BIO1042 Lecture Notes - Lecture 8: Hubbard Brook Experimental Forest, Biosphere 2, Sulfur Cycle
17 Aug 2018
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Document Summary
The sulfur cycle: why is sulfur important, a component of some amino acids e. g. cystine. Some primitive (cid:894)(cid:858)sulfur(cid:859)(cid:895) bacteria use it in energy generation. Sulfuric acid: ore processing, fertilizer manufacturing, oil refining, wastewater processing, chemical synthesis, we can consider a biogeochemical cycle in terms of its, reservoirs, fluxes, energy, reservoirs, soil, plants, ocean, atmosphere, fossil fuels. Industrial: atmospheric, biotic, sea, volcanoes, erosion, energy. Industrial sulfur dioxide (so2) production: burning coal & the internal combustion engine. Sulfurdioxide: precipitate onto surfaces where it can be oxidized to sulfatein the soil, oxidized to sulfatein the atmosphere as h2so4 leading to acid rain. Biosphere 2: an experiment to try to reconstruct the important cycles & systems that help to maintain life on earth. What was biosphere2: eight people moved into a 1. 3 ha closed ecosystem for 2 years, produced their own oxygen, grew their own food, recycled their own water.
