BIOL 215 Lecture Notes - Lecture 22: Krill, Energy, Southern Ocean
25 Jan 2018
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Gpp and npp: (overview of what we found confusing last class: gross primary production: energy (or carbon) fixed via photosynthesis per unit time, net primary production: energy (or carbon) fixed in photosynthesis- energy lost during respiration. Measuring npp in the field: plant growth integrates in itself respiration. So if we want to calculate it: have to measure change in biomass, l, and h, what is gpp and npp, gpp: photosynthetic co2 uptake, npp: photosynthetic co2 uptake - respiration, change in biomass: measuring photosynthesis - respiration. *where we got confused - in the ecosystem, picture will be different* Soil accumulation - related to plant growth: gpp - everything that fixes carbon from the sun. Answers: 0+175+300+150 = 625 (gpp) (add everything, 0+300+150 = 450 (npp) Book question 22. 5 (inorganic phosphate in north atlantic ocean: why is it lower in northern atlantic, nutrients don"t act alone - interactions, and more than 1 limiting nutrient (in north.
