Why is there no critical load assigned for some features?

Critical loads have been established for many habitats and are based on the best available information. As such, there may be insufficient information to assign a critical load to all types of habitat on that specific site. However, linkages have been applied where possible. This also sometimes means that there is more than one critical load for a particular habitat. Where no comparable critical load is given, it is advised to seek site specific information from the relevant authority (e.g. conservation agency or site manager).

You can see examples of EUNIS habitat classes their critical loads in the habitats table.