{ "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-12T09:50:46Z", "providers": [ "Codex" ], "breadth": "recalled by Codex without web access - no source was read", "missingProviders": [], "pass": 2, "cost": { "grok": { "seconds": 30.5, "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a09505-b20e-78b0-8e09-7133418243bf\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: forest inventory\nSense to describe: (none recorded)\nDomain code: ACT.ACT\nAlso known as: (none)\n\n\nContext for this batch of 1001 things:\n# Batch 043: 100", "usd": 0.0, "recall": true }, "codex": { "seconds": 73.1, "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a09505-b215-7962-a49b-59af297f7c5a\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: forest inventory\nRegistry id: vr.tr.forest-inventory\nPlane / domain: ACT / ACT.ACT\nRegistry definition: (none recorded)\nNames folded into this entry:" } }, "enrichment": { "pass": 3, "engine": "claude", "producedAt": "2026-10-06T12:00:00Z", "ingestedAt": "2026-10-06T08:46:39+00:00", "fields": [ "agent_conduct", "ethics", "failure_modes_and_hazards", "owners", "standards_and_regulation", "visual_identification" ] }, "gate": { "passed": true, "version": "1.0", "at": "2026-10-07T10:10:26+00:00", "evidence": [ "completeness 1.00", "sense: Wikidata description", "2 live sources", "review by codex: pass" ] } }, "metaModel": { "id": "THING-Q1423188", "registryId": "vr.tr.forest-inventory", "name": "forest inventory", "version": "0.1.0-research.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "ACT.ACT" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q1423188/", "model": { "registry_id": "vr.tr.forest-inventory", "name": "forest inventory", "purpose": "Enable an AI agent to recognise, assess and use a forest inventory by recording what forest population it describes, how observations support estimates and which decisions those estimates can justify.", "definition": "Forest inventory is the systematic collection and analysis of observations about forests within a defined area to estimate their extent, composition, condition and resources, with repeated inventories enabling assessment of change.", "scope_statement": "This model owns forest inventory as a bounded activity for systematically observing and estimating forest resources and conditions, including its design, observations, estimation process and resulting evidence; it distinguishes the inventory activity from its datasets and from the forest itself.", "in_scope": [ "Inventory objectives, target forest population, geographic coverage and reference period", "Forest definitions, land classifications and tree eligibility rules", "Sampling design, plot establishment and field or remotely sensed observations", "Estimation of forest attributes with uncertainty and coverage limitations", "Remeasurement, comparability and interpretation of forest change", "Inventory quality assessment and fitness for specified decisions" ], "out_of_scope": [ "The forest ecosystem and its ecological processes independently of their observation", "Forest management plans, harvesting prescriptions and operational execution", "Land ownership, tenure adjudication and access rights themselves", "Sensor engineering and generic geospatial data infrastructure", "Carbon credit issuance and greenhouse gas accounting beyond inventory-derived inputs", "Biodiversity surveys that do not form part of the inventory's stated objectives" ], "distinguishing_features": [ "Has an explicit target population, reference period and observation protocol, distinguishing an inventory from an informal forest description.", "Connects observations to reported forest quantities through enumeration or an explicit estimation method, distinguishing it from a collection of tree records.", "States whether outputs describe individual trees, stands, ownership units or larger reporting domains, preventing a tree census from being mistaken for a landscape estimate.", "Treats maps and remote sensing products as evidence with defined interpretation and validation requirements, rather than assuming a forest cover map alone establishes a complete inventory.", "Describes forest resources or conditions; recommendations for planting, thinning or harvesting belong to management activities that may consume its results." ], "characteristics": [ { "name": "Inventory objective", "kind": "category", "unit_or_values": "Recorded objectives such as timber assessment, management planning, forest condition, biomass estimation or national resource reporting", "why_it_matters": "Determines which attributes, precision levels and reporting domains are necessary." }, { "name": "Target population", "kind": "relation", "unit_or_values": "Defined land area and eligible forest, stand, plot or tree units", "why_it_matters": "Establishes what the resulting estimates represent." }, { "name": "Forest and tree eligibility rules", "kind": "category", "unit_or_values": "Named classification rules with canopy, area, height, land-use and stem-size criteria where applicable", "why_it_matters": "Controls inclusion and exposes differences between inventories using different definitions." }, { "name": "Reference period", "kind": "measurement", "unit_or_values": "Observation dates, acquisition dates and reporting date or interval", "why_it_matters": "Reveals temporal mixtures and limits claims about current conditions." }, { "name": "Observation design", "kind": "category", "unit_or_values": "Enumeration or documented sampling design, including the role of remote sensing", "why_it_matters": "Determines how observations can