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Do Now: Fun Friday!. Homework & Objective. Objective: Examine the impact of species interaction with one another. Homework – Read the Owl Pellet lab write up for Monday. Review the chapter. Plan for a test on chapters 1,2,3,4 on Tuesday (D Period), Wednesday for E Period.

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Do now fun friday

Do Now: Fun Friday!


Homework objective

Homework & Objective

  • Objective: Examine the impact of species interaction with one another.

  • Homework –

    • Read the Owl Pellet lab write up for Monday.

    • Review the chapter. Plan for a test on chapters 1,2,3,4 on Tuesday (D Period), Wednesday for E Period.

  • Research Project – Were due Thursday (the written portion) presentations will begin Monday.


Species interactions community

Species interactions & Community

  • Competition – Inter Competition & Intra Competition

  • Inter Competition

  • Intra Competition

    • Competitive exclusion

    • Resource partitioning – woodpeckers

    • Predator versus Prey


  • Species interactions community1

    Species interactions & Community

    Symbiosis – what is it? Are they always good?

    • Mutualism – each benefits

    • Commensalism

      • One benefit and the other is unaffected (Spanish Moss)

    • Parasite - one benefits, the other (most often the host) is harmed


    Species interactions community2

    Species interactions & Community

    • Amensalism– one harmed while the other is unaffected


    Species interactions community3

    Species interactions & Community

    • Turf cutting – Pines trees drop needles which changes the PH and other trees cannot grow there. This is a form of:

      • Allelopathy – plants that release chemicals to protect themselves or their area


    Species interactions community4

    Species interactions & Community

    • Trophic Levels – p. 84 & 85

      • Each rise on the level is a loss of energy (through respiration), only a small amount is transferred

      • Each level is just 10% of energy from the previous level

        • For every hawk there must be more rodents to eat and even more bugs,..


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