Examples include: population, community, species (meaning the collection of organisms that makes up a species, not the taxonomic rank), and family. A material entity that consists of two or more organisms, viruses, or viroids. group of organism organism collection May be of the same or different species. collection of organisms This a general term that can include every organism of a species living in an area or any subset of them. Subclasses can be more specific as needed. A collection of organisms, all of the same species, that live in the same place. ISBN:0878932739 It is sometimes difficult to define the physical boundaries of a population. In the case of sexually reproducing organisms, the individuals within a population have the potential to reproduce with one another during the course of their lifetimes. 'Community', as often used to describe a group of humans, is a type of population of organisms. Classes for population already exist in IDO ('organism population', IDO_0000509) and OBI ('population', OBI_0000181). The definitions should be standardized across OBO Foundry ontologies and only one term used. population of organisms A multi-species collection of organisms of at least two different species, living in a particular area. Must have at least two populations of different species as members. multispecies community ISBN:0865423504 Ecological community is defined broadly here, but includes both ecological interactions (inherited from parent term community) and spatial co-existence. It may be used to describe every organisms living in an area, but is often used to refer only to organisms of a particular taxon or guild (e.g., the plant community, the insect community, the herbivore community). The word community, as it often used to describe a group of humans living together, is a type of single-species collection of organisms, not an ecological community. ecological community A material entity that has as parts two or more organisms, viruses, or viroids of the same species and no members of any other species. collection of organisms of the same species single-species collection of organisms A collection of organisms that consists of two or more organisms from at least two species. Need to add axiom to specify that it has at a mimum members of two different species, but not sure how to specify that. Can't say "('has member' only ('member of' min 2 'species as a collection of organisms'))". multi-species collection of organisms A material entity that is one or more organisms, viruses or viroids. organismal entity A multi-species collection of organisms that consists of two or more microbes from at least two species. https://orcid.org/0000-0001-8815-0078 multi-species collection of microbes An ecological community which is composed of co-existing populations of microbial organisms that interact, directly or indirectly, such that they impact one another's ecological fitness. A class for a collection of organisms considered "microbial" and an accompanying quality in PATO (e.g. "microscopic") would be useful to better axiomatise this class. See https://github.com/PopulationAndCommunityOntology/pco/issues/22 http://orcid.org/0000-0002-4366-3088 http://dx.doi.org/10.1038/ismej.2009.88 microbiota The definition of a microbial species is deeply debated, however, units of phylogenetic and functional diversity are recognised with respect to their varying roles in an ecosystem. In turn, there exist multiple operational definitions of microbial community, such as local, phenomenological, and indexical communities. This class seeks to capture microbial communities in a very broad sense, as collections of phylogenetically and functionally divergent microbial organisms co-existing, potentially interacting, and competing for niche space in the same ecosystem over a period of time in which their causal footprints overlap one another. microbial community