Competitive exclusion principle - The principle stating that two species competing for the same limiting resource cannot coexist, Resource partitioning - When two species divide a resource based on differences in their behavior or morphology, Predation - An interaction in which one animal typically kills and consumes another animal, Parasitoid - A specialized type of predator that lays eggs inside other organisms-referred to as its host, Parasitism - An interaction in which one organism lives on or in another organism, Pathogen - A parasite that causes disease in its host, Herbivory - An interaction in which an animal consumes a producer, Mutualism - An interaction between two species that increases the chances of survival or reproduction for both species, Commensalism - A relationship between species in which one species benefits and the other species is neither harmed nor helped, Keystone species - A species that is not very abundant but has large effects on the ecological community, Ecosystem engineer - A keystone species that creates or maintains habitat for other species, Ecological succession - The predictable replacement of one group of species by another group of species over time, Primary succession  - Ecological succession occurring on surfaces that are initially devoid of soil, Secondary succession - The succession of plant life that occurs in areas that have been disturbed but have not lost their soil, Pioneer species - A species that can colonize new reas rapidly and grow well in full sunshine, Climax community - Historically described as the final stage of succession, Theory of island biogeography - A theory that demonstrates the dual importance of habitat size and distance in determining species richness,

Chapter 6 pt2

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