New York City, the Lower Hudson River, and Jamaica Bay
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3.4 New York City, the Lower Hudson River, and Jamaica Bay Author: Elizabeth M. Strange, Stratus Consulting Inc. Species and habitats in the region encompassing such as beach nourishment, dune construction, New York City, the lower Hudson River, the and vegetation wherever possible. Planners East River, and Jamaica Bay are potentially at expect that the only sizeable areas in the New risk because of sea level rise. Although the York City metropolitan area that are unlikely to region is one of the most heavily urbanized areas be protected are portions of the three Special along the U.S. Atlantic Coast, there are Natural Waterfront Areas (SNWAs) designated nonetheless regionally significant habitats for by the city: Northwest Staten Island/Harbor fish, shellfish, and birds in the area, and a great Heron SNWA; East River–Long Island Sound deal is known about the ecology and habitat SNWA; and Jamaica Bay SNWA. needs of these species. TIDAL WETLANDS Based on existing literature and the knowledge of local scientists, this brief literature review Staten Island. Hoffman Island and Swinburne discusses those species that could be at risk Island are National Park Service properties lying because of further habitat loss resulting from sea off the southeast shore of Staten Island; the level rise and shoreline protection (see Map 3.2). former has important nest habitat for herons, and 252 Although it is possible to make qualitative the latter is heavily nested by cormorants. The statements about the ecological implications if Northwest Staten Island/Harbor Herons SNWA sea level rise causes a total loss of habitat, our is an important nesting and foraging area for 253 ability to say what the impact might be if only a herons, ibises, egrets, gulls, and waterfowl. portion of the habitat is lost is more limited. A The so-called Harbor Herons Complex includes total loss of habitat might be expected if shores three island heronries of regional significance, are protected with hard structures and the including Shooters Island, Pralls Island, and Isle wetlands are unable to keep pace with sea level of Meadows (see subsequent section on islands). rise. Several tidal emergent, salt, brackish, and fresh water marshes provide foraging areas for the Most shorelines in the New York metropolitan birds of the island heronries, including Arlington area are heavily modified. Because the remaining coastal land is at a premium, planners indicate that most of the shoreline is almost certain to be protected. The remaining undeveloped land along the shore continues to be developed and armored.251 Where protection occurs, New York City’s Waterfront Revitalization Program (WRP) requires the use of nonstructural alternatives 251George Frame, National Park Service, in email entitled Comments on NYHarbor&RaritanBay papers EPA feb07, to Karen Scott, EPA, 2/20/07, suggests that “many urban planners 252 are not preserving undeveloped lands along the shores of the George Frame, 2/20/07 email (see note 251). 253 estuary; even today they are building and hardening in many USFWS, 1997, p. 578 in Arthur Kill Complex, Complex #18 areas.” (see note 172). [ SECTION 3.4 223 ] Marsh, Sawmill Creek Marsh, Gulfport Marsh, network of marshes behind Grassy Point near 258 Merrill’s Marsh, Old Place Creek, Neck Creek Haverstraw Bay. 254 Marsh, and Fresh Kills. With the exception of Fresh Kills, shoreline protection is considered Piermont Marsh is a 411.6 ha (1,017 acre) almost certain in these areas. Loss of these brackish wetland on the western shore of the marshes could have a significant negative impact lower Hudson River just below the Tappan Zee on the island heronries because of a lack of Bridge, in the town of Orangetown, in Rockland alternative foraging sites nearby. County.259 The New York State Department of The Fresh Kills wetland system is one of the State has designated the marsh a Significant largest tidal wetland systems in the region, Coastal Fish and Wildlife Habitat, and it has covering an estimated 405 ha (1,000 acres).255 been designated part of the Hudson River Local planners expect that these wetlands will National Estuarine Research Reserve by the probably be allowed to respond naturally to sea National Oceanic and Atmospheric level rise, but migration may not be possible Administration and the New York State Department of Environmental Conservation because of the relatively steep slopes that have 260 formed near the shore as a result of landfilling (NYDEC). activities. Piermont Marsh is dominated by common reed Manhattan. Most of the shoreline of Lower and narrow-leaved cattail, along with some salt Manhattan and the Battery has been bulkheaded marsh species that include smooth cordgrass, and filled. An exception is the natural