Abiotic factors are those such as water, air, light, temperature, and area. Biotic factors are those such as food supply and prey, predators, competition from other species, and population size.
Ecological selection (or environmental selection or survival selection or individual selection or asexual selection) refers to natural selection minus sexual selection, i.e.
In sexually-reproducing species, it is applicable mostly to situations where ecological pressures prevent most competitors from reaching maturity, or where crowding or pair-bonding or an extreme suppression of sexual selection factors prevents the normal sexual competition rituals and selection from taking place, but which also prevent artificial selection from operating, e.g.
In cases where ecological and sexual selection factors are strongly at odds, simultaneously encouraging and discouraging the same traits, it may also be important to distinguish them as sub-processes within natural selection.
Ecology, or ecological science, is the scientific study of the distribution and abundance of living organisms and how these properties are affected by interactions between the organisms and their environment.
Ecologicalfactors which can affect dynamic change in a population or species in a given ecology or environment are usually divided into two groups: abiotic and biotic.
Generally, an ecological crisis is what occurs when the environment of life of a species or a population evolves in an unfavourable way to its survival.
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