Photos of the Long Island Sound

Status and Trends: LISS Environmental Indicators

Type of Indicators: Health/Condition Response/Performance Socio-Economic Historical/Background

Finfish

Spawning Runs in LIS tributaries

Index of Anadromous Fish Runs

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. View Indicator

Herring Runs at Streams with Upstream Planned Fishway Projects

These counts indicate progress in expanding upstream habitat as fishway projects are completed. View Indicator

Atlantic Salmon Restoration in the CT River

This indicator is the abundance of Atlantic salmon counted at observation stations in the Connecticut River from 1967-2009. View Indicator

Fish Populations in Long Island Sound

Forage Fish – Open Water/CT Coastline

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. View Indicator

Finfish Biomass Index/Species Richness

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. View Indicator

Game Fish

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. View Indicator

Water Temperature

Yearly seasonal temperatures from 1976-2011, measured in Niantic Bay by the Millstone Environmental Lab. View Indicator

Shad & Blueback Herring—Long Island Sound

Abundance of American shad and blueback herring, as reported in the Long Island Sound Trawl Survey. View Indicator

 
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