Information

Ecological parameter:  endemism

Parameter group: ecoregion related parameters

Explanation:
Endemism describes species with limited distribution. Endemic species are often characterised by a restricted ecological niche and limited dispersal capacity. Two types of endemism are recorded: (1) Ecoregion-endemism (large scale endemism): taxa occurring in only one ecoregion (sensu Illies 1967, 1978), (2) Micro-endemism: taxa restricted e.g. to a single mountain range within an ecoregion.

Illies, J. (ed.) 1967. Limnofauna Europaea. Eine Zusammenstellung aller die europäischen Binnengewässer bewohnenden mehrzelligen Tierarten m. Angaben über d. Verbreitung u. Ökologie. 1st Edition. Gustav Fischer Verlag, Stuttgart. 474pp. Illies, J. (ed.) 1978. Limnofauna Europaea. A Checklist of the Animals Inhabiting European Inland Waters, with an Account of their Distribution and Ecology. 2nd Edition. Gustav Fischer Verlag, Stuttgart. 552pp.


Classification system: modified presence/absence assignment system

Abbreviations:
Category nameAbbreviationExplanation
ecoregion-endemismlslarge scale endemism
ecoregion numberernumber of the ecoregion, in which the taxon occurs
micro-endemismmicmicro-endemism
Assigned taxa for each higher systematic unit
TaxagroupNumber of assigned taxa / total number of taxa - percentage
Ephemeroptera122 / 344 - 35.4%
Plecoptera319 / 571 - 55.8%
Trichoptera756 / 1428 - 52.9%
Chironomidae171 / 1278 - 13.3%