BIOL 1001 Lecture Notes - Lecture 14: Intraspecific Competition, Thrips, Toxic Waste
Document Summary
Explain why a common goal in natural resource management is to maintain harvested populations as close to k/2 as possible. A common goal is to maintain harvested populations as close to k/2 as possible because k/2 is the maximum amount that can be harvested. Anything that increases to k/2 would not be able to survive and would not have enough resources. However, k changes overtime and k and n are hard to estimate. Describe how maximum sustainable yield (msy) is calculated for a population under harvest d n / d t = msy (maximum sustainable yield) Explain the terms r selection and k selection with reference to the logistic growth model and give examples of species that show each type. When n is usually lower than k due to uncrowded and little competition, natural selection should favour adaptations that increase r to create lots of offspring. For example, weedy plants that colonize short-lived open environments.
