New York Natural Heritage Program
Calcareous Talus Slope Woodland
Calcareous Talus Slope Woodland Timothy G. Howard
System: Terrestrial
SubSystem: Barrens And Woodlands

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?
What is talus? Talus, or scree, is a steep slope usually found at the base of a mountain. The block size of the talus is strongly influenced by the type of rock forming the cliff face and rate of erosion. Shale talus or rapidly eroding sandstone forms unstable, small, loose talus, eroded from the mountain's face. The unstable nature of shale results in uneven slopes and many rock crevices. Other talus, such as hard dolostone caprock, produces stable, very large talus that provides habitat for much larger organisms.

State Ranking Justification [-]
There are several hundred occurrences statewide. Some documented occurrences have good viability and many are protected on public land or private conservation land. This community is limited to areas with calcareous talus across the state, and includes several high quality examples. The current trend of this community is probably stable for occurrences on public land, or declining slightly elsewhere due to moderate threats related to development pressure.

Short-term Trends [-]

Long-term Trends [-]