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Species Interactions

Species Interactions. By Sarah Cameron. Species Competition. Inter specific Competition: competition between members of different species. Intra specific Competition: competition between members of the same species. Competitive Exclusion vs. Species Coexistence. Competitive exclusion

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Species Interactions

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  1. Species Interactions By Sarah Cameron

  2. Species Competition • Interspecific Competition: competition between members of different species • Intraspecific Competition: competition between members of the same species

  3. Competitive Exclusion vs. Species Coexistence • Competitive exclusion - when a species entirely excludes another species from the use of a resource • Species coexistence - when none of the competing species exclude each other, but instead are able to live side by side

  4. Types of Niches • Fundamental Niche- the full niche where a species could live • Realized Niche- the portion of the fundamental niche where a species actually lives

  5. Mutualism Mutualism is a relationship in which two or more species benefit from interaction with one another Examples: Bumble Bee & Flower Clownfish and Sea Anemone

  6. Resource Partitioning • Resource partitioning- species adapt to competition by evolving to use different resources or using their shared resources in different ways • Partitioning = Dividing • Can lead to character displacement – evolving characteristics that reflect their different reliance on resources

  7. Example of Character Displacement

  8. Amensalism • Amensalism- relationship in which one organism is harmed while the other is unaffected • Example: Black Walnut Tree • Allelopathy- plants release poisonous chemicals that harm those surrounding them

  9. Commensalism • Commensalism- one species is benefited and the other is unaffected • Example: Remora Shark

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