New York Natural Heritage Program
Brackish Interdunal Swales
Brackish interdunal swale at Breezy Point in Gateway National Recreation Area. Gregory J. Edinger
System: Estuarine
SubSystem: Estuarine Intertidal

State Protection: Not Listed
Federal Protection: Not Listed

State Rarity Rank: S1S2
A State Rarity Rank of S1S2 means: Critically Imperiled or Imperiled in New York - Especially or very vulnerable to disappearing from New York due to rarity or other factors; typically 20 or fewer populations or locations in New York, very few individuals, very restricted range, few remaining acres (or miles of stream), and/or steep declines. More information is needed to assign a single conservation status.

Global Rarity Rank: G3G4
A Global Rarity Rank of G3G4 means: Vulnerable globally, or Apparently Secure -- At moderate risk of extinction, with relatively few populations or locations in the world, few individuals, and/or restricted range; or uncommon but not rare globally; may be rare in some parts of its range; possibly some cause for long-term concern due to declines or other factors. More information is needed to assign a single conservation status.


Did you know?
Brackish interdunal swales are known for their importance to wildlife. Characteristic fauna includes salt marsh mosquitoes, fiddler crabs, piping plovers, American oystercatchers, yellowlegs (during migration), and Canada geese, which use the community as a foraging ground. Eastern mud turtle and eastern spadefoot toad also reportedly use this habitat (United States Army Corps of Engineers 1996, 1999).

State Ranking Justification [-]
There are relatively few small, geographically restricted occurrences of this community. Although they are protected on public or private conservation land, they are threatened by management practices that alter natural hydrologic processes (such as breach contingency plans) and invasive species, such as common reed (Phragmites australis). The surrounding landscape is vulnerable to exotic flora invasion and urban development.

Short-term Trends [-]

Long-term Trends [-]