Dataset of Bottlenose Dolphin Acoustic Recordings from Boat-Based Encounters Using HydroMoth Devices, Event 006 (2024-12-01)

Evento de muestreo
Última versión publicado por Institut de Ciències del Mar (CSIC) el mar. 2, 2026 Institut de Ciències del Mar (CSIC)

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Descripción

This dataset contains acoustic information derived from underwater recordings of a group of bottlenose dolphins (Tursiops truncatus) during a boat-based encounter on 1 December 2024 off Costes del Garraf (Natura 2000: ES5110020; Catalonia, Spain, NW Mediterranean). Recordings were made using a HydroMoth device (AudioMoth Firmware Basic v1.11.0) by the Institut de Ciències del Mar (ICM-CSIC), with field support from Associació Cetàcea. The workflow relies entirely on open-source tools and is designed to ensure FAIR data publication in biodiversity repositories: media files and supplementary materials are preserved in Zenodo, while structured data are published as a Darwin Core Archive (DwC-A) through GBIF.

Registros

Los datos en este recurso de evento de muestreo han sido publicados como Archivo Darwin Core(DwC-A), el cual es un formato estándar para compartir datos de biodiversidad como un conjunto de una o más tablas de datos. La tabla de datos del core contiene 1 registros.

también existen 3 tablas de datos de extensiones. Un registro en una extensión provee información adicional sobre un registro en el core. El número de registros en cada tabla de datos de la extensión se ilustra a continuación.

Event (core)
1
ExtendedMeasurementOrFact 
37
Multimedia 
3
Occurrence 
1

Este IPT archiva los datos y, por lo tanto, sirve como repositorio de datos. Los datos y los metadatos del recurso están disponibles para su descarga en la sección descargas. La tabla versiones enumera otras versiones del recurso que se han puesto a disposición del público y permite seguir los cambios realizados en el recurso a lo largo del tiempo.

Versiones

La siguiente tabla muestra sólo las versiones publicadas del recurso que son de acceso público.

¿Cómo referenciar?

Los usuarios deben citar este trabajo de la siguiente manera:

Chaparro Elias, L., Rodero, C., Marco, N., Giralt Paradell, O., EMBIMOS research group (ICM-CSIC), & Associació Cetàcea. (2025). Dataset of Bottlenose Dolphin Acoustic Recordings from Boat-Based Encounters Using HydroMoth Devices, Event 006 (2024-12-01) (v3.0.0) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.17534727

Derechos

Los usuarios deben respetar los siguientes derechos de uso:

El publicador y propietario de los derechos de este trabajo es Institut de Ciències del Mar (CSIC). Esta obra está bajo una licencia Creative Commons de Atribución/Reconocimiento-NoComercial (CC-BY-NC 4.0).

Registro GBIF

Este recurso ha sido registrado en GBIF con el siguiente UUID: 203112b0-8279-48c1-8bad-7e119bf64171.  Institut de Ciències del Mar (CSIC) publica este recurso y está registrado en GBIF como un publicador de datos avalado por GBIF Spain.

Palabras clave

Bioacoustics; Underwater recordings; Cetacean vocalisations; Tursiops truncatus; HydroMoth; Passive acoustic monitoring; PAMGuard; ROCCA; Citizen science; Open source; Data flow; Costes del Garraf; Samplingevent

Contactos

Lydia Chaparro Elias
  • Proveedor De Los Metadatos
  • Custodian steward
Institut de Ciències del Mar (CSIC)
08003 Barcelona
Barcelona
ES
Carlos Rodero
  • Originador
  • Data collector
Institut de Ciències del Mar (CSIC)
08003 Barcelona
Barcelona
ES
Núria Marco
  • Originador
  • Data collector
Associació Cetàcea
Barcelona
Oriol Giralt Paradell
  • Originador
  • Data collector
Associació Cetàcea
Barcelona
Lydia Chaparro Elias
  • Proveedor De Los Metadatos
Institut de Ciències del Mar (CSIC)
08003 Barcelona
Barcelona
ES
EMBIMOS research group
  • Administrative point of contact
  • Institut de Ciències del Mar (ICM-CSIC)
  • Passeig Marítim de la Barceloneta 37-49
08003 Barcelona
Barcelona
ES
  • +34 932309500
Associació Cetàcea
  • Field partner
  • Ateneu L'Harmonia, Carrer de Sant Adrià, 20, Sant Andreu
08030 Barcelona
Barcelona

Cobertura geográfica

Costes del Garraf, Catalonia, Spain (NW Mediterranean). Natura 2000: ES5110020. Representative coordinates: 41°08′13.18″N, 1°45′03.22″E.

Coordenadas límite Latitud Mínima Longitud Mínima [41,13, 1,75], Latitud Máxima Longitud Máxima [41,137, 1,751]

Cobertura taxonómica

scientificName: Tursiops truncatus taxonRank: species kingdom: Animalia phylum: Chordata class: Mammalia order: Cetacea family: Delphinidae genus: Tursiops species: Tursiops truncatus

Reino Animalia
Filo Chordata
Class Mammalia
Orden Cetacea
Familia Delphinidae

Cobertura temporal

Fecha Inicial 2024-12-01

Datos del proyecto

Participatory bioacoustics pilot linking Zenodo (media) and GBIF DwC-A (tables) to support FAIR data sharing for odontocete acoustics.

