6533b823fe1ef96bd127ec28
RESEARCH PRODUCT
Detection and mapping of Posidonia oceanica dead matte by high-resolution acoustic imaging
Maria PirrottaAntonino ScannavinoGermana Di MaidaFilippo LuzzuCarla OrestanoSebastiano CalvoAgostino Tomasellosubject
Settore BIO/07 - EcologiaAtmospheric SciencebiologyApplied MathematicsMineralogyHigh resolutionbiology.organism_classificationGeographyEcho soundingPosidonia oceanica dead matte sub-bottom profiler remote sensing carbon sinkPosidonia oceanicaComputers in Earth SciencesSeabedOptoacoustic imagingGeneral Environmental Sciencedescription
A high-resolution echosounder was used to acquire seismo-acoustic records of P. oceanica dead matte patches in the Gulf of Palermo. Seismo-acoustic profiling enabled detection of dead matte structures that are invisible to visual inspection, being hidden by variable layers of sandy sediment. The thickness of the dead matte measured reaches a maximum of 2.2 m. The mean volume of the matte per unit area of seabed surface (MEIx) varies from 0.2 to 2.2 m 3 /m 2 , with an average value of 1.6 m 3 /m 2 and a total volume estimated at 73,000 m 3 . From literature data and from the volume of dead matte calculated in the present work we estimated that total carbon accumulated in the matte is about 2,484 tons. Seismo-acoustic technologies proves to be a powerful, non-destructive method to measure the thickness, extension, volume of dead matte and its potential carbon content.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-06-30 | Italian Journal of Remote Sensing |