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News http://www.boston.com/news/nation/articles/2009/09/30/senate_climate_bill_tougher_now_than_houses_version/ http://www.boston.com/news/nation/articles/2009/09/30/epa_seeks_to_limit_chemical_runoff_from_plane_deicing/

Published byἈχιλλεύς Παπανικολάου Modified over 5 years ago

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Presentation on theme: "News http://www.boston.com/news/nation/articles/2009/09/30/senate_climate_bill_tougher_now_than_houses_version/ http://www.boston.com/news/nation/articles/2009/09/30/epa_seeks_to_limit_chemical_runoff_from_plane_deicing/"— Presentation transcript:

1 News

2 Photosynthesis 50% of primary productivity is on land; 50% in the ocean 6 CO2 + 6 H20 (+ light, nutrients, Chlorophyll, trace elements, and enzymes)C6H Autotrophs vs. Heterotrophs Chemosynthesis H2S +CO2Corg + SO4

3 Primary Productivity Total Carbon fixed in gC/m2/day
GPP – respiration = net primary productivity How can you measure net primary productivity? How can you measure NPP? Can measure by C14 uptake (HCO3-) O2 production nitrate uptake

4 Image courtesy of NASA

5 Factors that affect productivity
Light Nutrients Water Species

6

7 Aquatic Food Chain Image courtesy of teachnet-lab.org

8 Terrestrial Food Chain

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