Description
Return nominal and factor-corrected plankton net volume.
Aquatic sampling expands observed counts using supplied area, filtered volume or processed fractions. Net efficiency, slip and grain-class boundaries affect that accounting. A scaled count or one-point class assignment does not establish true population abundance, detection probability or a universal substrate classification.
Return nominal and factor-corrected plankton net volume.
When to use this tool
Use Plankton Net Volume Factor when checking the stated aquatic sampling-volume, density or class-boundary convention.
How to use the tool and how it works
- Enter mouthArea, towDistance, measuredFlowFactor, efficiencyFraction. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read geometricVolume, correctedVolume. Use the output convention below.
Return nominal and factor-corrected plankton net volume. Require nonnegative mouthArea/towDistance/measuredFlowFactor and efficiencyFraction in [0,1]; geometricVolume = area*distance, corrected multiplies both factors.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| mouthArea | Mouth Area | Required. Finite number; minimum 0. |
| towDistance | Tow Distance | Required. Finite number; minimum 0. |
| measuredFlowFactor | Nonnegative supplied multiplier on geometric swept volume; may exceed one. | Required. Finite number; minimum 0. |
| efficiencyFraction | Efficiency Fraction | Required. Finite number; minimum 0; maximum 1. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| geometricVolume | Geometric Volume | Required. Finite number. |
| correctedVolume | Corrected Volume | Required. Finite number. |
{
"input": {
"mouthArea": 2,
"towDistance": 10,
"measuredFlowFactor": 0.8,
"efficiencyFraction": 0.5
},
"output": {
"geometricVolume": 20,
"correctedVolume": 8
}
}Limitations and assumptions
- The flow factor may exceed one; calibration, net filtration and representative organism capture 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 verified field methods, calibrated sampling efficiency and an appropriate statistical or classification scheme for abundance and ecological assessment.
References
Similar or alternative tools
- Plankton Net Filtration Efficiency Term
Return filtered net volume and observed organism density.
- Plankton Count Volume Factor
Scale an observed plankton count to a reference volume.