Eastern red cedar (Juniperus virginiana) is dioecious. This means that some trees are female and some trees are male. The male trees have pollen-producing flowers and the female trees produce the familiar light blue "juniper berries." These "berries" are technically cones with fleshy blue scales and a white waxy cover, giving the them an overall sky-blue color. They are a favorite food of cedar waxwings and other birds, which disperse the seeds to other locations.
There are very few occurrences of this community in New York. One documented occurrence has fair viability and is protected on private conservation land. In New York, calcareous red cedar barrens are apparently strongly correlated with the presence of Stockbridge Marble bedrock and the Farmington-Rock soil unit. There are no large, high quality examples known in the state. The current trend of this community is probably stable for the one occurrence on private conservation land, and very likely declining elsewhere due to moderate threats related to fire suppression, invasive species, and development pressure.
The number and acreage of calcareous red cedar barrens in New York have probably remained stable or have declined in recent decades with one example protected within a preserve. The status of other examples is unknown, but likely declining due to conversion to agricultural purposes or other development. In addition, fire suppresion and the subsequent invasion by woody species has resulted in a decline of the size of occurrences.
The number and acreage of calcareous red cedar barrens in New York have probably had a large decline from historical numbers, likely correlated with the onset of agricultural and residential development. There were probably very few historical occurrences.
The main threats to calcareous red cedar barrens are fire suppression/woody plant invasion, non-native invasive species, and agricultural or other development. The most invasive plants associated with this community include buckthorn (Rhamnus cathartica), common barberry (Berberis vulgaris), Oriental bitter-sweet (Celastris orbiculatus), and spotted knapweed (Centaurea biebersteinii).
Increase and/or maintain the size of existing calcareous red cedar barrens by increasing patch size where appropriate, by "softening" the abrupt forest edges by maintaining a native shrub transition zone. Improve the condition of existing calcareous red cedar barrens by reducing and/or eliminating invasive species (including invasive native woody species), minimizing trail network and clearly marking existing trails, and developing and implementing a prescribed burn plan at appropriate sites. Improve the landscape context by encouraging surrounding landowners to establish natural buffers and restore natural corridors to other larger natural landscape blocks (Edinger 2003).
Soils are very thin within and around this community, and the effect of clearing and construction on soil retention and erosion must be considered prior to any development activities. These soils are circumneutral, and any excessive soil enrichment contamination (e.g., from septic leach fields or fertilized lawns) of this community can alter community structure and function. The open structure of this community is maintained by fire and presents a fire hazard to existing and proposed development. Unprotected structures located within or near this community are more susceptible to damage from fire.
Given the apparent strong correlation of calcareous red cedar barrens with Stockbridge Marble and the Farmington-Rock soil unit, a systematic search is needed to find where these two layers intersect in eastern New York (Edinger 2003). This search could be augmented with historical specimen data (e.g., Bouteloua curtipendula locations) to narrow the field of search. If these and other layers, such as elevation, aspect, slope, convexity were combined using GIS it may be possible to build a powerful predicative model to find more examples of calcareous red cedar barrens.
Determine the optimal fire regime for this community. The effect of prescribed burning needs to be evaluated.
Currently limited to one occurrence in Dutchess County, but may extend north and south following the extent of Stockbridge Marble bedrock in eastern New York.
This community has a scattered distribution associated with calcareous bedrock (typically marble) that includes western Connecticut, eastern New York, northern New Jersey, and central Pennsylvania.
This is a small-patch community with dry, south-facing to southwest-facing slopes of calcareous bedrock that support stunted, sparse woodlands with small grassland openings characterized by little blue stem (Schizachyrium scoparium) and side-oats grama (Bouteloua curtipendula). Red cedar (Juniperus virginiana) is usually present as a stunted, sparse canopy. Shrubs are sparse, but when present may include hackberry (Celtis occidentalis). The herbaceous composition is quite variable and diverse but often includes such species as bristle-leaf sedge (Carex eburnea), thimbleweeds (Anemone virginiana), switch-grass (Panicum virgatum), Indian grass (Sorghastrum nutans), Pennsylvania sedge (Carex pensylvanica), green milkweed (Asclepias viridiflora), whorled milkweed (Asclepias verticillata), and creeping muhly (Muhlenbergia sobolifera).
