codep (version 0.7-1)

Doubs: The Doubs fish data

Description

Fish community composition of the Doubs River, France.

Usage

Doubs

Format

Contains three matrices: Doubs.fish the abundance of 27 fish species.

Doubs.env 9 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 m<U+00B3>/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).

References

Verneaux J. 1973. - Cours d'eau de Franche-Comt<U+00E9> (Massif du Jura). Recherches <U+00E9>cologiques sur le r<U+00E9>seau hydrographique du Doubs. Essai de biotypologie. Th<U+00E8>se d'<U+00E9>tat, Besan<U+00E7>on. 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

# NOT RUN {
data(Doubs)
summary(Doubs.fish)
summary(Doubs.env)
summary(Doubs.geo)
# }