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  2. Biological organisation - Wikipedia

    en.wikipedia.org/wiki/Biological_organisation

    The higher levels of this scheme are often referred to as an ecological organisation concept, or as the field, hierarchical ecology. Each level in the hierarchy represents an increase in organisational complexity , with each "object" being primarily composed of the previous level's basic unit. [ 2 ]

  3. Organizational ecology - Wikipedia

    en.wikipedia.org/wiki/Organizational_ecology

    The ecology of organizations is divided into three levels, the community, the population, and the organization. The community level is the functionally integrated system of interacting populations. The population level is the set of organizations engaged in similar activities.

  4. Ecological unit - Wikipedia

    en.wikipedia.org/wiki/Ecological_unit

    Ecological units refer to specific levels or degrees of organization within ecological systems. The units that are most commonly used and discussed within ecological systems are those at the levels of individuals, populations, communities, and ecosystems. [1]

  5. Hierarchy theory - Wikipedia

    en.wikipedia.org/wiki/Hierarchy_theory

    Hierarchy theory is a means of studying ecological systems in which the relationship between all of the components is of great complexity. Hierarchy theory focuses on levels of organization and issues of scale, with a specific focus on the role of the observer in the definition of the system. [1]

  6. Ecology - Wikipedia

    en.wikipedia.org/wiki/Ecology

    The scope of ecology contains a wide array of interacting levels of organization spanning micro-level (e.g., cells) to a planetary scale (e.g., biosphere) phenomena. Ecosystems, for example, contain abiotic resources and interacting life forms (i.e., individual organisms that aggregate into populations which aggregate into distinct ecological ...

  7. Unit of selection - Wikipedia

    en.wikipedia.org/wiki/Unit_of_selection

    Two useful introductions to the fundamental theory underlying the unit of selection issue and debate, which also present examples of multi-level selection from the entire range of the biological hierarchy (typically with entities at level N-1 competing for increased representation, i.e., higher frequency, at the immediately higher level N, e.g., organisms in populations or cell lineages in ...

  8. Integrative level - Wikipedia

    en.wikipedia.org/wiki/Integrative_level

    The levels concept is an intellectual framework for structuring reality. It arranges all entities, structures, and processes in the universe, or in a certain field of study, into a hierarchy, typically based on how complex their organization is. When arranged this way, each entity is three things at the same time: It is made up of parts from ...

  9. Eusociality - Wikipedia

    en.wikipedia.org/wiki/Eusociality

    Eusociality (Greek εὖ eu "good" and social) is the highest level of organization of sociality. 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 ...