track_CAGA_005

Tracking data recorded with a GPS device (i-GotU GT-600, Mobile Action
Technology Inc., Taipei, Taiwan). Regular step duration at 5s.
Behaviour data recorded with a video camera (Camsports nano, CamsportsTM,
Estrablin, France). Observations of taking off, landing and diving, from wich
three behavioural states were infered: flying, sitting on the water, diving.
Recording during the first 90 min (short autonomy of camera) of the trip.

datasets

Prediction of behaviour from movement
characteristics using observation and random forest for the analyses of movement
data in ecology.
From movement information (speed, bearing...) the model predicts the
observed behaviour (movement, foraging...) using random forest. The
model can then extrapolate behavioural information to movement data
without direct observation of behaviours.
The specificity of this method relies on the derivation of multiple predictor variables from the
movement data over a range of temporal windows. This procedure allows to capture
as much information as possible on the changes and variations of movement and
ensures the use of the random forest algorithm to its best capacity. The method
is very generic, applicable to any set of data providing movement data together with
observation of behaviour.

Laurent Dubroca

Movement to Behaviour Inference using Random Forest

Andréa Thiebault

track_CAGA_005 function

Tracking data
Columns:
x = longitude in decimal degrees
y = latitude in decimal degrees
t = time in POSIXct
b = behaviour observed on video data (3:flying, 2:sitting on water,
1:diving ,-1:no data)
id = individual id

Format

Data collected from a cape gannet track (Morus capensis, Lichtenstein 1823),
breeding on Bird Island (Algo Bay, South Africa) in december 2010. — track_CAGA_005

Data collected from a cape gannet track (Morus capensis, Lichtenstein 1823),
breeding on Bird Island (Algo Bay, South Africa) in december 2010.

track_CAGA_005: Data collected from a cape gannet track (Morus capensis, Lichtenstein 1823), breeding on Bird Island (Algo Bay, South Africa) in december 2010.

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