totality of individuals of one species occupying a certain space, and reproduces itself for generations - this is the population.This definition applies to wildlife and to people.The main factors of population dynamics in modern ecology include: size, density, fertility, mortality, structure and development.

number - a significant factor, which shows how many individuals of a particular population takes some space.Therefore it detected as natural resources spent on the vital activity of the population.In this case, it is important to maintain the balance of population in order to avoid drastic environmental and other natural changes in a particula
r area, as well as for the conservation of small populations.

system populations of plants, animals and other organisms existing with other populations forms biocenosis.In the relationship between populations of each participant is able to self-regulate and restore its dynamic balance.Also, he enjoys Interpopulation mechanisms that govern the relationship between populations of different species.

density - the number of individuals per unit area, where this population lives.The number and density - the value of the non-permanent, they change periodically.

birth rate - the number of new species appearing for a time.It considers the fact that not all born to grow further into a fully fledged individual.It is the nature of regulation and external factors.If the seeds of some plants have evolved one and all, then after a while the whole globe would be covered by this plant.

mortality rate - is the rate of decline in the number of individuals per unit of time due to illness, death, natural death, old age, lack of food.And development, dynamics, condition and reproduction of populations depends on the age and sex structure of a given population.