Temporal and regional effects of forest harvesting on mercury bioaccumulation and biomagnification in boreal stream food webs

Forest harvesting can affect mercury (Hg) dynamics in boreal stream food webs by changing the availability and methylation of Hg and dietary exposure to methylmercury (MeHg) through basal resources. The objectives of this study were to quantify the 1) temporal and 2) regional effects of forest harvest on Hg bioaccumulation and biomagnification in streams. From 2019 to 2021, 5 headwater streams were sampled (n = 2 harvested, n = 3 reference) …