GEV 1050 Lecture Notes - Lecture 6: Mauna Loa Observatory, Ammonium Nitrate, Nitrogen Cycle

• School: Villanova University
• Department: Geography and the Environment
• Course: GEV 1050
• Professor: Weston

Document Summary

Cli(cid:272)ker questio(cid:374)s: (cid:272)ar(cid:271)o(cid:374) (cid:272)(cid:455)(cid:272)le do(cid:373)i(cid:374)ated (cid:271)(cid:455) photos(cid:455)(cid:374)thesis (rest of (cid:448)arious i(cid:373)porta(cid:374)(cid:272)e: largest flu(cid:454) is photo, respiration is 2nd, gas exchange (between aquatic and terrestrial domains) (2) sulfate reduction, methanogenesis, denitrification all redox reactions, all anaerobic. Car(cid:271)on (cid:272)y(cid:272)le (cid:271)reathing earth(cid:863): humans changing c cycle: long term burial of carbon, oxidizing through burning, producing co2, charles keeling (measured monthly co2) mauna loa observatory, notice the upward trend in the high and low points. 1950 1960 1970 1980 1990 2000 2010 2020: start measuring methane, see similar increase. Key concepts: types of carbon compounds, major reservoirs, major fluxes, human alterations. Toxic algal blooms (even breathing can expose you to the harmful effects) Macronutrient chart: these 11 elements make up more than 99. 0% of the total atoms in living organisms. Limiting nutrient in many ecosystems (most often is n) limits the npp; if you add more (fertilize) tree grows more. Amt. of n needed not equal in all ecosystems (other times phosphorus)