recteal: Common Teal captured and Ringed in Abberton Reservoir, UK,...
In ClementCalenge/metroponcfs: Metropolis algorithm for model fitting

Description Usage Format Details References

Common Teal captured and Ringed in Abberton Reservoir, UK, and Camargue, France.

recteal

A list with the following elements:

recaptures: this element is a data.frame containing the following information for each recapture of common teal: (i) a variable named date, storing the number of years elapsed between the initial capture and recapture, (ii) a variable named Abberton, indicating whether the recaptured animal was initially captured at Abberton Reservoir, UK (=1) or in Camargue, southern France (=0), and (iii) two variables named x and y containing the coordinates of the recapture (coordinate system: Lambert azimuthal equal-area).
rotationMatrix: this 2x2 matrix M contains the two vectors cbind(m1, m2) used by Guillemain et al. to rotate the geographical coordinates in a new coordinate system (see Guillemain et al.). Thus, if x is a vector of length two containing the x and y coordinates of a location in the Lambert azimuthal equal-area system, z <- x%*%M contains the coordinates of this point in this new system.
inverseRotationMatrix: this 2x2 matrix R allows to transform the coordinates of a point from the new coordinate system to the old one. Thus, if z is a vector of length two containing the coordinates of a point in the new coordinate system, x <- z%*%R contains the coordinates of this point in the original Lambert azimuthal equal-area system.
knots: this vector contains the coordinates of the 26 knots in the new coordinate system used to define the B-spline basis in the paper of Guillemain et al.
lipum: a list containing the parameters of the updating mechanisms used in the Metropolis algorithm.

Dataset describing the recapture locations of common teals initially captured and ringed in two Western European places: (i) in Abberton Reservoir, UK, and (ii) in Camargue, sourthern France. See Guillemain et al. for a complete description of this dataset. To circumvent copyright issues, we provide here an altered version of the dataset used by these authors: we selected a random sample of 75% of the recaptures of the original data, keeping only the location information (i.e. only the x and y coordinates of the recaptures), and we added a random noise to these locations (we moved every bird recapture location randomly by a distance comprised between 0 and 100 km).

Guillemain M., Calenge C., Champagnon J. and Hearn R. in prep. Determining the boundaries and plasticity of migratory bird flyways: a Bayesian model for Common Teal Anas crecca in Western Europe.

ClementCalenge/metroponcfs documentation built on May 6, 2019, 12:05 p.m.