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Ecological Interactions

Ecological Interactions. Unit 6-1 Notes Mr. Hefti – Pulaski Biology. Mutualism. B oth species benefit “+ +” relationship Examples Ants protect aphids that provide them food Clown fish / sea anemones . Predation. Predator – hunter Prey – hunted “+ -” Examples Wolf hunts rabbits

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Ecological Interactions

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  1. Ecological Interactions Unit 6-1 Notes Mr. Hefti – Pulaski Biology

  2. Mutualism • Both species benefit • “+ +” relationship • Examples • Ants protect aphids that provide them food • Clown fish / sea anemones

  3. Predation • Predator – hunter • Prey– hunted • “+ -” • Examples • Wolf hunts rabbits • Bear / salmon

  4. Parasitism • Organism lives on or near another causing harm • Host provides resources to parasite • “+ -” • Examples • Fleas / larger mammals • Tapeworms in intestines of large mammals

  5. Competition • Organisms use same resources • “+ -” • Examples • Birds feeding on same foods • Mountain goats attracting mates

  6. Commensalism • One benefits / other not affected • “+ 0” • Examples • Orchids living on trees in tropical forests • Barnacles on whales

  7. See if you can identify the ecological interactions and the +, -, or 0 relationships shown in the following pictures…

  8. 1

  9. 2

  10. 3

  11. 4

  12. 5

  13. Answers • 1 – Parasitism (+-) • 2 – Mutualism (++) • 3 – Competition (+-) • 4 – Commensalism (+0) • 5 – Predation (+-)

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