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

Jiangang Luo, Jerald S. Ault, Michael F. Larkin, Luiz R. Barbieri

Research output: Contribution to journalArticle

13 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)101-109
Number of pages9
JournalMarine Ecology Progress Series
Volume357
DOIs
StatePublished - Apr 7 2008

Keywords

  • Atlantic tarpon
  • Geolocation
  • PAT tags
  • Salinity
  • Wet/dry sensor

ASJC Scopus subject areas

  • Aquatic Science
  • Ecology

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