Cumulative effects on sediment and associated chemical fluxes at the landscape scale: the role of geomorpological connectivity

景观尺度上沉积物和相关化学通量的累积效应:地貌连通性的作用

基本信息

  • 批准号:
    341995-2013
  • 负责人:
  • 金额:
    $ 1.97万
  • 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:
    2013
  • 资助国家:
    加拿大
  • 起止时间:
    2013-01-01 至 2014-12-31
  • 项目状态:
    已结题

项目摘要

One of the current research themes in environmental science is how natural and anthropogenic pressures or stressors - such as climate change, land-use activities like forestry and mining, and natural events like wildfires - affect water resources and aquatic ecosystems. This interest is driven by the recognition that most, if not all, water bodies are affected by multiple stressors (often termed cumulative effects) that impact water quantity (e.g. water flows) and water quality (e.g. chemistry, sediment concentrations). The objective of this research project is to determine the cumulative effects of multiple stressors on the environment by focusing on the Quesnel River Basin (QRB, ca. 12,000 km2) in central British Columbia. The overall research project will specifically focus on how geomorphological connectivity (e. g. linkages between land and rivers, and linkages within channels) influences the transfer of sediment and associated chemicals - like trace metals (i.e. arsenic, copper, zinc), nutrients (e.g. phosphorus) and particulate carbon - due to stressors acting in the QRB. One project will evaluate the role of storage elements (specifically glacial forefields, riparian buffers, floodplains, and channel beds) in controlling how sediment and associated chemicals move through landscapes that have been influenced by climate change and land-use activities. In particular, this project will determine if such storage elements attenuate and/or modify material flows and fates. A second project will employ a nested monitoring program in conjunction with sediment tracers, to follow the movement of sediment and chemicals downstream of specific land-use activities such as agriculture, forestry and mining. A third project will use existing spatially distributed models to examine the role of geomorphological connectivity on sediment and associated chemical responses to stressors at the watershed-scale, utilizing the empirical information obtained from the first two projects and an existing GIS platform available for the QRB. The work will provide an improved understanding of how watersheds respond to cumulative effects in a rapidly changing world, which will help to protect water resources and aquatic habitats in Canada.
环境科学目前的研究主题之一是自然和人为压力或压力源-如气候变化,林业和采矿等土地使用活动以及野火等自然事件-如何影响水资源和水生生态系统。这种兴趣是由于认识到,大多数(如果不是全部的话)水体受到影响水量(如水流)和水质(如化学、沉积物浓度)的多种压力因素(通常称为累积效应)的影响。本研究项目的目的是确定多个压力源对环境的累积影响,重点是奎斯奈尔河流域(QRB,约。12,000平方公里),位于不列颠哥伦比亚省中部。整个研究项目将特别侧重于地貌连通性(e。G.由于QRB中的压力因素,陆地与河流之间的联系以及渠道内的联系)影响沉积物和相关化学品的转移,如微量金属(即砷、铜、锌)、营养物质(如磷)和颗粒碳。其中一个项目将评估储存要素(特别是冰川前田、河岸缓冲区、洪泛平原和河床)在控制沉积物和相关化学品如何通过受气候变化和土地利用活动影响的景观移动方面的作用。特别是,该项目将确定这种存储元件是否会减弱和/或改变材料流动和命运。第二个项目将采用嵌套监测方案,结合沉积物示踪剂,跟踪农业、林业和采矿等具体土地使用活动下游的沉积物和化学品的移动。第三个项目将利用现有的空间分布模型,研究地貌连通性对沉积物的作用和相关的化学反应的压力在流域规模,利用从前两个项目和现有的地理信息系统平台获得的经验信息,可用于QRB。这项工作将使人们更好地了解流域如何在迅速变化的世界中应对累积效应,这将有助于保护加拿大的水资源和水生生境。

