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Blatt, H. and Tracy, R.J. (1997) Petrology. 2nd Edition, Freeman, New York.

has been cited by the following article:

  • TITLE: Does Dust from Arctic Mines Affect Caribou Forage?

    AUTHORS: Wenjun Chen, Sylvain G. Leblanc, H. Peter White, Christian Prevost, Brian Milakovic, Christine Rock, Greg Sharam, Harry O’Keefe, Laura Corey, Bruno Croft, Anne Gunn, Sjoerd van der Wielen, Adeline Football, Boyan Tracz, Jody Snortland Pellissey, John Boulanger

    KEYWORDS: Mining, Arctic, Caribou Habitat, Road Dust, PM2.5, Vegetation Cover, Lichen, Soil pH, Dust Deposition

    JOURNAL NAME: Journal of Environmental Protection, Vol.8 No.3, March 16, 2017

    ABSTRACT: This study explores how dust from the Ekati Diamond Mine potentially affects the availability and quality of forage on the seasonal range of the Bathurst caribou herd. Understanding the effects of dust as a source of disturbance is important because the Bathurst caribou population has declined by 93% since the middle 1980s and there are reports that caribou in general may avoid mining projects. There are several challenges for quantifying dust impacts: 1) Natural variations (e.g., topography, natural disturbance, and soil pH) may also impact forage availability and quality for caribou. To minimize their masking effect, we stratified survey sites into seven land cover classes and selected the most populous class (i.e., the dwarf shrub) for assessing the impact. 2) Within class variation (e.g., the proportion of area covered by rocks where vascular plants and lichen do not grow) can further skew the analysis. We eliminated this problem by examining only the area not covered by rocks. 3) Coarse and fine suspended particulates have different spatial coverages, chemical compositions, and pH values. Consequently, their impacts on caribou forage can be different. To distinguish their impacts, we sampled two areas: transects from the Misery Haul Road that has been in active use vs. those from a rarely used spur road outside the Misery Camp. We sampled percent vegetation cover, soil pH, and dust on leaves along these transects during the summers of 2015 and 2016. Our results indicated that the amount of dust on leaves in a zone of ~1000 m from the Misery Haul Road was 3 - 9 times than that of background sites. The zone of reduced lichen percent cover was also about 1000 m. In contrast, these road dust-induced changes in caribou forage were not observed for the dust-free transect from the spur road.