community ecology slide set 1 3/27 Flashcards
Community
all the organisms that live together in a place (no abiotic factors)
they also need to be close to interact
Community Ecology
study of
interactions
among all
populations
in a common
environment
Interspecific interactions – between 2 diff species
competition, predation, herbivory, symbiosis (parasitism, mutualism, and commensalism), and facilitation
interspecific interactions can affect
survival and reproduction
there can be what type of affects and symbols
positive (+), negative (–), or no effect (0)
fundamental
potential niche/ new idea
relized is an
actuall niche
niche
An organism’s niche is its ecological role
habitat = address vs.
vs. niche = job
fundamental on a graph
relized on a graph
_____________
Competitive Exclusion
No two similar species can occupy the same niche at the same time
niches ecological rule means
how it uses its reources
niche is everything about in ex,
all behavior
only 1 organism
gets one specific niche
diffrences between sepceis
can be only one nich/
why to species need to be seperated by niches
seperaion so they can coexist
either shape up (change) or get lost
Resource partitioning
Reduce competition through microhabitats
microhabitats
small habitats in main habitat
like forest areas
shade
sun
partial sun and shade
Temporal Partitioning
dividing time
ex. one animal is active at night while the other is resting at night vice versa
temporal partioning ex
Spiny mouse
Nocturnal but other mouse comes in taking there resources at night so they slowly adapted to become diurnal, so they have diff niches so they can coexists
Character Displacement
-tendency for characteristics to be more divergent in sympatric populations of two species than in allopatric populations of the same two species
sympathic
same geographic
alloptric
seprate geographicly
