Nemaspec {marelac} | R Documentation |
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.
Nemaspec
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)
The densities are non-integer values.
Species are called "Genus spname"; as most species are undescribed, they are called "Genus M1", "Genus M2", etc...
Karline Soetaert <k.soetaert@nioo.knaw.nl>
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.
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")