Acoustic monitoring of O2 production of a seagrass meadow
- Felisberto, P.
- Jesus, S. M.
- Zabel, F.
- Santos, Rui
- Silva, João
- Gobert, S.
- Beer, S.
- Bjork, M.
- Mazzuca, S.
- Procaccini, G.
- Runcie, J. W.
- Champenois, W.
- Borges, A. V.
DOIAbstract
Acoustic data were acquired in October 2011 over a Posidonia oceanica meadow in the Bay of la Revellata, Calvi, Corsica. The purpose was to develop an acoustic system for monitoring the oxygen (O2) production of an entire seagrass meadow. In a shallow water area (<38m), densely covered by P. oceanica, a sound source transmitted signals in 3 different bands (400-800Hz, 1.5-3.5kHz and 6.5-8.5kHz) toward three self-recording hydrophones at a distance of 100m, over the period of one week. The data show a high correlation between the diel cycle of the acoustic signals' energy received by the hydrophones and the temporal changes in water column O2 concentration as measured by optodes. The results thus show that a simple acoustic acquisition syste...
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