Repository logo
 
Publication

Acoustic detection of bubbles in a pond covered by the seagrass Cymodocea nodosa

2017Conference object Restricted
Simple item page
dc.contributor.authorFelisberto, Paulo
dc.contributor.authorSilva, J. P.
dc.contributor.authorSilva, A. J.
dc.contributor.authorJesus, Sergio
dc.contributor.authorOlivé, Irene
dc.contributor.authorSantos, Rui
dc.contributor.authorQuental-Ferreira, H.
dc.contributor.authorPousao-Ferreira, P.
dc.contributor.authorCunha, M. E.
dc.date.accessioned2019-11-20T15:07:54Z
dc.date.available2019-11-20T15:07:54Z
dc.date.issued2017
dc.description.abstractThis paper describes two experiments conducted in a pond covered by the seagrass Cymodocea nodosa at the Aquaculture Research Station of the Portuguese Institute for the Sea and Atmosphere in Olhao, Portugal, aiming at developing acoustic methods to assess oxygen production of seagrasses. The first experiment was carried out in July covering two days, when warm water and high photosynthetic rates give a high probability of oxygen supersaturation in water. The second experiment was carried out in late October, covering a period of 10 days, when seagrass productivity was expected to be lower than in July given the low irradiance and photoperiod. In the July experiment the high attenuation of low frequency pulses and broadband water pump noise (< 20 kHz) in the afternoon is ascribed to bubbles formation during oxygen supersaturation conditions. This hypothesis is coherent with the significant increase of the backscattering level, as measured by an acoustic backscatter system operating at 0.5, 1, 2, 4 MHz. Both, the attenuation of low frequency signals and backscattering level are correlated with oxygen supersaturation in water as measured by an optode. In the October experiment, when only water pump noise was acquired, the acoustic variability that can be related to photosynthetic activity was much weaker, nevertheless the attenuation shows a diurnal pattern correlated with the dissolved oxygen. The results suggest a significant release of oxygen as bubbles during photosynthesis, and therefore the potential contribution of acoustic methods to assess oxygen production of seagrass ecosystems.
dc.description.sponsorshipFoundation for Science and Technology (FCT) [PTDC/EEIPRO/2598/2014]
dc.identifier.isbn978-1-5090-5278-3
dc.identifier.issn0197-7385
dc.identifier.urihttp://hdl.handle.net/10400.1/13274
dc.language.isoeng
dc.peerreviewedyes
dc.publisherIEEE
dc.relation.ispartofseriesOceans-IEEE
dc.subjectSize
dc.titleAcoustic detection of bubbles in a pond covered by the seagrass Cymodocea nodosa
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlaceAberdeen, England
oaire.citation.titleOceans 2017 - Aberdeen
oaire.citation.titleOceans Aberdeen Conference
person.familyNameFelisberto
person.familyNameJesus
person.familyNameOlivé
person.familyNameSantos
person.givenNamePaulo
person.givenNameSergio
person.givenNameIrene
person.givenNameRui
person.identifier79549
person.identifier42560
person.identifier.ciencia-idD411-CBA8-85B8
person.identifier.ciencia-id9B18-444D-2244
person.identifier.orcid0000-0001-7542-4332
person.identifier.orcid0000-0002-6021-1761
person.identifier.orcid0000-0002-4865-923X
person.identifier.orcid0000-0002-7861-4366
person.identifier.ridM-9474-2013
person.identifier.ridJ-3922-2013
person.identifier.ridB-4168-2008
person.identifier.scopus-author-id6508039890
person.identifier.scopus-author-id7003729485
person.identifier.scopus-author-id16242114500
person.identifier.scopus-author-id7201375018
rcaap.rightsrestrictedAccess
rcaap.typeconferenceObject
relation.isAuthorOfPublication6574c278-a803-4dbe-9140-4cd8272027db
relation.isAuthorOfPublicatione0226ece-3767-4beb-ab80-868e8897c14a
relation.isAuthorOfPublicationf4552640-d88e-4323-b28a-822c85f533ff
relation.isAuthorOfPublication84487ca8-404a-4584-81f0-3662c340d712
relation.isAuthorOfPublication.latestForDiscovery84487ca8-404a-4584-81f0-3662c340d712

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
13274.pdf
Size:
12.77 MB
Format:
Adobe Portable Document Format
Download

Collections

CCM2-Artigos (em revistas ou actas indexadas)