ENV 101 Chapter Notes - Chapter 4: Trophic Cascade, Evolutionary Arms Race, Trophic Level
Document Summary
Species interactions: three types of interaction: competition; predation, parasitism, and herbivory; and mutualism. Predators kill and consume prey: predation process by which individuals of one species hunt, capture, kill, and consume individuals of another species. Herbivores exploit plants: herbivory animals feed on the tissues of plants, some plants produce toxic/distasteful chemicals; others arm themselves with thorns, spines, etc. Ecological communities: community populations of organisms living in same area at the same time, community ecology scientific study of species interactions and the dynamics of communities. Food webs show feeding relationships and energy flow: food chain linear series of feeding relationships, food web visual map of energy flow that shows the many paths along which energy passes as organisms consume one another. Introduced species species introduced by people (bringing over to other areas: become invasive when limiting factors that regulate their population growth are absent.
