Ecology Final

14 cards·by alecia

Species interactions

when individs of one species affect the fitness of individs of another species. affectpopulation dynamics

coevolution

adaptation in two or more organisms that act as selective agents on each other

kin selection

when organisms pass on their traits directly, through survival & reproduction of close relatives

rescue effect

predators dispersed enough to keep local predator pops from going extinct (during times of low prey)

moran effect

when large weather patterns cause a pattern in organismal pop, causing it to "cycle" (snowshoe hares)

character displacement

when natural selection favors traits that decrease competition through resource partitioning

types of mutualisms

1. food for reproductive service 2. food for protection 3. food for nutrients

facultative mutualists

species dont need to interact to survive (most)

obligate mutualists

species do need to interact to survive

what can limit mutualists?

preators, space, disease, anything density dependent

bioaccumulation

when pollutants are ingested/absorbed by living things, even in small amounts

net primary productivity

the amount of CO2 used by plants druing photosynthesis, minus what comes out during respiration (per year)

additive effect

two factors affect an organism more than individually

synergistic effect

one factor affects an organism more than when paired with another