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The BAARA (Biological AutomAted RAdiotracking) system: a new approach in ecological field studies.

Řeřucha Š, Bartonička T, Jedlička P, Čížek M, Hlouša O, Lučan R, Horáček I - PLoS ONE (2015)

Bottom Line: This new approach to a tracking system was tested for its applicability in a series of field and laboratory tests.BAARA has been tested within fieldwork explorations of Rousettus aegyptiacus during field trips to Dakhla oasis in Egypt.The results illustrate the novel perspective which automated radiotracking opens for the study of spatial behaviour, particularly in addressing topics in the domain of population ecology.

View Article: PubMed Central - PubMed

Affiliation: Institute of Scientific Instruments of the ASCR, v.v.i., Královopolská 147, CZ 612 64 Brno, Czech Republic.

ABSTRACT
Radiotracking is an important and often the only possible method to explore specific habits and the behaviour of animals, but it has proven to be very demanding and time-consuming, especially when frequent positioning of a large group is required. Our aim was to address this issue by making the process partially automated, to mitigate the demands and related costs. This paper presents a novel automated tracking system that consists of a network of automated tracking stations deployed within the target area. Each station reads the signals from telemetry transmitters, estimates the bearing and distance of the tagged animals and records their position. The station is capable of tracking a theoretically unlimited number of transmitters on different frequency channels with the period of 5-15 seconds per single channel. An ordinary transmitter that fits within the supported frequency band might be used with BAARA (Biological AutomAted RAdiotracking); an extra option is the use of a custom-programmable transmitter with configurable operational parameters, such as the precise frequency channel or the transmission parameters. This new approach to a tracking system was tested for its applicability in a series of field and laboratory tests. BAARA has been tested within fieldwork explorations of Rousettus aegyptiacus during field trips to Dakhla oasis in Egypt. The results illustrate the novel perspective which automated radiotracking opens for the study of spatial behaviour, particularly in addressing topics in the domain of population ecology.

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Acceptance threshold identification on the basis of field-acquired data.The threshold reflects the fact that once the signal to noise ratio becomes too low, the pulse identification fails and the rate of errorneously identified positions rises sharply.
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pone.0116785.g005: Acceptance threshold identification on the basis of field-acquired data.The threshold reflects the fact that once the signal to noise ratio becomes too low, the pulse identification fails and the rate of errorneously identified positions rises sharply.

Mentions: As a part of the second experimental measurement, we measured the relationship between the indicated signal-to-noise ratio and azimuth estimation error (Fig. 5). The plot clearly shows a dramatic increase in the azimuth error for values below 3dB, therefore, the value 3.3dB was considered a safe value for the threshold.


The BAARA (Biological AutomAted RAdiotracking) system: a new approach in ecological field studies.

Řeřucha Š, Bartonička T, Jedlička P, Čížek M, Hlouša O, Lučan R, Horáček I - PLoS ONE (2015)

Acceptance threshold identification on the basis of field-acquired data.The threshold reflects the fact that once the signal to noise ratio becomes too low, the pulse identification fails and the rate of errorneously identified positions rises sharply.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4340905&req=5

pone.0116785.g005: Acceptance threshold identification on the basis of field-acquired data.The threshold reflects the fact that once the signal to noise ratio becomes too low, the pulse identification fails and the rate of errorneously identified positions rises sharply.
Mentions: As a part of the second experimental measurement, we measured the relationship between the indicated signal-to-noise ratio and azimuth estimation error (Fig. 5). The plot clearly shows a dramatic increase in the azimuth error for values below 3dB, therefore, the value 3.3dB was considered a safe value for the threshold.

Bottom Line: This new approach to a tracking system was tested for its applicability in a series of field and laboratory tests.BAARA has been tested within fieldwork explorations of Rousettus aegyptiacus during field trips to Dakhla oasis in Egypt.The results illustrate the novel perspective which automated radiotracking opens for the study of spatial behaviour, particularly in addressing topics in the domain of population ecology.

View Article: PubMed Central - PubMed

Affiliation: Institute of Scientific Instruments of the ASCR, v.v.i., Královopolská 147, CZ 612 64 Brno, Czech Republic.

ABSTRACT
Radiotracking is an important and often the only possible method to explore specific habits and the behaviour of animals, but it has proven to be very demanding and time-consuming, especially when frequent positioning of a large group is required. Our aim was to address this issue by making the process partially automated, to mitigate the demands and related costs. This paper presents a novel automated tracking system that consists of a network of automated tracking stations deployed within the target area. Each station reads the signals from telemetry transmitters, estimates the bearing and distance of the tagged animals and records their position. The station is capable of tracking a theoretically unlimited number of transmitters on different frequency channels with the period of 5-15 seconds per single channel. An ordinary transmitter that fits within the supported frequency band might be used with BAARA (Biological AutomAted RAdiotracking); an extra option is the use of a custom-programmable transmitter with configurable operational parameters, such as the precise frequency channel or the transmission parameters. This new approach to a tracking system was tested for its applicability in a series of field and laboratory tests. BAARA has been tested within fieldwork explorations of Rousettus aegyptiacus during field trips to Dakhla oasis in Egypt. The results illustrate the novel perspective which automated radiotracking opens for the study of spatial behaviour, particularly in addressing topics in the domain of population ecology.

Show MeSH
Related in: MedlinePlus