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Kelp Forests!!!

Kelp Forests!!!. What?. The kelp forest is a forest, but it is not a forest of trees. It is made of seaweed called giant kelp. Only kelp plants with air bladders form forests. Algae:. Kelps belong to a group of plants called algae. Algae are autotrophs, they photosynthesize

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Kelp Forests!!!

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  1. Kelp Forests!!!

  2. What? • The kelp forest is a forest, but it is not a forest of trees. It is made of seaweed called giant kelp. • Only kelp plants with air bladders form forests.

  3. Algae: • Kelps belong to a group of plants called algae. • Algae are autotrophs, they photosynthesize • Three kinds of algae—red, green, and brown—live in the ocean. • Giant kelp is a type of brown algae. • Seaweed is a non-scientific name for all large marine algae.

  4. Giant kelp Macrocystis pyrifera is one of the world's fastest growing plants. It can grow as much as 300 feet in a single year. When the tops reach the surface, they keep on growing to form a floating mat. The kelp forest provides shelter and protection for many animals.

  5. Kelp consists of at least three parts: the holdfast, stipe, and blade. The holdfast is a part that attaches the kelp to the ocean floor. The blade is the leaflike part that takes in sunlight to make food. The stipe is the part that connects the holdfast to the blade.

  6. Where? Giant kelp grows in cool coastal waters where sunlight can go down to a rocky sea floor. • http://www.abc.net.au/oceans/jewel/kelp/default.htm http://aquarium.ucsd.edu/learning/learning_res/voyager/kelpvoyager/forests1.html

  7. Kelp Forest Ecosystem: basics • Cold, clear water • Rocky bottom, close to shore • Autotrophs: seaweed (giant kelp and other species), phytoplankton • Heterotrophs: depend on the kelp forest is. • Very diverse and productive

  8. Seaweed for breakfast? • Seaweed is used commercially for many things. • Examples include: biofuels, cosmetics, fertilizers, seaweed bath or wraps, wastewater treatment, animal feed, and is in chocolate milk and yogurt.

  9. What lives in the forest? http://aquarium.ucsd.edu/learning/learning_res/voyager/creaturevoyager/index.html Basic food chain

  10. Sea Urchin

  11. Sea Otter • Sea otters exert strong control on kelp forest food webs. By feeding upon sea urchins, otters reduce the intensity of grazing and allow kelps to develop dense populations. Sea otters bring urchins, abalones, and other benthic animals to the surface and often smash them on their chests with the aid of a rock.

  12. Population decline? • Some sea otter populations off the west coast of Canada have declined by over 90%! • Scientists have discovered that killer whales which normally feed on larger seals and sea lions have started feeding on sea otters. • This is leading to an explosion in the sea urchin population and they are eating all the giant kelp.

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