Biology 1225 Chapter Notes - Chapter 17: Radiant Intensity, Radiant Energy, Species Richness
14 Jan 2018
School
Department
Course
Professor
Document Summary
17. 2 community structure: community all populations of all species in some area, vary in size and often nest one inside another, ex. Commensalism and mutualism: commensalism species interaction that benefits one species and has no effect on the other, mutualism species interaction that benefits both species, less exclusive relationships, can be involved in defence, considered the best of reciprocal exploitation. Brood parasites: do not feed on their hosts, but steal parental care, brood parasites an animal that tricks another species into raising its young, ex. Parasitoids: parasitoids an insect that lays eggs in another insect, and whose young devour their host from the inside, ex phorid flies, use biological pest control, usually target a specific type of host. Fire: 3 types of factors affect succession, physical factors such as climate, chance events such as the order in which pioneer species arrive, the frequency and extent of disturbances. Individuals who withstand or benefit from certain disturbances are at an advantage: ex.
