Ecological parameter: fish region (fiBS)

Parameter group: region related parameters

Explanation:
With the help of the fish region index concept developed in Austria by Schmutz et al. (2000), fish species occurring in running waters are characterised regarding their natural preferences for the different stream zonation regions from the epirhithral to the hypopotamal (Illies, 1961).

Schmutz, S., Kaufmann, M., Vogel, B. & Jungwirth, M. (2000): Methodische Grundlagen und Beispiele zur Bewertung der fischökologischen Funktionsfähigkeit österreichischer Fließgewässer. Universität für Bodenkultur, Wien: 210 S.
Illies, J. (1961): Versuch einer allgemeinen biozönotischen Gliederung der Fließgewässer. Int. Revue ges. Hydrobiol. 46 (2): 205-213.

Abbreviations:

Category name:	Abbreviations:	Explanation:
epirhithral	er	upper-trout region
metarhithral	mr	lower-trout region
hyporhithral	hr	grayling region
epipotamal	ep	barbel region
metapotamal	mp	bream region
hypopotamal	hp	brackish water region
FRI	FRI	species-specific fish region index
S2-FRI	S2-FRI	species-specific fish region variance

Assigned taxa for each higher systematic unit:

Taxagroup	Number of assigned taxa / total number of taxa - percentage
Acipenseriformes	1 / 13 - 7.6%
Anguilliformes	1 / 1 - 100%
Clupeiformes	2 / 18 - 11.1%
Cypriniformes	36 / 313 - 11.5%
Esociformes	1 / 3 - 33.3%
Gadiformes	1 / 1 - 100%
Gasterosteiformes	2 / 9 - 22.2%
Perciformes	8 / 94 - 8.5%
Petromyzontiformes	4 / 13 - 30.7%
Pleuronectiformes	1 / 3 - 33.3%
Salmoniformes	10 / 125 - 8%
Scorpaeniformes	1 / 16 - 6.2%
Siluriformes	1 / 7 - 14.2%