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  2. Population - Wikipedia

    en.wikipedia.org/wiki/Population

    In ecology, a population is a group of organisms of the same species which inhabit the same geographical area and are capable of interbreeding. [2] [3] The area of a sexual population is the area where interbreeding is possible between any opposite-sex pair within the area and more probable than cross-breeding with individuals from other areas.

  3. Dunbar's number - Wikipedia

    en.wikipedia.org/wiki/Dunbar's_number

    Dunbar's number has become of interest in anthropology, evolutionary psychology, [12] statistics, and business management.For example, developers of social software are interested in it, as they need to know the size of social networks their software needs to take into account; and in the modern military, operational psychologists seek such data to support or refute policies related to ...

  4. Community (ecology) - Wikipedia

    en.wikipedia.org/wiki/Community_(ecology)

    A bear with a salmon. Interspecific interactions such as predation are a key aspect of community ecology.. In ecology, a community is a group or association of populations of two or more different species occupying the same geographical area at the same time, also known as a biocoenosis, biotic community, biological community, ecological community, or life assemblage.

  5. Population ecology - Wikipedia

    en.wikipedia.org/wiki/Population_ecology

    A group of individuals within an investigator-delimited area smaller than the geographic range of the species and often within a population (as defined above). A local population could be a disjunct population as well. Subpopulation: An arbitrary spatially delimited subset of individuals from within a population (as defined above). Immigration

  6. Size of groups, organizations, and communities - Wikipedia

    en.wikipedia.org/wiki/Size_of_groups...

    Size (the number of people involved) is an important characteristic of the groups, organizations, and communities in which social behavior occurs. [1]When only a few persons are interacting, adding just one more individual may make a big difference in how they relate.

  7. Minimum viable population - Wikipedia

    en.wikipedia.org/wiki/Minimum_viable_population

    The so-called "50/500 rule", where a population needs 50 individuals to prevent inbreeding depression, and 500 individuals to guard against genetic drift at-large, is an oft-used benchmark for an MVP, but a recent study suggests that this guideline is not applicable across a wide diversity of taxa.

  8. Glossary of ecology - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_ecology

    The number of individuals of a species living in a defined area. population distribution See range. population ecology A branch of ecology which deals with the dynamics of populations within species, and the interactions of these populations with environmental factors. Also called autecology. population size

  9. Eusociality - Wikipedia

    en.wikipedia.org/wiki/Eusociality

    It is defined by the following characteristics: cooperative brood care (including care of offspring from other individuals), overlapping generations within a colony of adults, and a division of labor into reproductive and non-reproductive groups. The division of labor creates specialized behavioral groups within an animal society, sometimes ...