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SYMBIOSIS

SYMBIOSIS. How are our relationships comparable to ecology?. Interest Grabber. Fitting In. Section 4-2.

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SYMBIOSIS

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  1. SYMBIOSIS How are our relationships comparable to ecology?

  2. Interest Grabber Fitting In Section 4-2 • Organisms not only live together in ecological communities, but they also constantly interact with one another. These interactions, which include predation and competition, help shape the ecosystem in which they live. • 1. Based on your own experiences, define predation. Give one example of predation. • 2. Based on your own experiences, define competition. Give one example of competition. Go to Section:

  3. Symbiosis: is a close ecological relationship between the individuals of two (or more) different species. Mutualism: cooperative relationship in which both species derive some benefit. Example: Pollination Parasitism: one individual known as the parasite, feeds on another individual, known as the host. Endoparasite- Internal Ectoparasite- External Commensalism: interaction in which one species benefits and the other is not affected. What is symbiosis?

  4. How do we understand Symbiosis? • Every ecosystem has many different symbiotic relationships. Each fills a niche. All symbiotic relationships are specific to the organisms. You can’t replace one with another.

  5. Parasites

  6. Commensalism • An orchid lives on a tropical tree. It lives on the tree to reach the sunlight.

  7. Mutualism • There is a bird, the Egyptian plover, which cleans crocodile teeth by eating the left over food particles in the crocodile’s mouth.

  8. Abiotic and Biotic Factors Section 4-2 Abiotic Factors Biotic Factors ECOSYSTEM Go to Section:

  9. Habitat vs. Niche • Habitat- place where an organism lives • Niche- the use of its habitat and its function/ role in the community

  10. Niche • Fundamental niche- the entire range where an organism could survive. • Realized niche- actual area in a community that an organism occupies due to competition.

  11. Figure 4-5 Three Species of Warblers and Their Niches Section 4-2 Cape May Warbler Feeds at the tips of branches near the top of the tree Bay-Breasted Warbler Feeds in the middle part of the tree Yellow-Rumped Warbler Feeds in the lower part of the tree and at the bases of the middle branches Spruce tree Go to Section:

  12. Biomagnification Movement of toxin through a food chain. Increases 10x/level

  13. Figure 6-16 Biological Magnification of DDT Section 6-3 Magnification of DDT Concentration Fish-Eating Birds 10,000,000 Large Fish 1,000,000 100,000 Small Fish 10,000 Zooplankton 1000 Producers Water 1 Go to Section:

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