Flashcards in Pyramids of Biomass Deck (10)
A trophic level is a ______ level
A trophic level is a FEEDING level
What is the entomology of the morpheme 'trough'?
It's Greek- meaning 'nourishment'
What 2 things are there less of every time you move up a trophic level in a food chain?
Are there usually more or less organisms every time you move up a trophic level?
There's usually LESS
Give an example of when it is NOT true that there are less organisms as you go up a trophic level
If 500 flees are feeding on 1 fox
What does 'biomass' mean?
The mass (amount) of living material
Why is it better to think about biomass than number of organisms when looking at food chains?
Because the biomass (basically) always goes down as you go up the trophic levels of a food chain
What does each bar on a pyramid of biomass show?
The total MASS OF LIVING MATERIAL at that trophic level
What shape are biomass pyramids practically always (unlike number pyramids)?