Marine Habitat Diversity Indicator (MHDI)


The MHDI is an indicator highlighting marine areas with potentially highest habitat diversity. Being the logarithm of the standard deviation of the bathymetry, it is dimensionless.
The MHDI is computed for each marine and coastal protected areas of size ≥ 50 km2.

The MHDI is computed for each marine and coastal protected areas of size ≥ 50 km2 using the following input data:

  • UNEP-WCMC and IUCN (2017). Protected Planet: The World Database on Protected Areas (WDPA) [On-line], [October/2017], Cambridge, UK: UNEP-WCMC and IUCN. Available at: www.protectedplanet.net.
  • Weatherall P. et al. (2014). A new digital bathymetric model of the world's oceans. Earth and Space Science, 2, doi:10.1002/2015EA000107. Dataset available online as GEBCO 2014 at: https://www.gebco.net/data_and_products/gridded_bathymetry_data/