chap 54 Flashcards
(19 cards)
niches
all of the abiotic and biotic resources needed by a species
competitive exclusion
two species cant coexist if they compete for the same limited resources
resource partitioning
species in an ecosystem divide up their resources to avoid competition
primary succession
- an ecological succession that begins in a new site
- no biotic community has previous lived there before
- NO SOIL OR VEGETATION
secondary succession
Succession that follows after a destruction
- community had previous existed there
- there’s soil and sometimes vegetation
process of facilitation in succession patterns
interaction where one specie has a positive effect on the survival and repr. of another species
NOT a type of symbiosis
process of inhibition in succession patterns
the early colonizing species actively prevent the establishment of other species
process of tolerance in succession patterns
new species come and go but don’t change the environment
how to make predictions based on its size and distance from the mainland – based on island biogeography
- islands closer to the mainland are more diverse and have larger pops
- bigger islands = more species
- extinction rate should increase with the number of species
- # of species on an island is determined by the balance btw immig and extinction
community
assemblage of many pops that occupy the same area
species richness
the number of different species in a community
species evenness
distribution/abundance of the species in an ecosystem
species diversity
the # of different species and teh relative abundance of the indv species
biomass
total amount of living tissue within a given trophic level
keystone species
a species that influences the survival of other species
community ecology
deals with interactions between organisms
aposematic coloration
bright warning colors in animals with toxins
cryptic coloration
camouflage
mimcry
resemblance of a toxic organism