support estimates beyond measured locations." }, { "name": "Observation effort", "kind": "measurement", "unit_or_values": "Plot count, measured area in hectares, tree count and achieved coverage by reporting domain", "why_it_matters": "Shows where evidence is concentrated and where reporting may be weak." }, { "name": "Estimated forest attributes", "kind": "measurement", "unit_or_values": "Attribute-specific units, such as hectares, stems per hectare, square metres of basal area per hectare, cubic metres of wood or tonnes of dry biomass", "why_it_matters": "Makes the quantities and their denominators explicit." }, { "name": "Estimate uncertainty", "kind": "measurement", "unit_or_values": "Estimate-specific standard error, confidence interval or other documented uncertainty measure and its included components", "why_it_matters": "Supports judgments about precision without treating unquantified errors as absent." }, { "name": "Inventory readiness", "kind": "state", "unit_or_values": "Planned, collecting observations, validating, estimating, released or superseded", "why_it_matters": "Separates provisional observations from outputs ready for their stated use." } ], "affordances": [ "Determine whether an inventory covers the forest population, period and attributes required for a proposed decision.", "Identify gaps in plots, measurements or classifications and propose targeted additional observations.", "Trace a reported forest estimate to its observations, expansion rules and supporting models.", "Compare inventory cycles after checking definitions, protocols and temporal compatibility.", "Flag estimates whose coverage, precision or model applicability does not support the intended interpretation.", "Produce a qualified summary of forest resources and conditions for a specified reporting domain." ], "agent_conduct": { "may": [ "Analyze forest inventory data with stated methods, sampling error and dates.", "Report national inventory results from official sources." ], "must_not": [ "Fabricate or alter inventory data.", "Use inventory data to plan illegal logging.", "Disclose locations of rare species or protected trees where publication puts them at risk.", "Present estimates as exact counts." ], "requires_human": [ "Decisions on harvesting, protection or land use based on the inventory." ] }, "ethics": { "considerations": [ "Forest data drives decisions on conservation, carbon accounting and the livelihoods of forest communities.", "Indigenous and local communities hold rights and knowledge about forests." ], "affected_parties": [ "Forest communities", "Indigenous peoples", "Wildlife" ] }, "owners": { "steward": "The forest owner or the national forest authority that runs the inventory.", "master_systems": [ "National forest inventory databases" ] }, "visual_identification": [ "Field crews measure trees on marked sample plots, with tags or paint marks on trees.", "Plot markers and remote sensing data support the inventory." ], "failure_modes_and_hazards": [ "Sampling errors bias estimates.", "Data misuse can harm forests or communities." ], "standards_and_regulation": [ "IPCC Guidelines for National Greenhouse Gas Inventories, Intergovernmental Panel on Climate Change, which include forest land." ], "what_it_is_for": [ "Forest inventory is used in forest management, conservation and resource reporting to estimate forest area, composition, condition and timber resources.", "It combines observations from defined sampling areas with mapping or remote sensing to support estimates for a larger forest population.", "Repeated inventories help assess changes associated with growth, harvesting, disturbance and management." ] }, "sources": [ { "id": "wikidata", "title": "Wikidata item Q1423188: forest inventory", "url": "https://www.wikidata.org/wiki/Q1423188", "url_status": "live", "what_it_supports": "identity and sense of the item", "checked_by": "wikidata-api" }, { "id": "wikipedia-en", "title": "Wikipedia: Forest inventory", "url": "https://en.wikipedia.org/wiki/Forest_inventory", "url_status": "live", "what_it_supports": "general description of the item", "checked_by": "wikidata-api sitelink" } ], "structure": { "bundles": [ { "id": "forest-population-and-purpose", "name": "Forest population and purpose", "description": "The forest population and decisions that give the inventory its boundaries.", "rationale": "Forest quantities are interpretable only when the included land, eligible vegetation and intended uses are explicit.", "layers": [ { "id": "inventory-objectives", "name": "Inventory objectives", "description": "The questions the inventory is intended to answer.", "findings": [ { "id": "decision-and-reporting-requirements", "name": "Decision and reporting requirements", "description": "Record required forest attributes, reporting domains and criteria for adequate evidence.", "questions": [ { "text": "Which decisions require this inventory, and which forest attributes must it estimate to support them?", "kind": "definition", "id": "decision-and-reporting-requirements-q01" }, { "text": "At what geographic scale and precision must results be usable before those decisions can proceed?", "kind": "action", "id": "decision-and-reporting-requirements-q02" } ] } ] }, { "id": "forest-inclusion-boundaries", "name": "Forest inclusion boundaries", "description": "Rules defining the land and vegetation represented.", "findings": [ { "id": "eligible-land-and-stems", "name": "Eligible land and stems", "description": "Record operational definitions and edge cases without assuming a universal definition of forest.", "questions": [ { "text": "Which forest definition and tree eligibility thresholds apply, and who selected them?", "kind": "provenance", "id": "eligible-land-and-stems-q01" }, { "text": "How are temporarily unstocked land, plantations, agroforestry, urban trees and boundary-crossing stands included or excluded?", "kind": "boundary", "id": "eligible-land-and-stems-q02" } ] } ] } ] }, { "id": "sampling-and-spatial-coverage", "name": "Sampling and spatial coverage", "description": "How observation locations represent the target forest population.", "rationale": "An inventory must distinguish measured locations from the wider forest area its estimates claim to describe.", "layers": [ { "id": "plot-selection-design", "name": "Plot selection design", "description": "The sampling frame, selection method and observation units.", "findings": [ { "id": "representation-through-selection", "name": "Representation through selection", "description": "Record how plots or other observation units enter the inventory and what supports inference from them.", "questions": [ { "text": "Is the inventory an enumeration or a sample, and how are plots, clusters or other units selected?", "kind": "definition", "id": "representation-through-selection-q01" }, { "text": "What selection probabilities, strata, plot areas or other design quantities are retained for estimation?", "kind": "measurement", "id": "representation-through-selection-q02" } ] } ] }, { "id": "achieved-forest-coverage", "name": "Achieved forest coverage", "description": "Differences between planned representation and completed observations.", "findings": [ { "id": "missing-and-inaccessible-plots", "name": "Missing and inaccessible plots", "description": "Record omissions, substitutions and treatment of areas that were not successfully observed.", "questions": [ { "text": "Which planned plots or forest areas were not observed, and what explains each omission or substitution?", "kind": "provenance", "id": "missing-and-inaccessible-plots-q01" }, { "text": "How does estimation address these gaps, and which reporting domains require further sampling or restricted claims?", "kind": "action", "id": "missing-and-inaccessible-plots-q02" } ] } ] } ] }, { "id": "forest-observation-protocols", "name": "Forest observation protocols", "description": "How field measurements and remotely sensed evidence describe forest attributes.", "rationale": "Diameter conventions, species identification and image interpretation can materially change what an inventory records.", "layers": [ { "id": "field-tree-and-plot-measurements", "name": "Field tree and plot measurements", "description": "Measurement conventions and identification practices at observed locations.", "findings": [ { "id": "repeatable-forest-measurements", "name": "Repeatable forest measurements", "description": "Record protocols for required attributes and the treatment of difficult measurement cases.", "questions": [ { "text": "How are stem diameter, height, species and living or dead status measured or classified, where required by the objectives?", "kind": "measurement", "id": "repeatable-forest-measurements-q01" }, { "text": "What rules cover forks, buttresses, leaning stems, uncertain species identifications and trees at plot boundaries?", "kind": "boundary", "id": "repeatable-forest-measurements-q02" } ] } ] }, { "id": "remote-sensing-evidence", "name": "Remote sensing evidence", "description": "The specific contribution and limitations of imagery or other remotely sensed observations.", "findings": [ { "id": "remote-and-field-alignment", "name": "Remote and field alignment", "description": "Record whether remote sensing supplies classifications, sampling support or model predictors, and how it aligns with field evidence.", "questions": [ { "text": "Which remotely sensed products are used, for what purpose, and with what acquisition dates and spatial resolution?", "kind": "provenance", "id": "remote-and-field-alignment-q01" }, { "text": "How are spatial mismatch, cloud or sensor gaps and differences between field and acquisition dates assessed?", "kind": "measurement", "id": "remote-and-field-alignment-q02" } ] } ] } ] }, { "id": "forest-estimation-and-quality", "name": "Forest estimation and quality", "description": "The transformation of observations into defensible forest estimates.", "rationale": "Forest area, timber volume and biomass estimates require explicit aggregation and, where applicable, models whose applicability must be assessed.", "layers": [ { "id": "derived-forest-quantities", "name": "Derived forest quantities", "description": "Expansion, aggregation and modelling used to obtain reported attributes.", "findings": [ { "id": "estimate-construction", "name": "Estimate construction", "description": "Record the route from measured trees or plots to totals, densities and other forest summaries.", "questions": [ { "text": "Which estimators, expansion factors and area denominators transform observations into each reported forest quantity?", "kind": "measurement", "id": "estimate-construction-q01" }, { "text": "Which volume, biomass or other supporting models are used, and what evidence supports their applicability to the observed species, sizes and forest conditions?", "kind": "provenance", "id": "estimate-construction-q02" } ] } ] }, { "id": "uncertainty-and-verification", "name": "Uncertainty and verification", "description": "Evidence about precision, measurement quality and unresolved error.", "findings": [ { "id": "qualified-estimate-reliability", "name": "Qualified estimate reliability", "description": "Record validation results and