this kind in Canada and will inform decision-makers at the dawn of an era of REE mining in this country. The study on the effect of MP on metal cycling will likely be the first in Canada and will help assess risk associated with this emerging threat.
气候变化、新的采矿项目、新兴亚洲经济体的大气沉降增加以及城市地区新物质的引入将改变加拿大金属的排放、运输、转化和命运,对生态系统健康产生未知的后果。例如,加拿大目前正在考虑200个开采稀土元素的项目,从生态毒理学的角度来看,这是一组鲜为人知的金属,而汞的排放量预计在未来几十年将大幅增加。我们的长期研究计划集中在生物地球化学和食物网转移的金属,直到人类暴露在不断变化的环境。6年来,我(co)管理了58名高素质人才(HQP);我和我的团队发表了37篇同行评议的论文,在会议上发表了121次。未来五年,我们将在现有研究成果的基础上,针对金属生物地球化学相关的新问题开展针对性研究。主题1。首先,我们最近的工作表明,水生生物膜可能在北部(无分层极地解冻池)和南部(圣劳伦斯河)形成汞转化的关键场所。我们将建立什么控制金属络合在这些生物膜和如何紧急污染物,如微塑料,可以修改生物膜/金属相互作用。主题2。大多数污染物的营养转移研究都使用N和C的稳定同位素来了解食物网的关系和转移。我们将评估一种基于金属亚细胞划分的互补概念方法,并将其用于单一金属,包括那些紧急关注的金属(即REE)和金属的拮抗组合。

项目成果

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Amyot, Marc其他文献

Rare earth elements in freshwater, marine, and terrestrial ecosystems in the eastern Canadian Arctic
Global Meta-Analysis on the Relationship Between Mercury and Dissolved Organic Carbon in Freshwater Environments
Mercury, hydroquinone and clobetasol propionate in skin lightening products in West Africa and Canada
  • DOI:
    10.1016/j.envres.2016.06.030
  • 发表时间:
    2016-10-01
  • 期刊:
  • 影响因子:
    8.3
  • 作者:
    Gbetoh, Metogbe Honore;Amyot, Marc
  • 通讯作者:
    Amyot, Marc
Methanogens: Principal Methylators of Mercury in Lake Periphyton
  • DOI:
    10.1021/es2010072
  • 发表时间:
    2011-09-15
  • 期刊:
  • 影响因子:
    11.4
  • 作者:
    Hamelin, Stephanie;Amyot, Marc;Planas, Dolors
  • 通讯作者:
    Planas, Dolors
Enhanced Bioaccumulation and Transfer of Monomethylmercury through Periphytic Biofilms in Benthic Food Webs of a River Affected by Run-of-River Dams.
  • DOI:
    10.1021/acs.est.3c05585
  • 发表时间:
    2023-12-12
  • 期刊:
  • 影响因子:
    11.4
  • 作者:
    Leclerc, Maxime;Ponton, Dominic E.;Bilodeau, Francois;Planas, Dolors;Amyot, Marc
  • 通讯作者:
    Amyot, Marc

Amyot, Marc的其他文献

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{{ truncateString('Amyot, Marc', 18)}}的其他基金

Global change ecotoxicology
全球变化生态毒理学
  • 批准号:
    CRC-2021-00128
  • 财政年份:
    2022
  • 资助金额:
    $ 3.42万
  • 项目类别:
    Canada Research Chairs
Cycling and trophic transfer of metals in a changing environment
变化环境中金属的循环和营养转移
  • 批准号:
    RGPIN-2018-04810
  • 财政年份:
    2022
  • 资助金额:
    $ 3.42万
  • 项目类别:
    Discovery Grants Program - Individual
Contaminant cycling in the changing North
不断变化的北方的污染物循环
  • 批准号:
    518010-2018
  • 财政年份:
    2021
  • 资助金额:
    $ 3.42万
  • 项目类别:
    Discovery Grants Program - Northern Research Supplement
Global Change Ecotoxicology
全球变化生态毒理学
  • 批准号:
    CRC-2014-00076
  • 财政年份:
    2021
  • 资助金额:
    $ 3.42万
  • 项目类别:
    Canada Research Chairs
Solving emerging environmental challenges of the hydroelectric sector in partnership with utilities and Indigenous communities
与公用事业公司和原住民社区合作,解决水电行业新出现的环境挑战
  • 批准号:
    560330-2020
  • 财政年份:
    2021
  • 资助金额:
    $ 3.42万
  • 项目类别:
    Alliance Grants
Cycling and trophic transfer of metals in a changing environment
变化环境中金属的循环和营养转移
  • 批准号:
    RGPIN-2018-04810
  • 财政年份:
    2021
  • 资助金额:
    $ 3.42万
  • 项目类别:
    Discovery Grants Program - Individual
Contaminant cycling in the changing North
不断变化的北方的污染物循环
  • 批准号:
    518010-2018
  • 财政年份:
    2020
  • 资助金额:
    $ 3.42万
  • 项目类别:
    Discovery Grants Program - Northern Research Supplement
Global Change Ecotoxicology
全球变化生态毒理学
  • 批准号:
    CRC-2014-00076
  • 财政年份:
    2020
  • 资助金额:
    $ 3.42万
  • 项目类别:
    Canada Research Chairs
Cycling and trophic transfer of metals in a changing environment
变化环境中金属的循环和营养转移
  • 批准号:
    RGPIN-2018-04810
  • 财政年份:
    2019
  • 资助金额:
    $ 3.42万
  • 项目类别:
    Discovery Grants Program - Individual
Mercury: solving emerging environmental challenges of the hydroelectric sector
Mercury:解决水力发电行业新出现的环境挑战
  • 批准号:
    493474-2015
  • 财政年份:
    2019
  • 资助金额:
    $ 3.42万
  • 项目类别:
    Collaborative Research and Development Grants

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变化环境中金属的循环和营养转移
  • 批准号:
    RGPIN-2018-04810
  • 财政年份:
    2022
  • 资助金额:
    $ 3.42万
  • 项目类别:
    Discovery Grants Program - Individual
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量化和划分中上层海洋生态系统二次生产和营养转移效率的时空变化
  • 批准号:
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