{
  "measurementTypes": [
    {
      "key": "presence_absence",
      "label": "Presence/absence",
      "allowedUnits": [],
      "allowedMeasurementValues": [
        "present",
        "absent",
        "detected",
        "not_detected",
        "unknown"
      ]
    },
    {
      "key": "relative_abundance",
      "label": "Relative abundance",
      "allowedUnits": [
        "percent",
        "dimensionless_ratio"
      ],
      "allowedMeasurementValues": []
    },
    {
      "key": "density",
      "label": "Density",
      "allowedUnits": [
        "per_square_meter",
        "per_cubic_meter",
        "kilogram_per_square_meter",
        "kilogram_per_cubic_meter"
      ],
      "allowedMeasurementValues": []
    },
    {
      "key": "biomass",
      "label": "Biomass",
      "allowedUnits": [
        "gram",
        "kilogram"
      ],
      "allowedMeasurementValues": []
    },
    {
      "key": "body_length",
      "label": "Body length",
      "allowedUnits": [
        "meter",
        "centimeter",
        "millimeter"
      ],
      "allowedMeasurementValues": []
    },
    {
      "key": "body_mass",
      "label": "Body mass",
      "allowedUnits": [
        "gram",
        "kilogram"
      ],
      "allowedMeasurementValues": []
    },
    {
      "key": "percent_cover",
      "label": "Percent cover",
      "allowedUnits": [
        "percent"
      ],
      "allowedMeasurementValues": []
    },
    {
      "key": "sample_area",
      "label": "Sample area",
      "allowedUnits": [
        "square_meter",
        "hectare",
        "square_kilometer"
      ],
      "allowedMeasurementValues": []
    },
    {
      "key": "sample_volume",
      "label": "Sample volume",
      "allowedUnits": [
        "cubic_meter",
        "liter",
        "milliliter"
      ],
      "allowedMeasurementValues": []
    },
    {
      "key": "distance",
      "label": "Distance",
      "allowedUnits": [
        "meter",
        "kilometer"
      ],
      "allowedMeasurementValues": []
    },
    {
      "key": "temperature",
      "label": "Temperature",
      "allowedUnits": [
        "degree_celsius",
        "kelvin"
      ],
      "allowedMeasurementValues": [
        "unknown"
      ]
    },
    {
      "key": "salinity",
      "label": "Salinity",
      "allowedUnits": [
        "psu"
      ],
      "allowedMeasurementValues": [
        "unknown"
      ]
    },
    {
      "key": "pH",
      "label": "pH",
      "allowedUnits": [
        "dimensionless_ratio"
      ],
      "allowedMeasurementValues": [
        "unknown"
      ]
    },
    {
      "key": "dissolved_oxygen",
      "label": "Dissolved oxygen",
      "allowedUnits": [
        "milligram_per_liter",
        "microgram_per_liter"
      ],
      "allowedMeasurementValues": [
        "below_detection_limit",
        "above_detection_limit",
        "unknown"
      ]
    },
    {
      "key": "conductivity",
      "label": "Conductivity",
      "allowedUnits": [
        "microsiemens_per_centimeter"
      ],
      "allowedMeasurementValues": [
        "below_detection_limit",
        "above_detection_limit",
        "unknown"
      ]
    },
    {
      "key": "turbidity",
      "label": "Turbidity",
      "allowedUnits": [
        "nephelometric_turbidity_unit"
      ],
      "allowedMeasurementValues": [
        "below_detection_limit",
        "above_detection_limit",
        "unknown"
      ]
    },
    {
      "key": "nutrient_concentration",
      "label": "Nutrient concentration",
      "allowedUnits": [
        "milligram_per_liter",
        "microgram_per_liter",
        "milligram_per_kilogram",
        "parts_per_million"
      ],
      "allowedMeasurementValues": [
        "below_detection_limit",
        "above_detection_limit",
        "unknown"
      ]
    }
  ]
}