Ecosystem Flashcards
Two (2) laws that govern organisms
- law of tolerance
- law of limiting factors
‘the success of a species, its number, sometimes its size, etc., are determined largely by the degree of deviation of a single factor (or factors) from the range of optimum of the species
law of tolerance
Who first stated the law of tolerance in ecology
Shelford (1913)
growth of a population is restricted by the factors that are scarcest and not by the factors that are abundant
law of limiting factors
wide range of tolerance –>
diversity
position of an organism in the food chain
Trophic level
How are energy used?
- body heat
- feces
- cellular respiration
- growth and development
- reproduction
Two (2) processes in the ecosystem
- flow of energy
- material cycling
the flow of energy through living things within an ecosystem
energy flow
- different elements
- accumulation and transfer of one material to another
- recycling
material cycling
material cycling is the __, and __/__ of materials
- accumulation
- assimilation/integration