New York Natural Heritage Program
Floodplain Grassland
Floodplain grassland community on the Delaware River Gregory J. Edinger
System: Terrestrial
SubSystem: Open Uplands

State Protection: Not Listed
Federal Protection: Not Listed

State Rarity Rank: S3
A State Rarity Rank of S3 means: Typically 21 to 100 occurrences, limited acreage, or miles of stream in New York State.

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?
Floodplain grasslands have the “BIG FOUR” grasses of the tallgrass prairie that once stretched from Minnesota to Texas: big bluestem (Andropogon gerardii), Indian grass (Sorghastrum nutans), switch grass (Panicum virgatum), and little bluestem (Schizachyrium scoparium). At almost 40,000 acres, the largest protected remenant of tallgrass prairie in world can be seen at the Joseph H. Williams Tallgrass Prairie Preserve in Oklahoma.

State Ranking Justification [-]
There are an estimated 20 to 80 occurrences statewide. Very few documented occurrences have good viability and very few are protected on public land or private conservation land. This community is limited to the upper reaches of large rivers throughout upstate New York, north of the Coastal Lowland ecozone, and there are only a few good quality examples in New York. The current trend of this community is probably stable for occurrences on public land or private conservation land, or declining slightly elsewhere due to moderate threats that include shoreline development (especially roads and bridges) and invasive species.

Short-term Trends [-]

Long-term Trends [-]