ENVI 101 Lecture Notes - Lecture 25: Herbivore, Agricultural Biodiversity, Dust Bowl
29 Nov 2016
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Document Summary
Worlds fastest growing type of food production. Dominated by operations that raise herbivorous species (carp, catfish, tilapia) Soil is a key component of our planets natural capital. Soil forms through a slow process called weathering. Soil erosion: the movement of soil, particularly topsoil (nutrient rich), by the actions of wind and water. The downside of irrigation (70% of global water use) Gradual accumulation of salts in the soil from irrigation water. Lowers crop yields and can even kill plants. Affects 10% of world cropland, but projected to affect 30% by 2020. Biodiversity is threatened when forests and grasslands are replaced with croplands. Agrobiodiversity: the genetic variety of animal and plant species used on farms to produce food. Since 1900, we have lost 75% of the genetic diversity of crops. First gmo was in a tomato- flavor savor wasnt successful. America is where majority of where gmos are produced many other countries have placed bans on gmos.
