Description
Calculate survival among assessed restoration plantings.
Conservation observations depend on sampling effort, specimen provenance, spatial precision and the population being assessed. Survivors among assessed plants differ from survivors among all planted plants. Coordinate rounding or cell assignment changes a display location without guaranteeing protection, and a time-gap threshold does not establish independent observations.
Calculate survival among assessed restoration plantings.
When to use this tool
Use Restoration Survivor Count Denominator when you already have plantedCount, assessedCount, survivorsAmongAssessed and need to calculate survival among assessed restoration plantings.
How to use the tool and how it works
- Enter plantedCount, assessedCount, survivorsAmongAssessed. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read assessedSurvivalFraction, unassessedCount. Use the output convention below.
Require safe whole planted>=1, assessed in [1,planted] and survivors within assessed; return survivors/assessed and planted-assessed unassessed count.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| plantedCount | Planted Count | Required. Safe integer; minimum 1. |
| assessedCount | Assessed Count | Required. Safe integer; minimum 1. |
| survivorsAmongAssessed | Survivors Among Assessed | Required. Safe integer; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| assessedSurvivalFraction | survivorsAmongAssessed/assessedCount, not survivors/plantedCount. | Required. Finite number. |
| unassessedCount | Unassessed Count | Required. Safe integer. |
{
"input": {
"plantedCount": 100,
"assessedCount": 80,
"survivorsAmongAssessed": 60
},
"output": {
"assessedSurvivalFraction": 0.75,
"unassessedCount": 20
}
}Limitations and assumptions
- The denominator is assessed plants, not all planted plants. No survival among unassessed plants, representativeness, cause or restoration success is inferred.
- 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 field records, specimens, survey design and location-access requirements. Use the complete ecological and spatial method for population or protection decisions; local rates, interval flags and source-qualified labels do not supply it.
References
Similar or alternative tools
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