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POPULATION ECOLOGY - Coggle Diagram
POPULATION ECOLOGY
What dynamic process that effect population density?
Immigration is the influx of new individuals from other areas
Emigration is the movement of individuals out of population
Density is the result of an interplay between processes that add individuals to a population and those that remove individuals or the number of individuals per unit area or volume
What is population ecology?
The study of these and other question about what factors affect population and how and why a population changes over time
it has deepest historic roots and its richest development in the study of population growth, regulation and dynamics or demography
What is population?
Group of individuals of a single species living in the same general idea
population are described by their boundaries and size
Dispersion : The pattern of spacing among individuals within the boundaris of the population
Factor
Environment
Social Factors
Pattern in spacing
Clumped
Clumped dispersion may be influenced by resouce availibility and behavior
For many animals, such as wolves living in groups increase the effectiveness of hunting, spreads the work of protecting and caring for young and helps exclude other individuals from their territory
Uniform
Uniform dispersion fluenced by social interactions such as territorially the defense of a bounded space againts other individuals
Eg : Birds nesting on small islands such as the king penguins on South Georgia Island in the South Atlantic Ocean, often exhibit uniform spacing, maintained by aggressive intersaction between neighbours
Random
Random dispersion absence of strong attraction or repulsion
Eg : Dandelions grow from windblown seeds that land at random and later germinate
Demography is the study of the vital statisic of a population and how they change over time
Affect by
Birth rate
Death rate