Description
Distinguish not surveyed, detected and not detected records.
Ecological records need explicit sampling units, detection states, effort denominators, interval geometry and trait/abundance bases. Nondetection differs from absence, and shared sampling-unit labels do not alone diagnose pseudoreplication. A one-axis overlap or single weighted contribution is only a limited component of a broader ecological analysis.
Distinguish not surveyed, detected and not detected records.
When to use this tool
Use Occupancy Detection Non Detection Code when you already have surveyed, detected and need to distinguish not surveyed, detected and not detected records.
How to use the tool and how it works
- Enter surveyed, detected. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read code. Use the output convention below.
Require detected to imply surveyed; return not-surveyed first, otherwise detected or not-detected.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| surveyed | Surveyed | Required. Boolean. |
| detected | Detected | Required. Boolean. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| code | Nondetection is distinct from not-surveyed and does not establish ecological absence. | Required. Text; maximum UTF-16 length 8192. |
{
"input": {
"surveyed": true,
"detected": false
},
"output": {
"code": "not-detected"
}
}Limitations and assumptions
- Nondetection is not biological absence or zero occupancy. No survey is performed and detection probability is not modeled.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
Alternative or Complementary methods
Review original survey records, sampling design, specimens and calibration definitions for an ecological conclusion. Use complete detection, population, community or process models as appropriate; local count rates and source labels do not infer unobserved states or ecological mechanisms.
References
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