👉 In ecology, a semi-extinction is a state of being in which a species has experienced a reduction in population size so severe that it cannot be restored. This can occur due to a variety of factors such as habitat loss or pollution, and may not recover fully until environmental conditions improve. The term "semi-extinction" was introduced by the British biologist Richard Owen in 1968, who described the phenomenon as a temporary state where some species are unable to survive without human intervention. This
