A salt marsh or saltmarsh, also known as a coastal salt marsh or a tidal marsh, is a coastal ecosystem in the upper coastal intertidal zone between land and open saltwater or brackish water that is regularly flooded by the tides. It is dominated by dense stands of salt-tolerant plants such as herbs, grasses, or low shrubs. These plants are terrestrial in origin and are essential to the stability of the salt marsh in trapping and binding sediments. Salt marshes play a large role in the aquatic food web and the delivery of nutrients to coastal waters. They also support terrestrial animals and provide coastal protection.
The Edwin B. Forsythe National Wildlife Refuge is a United States National Wildlife Refuge located in southern New Jersey along the Atlantic coast north of Atlantic City, in Atlantic and Ocean counties. The refuge was created in 1984 out of two existing refuge parcels created to protect tidal wetland and shallow bay habitat for migratory water birds. The Barnegat Division is located in Ocean County on the inland side of Barnegat Bay. The Brigantine Division is located approximately 10 miles (16 km) north of Atlantic City along the south bank of the mouth of the Mullica River. The two divisions are separated by approximately 20 miles (32 km). The refuge is located along most active flight paths of the Atlantic Flyway, making it an important link in the network of national wildlife refuges administered nationwide by the U.S. Fish and Wildlife Service. Forsythe Refuge is a part of the Hudson River/New York Bight Ecosystem and The New Jersey Coastal Heritage Trail Route. The refuge is named for Edwin B. Forsythe, conservationist Congressman from New Jersey.
Wells National Estuarine Research Reserve, located in Wells, Maine, USA, is 2,250 acres (9.1 km2) of protected land headquartered at a restored saltwater farm called Laudholm. As a National Estuarine Research Reserve, the Wells Reserve works to expand knowledge of coasts and estuaries, engage people in environmental learning, and involve communities in conservation, all with a goal of protecting and restoring coastal ecosystems around the Gulf of Maine. Wells Reserve funding is largely through the National Oceanic and Atmospheric Administration and the nonprofit Laudholm Trust.
The Lower Suwannee National Wildlife Refuge (LSNWR) is part of the United States National Wildlife Refuge System. It is located in southeastern Dixie and northwestern Levy counties on the western coast of Florida, approximately fifty miles southwest of the city of Gainesville.
Bair Island is a marsh area in Redwood City, California, covering 3,000 acres (1,200 ha), and includes three islands: Inner, Middle and Outer islands. Bair Island is part of the larger Don Edwards San Francisco Bay National Wildlife Refuge. It is surrounded by the Steinberger slough to the northwest and Redwood Creek to the southeast.
The Cape May National Wildlife Refuge is a protected area on the Cape May Peninsula in Cape May County, New Jersey. It is part of the National Wildlife Refuge System and managed by the United States Fish and Wildlife Service. Established in January 1989 with 90 acres (0.36 km2) acquired from the Nature Conservancy, it has since grown to more than 11,000 acres (45 km2) in size, and plans call for its further expansion to more than 21,200 acres (86 km2). It comprises three distinct and non-contiguous units: the Delaware Bay Division, the Great Cedar Swamp Division and the Two Mile Beach Unit. Located in the Middle Atlantic coastal forests ecoregion, the cape provides habitat for large numbers of migratory birds.
The John Heinz National Wildlife Refuge at Tinicum is a 1000-acre (4.05 km2) National Wildlife Refuge in Philadelphia and Tinicum Township, Delaware County, in Pennsylvania. Adjacent to the Philadelphia International Airport, the refuge serves to protect the largest remaining freshwater tidal marsh in Pennsylvania. Established in 1972 as the Tinicum National Environmental Center, it was renamed in 1991 after the late H. John Heinz III who had helped preserve Tinicum Marsh.
The Jacques Cousteau National Estuarine Research Reserve, located in southeastern New Jersey, encompasses over 110,000 acres (450 km2) of terrestrial, wetland and aquatic habitats within the Mullica River-Great Bay Ecosystem.
