{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.wm-liv-003","code":"wm-liv-003-population","url":"https://ver.cy/models/wm-liv-003-population/","name":"Population","alternateNames":["P6","P7"],"kind":"world-model","status":"todo","version":"unversioned","language":"en","classifiers":{"family":"World Models","category":"Physical world and living systems","entryKind":"standalone-mm","plane":"","domain":["PHY.LIV.POP"],"industry":["Cross-industry"],"navPath":"NAV.PHY.LIV.POP","tags":["population","phy.liv.pop"],"facets":{}},"whatItIs":"A population is a group of organisms of one species, or a defined subspecies or stock, living in a defined area at the same time and able to interbreed. It is described by its abundance, distribution, structure and trend over time; a single organism, the species as a taxon and human demographic populations are outside it.","purpose":"Populations of one species in a defined area, with abundance, distribution and trend.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["A population is a group of living individuals in a place and time, not the species as a classification.","Its key facts are estimates, so method and uncertainty are part of every value.","Distinct from a biodiversity occurrence, which is a single record of an organism at a place and time.","Human populations are described by demography and population group models, not here."],"structure":{"bundles":[{"id":"LIV003-B1","name":"Delimitation","description":"Which organisms belong to the population.","layers":[{"id":"LIV003-B1-L1","name":"Taxon and area","description":"The species or unit and the area and period that delimit the population.","findings":[{"id":"LIV003-F01","name":"Population unit","description":"The population names its taxon, its area and the basis on which it is delimited.","questions":[{"text":"Which taxon, subspecies or management unit does the population consist of?","id":"LIV003-Q01"},{"text":"Which area and period delimit the population?","id":"LIV003-Q02"},{"text":"Is the boundary set by genetics, geography or management convenience?","id":"LIV003-Q03"}]}]}]},{"id":"LIV003-B2","name":"State and dynamics","description":"How large the population is and how it changes.","layers":[{"id":"LIV003-B2-L1","name":"Abundance and structure","description":"Counts, density and age or sex structure.","findings":[{"id":"LIV003-F02","name":"Abundance estimate","description":"Abundance is stated with its survey method and confidence interval.","questions":[{"text":"What abundance or density was estimated, and with which survey method?","id":"LIV003-Q04"},{"text":"What confidence interval or error is stated for the estimate?","id":"LIV003-Q05"}]},{"id":"LIV003-F03","name":"Population structure","description":"Age, sex or stage composition where known.","questions":[{"text":"What age, sex or stage composition was recorded?","id":"LIV003-Q06"},{"text":"How many breeding individuals does the population contain?","id":"LIV003-Q07"}]}]},{"id":"LIV003-B2-L2","name":"Trend","description":"Change in abundance over time.","findings":[{"id":"LIV003-F04","name":"Trend over time","description":"The trend is computed from comparable surveys over a stated period.","questions":[{"text":"Over which period and from which surveys was the trend computed?","id":"LIV003-Q08"},{"text":"Were survey methods comparable across the period?","id":"LIV003-Q09"}]}]}]},{"id":"LIV003-B3","name":"Status and management","description":"Assessment and human management of the population.","layers":[{"id":"LIV003-B3-L1","name":"Assessment and measures","description":"Conservation status, harvest limits and management actions.","findings":[{"id":"LIV003-F05","name":"Status and measures","description":"The population has an assessed status and any management measures in force.","questions":[{"text":"Which conservation status or stock assessment applies, and who issued it?","id":"LIV003-Q10"},{"text":"Which harvest limits, protections or recovery actions are in force?","id":"LIV003-Q11"}]}]}]}]},"agentConduct":{"may":["Compile abundance estimates and trends from cited surveys.","Map distribution from verified occurrence records.","Report the conservation status and management measures that apply."],"mustNot":["Publish precise locations of sensitive or threatened populations where this enables poaching or collection.","Present a model projection as a survey count.","Combine estimates from incompatible methods into one trend without saying so.","Set or change harvest limits or protection status.","Disturb animals or habitats when collecting data with field devices."],"requiresHuman":["Approving a stock assessment or conservation status change.","Deciding a cull, harvest quota or translocation.","Releasing location data for sensitive populations."]