nutrient cycling Flashcards
what do the acronyms POC and DOC stand for
particulate organic carbon
dissolved organic carbon
what does the acronym DCM stand for
deep chlorophyll maxima
what do the acronyms NPP and GPP stand for
Net primary productivity
gross primary productivity
what is Mu and mu mean
the growth rates of phytoplankton
what is DMS
dimethyl sulfide = a volatile gas found in surface waters produced by microalgae and is the primary component of cloud condensation nuclei
what produced DMS
produced by enzymatic lyses of DMSPdimethyl sulfonioprpionate from microalage
what are some of the sampling methods of phytoplankton and other particles
1) research cruises
2) large water sampler
3) neutrally buoyant sediment trap
what are the major elements in the oceans found as ions
1) magnesium
2) calcium
3) pottasium
4) chlorine
5) sulphur
what are important macronurtients important for plankton but found in low abundance
1) nitrogen
2) phosphorus
3) silicon
what are important micronutrients important for plankton but found in low abundance
1) iron
what is the quantity of carbon found in the ocean
38,400 Gt
- approx 50 times more carbon in the oceans than in the atmosphere
- 20 times more carbon in oceans than in biosphere
what happens to cycled particulate organic carbon
eaten by zooplankton and bacteria turned into dissolved organic carbon and respired by bacteria back into the atmosphere
what is the photosynthesis equation
6CO2 + 6H2O –> C6H12o^ + 6O2
what is calcification
when marine organisms combine calcium with bicarbonate ions to make calcareous shells or skeletons
what is phosphorus used for in planktonic cells
forms part of ATP
RNA and DNA and phospholipid molecules within planktonic cells
