d3 Flashcards
uniform dispersion
evenly spread because of competetion
clumped dispersion
goruped into favourable patches where resources are likely found
random dispersion
unaffected by biotic factors
usually high resources
biotic potential (r)
maximum # of offsprings with no difficulties which isn not ideal
carrying capacity (k)
max # of organisms that an ecosystem can support at one time due to limiting factors
natality
of births
mortality
of deaths
immigrations
moving in
emigrations
moving out
^N
change in populatiob size
open populations
changes result from natality, mortality, immigration and emigration
closed population
changes in natality and mortality only, usualy rare
lag phase
increasing slowly
log phase
exponential growth period
stationary phase
population hits carrying capacity
Density-Independent
factors affect a population no matter how big or small it is: PAW phenomena,abiotic factors,weather
R selected stradegy
max reproduction in unstable environments, little care, lots but dont survive
K selected stradegy
stable environment and maximize survival, lots of care, stable pop size
type 1
humans
type 2
hare, large cats, chimpanzee
type 3
oyster, turtles, fish, frogs
