Community Ecology

community ecology

Species Interactions

• Predation: when one organism eats all or part of another organism• Predation• praying mantis• Alligators• •

Predation • Adaptations of predators: • Good sense of smell and sight• heat sensing organs• Webs for capturing • Camouflage • Sharp teeth• Speed• Venom • Claws • Strength

Predation • Adaptations for prey:• Escape• Camouflage • Deceptive markings• Bitter taste• Poison • Spikes • Speed • Stinging cells• Mimicry: one species closely resembles another

• Cuttlefish• mimic octopus• cephalopod camo• 10 camo animals• mimicry and camo •

Competition • Competition: when 2 or more organisms use the

same limited resource• Competitive exclusion: when one species is

eliminated from a community because of competition for the same resource

Competition • Things organisms compete for:• Food• Water• Soil• Sunlight• Shelter• Territory • Mates

• Giraffes•

Symbiosis

• Symbiosis: a close, long-term relationship between 2 organisms• Symbiosis

Symbiosis • Mutualism: a relationship where both organisms

benefit• Clownfish• BBC symbiosis• ants and caterpillars •

Symbiosis

• Parasitism: a relationship where one individual is harmed and the other benefits• Parasites• hank parasites•

Symbiosis

• Commensalism: a relationship in which one species benefits and the other species is not affected• sharks