项目成果

期刊论文数量(0)
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Owens, Philip其他文献

Bone morphogenetic protein signaling promotes tumorigenesis in a murine model of high-grade glioma
  • DOI:
    10.1093/neuonc/nov310
  • 发表时间:
    2016-07-01
  • 期刊:
  • 影响因子:
    15.9
  • 作者:
    Hover, Laura D.;Owens, Philip;Abel, Ty W.
  • 通讯作者:
    Abel, Ty W.
Polymorphonuclear myeloid-derived suppressor cells and phosphatidylinositol-3 kinase gamma are critical to tobacco-mimicking oral carcinogenesis in mice.
  • DOI:
    10.1136/jitc-2023-007110
  • 发表时间:
    2023-09
  • 期刊:
  • 影响因子:
    10.9
  • 作者:
    Nguyen, Khoa A.;Depledge, Lisa N.;Bian, Li;Ke, Yao;Samedi, Von;Berning, Amber A.;Owens, Philip;Wang, Xiao-Jing;Young, Christian D.
  • 通讯作者:
    Young, Christian D.
Smad4-dependent desmoglein-4 expression contributes to hair follicle integrity.
SMAD4依赖性的Desmoglein-4表达有助于毛囊完整性。
  • DOI:
    10.1016/j.ydbio.2008.07.020
  • 发表时间:
    2008-10-01
  • 期刊:
  • 影响因子:
    2.7
  • 作者:
    Owens, Philip;Bazzi, Hisham;Engelking, Erin;Han, Gangwen;Christiano, Angela M.;Wang, Xiao-Jing
  • 通讯作者:
    Wang, Xiao-Jing
Loss of Myeloid BMPR1a Alters Differentiation and Reduces Mouse Prostate Cancer Growth
  • DOI:
    10.3389/fonc.2020.00357
  • 发表时间:
    2020-04-07
  • 期刊:
  • 影响因子:
    4.7
  • 作者:
    Ihle, Claire L.;Straign, Desiree M.;Owens, Philip
  • 通讯作者:
    Owens, Philip
Disruption of bone morphogenetic protein receptor 2 (BMPR2) in mammary tumors promotes metastases through cell autonomous and paracrine mediators

Owens, Philip的其他文献

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{{ truncateString('Owens, Philip', 18)}}的其他基金

Advancing techniques to fingerprint sediment sources in disturbed watersheds
先进技术对受干扰流域的沉积物来源进行指纹识别
  • 批准号:
    RGPIN-2018-06360
  • 财政年份:
    2022
  • 资助金额:
    $ 1.97万
  • 项目类别:
    Discovery Grants Program - Individual
Advancing techniques to fingerprint sediment sources in disturbed watersheds
先进技术对受干扰流域的沉积物来源进行指纹识别
  • 批准号:
    RGPIN-2018-06360
  • 财政年份:
    2021
  • 资助金额:
    $ 1.97万
  • 项目类别:
    Discovery Grants Program - Individual
Advancing techniques to fingerprint sediment sources in disturbed watersheds
先进技术对受干扰流域的沉积物来源进行指纹识别
  • 批准号:
    RGPIN-2018-06360
  • 财政年份:
    2020
  • 资助金额:
    $ 1.97万
  • 项目类别:
    Discovery Grants Program - Individual
Advancing techniques to fingerprint sediment sources in disturbed watersheds
先进技术对受干扰流域的沉积物来源进行指纹识别
  • 批准号:
    RGPIN-2018-06360
  • 财政年份:
    2019
  • 资助金额:
    $ 1.97万
  • 项目类别:
    Discovery Grants Program - Individual
Advancing techniques to fingerprint sediment sources in disturbed watersheds
先进技术对受干扰流域的沉积物来源进行指纹识别
  • 批准号:
    RGPIN-2018-06360
  • 财政年份:
    2018
  • 资助金额:
    $ 1.97万
  • 项目类别:
    Discovery Grants Program - Individual
Cumulative effects on sediment and associated chemical fluxes at the landscape scale: the role of geomorpological connectivity
景观尺度上沉积物和相关化学通量的累积效应:地貌连通性的作用
  • 批准号:
    341995-2013
  • 财政年份:
    2017
  • 资助金额:
    $ 1.97万
  • 项目类别:
    Discovery Grants Program - Individual
Cumulative effects on sediment and associated chemical fluxes at the landscape scale: the role of geomorpological connectivity
景观尺度上沉积物和相关化学通量的累积效应:地貌连通性的作用
  • 批准号:
    341995-2013
  • 财政年份:
    2015
  • 资助金额:
    $ 1.97万
  • 项目类别:
    Discovery Grants Program - Individual
Cumulative effects on sediment and associated chemical fluxes at the landscape scale: the role of geomorpological connectivity
景观尺度上沉积物和相关化学通量的累积效应:地貌连通性的作用
  • 批准号:
    341995-2013
  • 财政年份:
    2014
  • 资助金额:
    $ 1.97万
  • 项目类别:
    Discovery Grants Program - Individual
Impacts of wildfire on soil erosion and fine-grained sediment dynamics in forested aquatic systems
野火对森林水生系统土壤侵蚀和细粒沉积物动态的影响
  • 批准号:
    341995-2007
  • 财政年份:
    2011
  • 资助金额:
    $ 1.97万
  • 项目类别:
    Discovery Grants Program - Individual
Impacts of wildfire on soil erosion and fine-grained sediment dynamics in forested aquatic systems
野火对森林水生系统土壤侵蚀和细粒沉积物动态的影响
  • 批准号:
    341995-2007
  • 财政年份:
    2010
  • 资助金额:
    $ 1.97万
  • 项目类别:
    Discovery Grants Program - Individual

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了解沉积物密度和海滩地形对沉积物输运动态的影响并对其进行建模
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开发多尺度沉积物连通性模型,以改善全球沉积物产量预测并研究土地利用和气候变化对土壤侵蚀的影响
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