Description Usage Format Details References
Common Teal captured and Ringed in Abberton Reservoir, UK, and Camargue, France.
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A list with the following elements:
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).
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.
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.
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.
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.
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