HellCor (version 1.3)

Chagos: Coral fish, seabirds and reef productivity study by Graham et al (2018)

Description

Data set investigated in Graham et al (2018). It contains several variables describing fish and seabirds populations on twelve islands of the Chagos Archipelago (British Indian Ocean Territory).

Usage

data(Chagos)

Format

A data frame with 12 observations on the following 7 variables.

Atoll

Factor with 3 levels. Atoll containing several islands.

Island

Factor with 12 levels. Name of the island.

Treatment

Factor with 2 levels. Presence or absence of rats on the island.

Seabirds_ha

Numeric vector of the number of birds per hectare of island.

kg_N_ha_yr

Numeric vector of nitrogen input (in kg) by seabirds per hectare of island over a one year period.

Number_of_fishes

Integer vector of the number of fishes recorded during underwater visual surveys along the reef crest of each island on the lagoonal side of each atoll.

biomass

numeric vector. Fish counts were converted into biomass using published length-weight relationships from FishBase.

References

Graham N. A. J., Wilson S. K., Carr P., Hoey A. S., Jennings S., MacNeil M. A. (2018). Seabirds enhance coral reef productivity and functioning in the absence of invasive rats. Nature 559, 250--253.

Examples

# NOT RUN {
data(Chagos)
# }