GEOG 106 Lecture Notes - Lecture 3: Shifting Cultivation, Overgrazing, Soil Fertility
Document Summary
Many species of flora and fauna disappeared shortly after the arrival of humans. To burn vegetation and produce grasslands for grazing herbivore. Pleistocene overkill (between 12,000 and 10,000 years b. p. ) About 200 large animals became extinct, decline and loss of herbivore. Agriculture developed independently in several areas around the world at the same time. How to know the existence of agriculture at a location: species outside their normal range, in suddenly higher numbers than normal, an unnatural sex ratio, an unexplainable change in appearance of the species. The reasons of transition of agriculture: growing population, external factors like climate change. Scientist can only speculate the domestication of plants. The first animal to have been domesticate are wolf (12000 to 22000 or more years ago) Tracking, herding, guarding, and eating (if at pinch) Some animals (auroch) became extinct due to inter-breeding with the domesticated animals. Pastoral rotational grazing of domesticated herbivore.
