By Jonathan Yales
In 1957, a British ecologist, Charles S. Elton, gave three radio presentations entitled “Balance and Barrier.” Within a year, he had expanded these ideas into what was to become a bible for practitioners of a burgeoning new science: invasion biology.
In a tribute to those broadcasts, the Northern Research Station of the USDA Forest Service launched a six-episode series that explores biological invasions — and their repercussions — in the Midwest and the Northeast.
A biological invasion is an enormous increase in population of some kind of living organism. It happens when an organism — like an insect — arrives somewhere beyond its previous range, when it breaks out past its natural barrier, unbalancing the biological order.
Listen to, Episode 1: A Slow Explosion of Damaging Forest Insects, below:
The full six-episode season of Forestcast is published now. Listen and subscribe below.
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