Geography 2011A/B Lecture Notes - Lecture 8: Congenital Disorder, Biomagnification, Bioaccumulation
25 Apr 2017
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Non-persistent pollution: degradable = damage is reversible. Eutrophication and oxygen depletion: biological productivity = the amount of living material supported within a lake, least productive = oligotrophic. Bod: bod demand in lake for o2 dissolved, when increased, not good, species not tolerant to low o2 die first. Industry is less of culprits and it"s the only thing filtering, eating all algae, spitting out toxic and using up rest: toxic algae bloom every summer in lake erie, monitor it so it doesn"t enter drinking water. If we stopped adding nutrients, this would not be an issue. In some cases, release of emerging chemical or microbial contaminants to the environment has likely occurred for a long time, but may not have been recognized until new detection methods were developed. In other cases, synthesis of new chemicals or changes in use and disposal of existing chemicals can create new sources of emerging contaminants.
