BIO205H5 Lecture 17: How can we model competition?
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Increased deer mouse abundance - reduced annual growth rate. Lc: this is an example of ____ competition a. b. c. Diatoms - longer shells - reached their carrying capacity. Silica is the base component of their shells. Carrying capacity for synedra is limited by the concentration of silica in their environments. Asterionella was also increasing in the beginning but their population drops. For some reason or another, synedra appears to be the better competitor. We can use the logistic growth model to describe changes in population size due to competition. We need to add two elements to the equation: to reflect size of competing population (alpha: conversion rate to make equivalent of the effect by 1 member of n2 to n1) We can formulate two equations for the two involved species. Beta is not always the inverse of alpha but only if the relationship is linear. Equilibrium isocline - population doesn"t increase or decrease.
