Nemaspec {marelacTeaching} | R Documentation

## Nematode species composition of 6 deep-sea sediments in the Mediterranean

### Description

Dataset of (Soetaert et al., 1991) with nematode species densities in Mediterranean deep-sea sediments, at depths ranging from 160 m to 1220 m.

The densities are expressed in individuals per 10 cm2.

Nematodes are small free-living worms (<1mm long), generally very abundant in all aquatic sediments.

### Usage

    Nemaspec

### Format

a data.frame, with stations as columns, species as rows.

There are 6 stations, for each station two replicates.

The stationname refers to the depth of the sediment and the replicate, e.g. M160b is a station at 160 metres depth, replicate b)

### Note

The densities are non-integer values.

Species are called "Genus spname"; as most species are undescribed, they are called "Genus M1", "Genus M2", etc...

### Author(s)

Karline Soetaert <k.soetaert@nioo.knaw.nl>

### References

Soetaert, K., Heip, C. and M. Vincx, 1991. Diversity of nematode assemblages along a mediterranean deep-sea transect. Marine Ecology Progress Series 75, 275-282.

### Examples

    head(Nemaspec)
    # select densities of species present in M160b
    st160b<-data.frame(Nemaspec$SPECIES,dens=Nemaspec$M160b)
    st160b<-st160b[st160b$dens!=0,]

    plot(cumsum(rev(sort(st160b$dens)/sum(st160b$dens))),
         main="dominance curve",
         xlab="species rank",ylab="cum freq")

[Package marelacTeaching version 1.1 Index]