BIOLOGY 2F03 Lecture Notes - Lecture 13: Seed Predation, Kangaroo Rat, Logarithm
11 Dec 2015
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Document Summary
Competition is a form of interaction in which all individuals are harmed. Interspecific competition - between individuals of the same species (ex. Intraspecific competition - between individuals of different specie (ex. damselfish ) damselfish ) Interference competition - direct aggressive interactions because there is limited reef space. Damselfish maintain possession of their territory by attacking intruders. Exploitative / resource competition - indirect interaction through use of. Self-thinning: reduction in population density as a stand of plants increases in biomass, due to intraspecific competition of limited resources. The losers in the competition are unable to continue to grow and may die. To represent self-thinning plot the total biomass (sum of the biomasses of all individuals in the population) against population density. the slope of the resulting line is -1/2 (aka. The there is a one unit increase in total plant biomass with each 2 unit decrease in population density.
