amphora
Enable an AI agent to recognise, document and assess organisms provisionally identified as the diatom genus Amphora, while separating taxonomic identity from observations of specimens and populations.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
recalled by Codex without web access - no source was read
Researched by: Codex
Purpose and description
Enable an AI agent to recognise, document and assess organisms provisionally identified as the diatom genus Amphora, while separating taxonomic identity from observations of specimens and populations.
Amphora, interpreted here as the diatom genus in the living-organism domain, is a taxon of unicellular photosynthetic organisms with silica cell walls and characteristically dorsiventral valves.
It can be Compare calibrated valve images with a cited diagnosis and retain a tentative identification when decisive characters are unresolved.; Link a taxonomic determination to specimen images, a voucher or a culture accession.; Measure valve dimensions and striation across multiple cells to assess diagnostic variation.; Separate living-cell observations from records based on empty or preserved frustules.; Evaluate whether a habitat or experimental claim applies to a particular species, population or culture.; Choose imaging, preservation or culture procedures according to the evidence needed and whether living material must be retained..
Distinguishing features
Confirm that the record denotes a biological taxon or diatom specimen rather than a two-handled vessel; the registry domain alone is insufficient identification evidence.
Compare valve outline and dorsal-ventral asymmetry against a cited identification treatment, recording the viewing orientation.
Check raphe position, course and terminal features against the proposed taxon's diagnosis rather than assigning the genus from outline alone.
Compare valve dimensions, striation and finer ornamentation with diagnostic ranges under a stated microscopy method.
Test the identification against Halamphora and other similar diatom genera using a current, explicitly selected taxonomic treatment.
Scope
+ The taxonomic concept of Amphora and evidence supporting assignment to it
+ Individual cells, frustules and samples explicitly linked to an identification
+ Microscopic characters used to distinguish Amphora from similar diatoms
+ Life-cycle and physiological observations with their measurement conditions
+ Population occurrences, habitat associations and culture handling
- Amphora as a pottery vessel or archaeological artefact
- Independent definitions of species assigned to Amphora
- Complete models of aquatic ecosystems or microbial communities
- Microscope design and general laboratory equipment operation
- Food products, commercial preparations or materials derived from diatoms
Characteristics
- Record subject
- taxon concept | individual cell | isolated frustule | population | mixed sample | culture Prevents attributes of a taxon, a living cell and a collected sample from being treated as interchangeable.
- Taxonomic determination
- accepted name, rank, authority, taxonomic source and identifier where verified Makes the intended Amphora concept traceable when classifications or combinations differ.
- Identification resolution
- unidentified diatom | tentative Amphora | supported genus assignment | supported species assignment | disputed Controls which ecological and biological conclusions the evidence supports.
- Valve dimensions
- length and width in µm, with orientation, calibration and number measured Supports diagnostic comparisons without confusing viewing geometry or within-population variation with taxonomic differences.
- Valve and raphe character set
- documented outline, asymmetry, raphe position and endings, with unresolved features marked Provides inspectable evidence for distinguishing similar amphoroid diatoms.
- Striation
- striae per 10 µm, specifying valve region and imaging method Allows diagnostic comparisons while exposing differences in measurement location and visibility.
- Biological condition
- living | apparently nonviable | empty frustule | preserved | indeterminate Separates evidence of occurrence from evidence of a living population.
- Occurrence environment
- sampling location, date, substrate, water body and measured environmental conditions Connects habitat claims to actual observations instead of extending them automatically across the genus.
- Culture composition
- mixed enrichment | unialgal | axenic | unknown, with verification method and date Determines whether an experimental response can reasonably be attributed to the identified diatom.
Also called
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 5 bundles · 9 layers · 16 findings · 29 questions.
Taxonomic identity Resolve the registry sense and establish which taxonomic treatment governs an Amphora determination.
The lowercase name is ambiguous, and a biological interpretation still requires a precise taxon concept.
Registry sense
Establish whether the entry denotes the diatom genus and how subordinate observations relate to it.
Biological referent
Treat the diatom interpretation as provisional until the originating registry record establishes its referent.
- Does the originating registry identifier resolve to the diatom genus Amphora, a species, or the pottery-vessel sense? definition
- Does this observation describe the taxon itself, an individual cell, a population or a mixed sample? boundary
Nomenclature and determination
Anchor names and identifications to a dated taxonomic reference.
Traceable taxon concept
Record the accepted name, authorship and identifier only after checking the selected authority, preserving earlier determinations separately.
- Which taxonomic source supports the accepted name, authorship and circumscription used here? provenance
- Has this specimen's published name been transferred to Halamphora or another genus under that treatment? boundary
- Who made the determination, when, and from which specimen or image evidence? provenance
Microscopic identification Capture the valve characters and imaging evidence needed to evaluate an Amphora assignment.
A general resemblance or boat-shaped silhouette cannot substitute for a documented differential identification.
Orientation and outline
Separate viewing geometry from diagnostic shape and dimensions.
Comparable valve observations
Associate every shape interpretation and measurement with the imaged structure, orientation and calibration.
- Is the image a valve view, girdle view or oblique view, and can dorsal and ventral sides be distinguished? measurement
- What are the calibrated valve length, width and outline across the measured cells? measurement
Diagnostic fine structure
Assess raphe, striation and ornamentation against explicit alternatives.
Differential identification evidence
Keep observed characters separate from characters expected by a key, and mark features that the imaging method cannot resolve.
- Which observed raphe and valve-ornamentation characters support Amphora under the selected diagnosis? boundary
- Where was stria density measured, and which diagnostic details remain unresolved at the available resolution? measurement
- What additional view or microscopy method would distinguish the strongest competing identification? action
Living state and life cycle Distinguish siliceous remains from living organisms and interpret observed variation in a biological context.
