A glossary of definitions for terms relating to biodiversity, ecosystems services and conservation.
All definitions are referenced, where possible preference has been given to internationally recognised definitions (for example those defined by international conventions or agreements). The terms have been chosen to support understanding of biodiversity and conservation issues, and terms relating to biodiversity loss are complemented by those relating to conservation responses supported by international conservation organisations, governments, scientists and business sectors.
More detailed explanations are provided for a number of key terms, to provide further background information.
The terms can be filtered by category to aid in the navigation of the many definitions.
A 'race' of a species which interbreed and are genetically distinct from other groups within the same species. They are allocated a third Latin name, after the two from their parent species (e.g. Leontopodium nivale subsp. alpinum). There are currently no systematic criteria for identifying subspecies except that they must be geographically distinct populations and, in some way, different from other populations of the parent species.