|Parks and Protected Areas
Pesticides, herbicides and fertilizers are among the toxic pollutants that are contaminating the wetlands, fresh water and wildlife of National Wildlife Areas and Migratory Bird Sanctuaries, particularly in the Prairies. Herbicides are killing off the plant species upon which monarch butterflies depend, and these and other toxins can cause reproductive or developmental failure in wildlife. Excess fertilization of lakes and wetlands can cause massive growths of algae, which consumes the available oxygen in the water and results in an increase in fish mortality rates. These toxins may also place birds at greater risk to natural diseases, such as avian botulism, which occurs periodically in prairie wetlands.
More than 28 National Wildlife Areas and Migratory Bird Sanctuaries are contaminated with petrochemicals, oil from fuel drums, sewage, unexploded munitions, and heavy metals. Many northern and coastal sites and those along the St. Lawrence River are at grave risk from oil spills and illegal dumping of bilge water.
Pollutants affecting National Wildlife Areas and Migratory Bird Sanctuaries
Here are two cases of pollution problems.
threaten wildlife at Redberry Lake Migratory Bird Sanctuary
spill from cargo ships a threat to Cap Tourmente National
Wildlife Area waterfowl