Biology Flashcards
heterotrophs
herbivore/carnivore, consume autotrophs
what do heterotrophs do
take organic material and turn into organic material
autotrophs
plants/bacteria
what do autotrophs do
take inorganic nutrients (nitrate/phosphate) and turn into organic
why do they need micronutrients in large conc
as they come in small doses
order of autotrophs/heterotrophs
autotrophs —- heterotrophs (herbivores)—- heterotrophs (carnivores)
primary producers
use photosynthesis, inorganic to organic
terrestrial plants
large multicellular plants, transfer nutrients/water through leaves
marine
plants are small, unicellular, nutrients from seawater
what does an autotroph want to be
as small as possible as high surface area to vol ratio
when can autotrophs big
lots of nutrients
phytoplankton
diatoms, coccolithophores, dinoflagellates, cyanobacteria
diatoms
silicon, pillbox shape, transports carbon to deep water, eukaryotic, has oil to combat sinking from heavy silicon
dinoflagellates
2 tails, some species are toxic, cause algal bloom, prokaryotes
coccolithophores
calcium carbonate shells, transport carbon, heavy, reflect sun
cyanobacteria
photosynthetic bacteria, fixes nitrogen, important into oligotrophic areas
biomass
how much mass
primary production
how much photsynthesis
factors limiting growth of phytoplankton
major, secondary
major
nutrients/sun
secondary
upwelling of nutrients, water movement
blooms
occurs when lots of nutrients/sun
photic zone
where photosynthesis happens
things affecting nutrient conc
grazing, turbidity
