- Joined
- May 22, 2016
- Messages
- 6,532
- Reaction score
- 10,071
Oh god, not the DSB debate.
I like Lasse's terminology, we're talking about Particulate Organic Matter (or Carbon) POM or POC. And we're distinguishing between the labile portion that is easily consumed and broken down, and the refractory portion that is difficult for anything to consume. What starts as a mix of labile and refractory, becomes refractory in short time as the good parts get consumed.
Uneaten food, excreted waste, dead algae, and dead inverts are the origins of the stuff.
for @Dan_P thinking about quantification.
"The lability of the estuarine particulate organic matter was estimated
by two analyses: 1/labile organic matter was measured as the organic carbon loss during incubation tests over one month; 2/ the hydrolysable organic fraction was determined after 6N HCl digestion."
POM in some French river estuaries
HCl sounds faster, but they only got <10% labile stuff coming out of rivers, so it doesn't sound like there's much to find unless you look reeeally carefully.
I like Lasse's terminology, we're talking about Particulate Organic Matter (or Carbon) POM or POC. And we're distinguishing between the labile portion that is easily consumed and broken down, and the refractory portion that is difficult for anything to consume. What starts as a mix of labile and refractory, becomes refractory in short time as the good parts get consumed.
Uneaten food, excreted waste, dead algae, and dead inverts are the origins of the stuff.
for @Dan_P thinking about quantification.
"The lability of the estuarine particulate organic matter was estimated
by two analyses: 1/labile organic matter was measured as the organic carbon loss during incubation tests over one month; 2/ the hydrolysable organic fraction was determined after 6N HCl digestion."
POM in some French river estuaries
HCl sounds faster, but they only got <10% labile stuff coming out of rivers, so it doesn't sound like there's much to find unless you look reeeally carefully.