Doubs {codep}

The Doubs Fish Data

Description

Fish community composition of the Doubs River, France.

Usage

data(Doubs)

Format

Contains three matrices:

Doubs.fish

The abundance of 27 fish species.

Doubs.env

Nine environmental variables (all quantitative).

Doubs.geo

Geographic information of the samples.

Details

Values in 'Doubs.fish' are counts of individuals of each of 27 species observed in a set of 30 sites located along the 453 km long Doubs River, France (see Verneaux 1973 for further details about fishing methods and effort).

Doubs.env

contains 11 quantitative variables, namely the slope ('slo'; 1/1000) and mean minimum discharge ('flo' m³/s) of the river, the pH of the water, its harness (Calcium concentration; 'har'; mg/L), phosphate ('pho'; mg/L), nitrate ('nit'; mg/L), and ammonium ('amm'; mg/L), concentration as well as its dissolved oxygen ('oxy'; mg/L) and biological oxygen demand ('bdo'; mg/L).

Doubs.geo

contains geographical information. 'Lon', the longitude and 'Lat', the latitude of the sample (degree) as well as 'DFS', its distance from the source of the river (km) and 'Alt', altitude (m above see level).

Source

Verneaux, 1973

References

Verneaux J. 1973. - Cours d'eau de Franche-Comté (Massif du Jura). Recherches écologiques sur le réseau hydrographique du Doubs. Essai de biotypologie. Thèse d'état, Besançon. 257 p.)

Verneaux, J.; Schmitt, V.; Verneaux, V. & Prouteau, C. 2003. Benthic insects and fish of the Doubs River system: typological traits and the development of a species continuum in a theoretically extrapolated watercourse. Hydrobiologia 490: 60-74

See Also

Borcard, D.; Gillet, F. & Legendre, P. 2011. Numerical Ecology with R. Springer, New-York, NY, USA.

Examples

data(Doubs)
summary(Doubs.fish)
summary(Doubs.env)
summary(Doubs.geo)