Studied by 5 people
competition
neither organism benefits (-/-)
predation
one benefits at the cost of another (+/-)
parasitism
one is harmed while the other is hosted and benefits (+/-)
mutualism
both benefit from relationship (+/+)
Batesian Mimicry
non-poisonus mimics patterns/colors of poisonus animal without producing poison
Mullerian Mimicry
similar coloration and patterns, 2 poisonus animals
Competitive exclusion principle
no 2 similar species can occupy the same niche at the same time
niche
the role an organism plays in a community
according the competitive exclusion principle, what happens when two species with the same niche compete for a resource
extinction of one of the species will occur
key stone species
an organism that helps define/support an entire ecosystem
what happens when a keystone species is remmoved from a community
community falls apart, invasive species takeover, over populated with certain species…etc
primary succession
newly expose/formed rock is colonized by living things for the first time (CREATES NEW SOIL)
secondary succession
an area that was previously occupied by living things is disturbed, then re-colonized following the disturbance (HAS OLD SOIL)
Identify four common tropic levels in ecosystems
Plant, primary consumers (herbivore), secondary consumers (carnivore), tertiary consumers (top predators)
Net productivity (NPP)
the amount of organic substance stored by autotrophs or producers in unit time per unit area
Gross Primary Productivity (GPP)
to the amount of organic substance synthesized by the producers in unit time per unit area.
what is the 10% rule
only 10% of the energy from an organism is passed on to the next trophic level, the other 90% is lost as heat and is released into the atmosphere
Biological magnification
the increasing concentration of a substance, such as a toxic chemical, in the tissues of organisms at successively higher levels in a food chain.
commensalism
one organism is benefited while the other is not affected
K
carrying capacity
N
population size
t
time
r MAX
when max growth rate is needed
if rate is faster then growth is faster
types of defesnive adaptations
-mechanical
-chemical
-aposematic coloration
-cryptic coloration
-batesian mimicry
-mullerian mimicry
