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Transcript 
Niches and Interactions(pg.153)
Presented by: Stephanie Cajamarca
The Niche Concept
 Mode of existence of a species= Ecological niche
 Include:
 Habitat
 Nutrition
 Relationship
Competitive Exclusion
Principle
 Grey squirrels vs. Red squirrels population in the UK from 1937 to 2007
Fundamental and realized
niche
• Barnacle study by Joseph Cornell
Interactions between
Species
Herbivory
Primary consumer eating producers
• Manatees eating aquatic grasses
Herbivory
• Flea beetle eating broccoli leaf
Predation
A consumer feeding on another consumer
• Kazakhstan Eagle hunting a rabbit
Predation
• Venus fly trap consuming a fruit fly
Parasitism
A parasite that lives on or in a host
• A tick using a dog as a host
• Ectoparasites
Parasitism
• Hornworm Vs. Wasp larvae
• Endoparasites
Competition
Two species completing for the same resources
• Douglas fir and Western hemlock in Northwest USA
Competition
• Pocillopora damicornis
• Pavona varians
Mutualism
Different species in beneficial relationships
• Goby fish and Pistol shrimp
Mutualism
• Cleaner wrasse fish obtaining food
Bibliography

Allott, A. (2007). 18 Option G- Ecology and Conservation. In Biology for the IB
Diploma: Standard and higher level. Oxford: Oxford University Press.

http://www.thwink.org/sustain/glossary/CompetitiveExclusionPrinciple.htm

http://www.saburchill.com/Ibbiology/chapters02/035.html

http://en.wikipedia.org/wiki/Douglas_fir

http://www.bonnersferryherald.com/news/outdoor_news/article_be0c720c-70fb11e4-a3a2-d71e0737e1e1.html

http://study.com/academy/lesson/parasitism-examples-definition-quiz.html

https://www.youtube.com/watch?v=nZZyJQNmOV8

http://www.untamedscience.com/biology/ecology/interactions-amongorganisms/predation-and-herbivory/
Bibliography
 http://www.eoearth.org/view/article/155341/
 http://www.ext.colostate.edu/pubs/insect/05592.html
 http://animals.pawnation.com/marine-animals-herbivores11740.html
 http://study.com/academy/lesson/realized-niche-exampledefinition-quiz.html
 http://www.perkepi.com/ecological-niche/
 http://akademia2k12.blogspot.com/2012/10/the-impact-ofgrey-squirrel-culling-on.html
 http://uhbiology.kahikai.org/?p=611
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