The Lake Champlain Basin's living natural resources, including fish, wildlife and nuisance nonnative aquatic species such as sea lamprey, are part of a complex ecosystem. These plants and animals depend on interconnected aquatic and terrestrial habitats, such as the broad open waters of the Lake, the rivers and streams that flow into it, wetlands and shallow water flats, islands, forests, agricultural lands and other areas. Humans are also part of the ecosystem, and in many places the effects of human activities, land use changes, and development have had severe adverse consequences on local ecosystems.

• Aquatic Invasive and Nuisance Species in Lake Champlain
  Alewife, Eurasian Watermilfoil, Japanese Knotweed, Purple Loosestrife, Rusty Crayfish, Sea Lamprey, Tench, Water Chestnut, White Perch, Zebra Mussel, Variable-Leaf Watermilfoil, and Didymo
• Aquatic Invasive Species Threats
  Invaders to watch out for: Eurasian Ruffe, Fishhook & Spiny Water Fleas, Hydrilla, Quagga Mussels, and Round Goby
• Aquatic Invasive Species Spread Prevention
  Learn about efforts to stop invasions to the Champlain watershed
• Fish and Wildlife
  Amphibians and Reptiles, Birds, Cormorants, Invertebrates, Fish Hatcheries, Fish Species, Mammals, Plants, and Endangered/Threatened Species
• Fish and Wildlife Species Lists
  Threatened and endangered, fish, mammals, amphibians, and birds
• Wetlands
  Protection, acquisition, restoration, and mapping
• Phytoplankton and Zooplankton
  Learn more about the microscopic base of the Lake's food web