Description
Return their overlap depth and divide by firstBottom-firstTop.
Habitat geometry describes lengths, overlaps and areas on explicit ideal shapes. An edge-to-area ratio and a root-depth overlap summarize different spatial relations; neither identifies a species-specific edge effect or functional connectivity. Supplied nonoverlap flags do not replace a geometric check.
Return their overlap depth and divide by firstBottom-firstTop.
When to use this tool
Use Perennial Root Zone Depth Overlap when checking the stated ideal habitat, buffer or interval geometry.
How to use the tool and how it works
- Enter firstTop, firstBottom, secondTop, secondBottom. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read overlapDepth, fractionOfFirst. Use the output convention below.
Require a positive first depth interval and nonnegative second interval. Return their overlap depth and divide by firstBottom-firstTop.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| firstTop | First Top | Required. Finite number. |
| firstBottom | First Bottom | Required. Finite number. |
| secondTop | Second Top | Required. Finite number. |
| secondBottom | Second Bottom | Required. Finite number. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| overlapDepth | Overlap Depth | Required. Finite number. |
| fractionOfFirst | Fraction Of First | Required. Finite number. |
{
"input": {
"firstTop": 0,
"firstBottom": 100,
"secondTop": 50,
"secondBottom": 150
},
"output": {
"overlapDepth": 50,
"fractionOfFirst": 0.5
}
}Limitations and assumptions
- Uses one-dimensional supplied depth intervals; no root-density profile or resource competition 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
Use mapped boundaries and appropriate complete spatial/ecological models for real habitat function or field layout.
References
Similar or alternative tools
- Landscape Connectivity Gap Two Patches
Return max(0,distance-radiiSum) and touchingOrOverlapping when distance<=radiiSum.
- Habitat Strip Edge Ratio
Return perimeter=2*(length+width) and perimeter/area=2*(1/length+1/width).