Ecological threshold can be described as the point at which a relatively small change in external conditions causes a rapid change in an ecosystem. When an ecological threshold has been passed, the ecosystem may no longer be able to return to its state. The trespassing of ecological threshold often leads to rapid change of ecosystem health.
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Famous quotes containing the words ecological and/or threshold:
“It seems to me that there must be an ecological limit to the number of paper pushers the earth can sustain, and that human civilization will collapse when the number of, say, tax lawyers exceeds the world’s total population of farmers, weavers, fisherpersons, and pediatric nurses.”
—Barbara Ehrenreich (b. 1941)
“I had a good talk with Alcott this afternoon. He is certainly the youngest man of his age we have seen,—just on the threshold of life. When I looked at his gray hairs, his conversation sounded pathetic; but I looked again, and they reminded me of the gray dawn.”
—Henry David Thoreau (1817–1862)