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Marine Food Webs

Marine Food Webs. A complex ecosystem. A marine food web. Arrows point to where the energy is GOING!. Trophic levels. Label the Producer 1° consumer 2 ° consumer 3 ° consumer Why the pyramid shape?. A trophic level is the level at which a particular organism feeds in the ecosystem.

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Marine Food Webs

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  1. Marine Food Webs A complex ecosystem

  2. A marine food web Arrows point to where the energy is GOING!

  3. Trophic levels Label the • Producer • 1° consumer • 2 ° consumer • 3 ° consumer Why the pyramid shape?

  4. A trophic level is the level at which a particular organism feeds in the ecosystem. • Energy and biomass is lost at each level because not all is consumed. About 90% of an organisms energy goes into its daily life processes and therefore is not passed on.

  5. Making a food web • The task is to come up with a food web containing all of the following organisms and at least 11 links. • Blue shark • Dinoflagellate (phytoplankton) • Zooplankton • Eelgrass • Atlantic Herring • Bluefin tuna • Canada goose • Human • Mysid shrimp • Blue Whale

  6. Symbiotic Relationships • There are three types of symbiotic relationships that can exist between two organisms: • Mutualism Both organisms benefit from the relationship- eg - remora fish with sharks and rays - clownfish and coral or sea anemones.

  7. When a predators comes to nibble on the anemone, the clownfish rushes out and drives it away. • The clownfish hides in the somewhat poisonous anemone tentacles from its predators.

  8. Remora and shark

  9. Commensalism • One organism benefits and the other is unaffected (neither harmed or helped). • Eg. Barnacles on whales or crabs

  10. Parasitism • One organism (the parasite) benefits from the host, and the host is harmed. • Eg. - Ascaris worm in codfish • - Sea lice on Atlantic Salmon

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