shoreline salt-meadow cordgrass, and spike grass, making and wetlands at the mouth of the Harlem River at it the location of the northernmost occurrence of 256 New York City’s Inwood Hill Park. The park salt marsh species on the Hudson. Breeding birds contains low salt marsh and a broad mudflat that known to use the marsh for nesting include runs from the marsh to the channel of the Harlem relatively rare species such as Virginia rail, River Ship Canal. Great blue herons are found swamp sparrow, black duck, least bittern, and along the flat in winter and snowy and great sora rail. A small number of osprey sometimes 257 egrets are common from spring through fall. gather in the marsh, particularly during spring migration. Anadromous and freshwater fish use The Lower Hudson River. Although the tidal the marsh’s tidal creeks as a spawning and Hudson River extends upstream to the dam at nursery area. Killfish, mummichog, fiddler crab, Troy, New York State’s tidal wetland regulations and blue crab use shallow marsh areas. apply to the Hudson River shoreline only up to Diamondback terrapin, a federal species of the Tappan Zee Bridge. This is the estuarine concern, reportedly nest in upland areas along 261 portion of the tidal river. Along this stretch of the the marsh. river there is relatively little marsh, with the exception of brackish marshes at the mouth of Jamaica Bay, located between the boroughs of the Croton River, in Piermont Marsh, and in a Brooklyn and Queens, is the largest area of protected wetlands in a major metropolitan area along the U.S. Atlantic Coast. The bay includes 254 USFWS, 1997, p. 579 in Arthur Kill Complex, Complex #18 258USFWS, 1997, p. 631 in Lower Hudson River Estuary, (see note 172). Complex #21 (see note 172). 255USFWS, 1997, p. 580 in Arthur Kill Complex, Complex #18 259Fact sheet on Piermont Marsh Component of the Hudson River (see note 172). Reserve by the Hudson River Reserve Program, National 256USFWS, 1997, p. 630 in Lower Hudson River Estuary, Estuarine Research Reserve System. Accessed December 4, 2007 Complex #21 (see note 172). at:http://nerrs.noaa.gov/HudsonRiver/PiermontMarsh.html. 257Fact sheet by New York City Department Of Parks and Recreation, Inwood Hill Park—Salt Marshes in New York City 260USFWS, 1997, pp. 629, 633 in Lower Hudson River Estuary, Parks. Accessed December 4, 2007 at: Complex #21 (see note 172). http://www.nycgovparks.org/sub_your_park/historical_signs/hs_ 261USFWS, 1997, p. 633 in Lower Hudson River Estuary, historical_sign.php?id=12864. Complex #21 (see note 172). [ 224 MI D - AT L AN T I C C O AS T AL H AB I T AT S & E N V I R O N M E N T AL I M P L I C AT I O N S O F S E A L E V E L R I S E ] the Jamaica Bay Wildlife Refuge,262 which has found in these marshes.267 The nearby Four been protected since 1972 as part of the Jamaica Sparrow Marsh is the other remaining salt marsh Bay Unit of the Gateway National Recreation in this part of the bay. It is a particularly Area, administered by the National Park Service. noteworthy as an undisturbed nesting habitat for The refuge includes numerous salt marsh islands four native species of sparrows that are in that are sheltered from the Atlantic Ocean by the decline, the sharp-tailed, seaside, swamp, and Rockaway Peninsula. song sparrows, and as a stopover site for some 326 species of migrating birds. Several species Despite extensive disturbance from dredging, of ducks, gulls, and wading birds also nest in filling, and development, Jamaica Bay remains Four Sparrow Marsh and feed on marsh one of the most important migratory shorebird mollusks and crustaceans.268 stopover sites in the New York Bight region. 263 The bay provides overwintering habitat for brant, Because of its importance as an area of mallards, American black duck, canvasback significant biodiversity and its uniqueness as a duck, and other waterfowl, and intertidal wildlife sanctuary in a highly developed urban mudflats for foraging migrants such as black setting, planners expect that Jamaica Bay’s skimmer, plovers, and knots.264 The refuge and wetlands will be allowed to respond naturally to Breezy Point, at the tip of the Rockaway sea level rise. However, wetlands in some parts Peninsula, support populations of 214 species of the bay are currently showing substantial that are state or federally listed or of special losses. Researchers studying the salt marsh emphasis, including 48 species of fish and 120 islands near the John F. Kennedy International species of birds. These areas combined have Airport (including Yellow Bar Hassock, Black been designated as a Significant Coastal Fish and Wall Marsh, Big Egg Marsh, East High Meadow Wildlife Habitat by the New York State Marsh, Elders Point Marsh, and Jo Co Marsh) Department of State and as a Critical estimated that marsh loss in the area averaged 12 265 Environmental Area by the NYDEC.