Question

Find out what is the current r value for the human population.

Answer 1

A population growing in a habitat with limited resources shows a logistic growth pattern and its equation is: dN/dt = rN{(K− N/K)} Where,

• N = Population density at time t
• r = Intrinsic rate of natural increase
• K = Carrying capacity

Intrinsic rate of natural increase (r) is calculated as: r = (births - deaths)/ population size
The number of births per 1000 individuals from valid sources in the year 2019 = 17.664
The number of deaths per 1000 individuals from valid sources in the year 2019 = 7.265
Hence, the value of r = (17.664-7.265)/1000 = 0.0104

Due to the widespread pandemic, the r value is disturbed in the current scenario.