inlabru (version 2.11.1)

seals: Seal pups

Description

This is a single transect of an aereal photo seal pup survey in the Greenland Sea

Usage

data(seals_sp)

Format

The data contain these objects:

points:

A SpatialPointsDataFrame Center locations of the photos

mesh:

An fm_mesh_2d enclosing the plane's transect

ice.data:

An SpatialPointsDataFrame with MODIS ice concentration estimates

ice.cv:

An covdata object with interpolated ice coverage data

References

Oigard, T. A. (2013) From pup production to quotas: current status of harp seals in the Greenland Sea. ICES Journal of Marine Science, doi.10.1093/icesjms/fst155.

Oigard, T. A. (2014) Current status of hooded seals in the Greenland Sea. Victims of climate change and predation?, Biological Conservation , 2014, 172, 29 - 36.

Examples

if (require(ggplot2, quietly = TRUE)) {
  ggplot() +
    geom_fm(data = seals_sp$mesh) +
    gg(seals_sp$points)
}