Quote:
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"Instead there turns out to be a remarkable scarcity of very short plants in very warm, wet, productive environments like rainforests."
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A young northern forest has trees so close that it is too dark to have much growing under it. As the forest increases in size, the density of trees decreases and shorter plants such as ferns begin to grow under the canopy.
There are so many different measures of abundance that I wonder what was done.
