Biodiversity & Conservation

Habitat Intolerance

The susceptibility of a habitat, community or species (i.e. the components of a biotope) to damage, or death, from an external factor. Intolerance must be assessed relative to change in a specific factor.

Rank Definition
High Species important for the structure and/or function of the biotope, or its identification ("important characterizing" species), are likely to be killed and/or the habitat is likely to be destroyed by the factor under consideration.
Intermediate The population(s) of species important for the structure and/or function of the biotope, or its identification ("important characterizing" species), may be reduced or degraded by the factor under consideration, the habitat may be partially destroyed, or the viability of a species population, diversity and function of a community may be reduced.
Low Species important for the structure and/or function of the biotope, or its identification ("important characterizing" species), will not be killed or destroyed by the factor under consideration and the habitat is unlikely to be damaged. However, the viability of a species population or the diversity / functionality in a community will be reduced.
Tolerant The factor does not have a detectable effect on the structure and/or function of a biotope or the survival or viability of species important for the structure and/or function of the biotope or its identification.
Tolerant* The extent or species richness of a biotope may be increased or enhanced by the factor.
Not relevant Intolerance may be assessed as not relevant where communities and species are protected or physically removed from the factor (for instance circalittoral communities are unlikely to be affected by increased emergence regime).
Insufficient information