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ECOSYSTEMS and COMMUNITIES

Explore the fascinating relationships in ecosystems and communities through competition, predation, mutualism, commensalism, and parasitism. Discover how organisms interact and depend on each other for survival.

christopherbenton
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ECOSYSTEMS and COMMUNITIES

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  1. ECOSYSTEMS and COMMUNITIES

  2. COMMUNITY INTERACTIONS • Competition • Compete for resources in order to survive • Predation • Predator and prey relationship • Symbiosis • Three kinds: • Mutualism • Commensalism • Parasitism

  3. PREDATION • Predator—does the killing • Hawk • Prey—the organism that is being eaten • Mouse • http://www.youtube.com/watch?v=QddgWcdwXQQ

  4. MUTUALISM • “mutual” means “both benefits” or “reciprocal relationship” • Mutualism—both benefit, neither are hurt • Example: • Flowers and bees • Flowers and bees both benefit: Flowers are pollinated by bees; bees receive nectar that flowers produced. Neither are hurt in this process

  5. Mutualism

  6. COMMENSALISM • One organism benefits • The other is NOT harmed and does NOT benefit • Example: • Barnacles on a whale • Barnacles grow and receive nutrients while on the whale. The whale is not harmed and does not benefit from the barnacles.

  7. Commensalism

  8. PARASITISM • One organism benefits • The other isharmed • Example: • Tapeworms, fleas, ticks • Animal is harmed. The tapeworm, flea, or tick benefits, receiving nutrients from animal’s body.

  9. Parasitism

  10. Videos • Mutualism http://www.youtube.com/watch?v=uxVMeLWzB_o • http://www.youtube.com/watch?v=zSmL2F1t81Q&feature=youtu.be

  11. http://www.youtube.com/watch?v=yEhujLgu7wM • http://www.youtube.com/watch?v=FOXvLZHe9DM • http://www.youtube.com/watch?v=zSmL2F1t81Q&feature=youtu.be

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