{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.biological-productivity","code":"thing-q3289687","url":"https://ver.cy/models/thing/q3289687/","name":"Biological productivity","alternateNames":["aboveground net primary productivity"],"kind":"thing","status":"published","version":"0.2.0-wave.1","language":"en","classifiers":{"family":"Thing Registry","category":"Cross-cutting context","entryKind":"thing","plane":"XCT","domain":["XCT.REL"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"The rate at which biomass is produced in an ecosystem, especially primary productivity by photosynthesising organisms, measured as gross primary productivity or net primary productivity after autotrophic respiration, often in grams of carbon per square metre per year; secondary productivity refers to consumers.","purpose":"Let an agent explain biological productivity by definition, measurement, global patterns and drivers, with sourced data.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["A rate of biomass production","Primary and secondary forms","Varies by ecosystem","Linked to carbon cycle"],"structure":{"bundles":[{"id":"concepts","name":"Concepts","description":"Definitions.","layers":[{"id":"gpp","name":"GPP and NPP","description":"Gross and net.","findings":[{"id":"gpp-finding","name":"GPP and NPP","description":"Gross and net productivity.","questions":[{"text":"How do gross and net primary productivity differ?","kind":"definition"},{"text":"What is subtracted to get NPP?","kind":"definition"}]}]},{"id":"units","name":"Units","description":"Measurement units.","findings":[{"id":"units-finding","name":"Units","description":"Units.","questions":[{"text":"Is productivity given in carbon or dry mass, per area and time?","kind":"boundary"},{"text":"How can units be converted?","kind":"measurement"}]}]}]},{"id":"measurement","name":"Measurement","description":"Methods.","layers":[{"id":"field","name":"Field","description":"Harvest and flux.","findings":[{"id":"field-finding","name":"Field","description":"Field methods.","questions":[{"text":"How is productivity measured by harvest, flux towers or oxygen methods?","kind":"definition"},{"text":"What are their uncertainties?","kind":"boundary"}]}]},{"id":"satellite","name":"Satellite","description":"Remote sensing.","findings":[{"id":"satellite-finding","name":"Satellite","description":"Remote sensing.","questions":[{"text":"Which satellite products estimate productivity?","kind":"provenance"},{"text":"How are they validated?","kind":"provenance"}]}]}]},{"id":"patterns","name":"Patterns","description":"Global variation.","layers":[{"id":"ecosystems","name":"Ecosystems","description":"Comparison.","findings":[{"id":"ecosystems-finding","name":"Ecosystems","description":"Ecosystem comparison.","questions":[{"text":"What is typical productivity for this ecosystem, according to sources?","kind":"provenance"},{"text":"How does it compare with others?","kind":"measurement"}]}]},{"id":"drivers","name":"Drivers","description":"Controls.","findings":[{"id":"drivers-finding","name":"Drivers","description":"Drivers.","questions":[{"text":"Which factors limit productivity here, such as light, water or nutrients?","kind":"definition"},{"text":"How is climate change affecting it?","kind":"provenance"}]}]}]},{"id":"applications","name":"Applications","description":"Uses.","layers":[{"id":"fisheries","name":"Fisheries","description":"Ocean productivity.","findings":[{"id":"fisheries-finding","name":"Fisheries","description":"Fisheries.","questions":[{"text":"How does ocean productivity relate to fish stocks?","kind":"definition"},{"text":"Which assessments use it?","kind":"provenance"}]}]},{"id":"agriculture","name":"Agriculture","description":"Crop yields.","findings":[{"id":"agriculture-finding","name":"Agriculture","description":"Agriculture.","questions":[{"text":"How is productivity related to crop yield?","kind":"definition"},{"text":"Which data sources report yields?","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["Report productivity estimates with their method, units, place and date.","Model ecosystem productivity from data it is authorized to use."],"mustNot":["Present a modelled estimate as a direct measurement.","Overstate carbon removal by ecosystems to support offset or credit claims.","Disturb protected habitats to collect samples without permits."],"requiresHuman":["Using productivity figures to approve land use or carbon credits."]},"ethics":{"considerations":["Productivity estimates feed decisions on fishing, farming and climate policy that affect livelihoods.","Inflated claims of natural carbon uptake can delay real emission cuts."],"affectedParties":["Ecosystems","Fishing and farming communities","Policy makers"]},"owners":{"steward":"Nobody owns the concept; environmental agencies and research bodies hold the measurements.","roles":[],"masterSystems":[]},"relations":[{"target":"Q5333232","type":"parent","note":"registry parent class"},{"target":"ecological rate","type":"related","note":"category"},{"target":"photosynthesis","type":"related","note":"process"},{"target":"cellular respiration","type":"related","note":"process"},{"target":"remote sensing","type":"related","note":"method"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.biological-productivity","Wikidata: Q3289687 (https://www.wikidata.org/wiki/Q3289687)"]},"properties":{"applicability":"not-applicable","items":[]},"recognition":{"applicability":"optional","items":["Satellite maps of vegetation or chlorophyll","Units such as g C per m2 per year","Standing biomass is a stock, not a rate","Not visible directly; shown in maps of vegetation, chlorophyll and carbon uptake."]},"capabilities":{"applicability":"required","items":["distinguish gross and net primary productivity","find productivity estimates for ecosystems","explain measurement methods including satellites","describe drivers such as light, water and nutrients"]},"hazards":{"applicability":"required","items":["Confusing productivity with biomass","Mixing units of carbon and dry mass"]},"interfaces":{"applicability":"required","items":["No specific regulation; used in fisheries and climate reporting"]},"context":{"applicability":"required","items":["Ecology, fisheries, agriculture and climate science.","gross primary productivity","net primary productivity","aboveground and belowground productivity","secondary productivity","ocean primary productivity"]}},"sources":[{"title":"Wikidata item Q3289687: Biological productivity","url":"https://www.wikidata.org/wiki/Q3289687","note":"identity and sense of the item"},{"title":"Wikipedia: Productivity (ecology)","url":"https://en.wikipedia.org/wiki/Productivity_%28ecology%29","note":"general description of the item"}],"openQuestions":["Should primary and secondary productivity be separate entries?","How should satellite products be linked?","How should units be harmonised?"],"resources":{"spec":"/models/things/publications/thing-q3289687/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q3289687/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-11T13:03:37Z","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":"not-applicable","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-06T19:51:58+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass","interaction.properties":"Plane XCT: no invented physical properties."},"score":1.0}}