Marine and Coastal Animals

Horseshoe Crab Abundance

March 1, 2012 — This indicator shows the abundance of Horseshoe Crabs in Connecticut and New York. Read More

Forage Fish – Open Water/CT Coastline

February 14, 2012 — The forage indices measures the productivity of small fish in the Sound, which is the basis of the food supply for larger fish, including game fish. Read More

Finfish Biomass Index/Species Richness

February 14, 2012 — Fish biomass indicates the productivity of the Long Island Sound fishery. Species richness measures the diversity of species supported within the Sound's various habitats. Read More

Game Fish

January 27, 2012 — The abundance of game fish is a reflection of the productivity of Long Island Sound and the effectiveness of coast-wide fishery management plans that seek to stabilize populations while maximizing harvest opportunities. Read More

Least Terns

July 22, 2010 — The Least Tern is the smallest of American Terns. They are migratory birds that breed along marine and estuarine shores of the United States. Their abundance indicates the quality of coastal habitat and quantity of forage fish available for food. Read More

Piping Plovers

July 22, 2010 — Piping plovers are small shorebirds that nest on the beaches of Long Island Sound. The abundance of breeding pairs reflects availability of beach nesting habitat and management efforts to protect nesting pairs from human intrusion, storm tides and predators. Read More


July 22, 2010 — Osprey are one of the largest birds of prey in North America, and found throughout the world. Their population was seriously affected by pesticides such as DDT in the 1950s and 1960s. Populations recovered due to the ban on DDT and management efforts to increase available habitat. Populations have recovered to the point where state conservationists have stopped tracking their numbers. Read More

Index of Anadromous Fish Runs

July 13, 2010 — These counts of river herring and shad in Long Island Sound tributaries indicate the quality of upstream habitat that has been opened up as a result of completed fishway projects. Read More

Herring Runs at Streams with Upstream Planned Fishway Projects

July 12, 2010 — These counts indicate progress in expanding upstream habitat as fishway projects are completed. Read More

Water Temperature

July 12, 2010 — Yearly seasonal temperatures from 1976-2011, measured in Niantic Bay by the Millstone Environmental Lab. Read More

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