OM in Water
16 important questions on OM in Water
What does is mean if the hydrophilic compounds have higher mobilization?
How is soil OM composition controlled?
What happens with DOC if bacteria consume it? (two things)
1. Incorporate it into biomass (see above), or
2. Respire it as CO2
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If the age of POC is modern (0 to 1000 yrs), what type of mobilization method can you expect?
Overland flow or surface runoff
If the age of POC is modern or aged (10000 to 20000 yrs), what type of mobilization method can you expect?
What is the exception of mobilization method
What is the function and fate of POC? (four things)
1. Provides surface area for bacteria (important for ecosystem metabolism)
2. Some POC is quickly degraded (plankton source, fresh plant material)
3. POC is often bound to mineral surfaces in sediment
4. Large fraction of river POC is buried in the (coastal) ocean
What is the largest component of the dissolved organic matter pool?
Where is allochthonous DOC and POC derived from?
Where is autochthonous DOC and POC derived from?
What is the primary food source for bacteria?
Why are rivers almost always supersaturated with CO2?
What does petrogenic and biosheric means if its used as a division for POC?
What does EEMs mean and how can it be used?
What is a good predictor of DOC concentration?
What are the three steps in measuring the degradation of OC?
2. Measure CO2 or CH4 production
3. Measure O2 loss
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