They control flooding, purify water, recharge groundwater, and provide productive habitat. Tidal wetlands are very productive ecosystems. The Connecticut River has internationally significant tidal wetlands. Grasslands, especially large areas, are a declining habitat type in the Connecticut River watershed. Grassland bird species need habitat management to maintain open areas.
Some species require large areas of unbroken forest.
The timber rattlesnake and some songbirds are examples. In the southern half of the watershed, efforts to preserve and manage large blocks of unbroken habitat must be made. The unfragmented habitats in the northern half of the watershed should be recognized as important habitat. Some urban habitats are important to the conservation of fish and wildlife resources, including endangered and threatened species. Protecting and enhancing urban natural areas can benefit wildlife and people.