Alvars are unique ecosystems characterized by limestone or dolostone bedrock, often found in regions like Ontario in Canada. They feature sparse vegetation, including grasses, mosses, and low shrubs, and are typically located in areas with thin soil cover. The open landscape allows for a diverse range of plant and animal species adapted to these conditions. These habitats are important for biodiversity, supporting rare species such as the Eastern Bluebird and various orchids. Alvars are also significant for their geological features, showcasing exposed rock formations and unique soil types. Conservation efforts are crucial to protect these fragile environments from development and invasive species.