Question

In the following equation of Verhulst - Pearl logistic growth, the letter '$r$' denotes________
$\frac{dN}{dt}=rN(\frac{K-N}{K})$

• A. Carrying capacity
• B. Population density
• C. Extrinsic rate of natural increases
• D. Intrinsic rate of natural increases

Answer 1

Answer: (D)

Verhulst-Pearl logistic growth is expressed by:
$\frac{dN}{dt}=rN\left(\frac{K-N}{K}\right)$
where $N=$ population density at time $t$
$K=$ the maximum number of organisms that can be supported by a habitat without environmental degradation is called carrying capacity
$r=$ the number of birth rates minus the number of death rates in a population is called the intrinsic rate of natural increase.