An expeditious low-cost method for the acoustic characterization of seabeds in a Mediterranean coastal protected area

Autores
Sanchez Carnero, Noela Belen; Rodríguez Pérez, Daniel; Llorens, S.; Orenes Salazar, V.; Ortolano, A.; García Charton, J. A.
Año de publicación
2023
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Posidonia oceanica meadows are ecosystem engineers which, despite their ecological relevance, are experiencing habitat fragmentation and area decrease. Cartography and information on the ecological status of these habitats is key to an effective maritime spatial planning and management for habitat conservation. In this work we apply an acoustic methodology to map benthic habitats (substrate and vegetation) in an archipelago of the Natura 2000 Network close to the coast of Murcia (SE Spain) where dense and sparse areas of P. oceanica, and patches of Cymodocea nodosa appear over a sandy and had bottom. The methodology uses dual frequency information (200 kHz and 38 kHz) acquired with a single-beam echosounder to develop a bathymetry, and performs sea bottom and vegetation supervised classifications, using video and scuba diver observations as groundtruthing data. Sea bottom was classified from acoustic features of the first and second 200 kHz echoes into 5 substrate classes using a random forest classifier: sand, fine sand, coarse sand, hard bottoms and hard bottoms with sandy patches. The vegetation was classified from features extracted from the “above-bottom” part of the echo (height and backscattering intensity) in both frequencies, resulting also in a 5 class classification: C. nodosa meadows, dense P. oceanica meadows, dispersed P. oceanica meadows, dense P. oceanica with sand patches, and no-vegetation; according to the random-forest Gini index, 38 kHz features were the most informational variables for this classification. The validation accuracies of both classifications were 85% (substrates) and 70% (vegetation), close to accuracies reported in the literature when using a similar number of classes. The results of this article (including bathymetric, and substrate and vegetation thematic maps), together with the acoustic methodology described and used, are contributions that can improve the continuous monitoring of Mediterranean seagrasses.
Fil: Sanchez Carnero, Noela Belen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina
Fil: Rodríguez Pérez, Daniel. Universidad Nacional de Educación a Distancia; España
Fil: Llorens, S.. Universidad Politécnica de Valencia; España
Fil: Orenes Salazar, V.. Universidad de Murcia; España
Fil: Ortolano, A.. Universidad de Murcia; España
Fil: García Charton, J. A.. Universidad de Murcia; España
Materia
ACOUSTIC CLASSIFICATION
MEDITERRANEAN SEA
POSIDONIA OCEANICA
RANDOM FOREST
SEABED MAPPING
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/233510

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network_name_str CONICET Digital (CONICET)
spelling An expeditious low-cost method for the acoustic characterization of seabeds in a Mediterranean coastal protected areaSanchez Carnero, Noela BelenRodríguez Pérez, DanielLlorens, S.Orenes Salazar, V.Ortolano, A.García Charton, J. A.ACOUSTIC CLASSIFICATIONMEDITERRANEAN SEAPOSIDONIA OCEANICARANDOM FORESTSEABED MAPPINGhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Posidonia oceanica meadows are ecosystem engineers which, despite their ecological relevance, are experiencing habitat fragmentation and area decrease. Cartography and information on the ecological status of these habitats is key to an effective maritime spatial planning and management for habitat conservation. In this work we apply an acoustic methodology to map benthic habitats (substrate and vegetation) in an archipelago of the Natura 2000 Network close to the coast of Murcia (SE Spain) where dense and sparse areas of P. oceanica, and patches of Cymodocea nodosa appear over a sandy and had bottom. The methodology uses dual frequency information (200 kHz and 38 kHz) acquired with a single-beam echosounder to develop a bathymetry, and performs sea bottom and vegetation supervised classifications, using video and scuba diver observations as groundtruthing data. Sea bottom was classified from acoustic features of the first and second 200 kHz echoes into 5 substrate classes using a random forest classifier: sand, fine sand, coarse sand, hard bottoms and hard bottoms with sandy patches. The vegetation was classified from features extracted from the “above-bottom” part of the echo (height and backscattering intensity) in both frequencies, resulting also in a 5 class classification: C. nodosa meadows, dense P. oceanica meadows, dispersed P. oceanica meadows, dense P. oceanica with sand patches, and no-vegetation; according to the random-forest Gini index, 38 kHz features were the most informational variables for this classification. The validation accuracies of both classifications were 85% (substrates) and 70% (vegetation), close to accuracies reported in the literature when using a similar number of classes. The results of this article (including bathymetric, and substrate and vegetation