ES101 Study Guide - Final Guide: Genuine Progress Indicator, Selective Breeding, Reproductive Isolation
Document Summary
Chapter 4: section 4. 7 (we stopped at 4. 5 for the midterm) Landscape modification and hardening: of surface of earth. Modification to other cycles that affect water. Produce large amounts of co2 from fossil fuel consumption. Fossil fuel consumption (release of nitric oxide leads to acid rain) Release of stored nitrogen in plants (deforestation, removal of grazing lands, etc. ) Excess nitrogen benefits certain species (e. g, algae and weed species in lake ecosystems) No added to atmosphere- fel- nitrogen dioxide and nitric acid- acid rain. Livestock waste and inorganic fertilizers- nitrous oxide to atmosphere- greenhouse gas- global warming. Destruction of forest, wetlands, and grasslands - nitrogen stored in system released. Addition of nitrogen as fertilizer and municipal wastes (sewage) to aquatic systems. Harvest crops - agricultural practices - remove nitrogen from soil system. Shift in species biodiversity to nitrogen- loving species. Since 1950 - doubled output of nitrogen from terrestrial system. Releasing stores of phosphate in environment (e. g. , water bodies and wetlands)
