NATS 1840 Study Guide - Final Guide: Mercantilism, Topographic Map, Flash Point
7 Apr 2014
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Nats 1840 lecture 1 anthropomorphic extinctions in the late quarternary. Many large mammals became extinct in the last 50 000 years ( near time , quarternary period) Approximately half of 200 genera of large mammals (100 lb +) lost. Almost all extinctions of wild animals in last 50,000 anthropogenic. Extinction not only recent, not solely due to advanced science or technology. Human migration to new continents, islands, large and small mammals and birds. Overkill thesis, excessive predation, introduction of predators, competitors and disease vectors. Radio-carbon dating within a few hundred years, sudden or gradual extinction. No direct evidence for human hunting 50,000 years ago. Responsibility of ancient peoples for extinctions, global involvement. Realistic idea of human impact, sympathy with large mammals. Growing of crops in large amounts and the domestication of animals, used for leather, body parts, food etc. must save water and irrigate crops throughout year to allow to grow: artificial irrigation.