thematic maps), together with the acoustic methodology described and used, are contributions that can improve the continuous monitoring of Mediterranean seagrasses.Fil: Sanchez Carnero, Noela Belen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; ArgentinaFil: Rodríguez Pérez, Daniel. Universidad Nacional de Educación a Distancia; EspañaFil: Llorens, S.. Universidad Politécnica de Valencia; EspañaFil: Orenes Salazar, V.. Universidad de Murcia; EspañaFil: Ortolano, A.. Universidad de Murcia; EspañaFil: García Charton, J. A.. Universidad de Murcia; EspañaAcademic Press Ltd - Elsevier Science Ltd2023-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/233510Sanchez Carnero, Noela Belen; Rodríguez Pérez, Daniel; Llorens, S.; Orenes Salazar, V.; Ortolano, A.; et al.; An expeditious low-cost method for the acoustic characterization of seabeds in a Mediterranean coastal protected area; Academic Press Ltd - Elsevier Science Ltd; Estuarine, Coastal and Shelf Science; 281; 2-2023; 1-120272-7714CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.ecss.2022.108204info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:03:48Zoai:ri.conicet.gov.ar:11336/233510instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:03:48.419CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv An expeditious low-cost method for the acoustic characterization of seabeds in a Mediterranean coastal protected area
title An expeditious low-cost method for the acoustic characterization of seabeds in a Mediterranean coastal protected area
spellingShingle An expeditious low-cost method for the acoustic characterization of seabeds in a Mediterranean coastal protected area
Sanchez Carnero, Noela Belen
ACOUSTIC CLASSIFICATION
MEDITERRANEAN SEA
POSIDONIA OCEANICA
RANDOM FOREST
SEABED MAPPING
title_short An expeditious low-cost method for the acoustic characterization of seabeds in a Mediterranean coastal protected area
title_full An expeditious low-cost method for the acoustic characterization of seabeds in a Mediterranean coastal protected area
title_fullStr An expeditious low-cost method for the acoustic characterization of seabeds in a Mediterranean coastal protected area
title_full_unstemmed An expeditious low-cost method for the acoustic characterization of seabeds in a Mediterranean coastal protected area
title_sort An expeditious low-cost method for the acoustic characterization of seabeds in a Mediterranean coastal protected area
dc.creator.none.fl_str_mv Sanchez Carnero, Noela Belen
Rodríguez Pérez, Daniel
Llorens, S.
Orenes Salazar, V.
Ortolano, A.
García Charton, J. A.
author Sanchez Carnero, Noela Belen
author_facet Sanchez Carnero, Noela Belen
Rodríguez Pérez, Daniel
Llorens, S.
Orenes Salazar, V.
Ortolano, A.
García Charton, J. A.
author_role author
author2 Rodríguez Pérez, Daniel
Llorens, S.
Orenes Salazar, V.
Ortolano, A.
García Charton, J. A.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv ACOUSTIC CLASSIFICATION
MEDITERRANEAN SEA
POSIDONIA OCEANICA
RANDOM FOREST
SEABED MAPPING
topic ACOUSTIC CLASSIFICATION
MEDITERRANEAN SEA
POSIDONIA OCEANICA
RANDOM FOREST
SEABED MAPPING
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Posidonia oceanica meadows are ecosystem engineers which, despite their ecological relevance, are experiencing habitat fragmentation and area decrease. Cartography and information on the ecological status of these habitats is key to an effective maritime spatial planning and management for habitat conservation. In this work we apply an acoustic methodology to map benthic habitats (substrate and vegetation) in an archipelago of the Natura 2000 Network close to the coast of Murcia (SE Spain) where dense and sparse areas of P. oceanica, and patches of Cymodocea nodosa appear over a sandy and had bottom. The methodology uses dual frequency information (200 kHz and 38 kHz) acquired with a single-beam echosounder to develop a bathymetry, and performs sea bottom and vegetation supervised classifications, using video and scuba diver observations as groundtruthing data. Sea bottom was classified from acoustic features of the first and second 200 kHz echoes into 5 substrate classes using a random forest classifier: sand, fine sand, coarse sand, hard bottoms and hard bottoms with sandy patches. The vegetation was classified from features extracted from the “above-bottom” part of the echo (height and backscattering intensity) in both frequencies, resulting also in a 5 class classification: C. nodosa meadows, dense P. oceanica meadows, dispersed P. oceanica meadows, dense P. oceanica with sand patches, and no-vegetation; according to the random-forest Gini index, 38 kHz features were the most informational variables for this classification. The validation accuracies of both classifications were 85% (substrates) and 70% (vegetation), close to accuracies reported in the literature when using a similar number of classes. The results of this article (including bathymetric, and substrate and vegetation thematic maps), together with the acoustic methodology described and used, are contributions that can improve the continuous monitoring of Mediterranean seagrasses.
