Occurrencedata {MaxentVariableSelection}

CSV file with occurrence data

Description

Longitude and latitude values, as well as values of four environmental variables (from the Bio-ORACLE dataset; Tyberghein et al., 2012) for each of 98 occurrence sites (locations where a species was recorded).

Format

A data frame that specifies geographic locations and environmental conditions of 98 occurrence sites.

species

The species name is here set to 'bg', which stands for background

longitude

longitudinal coordinate

latitude

latitudinal coordinate

calcite

Mean calcite concentration (mol/m3)

parmean

Mean photosynthetically active radiation (Einstein/m2/day)

salinity

Mean salinity (PSS)

sstmax

Maximum sea surface temperature (degree celsius)

References

Tyberghein L, Verbruggen H, Pauly K, Troupin C, Mineur F and De Clerck, O (2012)
Bio-ORACLE: a global environmental dataset for marine species distribution modelling
Global Ecology and Biogeography 21:2 272–281.

Examples

occurrencelocations <- system.file("extdata",
                                   "Occurrencedata.csv",
                                   package="MaxentVariableSelection")
occurrencelocations <- read.csv(occurrencelocations,header=TRUE)
head(occurrencelocations)