 # Closed Population And Exponential Model

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It is a group of individual organisms belonging to the same species which are living in the same area at the same time. or The Population can be defined as the group of inhabitants (individual) among the same species which are occupied a specific geographic area i.e. community of animals, plants, country, place, and humans etc.
Closed population:
Closed population is defined as a population in which neither immigration nor emigration occurs which is governed by rates of birth, growth, reproduction and death.
Metapopulation:
The group of populations that are separated by space but consist of same species. These spatially separated population interact as individual members which move from one population to other population (species). or a group of population
What is the relationship between intrinsic rate of increase and body weight
The relationship between an intrinsic rate of increase and body weight is calculated by the given equation rm=aWn whereas rm is the intrinsic rate of increase per day and W reveals average body weight in grams. a is a constant variable which takes three different values for unicellular organisms and heterotherm and homoiotherm animals respectively. The constant n has a value of about-0.275 for all three groups (Fenchel, 1974).
5. What is the main difference between geometric and exponential models?
In geometric models, there is a constant rate of increase in values like as birth rate increases in number forms i.e. 2, 4, 8, 16, 32, 64….. But in the exponential model, there is itself change in value like 2, 4, 16, 256…… because the exponential model has quite different increases exponentially in the power of ℮.
6. What is the relationship between the two constants r and λ?
Lambda λ is the ratio of the population size (population change) at one time to its one time unit earlier. We calculate λ from population counts at successive times, even when we do not know about per capita rate of birth and death. r is intrinsic rate of

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