Q.Explain "Rivet Popper hypothesis".
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Start your 14-day free trial to unlock the full solution →The Rivet Popper hypothesis is an analogy proposed by Paul Ehrlich comparing species loss in an ecosystem to popping rivets off an airplane's wing — each loss adds risk, and beyond a threshold, the system collapses.
The analogy:
Imagine an airplane held together by thousands of rivets. Removing ("popping") one or two rivets at random may not noticeably affect the plane's function — it can still fly. But as more and more rivets are removed, the structure is progressively weakened. Eventually, a rivet supporting a especially critical structural point (analogous to a keystone species) is removed, and the wing — and the whole plane — fails catastrophically.
Ecological interpretation:
- Each species in an ecosystem is like a rivet; the ecosystem as a whole is like the airplane.
- The loss of a few species may seem to have little visible effect on the functioning of the ecosystem in the short term, lulling us into complacency.
- However, as biodiversity loss continues, the ecosystem becomes progressively less stable and less resilient.
- Loss of a particular keystone species (a rivet at a critical point) can trigger a sudden, disproportionate collapse of the ecosystem's structure and function, even though it is only one among many species lost.
Significance: …
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