Description
Scale a supplied ecological count to actual and reference effort units.
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.
Scale a supplied ecological count to actual and reference effort units.
When to use this tool
Use Ecological Effort Normalized Count when you already have observedCount, suppliedEffort, referenceEffort and need to scale a supplied ecological count to actual and reference effort units.
How to use the tool and how it works
- Enter observedCount, suppliedEffort, referenceEffort. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read countPerEffort, countPerReferenceEffort. Use the output convention below.
Require a nonnegative safe observedCount, positive suppliedEffort and referenceEffort>=0; rate=count/effort, referenceTerm=rate*referenceEffort.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| observedCount | Observed Count | Required. Safe integer; minimum 0. |
| suppliedEffort | Supplied Effort | Required. Finite number; strictly above 0. |
| referenceEffort | Reference Effort | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| countPerEffort | Count Per Effort | Required. Finite number. |
| countPerReferenceEffort | Observed count/actual effort*reference effort; can be fractional, assuming a constant comparable rate. | Required. Finite number. |
{
"input": {
"observedCount": 30,
"suppliedEffort": 6,
"referenceEffort": 10
},
"output": {
"countPerEffort": 5,
"countPerReferenceEffort": 50
}
}Limitations and assumptions
- The reference term may be fractional. Constant rate and comparable effort are assumptions; no catchability, detection correction or missing count is estimated.
- 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.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
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
Similar or alternative tools
- Pitfall Trap Rainout Effort Correction
Calculate rainout-adjusted trap effort and a conditional catch rate.
- Ecological Trait Abundance Contribution
Calculate one taxon's abundance-weighted trait contribution.