Skip to content
Login Register

#competition coefficients

3 public questions tagged with this topic.

Lotka Volterra Model

In Lotka–Volterra equations, what does β represent?

“Effect of species 1 on species 2” for in lotka–volterra equations, what does β represent. This relationship follows from the ecological mechanism represented by the terms in the item, not merely from an association between their names. Species interactions are classified by their net effects on the fitness of each participant, but those effects can change with density, resource supply, life stage, and environmental stress. Competition reduces access to shared limiting factors, whereas predation and parasitism transfer resources from victim to consumer. The remaining alternatives—“Effect of sp

Ref: Ecology: Concepts and Applications, Molles, 9th Ed., Ch. 13-14

View Details
Lotka Volterra Model

When both isoclines cross, and interspecific competition < intraspecific, the result is:

“Stable coexistence” for when both isoclines cross, and interspecific competition < intraspecific, the result is. This relationship follows from the ecological mechanism represented by the terms in the item, not merely from an association between their names. Species interactions are classified by their net effects on the fitness of each participant, but those effects can change with density, resource supply, life stage, and environmental stress. Competition reduces access to shared limiting factors, whereas predation and parasitism transfer resources from victim to consumer. The remaining alt

Ref: Ecology: Concepts and Applications, Molles, 9th Ed., Ch. 13-14

View Details
Lotka Volterra Model

If α12 = 0.5 and α21 = 0.5, the outcome is:

“Stable coexistence” for if α12 = 0.5 and α21 = 0.5, the outcome is. This relationship follows from the ecological mechanism represented by the terms in the item, not merely from an association between their names. Coexistence requires stabilizing differences that make each species limit itself more strongly than it limits its competitor, or an equalizing process that keeps fitness differences small. Without such mechanisms, persistent competitive asymmetry tends toward exclusion. The remaining alternatives—“Species 1 wins”, “Species 2 wins”, “Unstable coexistence”—refer to different states, p

Ref: Ecology: Concepts and Applications, Molles, 9th Ed., Ch. 13-14

View Details