BIO_SC 1010 Lecture Notes - Lecture 33: Interspecific Competition, Flowering Plant, Herbivore
Document Summary
Community: all the organisms inhabiting and potentially interacting in a particular area. Species diversity is determined by the number of species & relative abundance of each species. Keystone species: species on which other species depend; hold community together. 75% of flowering plants (angiosperms) are dependent on insect pollinators. 1 in every 3 bites of food is pollinated directly or indirectly by honeybees. Interspecific interactions: the range of many different types of interactions that occur between species. Niche: specific biotic and abiotic resources an organism utilizes in its environment if the niche of 2 species overlap and the species rely on the same limited resource, then interspecific competition occurs. Competitive exclusion principle: 2 competing species cannot coexist for an extend period of time. One species must adapt & change its niche, Or one species will win and the other will become extinct. Relationship in which one species benefits (usually by obtaining nourishment) at the expense of the other.