Frustule occurrence, cell viability and reproductive state support different conclusions and actions.
Cell condition
Record direct evidence for living, damaged, preserved or empty material.
Viability evidence
Assign biological condition from stated observations or assays rather than the presence of a recognisable frustule alone.
- Does the observed material contain intact cell contents, an empty frustule or preparation-altered remains? measurement
- Which observations or assays support viability, and how could collection or preservation affect their interpretation? provenance
Growth and reproduction
Relate size distributions and reproductive observations to a documented population or culture.
Life-cycle-qualified variation
Record division, size variation and any reproductive structures without assigning a life stage from size alone.
- What evidence distinguishes life-cycle-related size variation from mixed taxa or environmental effects in this sample? boundary
- Were cell division, sexual reproduction or auxospore formation directly observed, and under what conditions? measurement
- What species-specific evidence, if any, supports distinguishing sexual forms in the material examined? boundary
Occurrence and material use Connect Amphora records to collection context and determine appropriate use of specimens or cultures.
Habitat interpretations and experimental decisions depend on taxonomic resolution, sample provenance and material condition.
Habitat and population evidence
Document where and how the material was found and what that establishes about a population.
Qualified occurrence
Keep collection evidence distinct from claims about residency, native range, ecological preference or conservation status.
- Where, when and from which substrate or water fraction was the material collected, using what method? provenance
- Do living-cell observations and repeated sampling support a local population, or only the presence of transported frustules? boundary
- Which taxon-specific evidence supports any native-range, habitat-preference or dated conservation-status claim? provenance
Specimen and culture decisions
Choose handling and interpretation appropriate to diagnostic material or a living culture.
Evidence-preserving use
Match preparation and culture actions to the intended observation while retaining a traceable basis for identification.
- Should material be retained alive, preserved with cell contents, or prepared for detailed frustule imaging to answer the current question? action
- What evidence establishes whether the culture is mixed, unialgal or axenic before attributing results to Amphora? boundary
- Which voucher, image series or culture accession will preserve the identification evidence after the proposed procedure? action
Evidence and external alignment What the world already says about this thing, gathered so the model can be checked against it.
A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.
Reported evidence
Findings from the breadth pass, kept separate from the structural claims.
Check these first
Recalled without web access and unsourced; every item is a lead to verify.
- The biological sense is inferred from PHY.LIV; the registry should confirm that the intended thing is the diatom genus.
- Verify the genus authority, publication date, accepted species and taxonomic identifiers before publication.
- No sources were consulted; species ranges, life cycles and conservation assessments remain unverified.
- Which of these check these first hold for the sense of amphora this model covers, and on what evidence? provenance
Identifiers and schemes
Recalled without web access and unsourced; every item is a lead to verify.
- GBIF taxon key - Numeric identifier for a taxon record - The identifier and accepted circumscription of Amphora require verification.
- Which of these identifiers and schemes hold for the sense of amphora this model covers, and on what evidence? provenance
Standards and regulation
Recalled without web access and unsourced; every item is a lead to verify.
- International Code of Nomenclature for algae, fungi, and plants (ICN), adopted through International Botanical Congresses, governs scientific naming.
- Which of these standards and regulation hold for the sense of amphora this model covers, and on what evidence? provenance
Real-world use
Recalled without web access and unsourced; every item is a lead to verify.
- Species identification in studies of benthic diatom communities.
- Some species contribute to diatom-based assessments of aquatic environmental conditions.
- Which of these real-world use hold for the sense of amphora this model covers, and on what evidence? provenance
Typical measurements
Recalled without web access and unsourced; every item is a lead to verify.
- Valve length and width - Species-dependent; no genus-wide range asserted - µm
- Stria density - Species-dependent - striae per 10 µm
- Which of these typical measurements hold for the sense of amphora this model covers, and on what evidence? provenance
Failure modes and hazards
Recalled without web access and unsourced; every item is a lead to verify.
- Identification can be unreliable without adequate microscopy of valve structure.
- Older records may use a broader genus circumscription than current classifications.
- Environmental preferences of an individual species cannot safely be generalized to the whole genus.
- Which of these failure modes and hazards hold for the sense of amphora this model covers, and on what evidence? provenance
Regional variation
Recalled without web access and unsourced; every item is a lead to verify.
- Species composition varies among freshwater, brackish and marine habitats.
- Which of these regional variation hold for the sense of amphora this model covers, and on what evidence? provenance
Neighbouring kinds and how to tell them apart
Recalled without web access and unsourced; every item is a lead to verify.
- amphora (vessel) - The vessel is a two-handled container; Amphora in this interpretation is a biological genus.
- diatom - Diatoms are the wider organism group; Amphora is one genus within it.
- Halamphora - A distinct diatom genus containing some species formerly classified in Amphora; separation requires taxonomic characters beyond overall cell shape.
- individual Amphora cell - An individual is one organism; the genus groups species and has no single population size or conservation status.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of amphora this model covers, and on what evidence? provenance
What the second pass must settle
- Does the originating record for vr.tr.amphora confirm the diatom genus Amphora rather than the pottery vessel, and is PHY.LIV correctly assigned?
- Which current taxonomic treatment should govern the genus boundary, accepted authorship and verified GBIF and NCBI identifiers where available?
- Which diagnostic characters reliably separate the intended Amphora concept from Halamphora and other similar genera, and which require electron microscopy?
- Which habitat, range, reproductive and conservation claims can be supported at genus level, and which must remain specific to a species or population?
- Does an existing Vercy world model already cover this taxon concept, requiring a registry link instead of a separate publication?