Primary marine production Flashcards
Primary gross production
Total organic matter produced by autotroph organism
Net primary production
Total organic matter produced - organic matted consumed for respiration
What are marine primary producers?
Seagrasses
Macroalgae
Phytoplankton (eukariotes and prokariotes)
What factors influence primary production?
Quality and quantity of light
Macro and micronutrients
Elemental composition of community (C:N:P)
What is the main pigment for photon absorption during photosynthesis?
Chlorophyll a
What is chemotaxonomy?
Identification and quantification of different groups of phytoplankton with pigment signature
How does light decrease in the water column?
Exponentially, following Lambert-Beer’s law of attenuation
What are techniques to measure primary production?
Biomass increase
Differences in chemical elements between organisms and environment
Light and dark bottles
Carbon 14 method
