The findings are important in the context of human - caused climate change, which is expected to increase nitrogen, and potentially nitrate, levels in tundra soil. (sciencedaily.com)
This likely explains why runoff from tundra soil to the Arctic Ocean — which other researchers have estimated totals 50 to 85 tons per year — accounts for half to two - thirds of total mercury input into the Arctic Ocean. (scientificamerican.com)
In the Arctic, it is deposited onto tundra soils and ultimately runs off into ocean waters, threatening the region's wildlife and people. (scientificamerican.com)