New York Natural Heritage Program
Rich Sloping Fen
Rich sloping fen at Malloryville Fen F.R. Wesley
System: Palustrine
SubSystem: Open Peatlands

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: G3
A Global Rarity Rank of G3 means: Either rare and local throughout its range (21 to 100 occurrences), or found locally (even abundantly at some of its locations) in a restricted range (e.g. a physiographic region), or vulnerable to extinction throughout its range because of other factors.


Did you know?
Fens influenced by calcareous bedrock can harbor an interesting group of green algae. Stoneworts (such as Chara vulgaris), are highly evolved algae that are often mistaken for vascular plants. They appear to have stems and branches, and are similar in appearance to submerged aquatic plants such as milfoil (Myriophyllum spp.), but they lack the internal water and nutrient transport structures common to all vascular plants. Stoneworts are thought to be closely related to non-vascular plants (mosses and liverworts), because the two groups have many evolutionary cytological and biochemical homologies.

State Ranking Justification [-]
There are less than one hundred occurrences statewide. Some documented occurrences have good viability and several are protected on public land or private conservation land. This community is limited to the calcareous areas of the state and is restricted to wetlands that gain most of their moisture from underground sources that flow through calcareous substrates. There are few high quality examples. Most sites are small and some are very disturbed. 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 or alteration to the natural hydrology. Total acreage is very limited and many sites are too small to be protected by New York State freshwater wetland regulations.

Short-term Trends [-]

Long-term Trends [-]