BI111 Chapter Notes - Chapter 182-183: Ecological Niche, Macrocystis Pyrifera, Niche Differentiation
Document Summary
Negative effects in interaction: competition: interference competition: plants producing chemicals, animals fighting, scramble competition: indirect interaction b/w 2 species for shared resource. Plants compete for light, nutrients & water, by taking it away from others. Competitive exclusion principle: community where 2 species compete for same limiting factors, they cannot coexist & only one persist. Ecological niche parts of specie"s envio (abiotic/biotic factors) that it uses or can tolerate. Fundamental niche all abiotic factors, & limiting resources. Realized niche (abiotic/biotic) that species can possibly utilize. Factors that species does utilize in presence of biotic interactions w/ competitors & predators. Ind that are more different from other species in some trait will have higher fitness than ind that are more similar to other species & will be favored by ns. Species can become more diff from one another in traits when live & interact within same geographical area = sympatry.
