Description
Return coverage-adjusted observer effort and a flagged rate.
Biodiversity summaries depend on taxon concepts, sampling effort, detection and missing-status policies. Literal labels and observed shares can organize records while species identity, true abundance, occupancy and conservation status require appropriate ecological evidence and analysis.
Return coverage-adjusted observer effort and a flagged rate.
When to use this tool
Use Observer Effort Zero Coverage Flag when checking the stated biodiversity record, effort, count or support convention.
How to use the tool and how it works
- Enter observations, effort, coveredFraction. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read effectiveEffort, rateDefined, rate. Inspect rateDefined before interpreting the associated values.
Return coverage-adjusted observer effort and a flagged rate. Require nonnegative whole observations, effort >= 0 and coveredFraction in [0,1]; effectiveEffort = effort*fraction, rate divides or is zero with rateDefined false.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| observations | Observations | Required. Safe integer; minimum 0. |
| effort | Effort | Required. Finite number; minimum 0. |
| coveredFraction | Covered Fraction Unit: 1. | Required. Finite number; minimum 0; maximum 1. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| effectiveEffort | Effective Effort | Required. Finite number. |
| rateDefined | Rate Defined | Required. Boolean. |
| rate | Rate | Required. Finite number. |
{
"input": {
"observations": 3,
"effort": 10,
"coveredFraction": 0
},
"output": {
"effectiveEffort": 0,
"rateDefined": false,
"rate": 0
}
}Limitations and assumptions
- Positive observations with zero effort still produce an undefined placeholder; sampling representativeness and true detection rates are not assessed.
- 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
Use source-aware taxonomy, verified field records and a suitable sampling/detection model for ecological estimates, uncertainty or conservation conclusions.
References
Similar or alternative tools
- Survey Effort Coverage Weight
Return actual/reference survey effort weight.
- Species Count Effort Offset
Return effort-normalized taxon count and logarithmic effort offset.