The simple bottom grab sampler
The box corer
The simple piston corer
The multicorer, automatic sampling of multiple piston corers
The bottom dredge for epifauna
Measuring Benthic Primary Production
- Microalgae: small core incubations measuring oxygen production or CO2 decrease; deduct production from chlorophyll a extracted from sediment using P vs I curves
- Macroalgae: sampling and weighing in time intervals; punch-hole method – the hole will move away from the growth region of the thallus, growth can be expressed as distance / time;
-
Benthic
incubation chambers: large light and dark
plexiglas bells are put over seaweed; oxygen probes within the chambers
measure production/consumption of O2 over time; chambers can
vary in size according to size of studied seaweed.
