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AICE Marine chap 3

TermDefinition
productivity The rate of production of new biomass (living material) per unit area/volume by autotrophic organisms; in a given amount of time (ex: week/month/year)
keystone species An organism that plays a unique critical role in the way an ecosystem functions.
respiration Process used by all organisms cells to release the energy they require/use (for growth, muscle contraction, etc.)
cyanobacteria Causes Blue green algae outbreaks
detritus Dead/decaying organic matter
dinoflagellate Causes Red tide algae blooms
pyramid of biomass graphical representation of the total dry mass of living organisms at each trophic level in an ecosystem
pyramid of energy graphical model that illustrates the flow of energy through the different trophic levels of an ecosystem, showing that energy decreases at each successive level.
macroalgae Seaweed: Green, red, brown algae/seaweed Brown algae: Kelp & sargassum
flowering plants Marine flowering plants (mangroves, seagrass, cordgrass)
microalgae Phytoplankton: cyanobacteria, diatoms & dinoflagellates (zooxanthellae)
trophic level feeding level within a food chain/web.
detritivore/decomposer niche Decomposers break down dead organic matter (detritus) They return nutrients to the cycle and make them available for producers. Detritivores ex: crabs
nitrogen used to make amino acids = proteins & nucleic acids (DNA/RNA)
calcium used to make bones, teeth, corals & shells (CaCO₃)
magnesium used to make chlorophyll, controls enzymatic functions
phosphorus used to make DNA/RNA, ATP, phospholipid cell membrane and bone
carbon used to make all organic materials (carbs, proteins, DNA/RNA, lipids)
 

 



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