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14.2 Community Interactions

14.2 Community Interactions. Anna&Guga .. And GERRY( thirdwheel ). Competition and Predation. Competition and Predation are two important ways in which organisms interact These are just two examples of the many interactions between species in an ecosystem

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14.2 Community Interactions

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  1. 14.2 CommunityInteractions Anna&Guga.. And GERRY(thirdwheel)

  2. Competition and Predation • Competition and Predation are twoimportantways in whichorganismsinteract • These are justtwoexamples of themanyinteractionsbetweenspecies in anecosystem • http://www.berglabs.org/projects.shtml

  3. Competition • Occurswhentwoorganismsfightforthesamelimitedresources. • There are twodifferenttypes of competition: Interspecific and Intraspecificconpetition. • Interspecificcompetitionoccurswhentwodifferencspecies compete for a limitedsource, such as space. • Intraspecificcompetitionoccursamongmember of thesamespecies

  4. Predation • Theprocessbywhichoneorganism captures and feedsuponanotherorganism. • Manyorganismshavebecomehighlyadaptedtohunting and killingtheirprey. • http://video.nationalgeographic.com/video/rattlesnake-vs-rat-predation

  5. Symbiosis & Mutualism By:Gustavo Sa

  6. Symbiosis Vocab. Definition: “A relationship in which two different organisms live in close association with each other.” Symbiosis can be beneficial or harmful. There are 3 major types of symbiosis: -Mutualism -Commensalism -Parasitism

  7. Mutualism A major type of symbiotic relationship. In this relationship both organisms benefit from one another. Ex: The long-nosed bat and the saguaro cactus. The bats help pollinate the cactus, when they fly from one to the other to feed on it’s nectar. http://www.fs.fed.us/wildflowers/pollinators/pollinator-of-the-month/lesser_long-nosed_bat.shtml

  8. Commensalism- type ofsymbioticrelationship- • Relationshipbetweentwoorganisms • 1 recievesecologicalbenefitfromanother • Otheroneisunaffected • Example: - deep in thehairfollicesofyoureyelashesmight bemicroscopiemitescallesdemodicidswho foundtheirhighlyspecializedniche in yourhair follicesandfeed on thesecretionsanddead skincells

  9. Parasitism- another type ofsmybioticrelationship- • Relationshipbetweentwoorganismssimilartoprediation • 1 organismbenefits • Otherone ( thehost ) isharmed • Differencebetweenparatismandprediation: - predatorquicklyeatsandkills ist prey - parasitekeepsithostalivefordaysoryears Example: - braconidwasplaysitegssinsidecaterpillar - larvaehatch -> eatcaterpillarfrominside out - consumenutrientstheyneeduntiltheygrowtoadulds

  10. Picture links http://advocacy.britannica.com/blog/advocacy/wp-content/uploads/red-sea1.jpg http://creationrev.wpengine.netdna-cdn.com/wp-content/uploads/2012/02/2-6-12-crev-parasitism0905-1024x717.jpg

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