Biotic factors
what is a biotic factor?
bioitic factor is a living compoment of an ecosystem
what are consumers & what are they also known as ?
organisms that eat other organisms for energy; also known as heterotroph
herbivores
organism that only eat plants/vegatation/producers
succesion
a gradual change in speices present in an area; usually disscussed after natural disasters as a primary succesion
symbiotic relationship
when organism interacts on a regulare basis; the interaction can have various effects on those involved
what is an abiotic factor
a non-living component of an ecosystem
what are producers & what are they also known as?
producers are organisms that create their energy from sunlight;decaying matter, also known as autotrophs.
decomposers/detriroves
organisms that eat decaying/dead material and recyling nuterients maintaining ecosystem health
density - independent limiting factors
elements of an ecosystem that limit the population size regradless of how spaced out indiviuals size
mutualism
a symbotic relationship where BOTH organism benefit
what is trophic levels
steps in a food chain or web
carnivores
organisms consume only meat
density - dependent limiting factors
elements of an ecosystem that limit the populaton size of a species b/c of how close indiviuals are to one another
a symbiotic relationship in which one organism benefit and other is harmed
a pyramid shows the different trophic levels and how energy is passed on to each level
omnivores
consume both plants, veggies, meat
- both producers and consumers
carrying capacity
population size of a species that can be steadily maintained within a ecosystem
commensalism
one organism benefits and other is unaffected
10% rule
only 10% of energy at any trophic level is passed onto the next level
competitve exlucision principle
if resource are limited, no two species can occupy the same niche at the same time