Walks & Talks
The Thunder Bay FIeld Naturalists offer walks (field trips), talks (general meetings/indoor lectures) and workshops depending on the time of year. There is also an active Juniors Program for the young and young-at-heart.
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There is no charge for attendance at TBFN walks and talks. Non-members are always welcome!
TBFN Calendar of Events
Location is 243 Klages Road. We will meet at the Movati Athletic Club at 8:45pm. Highlights will be the moon and Jupiter (rises at 11:30) as well as various nebulas. Plan to bring a USB drive for your images. Register with Marian Childs 577-1324 as soon as possible. March 6, 2017
Mercury is a natural element occurring in air, water and soil, but environmental levels have increased over the past century primarily due to industrial pollution at a global scale. The organic form of mercury, methylmercury (MeHg), can bioaccumulate and biomagnify in aquatic food webs posing a risk to aquatic organisms and other animals that feed on them. In Ontario, most fish consumption advisories are due to mercury contamination. Disturbances such as forest management or forest fire have been shown to influence mercury in forests and in some cases increase the levels in aquatic systems. This presentation will discuss the complex processes involved in forest mercury dynamics, review some research on the issue for northwestern Ontario and beyond and discuss efforts by MNRF to develop best management practices during forest management operations which may help to reduce the mobilization of mercury, and other metals and nutrients, stored in forest soils. March 27, 2017