Establishing a high spatial density biomonitoring system for atmospheric depositions in Eastern Canada.

该项目旨在为加拿大东部人为造成的无机和有机大气污染物确定一个基准。魁北克的大气沉积数据很少，这些数据来自加拿大环境和气候变化大气方案的几个地点。因此，评估人类活动对大规模大气沉积的影响依赖于几个台站和预测模型。这些模型适用于常规采样的污染物（例如硫、氮和汞），而许多无机和有机污染物则不包括在内。此外，模拟的污染物缺乏强有力的验证，因为该国的大部分地区没有被大气站覆盖。该项目的主要目标是在魁北克范围内对目前大气中有机和无机污染物的沉积情况进行实地数据评估，并大大提高大气沉积模型数据的地理覆盖面和密度。该项目将产生宝贵的数据，以前所未有的空间分辨率了解目前全省范围内污染物的大气沉积情况，为指导地方、省和国家各级的环境行动和优先事项提供必要的信息。该项目将有助于苔藓监测倡议（https：bryomonitoring.ca），旨在建立一个泛加拿大和长期的生物监测计划在加拿大。这一基线将成为今后监测大气沉积物的基础;它将成为决策者和利益攸关方可用来估计环境政策和人类活动在今后几十年中如何影响环境质量的及时参考。它将有助于改进模型，这些模型是在全国范围内预测大气沉降的基本工具。

The project aims at establishing a baseline for inorganic and organic atmospheric contaminants of anthropogenic origin in Eastern Canada. Data on atmospheric deposition are scarce in Quebec and come from a few sites hosted by the atmospheric program of Environment and Climate Change Canada (ECCC). Evaluating the impact of human activities on atmospheric deposition at large scale thus relies on few stations and on predictive models. These models exist for contaminants sampled on a routine basis (such as sulfur, nitrogen and mercury for instance) while many inorganic and organic contaminants are not covered. Moreover, the modeled contaminants lack strong validation because large areas of the country are not covered by atmospheric stations. The main objectives of this project are to produce a field-data based evaluation of current atmospheric deposition of contaminants, both organic and inorganic, at the Quebec scale, and significantly improve the geographic cover and density of data feeding atmospheric deposition models. This project will yield valuable data with a never achieved spatial resolution on current atmospheric deposition of contaminants at the scale of the province providing essential information to guide environmental actions and priorities at the local, provincial and national levels. The project will contribute to the bryomonitoring initiative (https://bryomonitoring.ca), aiming at establishing a panCanadian and long-term biomonitoring program in Canada. This baseline will be the foundation for future monitoring of atmospheric depositions; it will be a reference in time that decision makers and stakeholders can use to estimate how environmental policies and human activities impact environmental quality in the decades to come. It will help improving models that are essential tools to predict atmospheric depositions at the National scale.