MEPS 357:101-109 (2008)  -  DOI: https://doi.org/10.3354/meps07288

Salinity measurements from pop-up archival transmitting (PAT) tags and their application to geolocation estimation for Atlantic tarpon

Jiangang Luo1,*, Jerald S. Ault1, Michael F. Larkin1, Luiz R. Barbieri2

1University of Miami Rosenstiel School of Marine and Atmospheric Sciences (RSMAS), Division of Marine Biology and Fisheries, 4600 Rickenbacker Causeway, Miami, Florida 33149, USA
2Florida Fish & Wildlife Conservation Commission, Florida Fish & Wildlife Research Institute, 100 8th Avenue SE, St. Petersburg, Florida 33701, USA

ABSTRACT: A new wet/dry sensor was developed by the satellite-based pop-up archival transmitting (PAT) tag manufacturer to determine the wet and dry status of a tag, designed to indicate whether or not to initiate uplink transmissions to overhead satellites to extend tag battery life. We discovered that the wet/dry sensor can also be used to measure the salinity of coastal waters after we recovered a PAT tag showing oscillating readings of wet/dry sensor values that mimicked tidal cycles. We conducted a calibration experiment on 6 PAT tags to evaluate the stability, resolution, and accuracy of the sensor to obtain salinity measurements. Our results indicated that the wet/dry sensor was stable, and the resolution and accuracy of the sensor were good at low salinities (<20 psu), but relatively poor at high salinities. We then provide an example showing how the salinity information can be used to improve geolocation estimation for a large coastal marine fish, the Atlantic tarpon Megalops atlanticus.


KEY WORDS: Salinity · PAT tags · Wet/dry sensor · Geolocation · Atlantic tarpon


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Cite this article as: Luo J, Ault JS, Larkin MF, Barbieri LR (2008) Salinity measurements from pop-up archival transmitting (PAT) tags and their application to geolocation estimation for Atlantic tarpon. Mar Ecol Prog Ser 357:101-109. https://doi.org/10.3354/meps07288

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