how to: use and remineralize nuts Flashcards
15
limiting nutrients for aquatic primary producers. which of those are the most comon?
N, P, Si, Fe
N and P most common
primary producers use ____ forms of nutrients
inorganic
T/F: when cells uptake nutrients, they’ll always assimilate them
no not always, he could eat it and poop it out without actually using it
both nutrient uptake an assimilation require ____ to complete
energy
uptake rate depends on ________ in water
concentration of nutrients
uptake rate depends on _______ gradient
diffusion gradient
growth rate can be controlled by concentration of ______ and _______ of cells
nutrients inside and outside of cells
growth rate also depends on what TYPE/FORM of nutrient is floating in the water. what does this mean
some nutrients are faster at being assimilated than others
what is luxury consumption?
benefit?
is this a short or long term thing?
example of species that does this
- some organisms take up nutrients very fast when exposed to high concentration of nutrients for short period of time
- can give some guys a competitive advantage
- can not do this long term because it’s a lot of work to store all this extra food
- algae
what is stoichiometry
ratio of nutrients to each other
stoichiometry ratio of algae C:N:P give me the numbers
106:16:1
availability of nutrients determined by geology of environment. give two examples of how phosphorous can be limited by type of environment
clay binds phosphate = not available anymore
areas with volcanic ash = high phosphate = lots available
what are some limiting factors for aquatic ecosystems
nutrients (esp P and N), light, space
what is remineralization. and how do primary producers and heterotrophs contribute to remineralization
- through decomposition or metabolic activity, nutrients are able to go back to the environment (replenish)
primary producers = cell lysis = release nuts
heterotrophs = poop nutrients in waste or decompose dead bodies = release nuts