Título Bottlenose Dolphin Acoustic Recordings from Boat-Based Encounters Using HydroMoth Devices
Identificador https://doi.org/10.5281/zenodo.17534727
Fuentes de Financiación DTO-BioFlow – Integration of biodiversity monitoring data into the Digital Twin Ocean (Grant Agreement ID: 101112823).
Descripción del área de estudio Costes del Garraf (Natura 2000 site ES5110020; Catalonia, Spain, north-western Mediterranean Sea).
Descripción del diseño Sampling event with vessel engine off and recorder deployed during the encounter; DwC-A with Event, Occurrence, eMoF, and SimpleMultimedia.

Personas asociadas al proyecto:

Métodos de muestreo

The HydroMoth (Open Acoustic Devices) was configured for broadband recording at 250 kHz (Medium gain) with a 0.5–125 kHz band-pass filter and duty-cycled recording (300 s record / 5 s sleep). Data and metadata were structured for publication as a Darwin Core Archive (DwC-A). Because the device was not acoustically calibrated, amplitudes are expressed as relative dB FS (peak-to-peak) rather than absolute levels (dB re 1 µPa).

Área de Estudio The encounter occurred off the Catalan coast within the Natura 2000 marine site Costes del Garraf (ES5110020). After the dolphin group was sighted, the vessel’s engine was switched off and the recorder was gently deployed at 5–7 m depth, where it remained until the encounter ended. The eight-minute segment analysed spans 09:36:25–09:44:30 (UTC+1) on 1 December 2024. Field notes—subsequently mapped to Darwin Core Event and Occurrence—include timings, species confirmation, number of individuals, recorder identity and depth, coordinates, sea state and brief behavioural context.
Control de Calidad An initial quality-control check (QC-0) verified file integrity, temporal consistency and agreement with the expected configuration (sampling rate, duration, etc). Whistles were manually reviewed and validated within the ROCCA module (PAMGuard) to exclude doubtful or very low-SNR contours. Clipped intervals were annotated in Audacity 3.7.5 and excluded before computing click metrics and classes with the PAMGuard Click Detector. The eMoF table specifies units, methods and remarks to ensure transparent and reproducible calculations and filtering rules.

Descripción de la metodología paso a paso:

  1. Analysis: The audio files were screened in Audacity 3.7.5 to identify potential signal saturation (clipping). Two label types were created: HardClip (0 dBFS) and NearClip (−0.5 dBFS). Downstream analyses masked ±5 ms around these intervals. The audio was processed with PAMGuard v2.02.16 using two main modules: the Click Detector to detect clicks and ROCCA to visualise and select whistles. To obtain the actual (“real”) number of clicks, PAMGuard detections were cross-checked against the Audacity clipping labels. Real clicks were defined as those with a representative inter-click interval (ICI) of 0.5–100 ms and occurring outside the ±5 ms windows around NearClip/HardClip labels. Further methodological details are provided in the Zenodo record (DOI: 10.5281/zenodo.17534727).
  2. Data structure and access: The dataset is distributed as a Darwin Core Archive (DwC-A) containing Event, Occurrence, ExtendedMeasurementOrFact (eMoF) and SimpleMultimedia, along with meta.xml and the EML. SimpleMultimedia entries resolve to Zenodo, where all raw audio (WAV), PAMGuard project, configuration files and figures are preserved to support FAIR discovery and reuse. Linkage to the core follows the standard DwC convention in which each extension uses coreID = eventID (Zenodo DOI: 10.5281/zenodo.17534727).
  3. Key numerical results from the eight-minute segment analysed: Whistles: A total of 92 whistles were validated, with minimum–maximum frequencies between 7.6–13.0 kHz. These included convex, ascending and quasi-constant contours with harmonics. Clicks: PAMGuard automatically detected 21,853 clicks, of which 20,217 met the criteria for real clicks. Their mean relative amplitude was 134.99 dB FS (p-p) (relative, non-calibrated units). Based on representative ICIs, real clicks were classified as: Burst pulses (ICI ≤ 3 ms): 70%; Click trains (3 < ICI ≤ 10 ms): 13%; and Echolocation clicks (10 < ICI ≤ 100 ms): 17%. All metrics are included in the eMoF table.

Referencias bibliográficas

  1. Audacity (Version 3.7.5). Audacity Team. Free, open‑source, cross‑platform audio software.
  2. AudioMoth Firmware Basic v1.11.0 (Open Acoustic Devices).
  3. JASP (Version 0.95.4). JASP Team. Free and open statistics package.
  4. PAMGuard (Version 2.02.16). Open-source platform for passive acoustic monitoring (Gillespie et al., 2008).
  5. Raven Lite (Version 2.0.5). K. Lisa Yang Center for Conservation Bioacoustics at the Cornell Lab of Ornithology. Interactive sound analysis software for bioacoustics.

Metadatos adicionales

Agradecimientos
Propósito
Identificadores alternativos 10.15470/77bhey
203112b0-8279-48c1-8bad-7e119bf64171
https://ipt.gbif.es/resource?r=icm-bioacoustics