This community appears to be associated with Stockbridge Marble bedrock and the Farmington-Rock soil unit in eastern NY. Sparse woodlands with stunted red cedar and marble outcrops with clump-forming grasses are characteristic of this community.
Known examples of this community have been found at elevations between 400 feet and 540 feet.
Late summer is a good time to see side-oats grama (Bouteloua curtipendula var. curtipendula) in the grassy openings of the calcareous red cedar barrens.
This New York natural community encompasses all or part of the concept of the following International Vegetation Classification (IVC) natural community associations. These are often described at finer resolution than New York's natural communities. The IVC is developed and maintained by NatureServe.
This New York natural community falls into the following ecological system(s). Ecological systems are often described at a coarser resolution than New York's natural communities and tend to represent clusters of associations found in similar environments. The ecological systems project is developed and maintained by NatureServe.
Betula papyrifera (paper birch)
Fraxinus americana (white ash)
Ostrya virginiana (hop hornbeam, ironwood)
Celtis occidentalis (northern hackberry)
Cornus alternifolia (pagoda dogwood, alternate-leaved dogwood)
Corylus americana (American hazelnut)
Quercus prinoides (dwarf chestnut oak)
Anemone cylindrica (long-headed anemone)
Anemone virginiana (tall anemone, thimbleweed)
Asclepias verticillata (whorled milkweed)
Asclepias viridiflora (green milkweed)
Carex eburnea (bristle-leaved sedge)
Carex pensylvanica (Pennsylvania sedge)
Muhlenbergia sobolifera (rock muhly)
Packera aurea (golden ragwort)
Packera obovata (round-leaved ragwort)
Panicum virgatum (switch grass)
Pellaea atropurpurea (purple cliff-brake)
Pycnanthemum virginianum (Virginia mountain-mint)
Solidago bicolor (silver-rod)
Sorghastrum nutans (Indian grass)
Sporobolus compositus var. compositus (rough dropseed)
Triosteum aurantiacum (orange-fruited horse-gentian)
This figure helps visualize the structure and "look" or "feel" of a typical Calcareous Red Cedar Barrens. Each bar represents the amount of "coverage" for all the species growing at that height. Because layers overlap (shrubs may grow under trees, for example), the shaded regions can add up to more than 100%.
Edinger, G. J., D. J. Evans, S. Gebauer, T. G. Howard, D. M. Hunt, and A. M. Olivero (editors). 2014. Ecological Communities of New York State. Second Edition. A revised and expanded edition of Carol Reschke’s Ecological Communities of New York State. New York Natural Heritage Program, New York State Department of Environmental Conservation, Albany, NY. http://www.dec.ny.gov/docs/wildlife_pdf/ecocomm2014.pdf
Edinger, Gregory J. 2003. Nellie Hill: A calcareous red cedar barrens. Assessment and classification of the red cedar communities at Nellie Hill, Dutchess County, NY. A report prepared for the Eastern New York Chapter of The Nature Conservancy. New York Natural Heritage Program, New York State Department of Environmental Conservation. Albany, NY. 40 pp. plus appendices.
Edinger, Gregory J., D.J. Evans, Shane Gebauer, Timothy G. Howard, David M. Hunt, and Adele M. Olivero (editors). 2002. Ecological Communities of New York State. Second Edition. A revised and expanded edition of Carol Reschke's Ecological Communities of New York State. (Draft for review). New York Natural Heritage Program, New York State Department of Environmental Conservation. Albany, NY. 136 pp.
Grossman, D. H., K. Lemon Goodin, and C. L. Reuss, editors. 1994. Rare plant communities of the conterminous United States: An initial survey. The Nature Conservancy. Arlington, VA. 620 pp.
New York Natural Heritage Program. 2020. New York Natural Heritage Program Databases. Albany, NY.
Reschke, Carol. 1990. Ecological communities of New York State. New York Natural Heritage Program, New York State Department of Environmental Conservation. Latham, NY. 96 pp. plus xi.
Information for this guide was last updated on: April 25, 2019
Please cite this page as:
New York Natural Heritage Program. 2020. Online Conservation Guide for Calcareous red cedar barrens. Available from: https://guides.nynhp.org/calcareous-red-cedar-barrens/. Accessed January 28, 2020.