Description
Multiply nonnegative integer objects and visits with exact integer intermediates, require unavailableObjectVisits within that product, and subtract unavailable visits for usableObjectVisits.
Wildlife survey effort can use observer-hours, trap-nights, observation windows, or repeated visits. Equivalent effort applies a declared reporting rule and does not automatically correct detection probability.
Multiply nonnegative integer objects and visits with exact integer intermediates, require unavailableObjectVisits within that product, and subtract unavailable visits for usableObjectVisits.
When to use this tool
Use Survey Cover Object Exposure when you need one explicit herpetological survey-effort component.
How to use the tool and how it works
- Enter objects, visits, unavailableObjectVisits. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read nominalObjectVisits, usableObjectVisits. Use the output convention below.
Multiply nonnegative integer objects and visits with exact integer intermediates, require unavailableObjectVisits within that product, and subtract unavailable visits for usableObjectVisits.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| objects | Objects | Required. Safe integer; minimum 0. |
| visits | Visits | Required. Safe integer; minimum 0. |
| unavailableObjectVisits | Unavailable Object Visits | Required. Safe integer; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| nominalObjectVisits | Nominal Object Visits | Required. Safe integer. |
| usableObjectVisits | Usable Object Visits | Required. Safe integer. |
{
"input": {
"objects": 10,
"visits": 4,
"unavailableObjectVisits": 5
},
"output": {
"nominalObjectVisits": 40,
"usableObjectVisits": 35
}
}Limitations and assumptions
- Outputs are numeric counts subject to their contract; effort does not establish detection probability, object equivalence, or appropriate handling of wildlife.
- 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 the complete survey design, environmental conditions, detection methods, and appropriate wildlife protocols.
References
Similar or alternative tools
- Trap Night Partial Effort Term
Return full nights plus summed partial hours divided by hours per night.
- Cover Object Visit Gap
Select and sort times for selectedObject, subtract the reference from each adjacent gap, and return extremes with defined false and zero placeholders if fewer than two visits.