epiphyte
Enable an AI agent to recognise an epiphytic organism, assess its dependence on its growing position, and select evidence-supported monitoring or care actions.
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.
Researched by: Codex
Purpose and description
Enable an AI agent to recognise an epiphytic organism, assess its dependence on its growing position, and select evidence-supported monitoring or care actions.
It can be Classify an observed occurrence provisionally and specify the evidence needed to resolve its epiphytic status.; Map and revisit an individual or patch without disturbing its attachment.; Compare moisture, light and attachment observations with condition changes to prioritise investigation.; Plan species-supported watering, shading or mounting adjustments in cultivation.; Assess whether pruning, support replacement or relocation would disrupt attachment or resource access.; Document an authorised intervention and evaluate subsequent survival, attachment and growth..
Distinguishing features
Establish that the organism is growing on a plant, rather than merely touching it or being temporarily lodged there; non-parasitic growth on other plants is the core working distinction. [Kew plant growth-form overview](https://www.kew.org/sites/default/files/2023-10/State%20of%20the%20World%27s%20Plants%20and%20Fungi%202023_V2.pdf)
Inspect the attachment interface and relevant identification evidence for parasitic extraction; contact with bark alone does not establish either parasitism or its absence.
Trace roots or other connections toward ground soil and record establishment history before distinguishing persistent epiphytism, a temporary epiphytic phase and ordinary terrestrial climbing.
Separate the observed growing surface from the organism's known habits: a specimen growing on rock or an artificial mount does not by itself demonstrate a natural epiphytic occurrence.
Do not require conspicuous aerial roots as a universal recognition test: some epiphytic bromeliads have reduced or absent roots. [Kew Bromeliaceae account](https://powo.science.kew.org/taxon/urn%3Alsid%3Aipni.org%3Anames%3A30000083-2/general-information)
Scope
+ Evidence that an organism grows on another plant without parasitic extraction from its living tissues
+ Current and historical connections to ground soil, including uncertainty about life-stage changes
+ Attachment position, supporting surface and local substrate
+ Water and nutrient acquisition at the occupied growing site
+ Condition, establishment and reproduction interpreted against epiphytic habit
+ Conditions for observation, cultivation, relocation or removal
- Full taxonomic descriptions and species identification systems
- Whole-organism assessment and management of the supporting plant
- Parasitic plants and their mechanisms of host exploitation
- Terrestrial climbers or rock-dwelling occurrences without evidence of an epiphytic phase
- Whole-canopy community inventories and ecosystem nutrient budgets
- Land ownership, collection permits and conservation classifications except as linked action constraints
Characteristics
- Epiphytic-status evidence
- supported | provisional | contradicted | unresolved; evidence and observation date Prevents classification from a common name or a single photograph alone.
- Observation unit
- individual | clump | delimited patch | unresolved Keeps growth and survival comparisons consistent when individuals are difficult to distinguish.
- Supporting plant and occupied position
- supporting-plant reference; trunk, branch, twig, leaf or other recorded position Locates the occurrence and links changes in support to changes in epiphyte condition.
- Ground-soil connection
- present | absent after inspection | not observable | unknown; dated history where available Helps distinguish current resource access from inferred lifetime growth habit.
- Attachment mechanism and integrity
- observed mechanism; secure | partly detached | detached | unresolved Determines whether handling or support disturbance could dislodge the organism.
- Local substrate
- exposed plant surface | trapped organic material | associated vegetation mat | cultivation medium | mixed | unknown Distinguishes physical support from the material surrounding absorptive surfaces.
- Water-access pathway
- recorded inputs and absorptive surfaces, each marked observed, inferred or unknown Allows care decisions to reflect the actual organism rather than a generic air-plant assumption.
- Local drying interval
- hours between wetting and a defined dryness endpoint; method and weather context Supports comparisons of moisture exposure before and after environmental changes.
- Growing-site microclimate
- temperature in °C, relative humidity in %, photosynthetic photon flux density in µmol m−2 s−1; sampling position and period Connects observed condition to conditions at the organism rather than a distant weather station.
- Condition trajectory
- improving | stable | declining | unresolved; dated tissue, attachment and growth observations Separates a persistent appearance from an active deterioration requiring investigation.
- Establishment and reproductive state
- newly arrived | establishing | established | reproductive | senescent | unresolved; taxon-appropriate evidence Distinguishes temporary persistence from successful establishment and informs disturbance timing.
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 · 10 layers · 10 findings · 20 questions.
Epiphytic status Determine whether the occurrence expresses an epiphytic habit and how firmly that determination is supported.
Growth on a plant surface alone does not resolve parasitism, terrestrial climbing or a temporary life stage.
Support and nutrition boundary
Separate physical support from parasitic use of living supporting-plant tissues.
Non-parasitic attachment evidence
Record the observed interface and the evidence supporting or challenging a non-parasitic interpretation.