distinguish quantified uncertainty from limitations that remain unquantified.", "questions": [ { "text": "Which sampling, measurement, classification and model uncertainties are included in each reported uncertainty measure?", "kind": "measurement", "id": "qualified-estimate-reliability-q01" }, { "text": "What remeasurement, calibration or independent validation checks were performed, and which failures remain unresolved?", "kind": "provenance", "id": "qualified-estimate-reliability-q02" } ] } ] } ] }, { "id": "inventory-cycles-and-use", "name": "Inventory cycles and use", "description": "How inventory results support change assessment and bounded downstream use.", "rationale": "Apparent forest change can arise from incompatible inventories, and a valid estimate at one scale may not support decisions at another.", "layers": [ { "id": "remeasurement-and-change", "name": "Remeasurement and change", "description": "Connections between observation cycles and interpretations of forest change.", "findings": [ { "id": "comparable-forest-change", "name": "Comparable forest change", "description": "Record temporal alignment, persistent observation identities and changes in methods before interpreting differences.", "questions": [ { "text": "Which plots or trees are reidentified between cycles, and how are recruitment, mortality, removals and land-class transitions recorded where relevant?", "kind": "measurement", "id": "comparable-forest-change-q01" }, { "text": "Which changes in definitions, plot design, measurement protocols or estimation models limit comparison between cycles?", "kind": "boundary", "id": "comparable-forest-change-q02" } ] } ] }, { "id": "fitness-for-forest-decisions", "name": "Fitness for forest decisions", "description": "Conditions governing interpretation and reuse of released inventory results.", "findings": [ { "id": "supported-use-and-update-triggers", "name": "Supported use and update triggers", "description": "Record supported reporting scales, temporal limitations and events that prompt reassessment.", "questions": [ { "text": "Which uses are supported by the inventory's coverage and uncertainty, and which require finer-scale or additional observations?", "kind": "action", "id": "supported-use-and-update-triggers-q01" }, { "text": "What elapsed time, disturbance evidence or land-use change should trigger an update or qualification of the inventory's results?", "kind": "action", "id": "supported-use-and-update-triggers-q02" } ] } ] } ] }, { "id": "evidence-and-external-alignment", "name": "Evidence and external alignment", "description": "What the world already says about this thing, gathered so the model can be checked against it.", "rationale": "A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.", "layers": [ { "id": "reported-evidence", "name": "Reported evidence", "description": "Findings from the breadth pass, kept separate from the structural claims.", "findings": [ { "id": "evidence-confidence-notes", "name": "Check these first", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "The kinds listed overlap: geographic scope, management purpose, sampling design and observation method are separate classification axes.", "No universal numerical ranges are supplied because forest conditions and inventory inclusion rules vary substantially.", "The named FAO and IPCC frameworks are recalled references, not sources consulted for this response; applicability and jurisdiction-specific requirements need verification." ], "questions": [ { "id": "evidence-confidence-notes-q01", "text": "Which of these check these first hold for the sense of forest inventory this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-kinds", "name": "Kinds and varieties", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "National forest inventory", "Forest management inventory", "Pre-harvest timber inventory", "Continuous inventory using permanent sample plots", "One-time inventory using temporary sample plots", "Integrated field and remote-sensing inventory" ], "questions": [ { "id": "evidence-kinds-q01", "text": "Which of these kinds and varieties hold for the sense of forest inventory this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-identifiers", "name": "Identifiers and schemes", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ { "scheme": "Inventory-specific sampling-unit identifiers", "value_or_pattern": "Locally assigned identifiers for sampling clusters, plots, subplots and individual trees", "note": "These support relocation and repeated measurement; there is no universal forest-inventory identifier scheme." } ], "questions": [ { "id": "evidence-identifiers-q01", "text": "Which of these identifiers and schemes hold for the sense of forest inventory this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-standards-and-regulation", "name": "Standards and regulation", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "Food and Agriculture Organization of the United Nations (FAO): Global Forest Resources Assessment terms and definitions provide categories for international reporting.", "Intergovernmental Panel on Climate Change (IPCC): 2006 Guidelines for National Greenhouse Gas Inventories and their 2019 Refinement provide methods relevant to forest carbon accounting." ], "questions": [ { "id": "evidence-standards-and-regulation-q01", "text": "Which of these standards and regulation hold for the sense of forest inventory this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-real-world-use", "name": "Real-world use", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "Estimating forest