The Napa Sonoma Marsh is a wetland at the northern edge of San Pablo Bay, which is a northern arm of the San Francisco Bay in California, United States. This marsh has an area of 48,000 acres (194 km2), of which 13,000 acres (53 km2) are abandoned salt evaporation ponds. The United States Government has designated 13,000 acres (53 km2) in the Napa Sonoma Marsh as the San Pablo Bay National Wildlife Refuge.
The Seal Beach National Wildlife Refuge is a wildlife refuge encompassing 965 acres (3.91 km2) located in the California coastal community of Seal Beach. Although it is located in Orange County it is included as part of the San Diego National Wildlife Refuge Complex. It was established in 1972.
The Rachel Carson National Wildlife Refuge is a 9,125-acre (37 km2) National Wildlife Refuge made up of several parcels of land along 50 miles (80 km) of Maine's southern coast. Created in 1966, it is named for environmentalist and author Rachel Carson, whose book Silent Spring raised public awareness of the effects of DDT on migratory songbirds, and of other environmental issues.
Elkhorn Slough is a 7-mile-long (11 km) tidal slough and estuary on Monterey Bay in Monterey County, California. It is California's second largest estuary and the United States' first estuarine sanctuary. The community of Moss Landing and the Moss Landing Power Plant are located at the mouth of the slough on the bay.
Cardiff Bay Wetlands Reserve is located in Cardiff Bay in the city of Cardiff. It covers an area of approximately 8 hectares. The area was officially opened as a wildlife reserve on 25 July 2002 in what was previously an area of Site of Special Scientific Interest (SSSI) up until the opening of the Cardiff Bay Barrage in April 2001. The area had previously been salt marsh, but the Barrage created 200 hectares of freshwater lake, and from this the reserve was developed.
San Pablo Bay National Wildlife Refuge is a 13,190-acre (53.4 km2) National Wildlife Refuge in California established in 1970. It extends along the northern shore of San Pablo Bay, from the mouth of the Petaluma River, to Tolay Creek, Sonoma Creek, and ending at Mare Island.
The Grand Bay National Estuarine Research Reserve is one of the most biologically productive estuarine ecosystems in the Gulf of Mexico region, supporting several rare or endangered plant and animal species, numerous important marine fishery resources, diverse habitat types and archaeological sites, in the U.S. State of Mississippi.
The Weeks Bay National Estuarine Research Reserve is a field laboratory and research facility along Weeks Bay estuary, about 6,000 acres (2,400 ha) in size. It receives freshwater from the Magnolia and Fish Rivers, and drains a 198 square miles (510 km2) watershed into the portion of Mobile Bay via a narrow opening. This sub-estuary of Mobile Bay averages just 4.8 ft deep and is fringed with marsh and swamp. The reserve lands also include upland and bottomland hardwood forests, freshwater marsh, submerged aquatic vegetation and unique bog habitats. Weeks Bay is a critical nursery for shrimp, bay anchovy, blue crab and multitudes of other fish, crustaceans and shellfish that support robust commercial fisheries providing $450 million/year for Alabama.
Moosehorn National Wildlife Refuge is one of the northernmost National Wildlife Refuges in the Atlantic Flyway, a migratory route that follows the eastern coast of North America. The refuge provides important feeding and nesting habitat for many bird species, including waterfowl, wading birds, shorebirds, upland game birds, songbirds, and birds of prey.
The Supawna Meadows National Wildlife Refuge is a component of the Delaware River estuary in Salem County, New Jersey, it is just north of the Salem River and south of Pennsville.
The Kendall-Frost Mission Bay Marsh Reserve is a 20-acre University of California Natural Reserve System reserve on the northern shore of Mission Bay in San Diego County, California. Administered by UC San Diego, the site is owned by the University of California and managed for teaching and research.
The Premium River - Pine Brook Wetlands are located on Long Island Sound in the City of New Rochelle, Town of Mamaroneck, and the Village of Larchmont in Westchester County, New York. The fish and wildlife habitat is an approximately 65 acre area including Pine Brook south of the Boston Post Road, the Premium River, Premium Mill-Pond, the northeast portion of Echo Bay, and Pryer Manor Marsh.The land area bordering the wetlands complex is predominantly moderate density residential and commercial. The portion of the habitat area within Mamaroneck and Larchmont was designated as a 'Critical Environmental Area' under the State Environmental Quality Review Act.
