Please enable JavaScript.
Coggle requires JavaScript to display documents.
Topic 9. Population Ecology - Coggle Diagram
Topic 9. Population Ecology
Population ecology is one of the most useful tools for understanding the factors that determine the birth and mortality rates . number of births and deaths)
Emergent Properties
that individuals who conform them do not, because of the fact that populations are, themselves, groups of individuals," that is why these are called emergent properties.
These features are discussed in order to describe and distinguish between populations
Major emergent properties of populations
Size
Density
Distribution pattern
Demographic Parameters
The population growth rate
Population structure
Factors that regulate population growth
Abiotic
prevent populations from overgrowing, either reducing their reproductive capacity or dying. These abiotic conditions can be very intense, and are considered natural disasters because they can have drastic effects on populations.
The density-dependent factors are classified as follows:
Competition: occurs between organisms that require the same resources, which are limited.
Predation: is an organism that feeds on another. This benefits one species (the predator) and affects the other (the prey).
Mutuality: organisms of different species benefit mutually when interacting. One example is the bee benefiting from flowers nectar and flowers are pollinated by bees.
Amensalism: one member is affected negatively, for example, plants that feed on others, like a vine that usually plague
Commensalism: one species is benefited in some way, such as remoras that live around sharks, feeding on the scraps and leaves it as a transport.
On the other hand, we can also classify these as intrinsic and extrinsic factors :
2 more items...
Biotic
there are factors that regulate the size of populations allowing population growth when population density is low and limiting it when it is high; this type is called density-dependent factors
also allows us to predict from these data, better crops, or prevent pests, among other applications.