BIOS-1073 Lecture Notes - Lecture 29: Interspecific Competition, Ecological Niche, Competitive Exclusion Principle
Document Summary
Study of how all the organisms that live in an environment interact with each other. Competition, predation, herbivory, symbiosis (mutualism, commensalism, parasitism), facilitation. Interspecific competition ? occurs when species compete for a resource in short supply. *ecological niche ? how a species uses its environment. Predation ? when one species, the predator, kills and eats the other, the prey. Interaction in which a herbivore eats parts of a plant or alga. Led to evolution of plant mechanical and chemical defenses and adaptations by herbivores. A relationship where two or more species live in direct and intimate contact with one another. The parasite derives nourishment from another organism, its host, which is harmed in the process. Parasites that live within the body ? endoparasites. Parasites that live outside the body ? ectoparasites. Obligate mutualism ? one species cannot survive without the other. Facultative mutualism ? both species can survive alone.