},"ethics":{"considerations":["Population figures drive decisions on hunting, fishing and protection that affect species survival.","Location data for rare species can attract poaching and illegal collection.","Local and indigenous communities depending on a population have a stake in how it is managed."],"affectedParties":["The organisms and their ecosystems","Communities that harvest or live alongside the population","Conservation and wildlife authorities","Fishers, hunters and farmers"]},"owners":{"steward":"A wildlife, fisheries or conservation authority that assesses and manages populations within its jurisdiction.","roles":[],"masterSystems":["National biodiversity monitoring database","Fisheries stock assessment database","Biodiversity occurrence data network"]},"relations":[{"target":"wm-liv-001-taxon","type":"references","note":"The population belongs to a taxon described there."},{"target":"wm-liv-010-habitat","type":"references","note":"Populations occupy habitats described there."},{"target":"wm-liv-022-conservation-status-assessment","type":"related","note":"Status assessments are made for populations and species."},{"target":"world-p6-flora-and-vegetation","type":"related","note":"Split off from this legacy card on 2026-10-05; the legacy card keeps the primary subject."}],"interaction":{"identity":{"applicability":"required","items":["A population is identified by its taxon identifier, such as a taxonomic name usage identifier, together with its area and period.","Managed stocks carry the identifiers assigned by the assessing body."]},"properties":{"applicability":"required","items":["Abundance as a count of individuals, with survey method and confidence interval.","Density in individuals per square kilometre or per hectare, for a stated area.","Range or area of occupancy in square kilometres.","Trend as percentage change per year or per generation over a stated period.","Biomass in tonnes for harvested stocks."]},"recognition":{"applicability":"required","items":["A population is recognised through survey counts, occurrence records, tracking or genetic sampling within a defined area.","Often confused with the species as a whole, with a single sighting or with the habitat it occupies."]},"capabilities":{"applicability":"required","items":["Abundance can be estimated by counts, mark-recapture, transects or environmental DNA.","Distribution can be mapped from occurrence records and models.","Trends can be computed from repeated comparable surveys."]},"hazards":{"applicability":"required","items":["Overharvest when abundance is overestimated.","Poaching enabled by published locations.","Disturbance of animals during surveys."]},"interfaces":{"applicability":"required","items":["Darwin Core for occurrence and survey records.","GBIF data publishing for occurrence data.","IUCN Red List Categories and Criteria for status assessment."]},"context":{"applicability":"required","items":["Used in conservation, wildlife management, fisheries and environmental impact assessment.","Many populations are protected by national law and international agreements."]}},"sources":[{"title":"IUCN Red List Categories and Criteria (International Union for Conservation of Nature)"},{"title":"Darwin Core standard (Biodiversity Information Standards, TDWG)"},{"title":"Global Biodiversity Information Facility (GBIF)","url":"https://www.gbif.org"}],"openQuestions":["Planned model: boundary questions, research and every section remain to be written."],"resources":{"spec":"https://ver.cy/models/wm-liv-003-population/spec.yaml","agents":"https://ver.cy/models/wm-liv-003-population/AGENTS.md"},"provenance":{"origin":"planned (registry candidate)","builtFrom":["models/runtime-index.json","ver-cy/world-models/card-supplements/wm-liv-003-population.json"],"providers":[],"researchStatus":"todo","generatedAt":"","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_":"Planned entry, hidden from the catalogue until researched.","_supplement":"Sections authored in card supplement 1.0.1 by Claude (Opus 5.5) (2026-10-06, unreviewed). Written from the card's existing content and established practice in the field; no new sources were read. Unreviewed."},"score":1.0}}