Use Quadrat Density when you need to compute organism density as the counted individuals divided by the quadrat area. Enter Organisms counted and Quadrat area using the definitions and units below so the result can be reproduced.

Organisms counted

An integer count or setting greater than or equal to 0, expressed in individuals.

Quadrat area

A finite measured or assumed value greater than or equal to 5e-324, expressed in m2.

The published tool contract uses this rule: Compute organism density as the counted individuals divided by the quadrat area.

Density

The calculated density in individuals/m2.

A ratio or percentage can conceal the scale of its numerator and denominator and becomes sensitive to measurement error when the denominator is small.

Retain the original Organisms counted and Quadrat area values and their units alongside the result. Bark Density is useful when you instead need to compute bark density in grams per cubic centimetre as oven-dry bark mass divided by bark volume. Canopy Bulk Density provides another view by helping you compute canopy bulk density in kilograms per cubic metre as the canopy fuel mass divided by the canopy volume.

• Bark Density

  Compute bark density in grams per cubic centimetre as oven-dry bark mass divided by bark volume.

• Canopy Bulk Density

  Compute canopy bulk density in kilograms per cubic metre as the canopy fuel mass divided by the canopy volume.

• Stomatal Density

  Compute stomatal density in stomata per square millimetre as the counted stomata divided by the microscopic field area.