Espinasse et al. (2020) tested the application of isoscapes modelled from satellite data to the description of secondary production in the Northeast pacific. The output model fits in a 0.25° x 0.25° spatial grid covering the region spanning from 46 to 62°N and from 195 to 235°E and supporting delta 13C and delta 15N isoscapes from 1998 to 2017.
Format
heatmapdata is an object of class dataframe composed of 9206 observations of 9 variables.
- Latitude
Latitude coordinate of the station, in degrees
- Longitude
Longitude coordinate of the station, in degrees
- d13C
delta 13C modelled value
- d15N
delta 15N modelled value
- station
Station ID
- Years
Period corresponding to the calculation of trajectory metrics
- Angles
Angle alpha (i.e direction) in the stable isotope space
- Lengths
Net change values (i.e direction) in the stable isotope space
- Angles2
Angle alpha values (i.e direction) in the stable isotope space transformed for a potential use with function
geom_spoke
Details
This data sets is composed of trajectory metrics calculated by Sturbois et al. (2021) for all stations within all inter-annual consecutive periods between 1998 and 2017 calculated from the whole data set of Espinasse et al. (2020) for a 1° x 1° spatial grid.