Two large patches of salt marsh comprise a majority of this IBA located at the mouth of the Warren River whereupon the river discharges to Narragansett Bay. One marsh is located on the west side of the river mouth at Rumstick Point, the other on the east side of the river mouth at Jacob's Point. The marsh at Rumstick Point is approximately 15.8 hectares (40 ac). The marsh at Jacob's point is approximately 19 hectares (47 acres). The Marsh at Jacob's point was the subject of recent restoration efforts that have restored tidal inundation and thus helped to reduce the extent of Common Reed invasion into the saltmarsh. Additional marsh is located at the northern limit of the IBA in the vicinity of Adams Point.

{link:For IBA map, click here.|http://www.audubon.org/bird/iba/maps/RI/RI3509m_RumstickJacobs.pdf}

Ornithological Summary

The marshes within this IBA support a population of Saltmarsh Sharp-tailed Sparrows that may be increasing due to the restoration efforts at Jacob's Point. Restoration efforts at Jacob's Point has focused on restoring tidal flow through a culvert that had formerly fell into disrepair and became clogged. Tidal restoration has helped to limit the extent of common reed invasion into the salt marsh from adjacent freshwater wetlands.

Conservation Issues

The marsh at Jacob's point is bordered by the East Bay Bike path and the Audubon Society of Rhode Island?s education center at 1401 Hope Street in Bristol, RI. Tidal flow into the interior of the marsh was restricted by an earthen footpath from the mainland to the upland - which divided the marsh into northern and southern portions. This footpath restricted the tidal flow between the two portions of the marsh. Eventually the collapse of these stone culverts caused the tidal flow between the two marsh portions to essentially cease.

The resulting flow restriction allowed extensive invasion of Common Reed (Phragmites australis), an invasive marsh grass, out over the former salt marsh. With project funding provided by the National Oceanic and Atmospheric Administration (NOAA), Restore America's Estuaries, and Natural Resources Conservation Service, restoration activities were conducted to return tidal flows to the marsh.

Ownership

Approximately half (50.4%) of the IBA is owned by private individuals or entities. The Warren Land Conservation Trust owns 28.2% of the IBA. A significant portion (14.2%) of the IBA is open water. The Town of Barrington owns 1.4% of the IBA, while the Barrington Land Conservation Trust owns 0.2%. The Audubon Society of Rhode Island (ASRI) owns a portion of the IBA at Jacob's point.

Habitat

The Jacob?s Point marsh includes both fresh and salt marsh areas. Salt marsh areas are dominated by salt meadow grass (Spartina patens), while freshwater areas are dominated by common reed (Phragmites australis), with some inclusions of cattails (Typha lattifolia) and purple loosestrife (Lythrum salicaria). Open water areas are also prevalent within the IBA, as are stretches of sand/shell beaches and remnant coastal dune.

Land Use

Approximately one third of the IBA is composed of lands preserved for conservation either through local land trusts or via the Audubon Society of Rhode Island. Approximately half of the land area within the IBA lies in private ownership but is undeveloped. This includes the lands not only at both Rumstick and Jacobs point but also in the vicinity of Adams point just to the north on the west side of the Warren River.

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