New York Natural Heritage Program
Dwarf Shrub Bog
Dwarf Shrub Bog Timothy G. Howard
System: Palustrine
SubSystem: Open Peatlands

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: G4
A Global Rarity Rank of G4 means: Apparently secure globally, though it may be quite rare in parts of its range, especially at the periphery.


Did you know?
Cranberries (Vaccinium macrocarpon, V. oxycoccos) grow wild in dwarf shrub bogs. They also grow on farms in the northeastern states, including New York, in settings that mimic bogs. The surface of a dwarf shrub bog, as with other bogs, is predominately peat on top of silt and clay. Commercial cranberries grow on low-lying branches in impermeable beds layered with sand, peat, gravel, and clay. They need an inch of water a week to grow. Growers use water to protect cranberries from frost during cold months and hot weather in the summer. Commercial bogs use a system of wetlands, uplands, ditches, flumes, ponds, and other water bodies.

State Ranking Justification [-]
There are several hundred occurrences statewide. Many documented occurrences have good viability and are protected on public land or private conservation land. This community has statewide distribution, and includes several very large, 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 or alteration to the natural hydrology. This community has declined moderately to substantially from historical numbers likely correlated with peat mining and excessive clearing/development of the surrounding landscape.

Short-term Trends [-]

Long-term Trends [-]