Subjective Type

What is the green world hypothesis?

Solution

The green world hypothesis posits that the balance of predatory carnivores and herbivores prevents the destruction of plant life.
Explanation:
First propounded in $$1960$$ by United States scientists Nelson Hairston, Fredrick Smith and Lawrence Slobokdin, the hypothesis states that predators more than plant defences are responsible for limitin herbivore spread which would, in turn, lead to large scale destruction of plant life.
While this is difficult to test in the wild life because of the impossibility of removing all predators from a test site, this was proved at a Venezuelan hydroelectric project site where the flooding caused by the dam resulted in several islands being formed. On those where predators were absent, a larger destruction of green cover was detected than on those islands or mainland patches where herbivores and predators co-existed.

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