Home Garden

Trees in the Pine Barrens

The New Jersey Pine Barrens, or Pinelands, is the largest connected area on the Eastern seaboard, covering more than 1 million acres in southern and central New Jersey --- nearly one quarter of the state's total land area. A number of endangered plant and animal species exist within the Pine Barrens. The habitat for these species is shaped by the dynamic relationship between soil, forest fires, and fire-adapted forest vegetation.
  1. Sand and Fire

    • Serotinous pine cones open from the heat of a forest fire.

      The Pine Barrens was named for its sandy, acidic, nutrient-deficient soil. The pitch pine species that dominates the Pine Barrens has developed cones that open in response to intense heat, scattering seeds on the nutrient-rich ashes left by the fire. Another fire-adaptive characteristic is to drop lower branches, creating a canopy high enough to resist surface fires. Fire clears competing vegetation and brings in the sunlight that pines need.

    Pine Communities in the Pine Barrens

    • Pygmy forests in the Pine Barrens may have burned every 10 to 30 years.

      The Pine Barrens is home to three main pine-dominated habitats. Pine-oak forest is the tallest, with a tree layer consisting of post oak and blackjack oak. The shortest forest type is the pygmy forest, a scrub species of pitch pine and blackjack oak, generally less than 10 feet tall. In between the tall and short extremes, the pine-shrub oak forest has pitch pines reaching heights of more than 30 feet.

    Cedar and Maple

    • Red maple could eventually displace the Atlantic white cedars, shading the forest floor.

      Cedar and red maple swamps border drainage courses in the Pine Barrens. White cedar needs open, sunlit conditions for germination and growth; fire suppression may result in the displacement of white cedar by shade-tolerant red maple. The tannic acid present in Atlantic white cedar, iron in the streams and acidic waters contributed to the formation of a number of unique plant and animal communities. According to the New York Natural Heritage Program, the cedar swamps are the second rarest Pine Barrens ecological community in the state; the rarest is the dwarf pine plains.

    Changing Conditions

    • Suppressing forest fires means a different environment is created for plants and wildlife.

      Only about 10 percent of the original extent of the Pine Barrens remains as intact habitat. Changes in vegetation cover have an impact on habitat and the wildlife that depends on it. There are 850 species of plants found in the Pines, including the rare curly grass fern, and broom crowberry. Another special feature is range overlaps, where 109 southern plants and 14 northern plants reach their geographic limits.