Recent trends in movement ecology of animals and human mobility.

Radio telemetry (sky blue), showed a decreasing trend, and started in 2009 with the same proportion of studies as GPS, and ended in 2018 in third place, below accelerometer (green).

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While mammals and fish were consistently the most studied groups in each year, the percentage of studies associated to humans showed an increasing trend, even matching the number of studies of birds in 2015 and 2016 (Fig. 3 ).

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