chapter 46 Flashcards
benefit / benefit
mutualism
no effect / benefit
commensalism
harm / benefit
parasitism
no effect / no effect
neutralism
harm / no effect
amensalism
harm / harm
competition
mycorrhizae
fungi live within and around roots of plants
exploitative competiton
compete for common resources
interference competition
physically intimidating each toher
batesian mimicry
the mimic resembles and only the mimic benefits (false mimicry)
mullerian mimicry
both mimic and model benefit
species richness
number of species in a community or area
primary productivity
amount of biomass built up (food from plants)
lancet fluke needs:
three hosts- cow, snail, ant
ecotones
transition between ecological communities/ecosystems/regions along an environmental gradient (natual boundaries to human generated)
gleason’s individualistic model
each species has its own optimal habitat range along the gradient, species may overlap and intergrade, no sharp boundaries
clement’s holistic (organismic) model
species in communities cooperate, similar habitat requirements that make sharp boundaries among different communities
fundamental niche
a species could occur all the type of range that might be suitable for it
realized niche
species can grow but doesn’t occupy as much of its fundamental niche
ecological niche
the role/position a species has in its environment (how is meets its needs for food, shelter, survival, reproduction)
intraspecific
members of the same species
interspecific
members of the different speciews
