3.1 Community Ecology Flashcards
what is community?
all the different species in an area
what is ecology?
the study of interaction among all populations in an environment
A niche includes
biotic and abiotic resources
a niche includes where, when, and
how a species uses the resources
overlapping niches
mean competition
the fundamental niche is
the potential space and resources where a species could live
the realized niche
where a population actually lives
“Gause’s Competition
Exclusion Principle”
no two similar species can oocupy the same niche at
the same time
competition results in niche
partitioning
resource partitioning also means
niche specialization
species divide niches by
time, location, and type of food
competition is
negative for both species
mutualism is
positive for both species
commensalism is
positive for one species, neutral for the other
predation/herbivory/parasitism is
negative for one species, positive for the other
endosymbiosis means
one or more species lives inside another species
symbiosis means
2 or more species share close physical interaction
non-symbiosis
organisms live apart from each other
species interact on an
interaction spectrum
community ecology leads to
evolution
facultative
organisms can survive without each other