area, growing stock and species composition for national statistics.", "Planning harvests, regeneration and other forest management operations.", "Estimating forest biomass and carbon stocks for greenhouse gas reporting.", "Assessing mortality, regeneration, disturbance and forest health.", "Tracking habitat attributes such as deadwood, tree-size diversity and species composition." ], "questions": [ { "id": "evidence-real-world-use-q01", "text": "Which of these real-world use hold for the sense of forest inventory this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-measurements", "name": "Typical measurements", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ { "quantity": "Tree diameter at breast height", "typical_range": "Protocol- and forest-dependent; minimum inclusion diameters differ between inventories.", "unit": "cm" }, { "quantity": "Tree height", "typical_range": "Species-, age- and site-dependent.", "unit": "m" }, { "quantity": "Basal area per unit land area", "typical_range": "Forest-type- and management-dependent.", "unit": "m²/ha" }, { "quantity": "Growing-stock volume per unit land area", "typical_range": "Depends on forest structure and the definition of included stem volume.", "unit": "m³/ha" }, { "quantity": "Live-tree density", "typical_range": "Strongly dependent on minimum tree size and whether seedlings and saplings are included.", "unit": "trees/ha" }, { "quantity": "Forest carbon stock per unit land area", "typical_range": "Depends on forest type and which carbon pools are included.", "unit": "tonnes C/ha" } ], "questions": [ { "id": "evidence-measurements-q01", "text": "Which of these typical measurements hold for the sense of forest inventory this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-failure-modes-and-hazards", "name": "Failure modes and hazards", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "Unrepresentative sampling or inaccessible plots can bias estimates if missing observations are handled inadequately.", "Changes in forest definitions, tree inclusion thresholds or measurement protocols can create apparent changes unrelated to actual forest change.", "Species misidentification, measurement errors and failed tree or plot relocation can distort stock and change estimates.", "Unsuitable volume or biomass equations and poorly calibrated remote-sensing models can introduce systematic error.", "Field crews face hazards from difficult terrain, falling branches, weather and remote working conditions." ], "questions": [ { "id": "evidence-failure-modes-and-hazards-q01", "text": "Which of these failure modes and hazards hold for the sense of forest inventory this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-regional-variation", "name": "Regional variation", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "Jurisdictions differ in forest definitions, including minimum area, canopy cover, tree height and treatment of plantations or temporarily unstocked land.", "Diameter reference height is commonly 1.3 m in metric protocols and 4.5 ft in United States practice; rules for buttressed or irregular trees also differ.", "National programmes differ in sampling design, remeasurement intervals and coverage of non-timber attributes, affecting comparability." ], "questions": [ { "id": "evidence-regional-variation-q01", "text": "Which of these regional variation hold for the sense of forest inventory this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-neighbours", "name": "Neighbouring kinds and how to tell them apart", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ { "name": "Forest monitoring", "difference": "Monitoring is organised around detecting changes through time; an inventory can describe conditions at a single time, although repeated inventories support monitoring." }, { "name": "Forest mensuration", "difference": "Mensuration supplies methods for measuring trees and stands; inventory applies measurements within a defined coverage and estimation framework." }, { "name": "Forest mapping", "difference": "Mapping locates and classifies forest features spatially; inventory estimates resource attributes and can use maps as inputs or produce them as outputs." }, { "name": "Timber cruising", "difference": "Timber cruising focuses on estimating timber quantity and quality, generally making it a narrower inventory activity." }, { "name": "Forest management planning", "difference": "Management planning selects objectives and actions; inventory provides evidence about forest resources and conditions." } ], "questions": [ { "id": "evidence-neighbours-q01", "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of forest inventory this model covers, and on what evidence?", "kind": "provenance" } ] } ] } ] } ] }, "openQuestions": [ "Does the registry intend forest inventory to denote the observation activity, its resulting information product or both, and does an existing world model already cover that scope?", "Which authoritative inventory frameworks should ground the model, and how should their differing forest definitions be represented?", "Which attributes are essential across inventory purposes, and which require optional extensions for timber, biomass, biodiversity or forest health?", "What evidence and validation requirements should distinguish acceptable design-based, model-assisted and model-based estimates for different uses?", "How should inventories combining observations from multiple years express their reference period and eligibility for change assessment?" ], "statistics": { "bundles": 6, "layers": 11, "findings": 19, "questions": 29 } }