conservATION AND RESTORATION
Although it will never be like it was 200 years ago, the valley is adapting. Work is needed to support appropriate tree species, and to limit invasive species, but the valley again has abundant wildlife with deer and mink, with salmon and trout in the river.
Weirs were built largely to erosion and flooding, but also helping control the sea lamprey the St. Lawrence Seaway had introduced. http://www.invadingspecies.com/invaders/fish/sea-lamprey/
Toronto Region Conservation Authority has built a fish ladder near our weir to aid in fish migration, and helped restocked the Humber with several species of trout and salmon. There is now fly fishing in Mount Dennis, with fish a metre long caught regularly. And most critically, the fish are spawning and returning to the Humber so they will become more abundant!
Many invasive species, especially Manitoba Maple, have established themselves. One of the goals of the trail is to gradually supress the invasive and unwanted growth, and encourage more desirable species appropriate to the Carolinian forest we now see with vines covering everything.