In the study of population growth models, the parameter ' r ' is considered a highly important measure for assessing the impacts of any biotic or abiotic factor on population growth. According to ecological principles, ' r ' is termed as the:

Step-by-step solution

In population growth models, the parameter r is defined as the intrinsic rate of natural increase. It is calculated as the difference between the per capita birth rate ( b ) and the per capita death rate ( d ), given by the equation r = b - d . This parameter is a crucial measure for assessing the impacts of any biotic or abiotic factor on the growth of a population. Carrying capacity is denoted by K , and environmental resistance is related to the term K - N K . Answer: Intrinsic rate of natural increase