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Amphibian Body Mass Hydration Reference Gap Tool

Explicit measured water-loss addback relative to a supplied reference mass, without inferring hydration status.

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Description

Add the supplied water loss to observed mass, returning observed and corrected gaps from referenceMass.

Reptile and amphibian morphometrics use landmarks, measurement paths, image scales, and supplied correction models. A numeric adjustment does not establish anatomy, growth, health, or animal welfare.

Add the supplied water loss to observed mass, returning observed and corrected gaps from referenceMass.

When to use this tool

Use Amphibian Body Mass Hydration Reference Gap when you need one documented animal measurement component.

How to use the tool and how it works

  1. Enter observedMass, referenceMass, waterLossMass. Use the units and conventions below.
  2. Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
  3. Read correctedMass, observedGap, correctedGap. Use the output convention below.

Require nonnegative observedMass, referenceMass, and waterLossMass. Add the supplied water loss to observed mass, returning observed and corrected gaps from referenceMass.1

Input fieldMeaning and unitsAccepted input
observedMassObserved MassRequired. Finite number; minimum 0.
referenceMassReference MassRequired. Finite number; minimum 0.
waterLossMassWater Loss MassRequired. Finite number; minimum 0.
Output fieldInterpretationReturned shape
correctedMassCorrected MassRequired. Finite number.
observedGapObserved GapRequired. Finite number.
correctedGapCorrected GapRequired. Finite number.
json
{
  "input": {
    "observedMass": 9,
    "referenceMass": 10,
    "waterLossMass": 0.5
  },
  "output": {
    "correctedMass": 9.5,
    "observedGap": -1,
    "correctedGap": -0.5
  }
}

Limitations and assumptions

  • All masses share units; water loss is assumed rather than estimated and the result does not assess hydration, health, or a safe intervention.
  • 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

Check measurement conventions, species-specific evidence, uncertainty, and appropriate animal-care expertise before biological or welfare decisions.

References

  1. Calculation and input contract: herpetology/amphibian-body-mass-hydration-reference-gap — tool.io

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