Part 1 Food Chains & Food Webs

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Presentation transcript:

Part 1 Food Chains & Food Webs Ecology Part 1 Food Chains & Food Webs

Intro to Ecology Eco = earth Ology = study of Interactions of all living organisms on earth

Living Organisms Producers = make food from light (plants, algae) Consumers = organisms that use other organisms for food Decomposers = organisms that break down dead & decaying materials

Producers Autotroph = makes own food Uses photosynthesis Green due to chlorophyll pigment Trees, grasses, shrubs, flowering plants and algae in freshwater & marine environments www.naturalbornhikers.com/AntelopeValley www.diabloaudubon.com/images

Consumers Heterotrophs Animals Must get food from other source Herbivores =1st order Carnivores = 2nd, 3rd order lynx.uio.no/jon/gif/animals/deer ynx.uio.no/jon/gif/animals/redfox12.jpg

Herbivore Eats plants Will have flat/broad teeth for grinding plants www.tortoisetrust.org/articles/flowerfood2.jpg www.saburchill.com/images02/080106001.jpg www.lastrefuge.co.uk/images/photo/namibia105

Carnivore Eats other consumers Teeth will usually be sharp for ripping and tearing www.saburchill.com/images02/080106001.jpg www.abc.net.au/.../image/clash_carnivores.jpg www.kidzone.ws/imageschanged/sharks/teeth.jpg

Omnivore Omnivores Eats both plants and other consumers www.nhptv.org/.../graphics/laughinggullsm.jpg www.k12.de.us/warner/omnivores.JPG www.cals.ncsu.edu/.../soilpix/images/roach.jpg

Decomposers Break down dead and decaying materials Garbage workers in ecosystem Bacteria, worms, beetles, ants & fungi termites Dung Beetle www.cals.ncsu.edu/.../images/termites.jpg www.ontarionature.org/.../best_in_show.jpg herbarium.usu.edu/fungi/FunFacts/Eworms.jpg www.cals.ncsu.edu/.../tutorial/tumblebug.jpg

Food Chain Source of energy to start food chain is the sun Sun  producer  herbivore  carnivore  indicates the direction the energy travels in a food chain or food web

Food Chain Shows relationship between plant & animal that eats it PH  C www.eduweb.com/.../food/images/food_chain.gif

Grass  grasshopper  frog  snake  owl Grass  grasshopper  frog  snake  owl www.schools.ash.org.au/revesby/images/fc.gif

Food Web Series of interconnected food chains for an ecosystem www.gaac.co.uk/education/foodwe1.gif