Ancient forests do more than grow trees; they pump the planet's water
In short: Most people view old-growth forests as static museums of nature. In reality, they are dynamic engines of climate regulation. From driving global wind patterns to creating complex soil systems through decay, these mature ecosystems perform vital planetary work that younger, managed forests simply cannot replicate.
The transition of New England's landscape provides a unique window into forest succession. Since the mid-1800s, much of the region's second-growth forest has been on a trajectory toward becoming old-growth following the abandonment of cleared agricultural lands. However, this natural progression faces modern hurdles; increased pressure to manage these lands for specific human uses threatens to stall their return to a wild, self-sustaining state. This shift highlights how human land-use history directly shapes current biodiversity. The abandonment of farms allows for a slow return to natural complexity.
At the heart of why these forests matter is the 'Biotic Pump' theory, explained by atmospheric physicist Anastassia Makarieva. This concept describes how mature, native forests actively regulate the Earth's hydrologic cycle and wind patterns. The forest creates a feedback loop: trees release moisture into the atmosphere, which influences local weather and pulls in more moist air, effectively 'pumping' water across vast distances to sustain the very ecosystems that produce it. Makarieva notes that this process is fundamental to global climate stability. These native systems are essential for maintaining the moisture balance required by life.
On a smaller scale, the health of these forests relies on what environmental scientist Margery Winters calls 'morticulture.' This is the ecological role played by fallen logs and hollow trees. Rather than being waste, these dead elements are essential for forest ecology and soil health, providing habitats and nutrients that define a truly wild system. Senior Ecologist Ed Faison emphasizes that these older forests possess distinct ecological significance that distinguishes them from younger, more uniform timber stands. Faison highlights how these wilder spaces differ from managed timberlands. The presence of decay creates a complex architecture for forest inhabitants.
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- Summary by Intellect · source: The Return of Old Growth Forests
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