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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/. Photosynthesis.

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Presentation Transcript
slide1
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/
photosynthesis
Photosynthesis
  • 50% of primary productivity is on land; 50% in the ocean
  • 6 CO2 + 6 H20 (+ light, nutrients, Chlorophyll, trace elements, and enzymes)C6H1206 + 602
  • Autotrophs vs. Heterotrophs
  • Chemosynthesis
    • H2S +CO2Corg + SO4
    • http://www.divediscover.whoi.edu/vents/vent-video.html
    • http://www.divediscover.whoi.edu/biology/video.html
primary productivity
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
factors that affect productivity
Factors that affect productivity
  • Light
  • Nutrients
  • Water
  • Species
aquatic food chain
Aquatic Food Chain

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