Description
Return restoration survival share under an unknown-status policy.
Conservation monitoring depends on survey effort, detection assumptions, area/time bases and explicit unknown-status policies. A local probability or coverage ratio describes supplied observations and models without establishing population abundance, ecological success or legal protection.
Return restoration survival share under an unknown-status policy.
When to use this tool
Use Restoration Survival Unknown Base Flag when checking a supplied conservation-monitoring, geometry or evidence-basis convention.
How to use the tool and how it works
- Enter alive, dead, unknown, includeUnknown. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read denominator, survivalShare. Use the output convention below.
Return restoration survival share under an unknown-status policy. Require nonnegative whole alive/dead/unknown and positive alive+dead; denominator = alive+dead+(includeUnknown ? unknown : 0), survivalShare = alive/denominator.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| alive | Alive | Required. Safe integer; minimum 0. |
| dead | Dead | Required. Safe integer; minimum 0. |
| unknown | Unknown | Required. Safe integer; minimum 0. |
| includeUnknown | Include Unknown | Required. Boolean. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| denominator | Denominator | Required. Safe integer. |
| survivalShare | Survival Share Unit: 1. | Required. Finite number. |
{
"input": {
"alive": 60,
"dead": 20,
"unknown": 20,
"includeUnknown": false
},
"output": {
"denominator": 80,
"survivalShare": 0.75
}
}Limitations and assumptions
- Even including unknown requires a positive known base; unknown survival and actual ecological outcomes are not 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
Use an appropriate ecological sampling and detection model, verified field records and actual habitat geometry for substantive conservation inference.
References
Similar or alternative tools
- Restoration Plot Area Weight
Return plot area share and its count contribution.
- Public Protected Area Time Share
Return area-time share under active designation flags.