BIOL 350 Lecture Notes - Lecture 4: Global Warming, Overfishing, Aquifer
13 Oct 2016
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Document Summary
We are taking nutrients and not replenishing it: naturally, plants and animals die and decompose back into soil, for agriculture: Only one type of life (crop), kill everything else. Nutrient loss of soil: from harvest and erosion. Kills much more: loss of biodiversity. See land about salination and aquifer depletion. Farming is driven by oil aka fossil fuels. Increased populations create higher demand pushing limits of soil and maximizing land: food. Malnourished population still increasing: malnourishment correlated with developing/growing populations. Commodity in demand, price going up past 15 years: amount of arable land peaked, water depletion for irrigation. From glaciers: rising energy prices, land being used for bio-fuels instead of food, falling pollinator populations. Pesticides and pollution: water shortage, see food shortage cycle on onq, global warming. 1 deg increase, decreases grain yields by. Seed stock: previously, 90% of stored seeds were abandoned. Wanted only highest yielding crops: now: saving seeds from every single species.
