
What is Happening to our Forest Ravines and Creeks?
The valleys and forests in many urban areas are disappearing at an alarming rate. In some instances, this is due to human carelessness, people using urban ravines as unlawful dumps and municipalities allowing piles of garbage to build up on the forest floor, making it uninhabitable for wildlife. But in other cases, it is nature attacking itself as invasive plant species, like Japanese knotweed, are smothering the native grasses and plants and killing off the indigenous undergrowth. Invasive species are frequently more aggressive than native species and can quickly take over whole sections of a forest ravine. Trees like the European buckthorn and Norway maple create dense canopies and heavy shade, eliminating growth on the slopes and exposing the ravines to accelerated erosion from water runoff. A lack of ground cover makes soil erosion more prevalent, exposing the roots of beautiful old maples and oaks to the elements and leaving them vulnerable to diseases and being blown over by strong winds.Taking Care our Green Spaces
One of the most famous ravine systems in Canada can be found in Toronto. No other urban center in the world has such an abundance of steep corridors of woodland and thickly forested valleys. In total the Toronto forest ravines are 30 times bigger than New York’s Central Park but if they are not protected and maintained they will not be around for future generations to enjoy.