Wednesday, May 27, 2020

Pygmy Pines Thrive in a Fire-Prone Pine Barren Ecosystem



Based in Westhampton Beach, New York, Matthew Beckerle worked as a showroom manager and yard foreman at Beckerle Lumber for nearly 40 years. An outdoor enthusiast, Matthew Beckerle enjoys excursions to natural reserves such as the Quogue Wildlife Refuge.

Some of the most unique aspects of the 300-acre New York refuge are rare dwarf/pygmy pines that inhabit a pine barren ecosystem. Long-lived but growing to maturity much smaller than normal trees, pygmy pine trees are hypothesized to have a symbiotic relationship with fire.

The evolutionary niche of the pines reflects a habitat in a dry, windy, raised area that does not have lakes, rivers, and other natural breaks to prevent fire spread. Traditional trees and plants regularly burn down, which creates a nutrient-rich layer of ashy soil that allows life to replenish.

One theory is that the diminutive pygmy trees have a deep pool of clay soil, rich in nitrogen and phosphorous, to draw from. At the surface level, the trees are periodically cut back by the fire, which has a bonsai-like impact on stunting growth. However, with carbohydrates stored in the root systems, they readily sprout back after a fire and grow again. Because it takes time for this underground store of nutrients to replenish, the trade-off is one of endurance for height.