- What evidence shows that this organism is established on the supporting plant rather than merely resting against it? definition
- What observation or identification evidence distinguishes attachment from parasitic extraction, and what remains unexamined? boundary
Habit through development
Distinguish the current growing condition from the organism's establishment history.
Ground connection history
Record soil connections and their timing without inferring an entire life cycle from the present state.
- Can any root or other resource connection be traced to ground soil, and how complete was the inspection? measurement
- What evidence establishes where the organism began growing and whether its ground connection subsequently changed? provenance
Attachment and growing site Represent the specific plant surface and attachment that sustain the occurrence.
An epiphyte's persistence depends partly on a support that can grow, shed surfaces, move or fail.
Occupied surface
Locate the organism and describe the material immediately beneath and around it.
Support position and substrate
Link the supporting plant to a repeatably identifiable growing position and local substrate.
- Which plant and surface support this occurrence, and how can its height, orientation and position be relocated? measurement
- Is the organism attached to exposed plant tissue, trapped organic material or an associated vegetation mat? definition
Attachment stability
Assess the attachment interface and local support changes relevant to dislodgement.
Detachment exposure
Record attachment integrity and observable threats without treating non-parasitism as proof of harmlessness.
- Which structures hold the organism in place, and what evidence indicates loosening, breakage or support-surface loss? measurement
- Would handling, pruning or mount replacement disrupt attachment or require an assessment of the supporting plant? action
Water and nutrient access Describe resource inputs, absorptive pathways and retention at the growing site.
A model cannot derive watering or feeding requirements from the epiphyte label alone.
Water input and retention
Track wetting events and water persistence around the organism's relevant surfaces.
Wetting and drying pattern
Identify actual water access and drying behaviour without assuming a universal uptake mechanism.
- Which inputs wet the organism or its substrate, and which absorptive surfaces are supported by observations or taxon-specific evidence? provenance
- How long do relevant surfaces, substrate or water-holding structures remain wet after a recorded input? measurement
Nutrient access pathways
Distinguish plausible nutrient sources from demonstrated uptake and dependencies.
Nutrient source evidence
Record candidate nutrient inputs and any established microbial contribution without assuming these occur in every epiphyte.
- What evidence supports nutrient access from deposited material, local substrate, water inputs or cultivation inputs? provenance
- Does this organism have a demonstrated microbial dependency that would constrain cleaning, substrate replacement or feeding? action
Microhabitat and condition Relate exposure and biological observations to the state of the epiphytic occurrence.
Condition must be interpreted at the occupied surface and against the organism's own developmental and seasonal context.
Local exposure
Characterise environmental conditions at the organism and changes caused by surrounding vegetation or cultivation.
Exposure change
Record local light, temperature and humidity alongside relevant changes in shade and airflow.
- What light, temperature and humidity measurements represent the actual growing position across relevant daily or seasonal variation? measurement
- Did canopy opening, relocation or cultivation changes precede an observed change in drying or condition? provenance
Growth and persistence
Separate establishment, normal variation and deterioration through repeat observations.
Condition and establishment trajectory
Track taxon-appropriate signs of growth, reproduction, tissue loss and attachment development.
- What changes in live extent, new growth, attachment and reproductive structures occur within the same observation unit? measurement
- What evidence distinguishes normal seasonal or developmental change from drying injury, decay or another unresolved cause of decline? boundary
Care and disturbance decisions Translate epiphyte-specific observations into justified actions and follow-up checks.
Interventions can change attachment, moisture access and exposure simultaneously, so their prerequisites and outcomes must be explicit.
Intervention prerequisites
Establish what supports a proposed care or disturbance action for this occurrence.
Action suitability
Connect proposed watering, shading, mounting or removal to a documented need and applicable constraints.
- Which observed condition and taxon-specific evidence justify the proposed intervention? action
- What attachment, substrate, supporting-plant and linked permission constraints must be satisfied before acting? action
Post-intervention establishment
Evaluate whether the organism persists after its growing conditions are altered.
Intervention outcome
Compare baseline and follow-up observations at an interval justified for the organism and intervention.
- After intervention, how have attachment, wetting and drying, tissue condition and new growth changed? measurement
- What evidence would justify continuing, modifying or stopping the intervention, and when should it be reassessed? action
What the second pass must settle
- Does this registry entry include nonvascular plants, lichens and aquatic epiphytic organisms, or should its initial operational scope be restricted to vascular plants?
- How should hemiepiphytes, facultative epiphytes and accidental epiphytic occurrences be represented without creating unsupported registry splits?
- Should occurrences on dead plant material or artificial mounts count as epiphytic occurrences, or only as cultivation or substrate states of an organism with an established epiphytic habit?
- Which taxon-specific evidence can reliably distinguish normal drying responses and seasonal tissue change from injury, and support intervention thresholds?
- What observation unit and monitoring interval can distinguish temporary survival from successful establishment in clonal or intermingled epiphyte patches?