Card Set Information
effects of predation.
set carrying capacity
-set distribution limits of prey
-influence age/size frequencies within prey populations
-influence diversity of community
growth of prey population =
intrinsic growth of prey population - removal of prey by predators
stabilizing factor for predator-prey interactions.
-density-dependent limitation on either predator or prey population (self-limitation)
-alternative food source for predator
-refuges for prey in restriccted part of habitat (untouchable reserve)
-influx of new replacement individuals from source population
example of predator/prey cycles.
owl/vole population in Scandinavia.
Northern scandinavia - 4 cycles (voles protected by snow)
Southern Scandinavia - 1 yr cycle.
directly kill hosts.