Description
Remove shared credit from two habitat-credit quantities.
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.
Remove shared credit from two habitat-credit quantities.
When to use this tool
Use Habitat Credit Double Count Term when checking a supplied conservation-monitoring, geometry or evidence-basis convention.
How to use the tool and how it works
- Enter firstCredit, secondCredit, sharedCredit, withheld. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read uniqueCredit, availableCredit. Use the output convention below.
Remove shared credit from two habitat-credit quantities. Require nonnegative credits/withheld and sharedCredit <= min(first,second); uniqueCredit = first+second-shared, availableCredit = unique-withheld.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| firstCredit | First Credit | Required. Finite number; minimum 0. |
| secondCredit | Second Credit | Required. Finite number; minimum 0. |
| sharedCredit | Shared Credit | Required. Finite number; minimum 0. |
| withheld | Withheld | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| uniqueCredit | Unique Credit | Required. Finite number. |
| availableCredit | Available Credit | Required. Finite number. |
{
"input": {
"firstCredit": 100,
"secondCredit": 80,
"sharedCredit": 30,
"withheld": 10
},
"output": {
"uniqueCredit": 150,
"availableCredit": 140
}
}Limitations and assumptions
- Available credit may be negative; overlap and withholding are supplied, not a verified environmental credit or legal entitlement.
- 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
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