GEOG 001 Lecture Notes - Lecture 25: Bioaccumulation, Ecocide, Rainbow Herbicides
10 Aug 2020
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Drought- hyperarid, descending arms of hadley and ferrel cells dry air. Conflict- from tenure/customary arrangements/ethnicity- food and water insecurities, outbreak of civil war 2003, land degradation, overgrazing, sedentary vs nomadic pastoralists. Changing rainfall patterns- rainfall from july-september, intermittent rainfall. Movement of itcz- cool water in north atlantic means that the itcz is moving south, migrates with latitude, seasons, tilt. Environmental refugees- 5 million of displaced persons resulting in civil war then genocide. Global dimming- sulphate aerosols from power plants in industrialised world, cools north atlantic and pushes itcz southwards. Acid rain- fell over polluting areas in northern hemisphere. Cap and trade regulation pollution- developed world reduced emissions, clean air act 1989, tragedy systems. External migration- environmental and political refugees migrate to surrounding nations, over 5 million idp, people are more vulnerable. Flooding- low lying agricultural areas susceptible, due to expansion of impervious surfaces. Changing agricultural practices- extremely fertile, nutrients, water source for agriculture. Rural poverty- vulnerable areas prone to flooding.
