Major abiotic and biotic factors that tend to increase or decrease the population size and age and sex composition of a species.
The study of changes in population densities and the underlying biological forces which cause them. It is the basis of all ecological patterns and is also necessary to solve problems of human economy such as biological conservation, pest management, and optimal harvesting of wildlife populations.
The study of the factors that affect the growth, stability, and decline of populations, as well as the interactions of those factors.
The three demographic processes (i.e. fertility, mortality and migration) and the changes they bring about in population size, growth, distribution and composition.
changes in population size that result from various forces (such as disease, habitat destruction, predation, etc.) that control and regulate populations over time.
the study of changes and the reasons for changes in population size.
The study of fish populations and how fishing mortality, growth, recruitment, and natural mortality affect them.
Population dynamics is the study of marginal and long-term changes in the numbers, individual weights and age composition of individuals in one or several populations, and biological and environmental processes influencing those changes.