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Sound and independent information
on the environment

Epirhithral and metarhithral streams

English name: Epirhithral and metarhithral streams

Description (English)

Upper and middle reaches of montane and upland streams, characterised by turbulent, irregular flow, by diurnal and annual temperature variations higher than in the crenon (unit C2.16), and by aquatic biocoenoses largely dominated by Turbellaria, Ephemeroptera, Plecoptera, Trichoptera, Diptera, by Bryophyta and epilithic Bacillariophyta, Cyanophycaea, Rhodophyta and Chlorophyta algae, with few, specialised, emergent macrophytes (units C2.25-C2.28). The unit corresponds to the "Trout zone" or "Salmonid zone" of western European ichthyological classifications.

Quick facts

  • EUNIS habitat type (code C2.21)

Vegetation types

Not available

Species mentioned in habitat description

Not available

Other classifications

Relationships with other classifications

Classification Code Habitat type name Relationship type
Palaearctic Habitat Classification 200112 24.12 Epirhitral and metarhitral streams source
CORINE Land Cover 5.1.1. Water courses n/a
Milieux Naturels de Suisse 1998 1.2.3 Zone inférieure de la truite (métarhitron) narrower
Milieux Naturels de Suisse 1998 1.2.4 Zone supérieure de la truite (épirhitron) narrower
Biotopes of Slovakia 1996 8120000 Bystrina horská (epiritrál) n/a
Biotopes of Slovakia 1996 8131000 Podhorský potok (metaritrál) n/a
For relation to plant communities (syntaxa), see Vegetation types

History

Classification Code Habitat type name Relationship type
EUNIS Habitat Classification 200410 C2.21 Epirhithral and metarhithral streams same
EUNIS Habitat Classification 200308 C2.21 Epirhithral and metarhithral streams same
EUNIS Habitat Classification 200202 C2.21 Epirhithral and metarhithral streams same
EUNIS Habitat Classification 199910 C2.21 Epirhithral and metarhithral streams same
EUNIS Habitat Classification 199811 C2.22 Epirhitral and metarhitral streams same
EUNIS Habitat Classification 199712 C2.22 Epirhitral and metarhitral streams same
Palaearctic Habitat Classification 199905 24.12 Epirhitral and metarhitral streams same
Palaearctic Habitat Classification 1997 24.12 Epirhitral and metarhitral streams same
Palaearctic Habitat Classification 1996 24.12   same
Palaearctic Habitat Classification 1993 24.12   same
CORINE Biotopes Classification 1991 24.12   same
CORINE Biotopes Classification 1989 24.12   same
European Environment Agency (EEA)
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1050 Copenhagen K
Denmark
Phone: +45 3336 7100