GEOL 103 Study Guide - Final Guide: Minimum Viable Population, Introduced Species, Ecos
Document Summary
The current extinction rate is 36,000x above the natural rate. Loss is bad for farming: loss of future food species (less than 1% of edible plants are now grown as crops). We have a moral obligation to the plants and animals that have rights. Local extinction- loss of a local population (extirpation) can be reversed by. Global extinction- loss of a species, this is no reversible, at least by natural means. Over 99% of extinct insects and plants were lost before they were. 7% of land area covered by rainforests: 50% are gone, 75% of species live in rainforest. 1/25 rule: only 1% of species have gone extinct since 1600, but 25% are threatened. Amphibians are hit hard because they live in two environments. Tn has the most endangered species than any other none coastal state. Kudzoo, python- introduced species with no natural predators. Traits that promote extinction: specialization (especially diet), rate, large size, slow reproduction, behavior non-adaptive around humans.
