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Download Chapter 4-3 predation, herbivores and keystone species
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Transcript
Chapter 4-3 predation, herbivores and keystone species By: Noelle Yip Emily Kuo And Lillian Xue Vocab Predation- an interaction in which one animal (the predator) captures and feeds on another animal (the prey). Predation • Biological interaction where predator feeds on prey.Eg: Lions and gazelles, polar bears and seals, humans and cows, snakes and deer. QuickTime™ and a decompressor are needed to see this picture. • Herbivory- is an interaction in which one animal (the herbivore) feeds on producers (EG. Plants). Herbivory • Interaction where animal (herbivore) feeds on producers (plants). • Eg: Aphids and plants, horses and plants, and rabbits and vegetables/plants. • Keystone species- changes in population of a single species, which can lead to dramatic changes in a structure of a community. Keystone Species • Keystone species is a species that has an unequal effect on its environment relative to its biomass. Eg: Grizzly bear, elephants, jaguar. sources • textbook section 4-3 • http://en.wikipedia.org/wiki/Keystone _species
