Ferry Point Park
Schley Ave., LI Sound bet. Westchester Creek and Balcom Ave.
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Ferry Point Park - Salt Marshes in New York City Parks
Salt marshes play a critical role in the support of human life, acting as natural filtration systems by trapping pollutants that would otherwise contaminate our bays and oceans. Salt marshes, including those at Ferry Point Park, have the ability to absorb fertilizers, improve water quality, and reduce erosion. They are also among the richest wildlife habitats.
When the last of the glaciers melted 7,000 years ago, the oceans rose to their present levels. Sediments washed from the land were deposited offshore in narrow sandy strips, forming long islands parallel to the shoreline. These barrier beaches received the pounding surf on their ocean side, but had calm, protected bays behind their landward shores. While the waters were calm enough for vegetation to take root, the presence of saltwater made survival difficult. One species, however, saltmarsh cordgrass (Spartina alterniflora), was able to colonize the flat expanses of sand and silt, which were covered twice a day by the ocean’s tides. Today, the grass is still found along the Atlantic coast.
As this specialized grass spreads, its stems trap floating debris. Sediments and particles of decaying matter slowly build up, forming nutrient-rich mud. This mud, called detritus, supports life on the marsh. It is the basis of a complex food web in which energy is passed from one organism to another. The fiddler crab (Uca pugnax) and ribbed mussel (Geukensia demissa) have developed a mutually beneficial relationship with the cordgrass. While the crabs and mussels benefit from feeding on decaying matter trapped within cordgrass roots, cordgrass gains from the fiddler’s burrowing, which aerates the soil, and the mussel’s excretion, which provides necessary nitrogen.
At the end of each season, the cordgrass dies, creating a spongy peat. Each year’s peat layer raises the surface of the marsh, enabling it to colonize new territory. A variety of plants with less salt tolerance can colonize the peat, as it is out of the range of most of the high tides. This causes the formation of two separate plant communities, the intertidal marsh and the salt meadow. A third type of salt marsh community is the mudflat. Each of these communities has its own distinctive vegetation, insects, fish, birds, and mammals that have adapted to survive in a saltwater environment. While salt marshes do not have a very wide variety of species, the volume of life present is remarkable.
Ferry Point Park is divided in half, with the east side a common reed (Phragmites australis) plantation and the west a landscaped parkland, all growing on landfill. Pioneering cottonwoods (Populus), cherries (Prunus), birches (Betula,), and willows (Salix) have broken through the reeds in the east. The manicured parkland flanking Westchester Creek’s outlet has grown more wild. High grasses and herbs, numerous saplings, and unpruned hornbeam trees (Carpinus) provide excellent wildlife habitat. Bits of salt marsh and beach hug the park’s shores. Uncommon winter birds, like the snowy owl (Nyctea scandiaca), can be observed at Ferry Point Park.
Since industrialization, human activity has destroyed many marshes. Where marshes are disturbed, reeds often grow in place of cordgrass. Since reeds do not decompose into as nutritious a substance as cordgrass, a reed marsh does not contribute as much to coastal ecosystems as a cordgrass marsh. In the last 200 years, humans have also filled over 80 percent of the city’s original salt marshes for construction. While recent conservation efforts have improved the condition of marshes, this valuable ecosystem continues to disappear from the City at an alarming rate.
Directions to Ferry Point Park
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- Ferry Point Park - Salt Marshes in New York City Parks