What are Environmental Indicators? What is DPSIR? Environmental indicators provide quantitative information on ecological resources, including the state of specific environmental conditions, good or bad. There are several methods to categorize and analyze types of indicators. For Sound Health, each indicator will be classified as a Driver, Pressure, State, Impact, or Response under the “DPSIR” framework.
Definitions of DPSIR Indicator Types (Source: European Water Framework Directive)
• Driver—an anthropogenic activity that may have an environmental effect (e.g. agriculture, industry); also driving force.
• Pressure—the direct effect of the driver (e.g. an effect that causes a change in flow or a change in the water chemistry of surface and groundwater bodies.
• State—The condition of the water body resulting from both natural and anthropogenic factors (i.e. physical, chemical, and biological characteristics).
• Impact—The environmental effect of a human or ecological pressure (e.g. fish killed, ecosystem modified).
• Response—The human response (e.g. habitat restoration, pollution reduction) to a pressure or state. |

| WATER QUALITY Water Quality measures: Indicators include water quality index based on five measures, and specific indicators for water clarity, chlorophyll-a concentrations, dissolved oxygen, and reducing nitrogen loads. (Section 2.1) 19 slides Toxic Contaminants: Indicators include the EPA Toxics Release Inventory (Section 2.2) 12 slides Pathogens: Indicators include number of beach closure days and number of vessel pumpout stations (Section 2.3) 4 slides Floatable Debris: Indicator includes pounds of debris cleaned in beach cleanup days (Section 2.4) 4 slides |

| LIVING MARINE RESOURCES Shellfish: Indicators include acreage of shellfish beds, and harvests of important commercial mollusks and crustaceans (oyster and lobster) (Section 3.1) 5 slides Finfish: Indicators include abundance of popular sport fish (such as striped bass and bluefish), fish biomass, and abundance of fish that spawn in rivers in the Sound’s watershed.
(Section 3.2) 22 slides Seals: Number of seals observed in winter months at two monitoring locations. (Section 3.3) 2 slides Coastal Bird Populations: Indicators consist of two birds that inhabit Long Island Sound beaches (piping plover and least tern) and wading birds that forage in tidal marshes. (Section 3.4) 4 slides |