Fil: Sanchez Carnero, Noela Belen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina
Fil: Rodríguez Pérez, Daniel. Universidad Nacional de Educación a Distancia; España
Fil: Llorens, S.. Universidad Politécnica de Valencia; España
Fil: Orenes Salazar, V.. Universidad de Murcia; España
Fil: Ortolano, A.. Universidad de Murcia; España
Fil: García Charton, J. A.. Universidad de Murcia; España
description Posidonia oceanica meadows are ecosystem engineers which, despite their ecological relevance, are experiencing habitat fragmentation and area decrease. Cartography and information on the ecological status of these habitats is key to an effective maritime spatial planning and management for habitat conservation. In this work we apply an acoustic methodology to map benthic habitats (substrate and vegetation) in an archipelago of the Natura 2000 Network close to the coast of Murcia (SE Spain) where dense and sparse areas of P. oceanica, and patches of Cymodocea nodosa appear over a sandy and had bottom. The methodology uses dual frequency information (200 kHz and 38 kHz) acquired with a single-beam echosounder to develop a bathymetry, and performs sea bottom and vegetation supervised classifications, using video and scuba diver observations as groundtruthing data. Sea bottom was classified from acoustic features of the first and second 200 kHz echoes into 5 substrate classes using a random forest classifier: sand, fine sand, coarse sand, hard bottoms and hard bottoms with sandy patches. The vegetation was classified from features extracted from the “above-bottom” part of the echo (height and backscattering intensity) in both frequencies, resulting also in a 5 class classification: C. nodosa meadows, dense P. oceanica meadows, dispersed P. oceanica meadows, dense P. oceanica with sand patches, and no-vegetation; according to the random-forest Gini index, 38 kHz features were the most informational variables for this classification. The validation accuracies of both classifications were 85% (substrates) and 70% (vegetation), close to accuracies reported in the literature when using a similar number of classes. The results of this article (including bathymetric, and substrate and vegetation thematic maps), together with the acoustic methodology described and used, are contributions that can improve the continuous monitoring of Mediterranean seagrasses.
publishDate 2023
dc.date.none.fl_str_mv 2023-02
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/233510
Sanchez Carnero, Noela Belen; Rodríguez Pérez, Daniel; Llorens, S.; Orenes Salazar, V.; Ortolano, A.; et al.; An expeditious low-cost method for the acoustic characterization of seabeds in a Mediterranean coastal protected area; Academic Press Ltd - Elsevier Science Ltd; Estuarine, Coastal and Shelf Science; 281; 2-2023; 1-12
0272-7714
CONICET Digital
CONICET
url http://hdl.handle.net/11336/233510
identifier_str_mv Sanchez Carnero, Noela Belen; Rodríguez Pérez, Daniel; Llorens, S.; Orenes Salazar, V.; Ortolano, A.; et al.; An expeditious low-cost method for the acoustic characterization of seabeds in a Mediterranean coastal protected area; Academic Press Ltd - Elsevier Science Ltd; Estuarine, Coastal and Shelf Science; 281; 2-2023; 1-12
0272-7714
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ecss.2022.108204
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Academic Press Ltd - Elsevier Science Ltd
publisher.none.fl_str_mv Academic Press Ltd - Elsevier Science Ltd
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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