The database is updated weekly on Friday. Wetlands such as these are not wastelands, emphasizes Environment Canada scientist Dr Tom Clair, who lists several important functions they fulfill. Wetlands can provide a buffer against acid rain, reducing its adverse effects on lakes and ponds and the plant and animal life they support. These areas also help protect water quality and quantity by absorbing large quantities of environmental contaminants while allowing water to penetrate through to the water table. As a result, groundwater is kept relatively clean and safe to drink.
Wetlands are also good indicators of climate change.
Monitoring and studying wetlands can provide a better understanding of such changes and can lead to quicker remedial action. Finally, in addition to providing a habitat for many species of plant and animal life, wetlands offer, by virtue of their spongy structure, a high degree of water absorption which helps lower the risk of flooding in the surrounding environment.