Publications and reports

Broadband acoustic classification of Atlantic cod, polar cod, and northern shrimp in in situ mesocosm experiments

Published in Fisheries Research, 2025

This paper presents machine learning classification of target strength spectra shape collected from mesocosm experiments for northern shrimp, Atlantic cod and polar cod.

Recommended citation: Muriel Dunn, Geir Pedersen, Malin Daase, Jørgen Berge, Emily Venables, Sünnje L. Basedow, Stig Falk-Petersen, Tom J. Langbehn, Jenny Jensen, Lionel Camus, Maxime Geoffroy, Broadband acoustic classification of Atlantic cod, polar cod, and northern shrimp in in situ mesocosm experiments, Fisheries Research, 286, 2025, 107388, https://doi.org/10.1016/j.fishres.2025.107388. https://doi.org/10.1016/j.fishres.2025.107388

Extreme mismatch between phytoplankton and grazers during Arctic spring blooms and consequences for the pelagic food-web

Published in Progress in Oceanography, 2024

we surveyed the pelagic ecosystem of the Barents Sea Polar Front in May of two consecutive years (2021 and 2022) to investigate the pelagic food-web from primary producers to planktivorous fish.

Recommended citation: Renaud, P. E., Daase, M., Leu, E., Geoffroy, M., Basedow, S., Inall, M., ... & Gradinger, R. (2024). Extreme mismatch between phytoplankton and grazers during Arctic spring blooms and consequences for the pelagic food-web. Progress in Oceanography, 229, 103365. https://doi.org/10.1016/j.pocean.2024.103365

A Digital Twin of the Trondheim Fjord for Environmental Monitoring—A Pilot Case

Published in Journal of Marine Science and Engineering, 2024

This paper presents the results of a Water Quality DTO pilot located in the Trondheim fjord in Norway. This paper details the building blocks of DTO, specific to this environmental monitoring pilot.

Recommended citation: Vasilijevic, A., Brönner, U., Dunn, M., García-Valle, G., Fabrini, J., Stevenson-Jones, R., ... & Nepstad, R. (2024). A Digital Twin of the Trondheim Fjord for Environmental Monitoring—A Pilot Case. Journal of Marine Science and Engineering, 12(9), 1530. https://doi.org/10.3390/jmse12091530

Inverse method applied to autonomous broadband hydroacoustic survey detects higher densities of zooplankton in near-surface aggregations than vessel-based net survey

Published in Canadian Journal of Fisheries and Aquatic Sciences, 2023

This paper presents the inverse method applied to broadband autonomous acoustic surveys. We conclude the inverse method can improve density estimates of epipelagic organisms by diminishing avoidance biases and increasing the spatio-temporal resolution of ship-based surveys.

Recommended citation: Dunn, M., Pedersen, G., Basedow, S.L., Daase, M., Falk-Petersen, S., Bachelot, L., Camus, L. and Geoffroy, M., 2022. Inverse method applied to autonomous broadband hydroacoustic survey detects higher densities of zooplankton in near-surface aggregations than vessel-based net survey. Canadian Journal of Fisheries and Aquatic Sciences. https://doi.org/10.1139/cjfas-2022-0105 https://cdnsciencepub.com/doi/abs/10.1139/cjfas-2022-0105

Evaluation of discrete target detection with an acoustic Doppler current profiler

Published in Limnology and Oceanography: Methods, 2022

Broadband ADCP for discrete target counting returns comparable results to split-beam echosounder fish counts.

Recommended citation: Dunn, M. and Zedel, L. (2022). "Evaluation of discrete target detection with an acoustic Doppler current profiler". Limnology and Oceanography: Methods. https://aslopubs.onlinelibrary.wiley.com/doi/epdf/10.1002/lom3.10484

Report - Sailbuoy in Antarctica: A survey for the Norwegian Polar Institute.

Published in Akvaplan-niva reports, 2021

We completed a quality control check of the mission data and presented an overview in the report.

Recommended citation: Ramasco, V., Dunn, M. (2021) Sailbuoy in Antarctica: A survey for the Norwegian Polar Institute. Akvaplan-niva Report 2021 62586.01 .

Report - Data from the BREA-MFP and CBS-MEA research programs describing the Anguniaqvia niqiqyuam Marine Protected Area (ANMPA) ecosystem

Published in Canadian data report of fisheries and aquatic sciences, 2020

The conservation objectives of the Anguniaqvia niqiqyuam Marine Protected Area (ANMPA) focus on maintaining the integrity of marine habitats offshore of the Cape Parry Migratory Bird Sanctuary that support populations of key species, such as beluga whales, Arctic Char, and ringed and bearded seals. This report provides ecosystem-level scientific knowledge to support the development of monitoring objectives and activities.

Recommended citation: Niemi, A., Majewski, A., et al. (including Dunn, M.) (2020). Data from the BREA-MFP and CBS-MEA research programs describing the Anguniaqvia niqiqyuam Marine Protected Area (ANMPA) ecosystem. Can. Data Rep. Fish. Aquat. Sci. 1316: ix + 90 p. https://publications.gc.ca/site/eng/9.892324/publication.html

Developments in fish detection using broadband acoustic doppler current profiler

Published in Memorial University of Newfoundland Library, 2019

This thesis presents results from a 600 kHz RD Instruments Workhorse ADCP alongside a 120 kHz BioSonics DTX Submersible Split-Beam Echosounder system and contrasts their capabilities in the context of fish monitoring in high-energy tidal channels.

Recommended citation: Dunn, M., 2019. Developments in fish detection using broadband acoustic doppler current profiler (Masters dissertation, Memorial University of Newfoundland). https://research.library.mun.ca/14340/1/thesis.pdf

Development of acoustic Doppler fish monitoring for applications in high-energy tidal channels

Published in Underwater acoustics conference and exhibition, 2019

Detecting fish in ADCP measurements using coninciding incidences of high phase correlation and high intensity.

Recommended citation: Dunn, M., Zedel, L., Trowse, G. (2019). "Development of acoustic Doppler fish monitoring for applications in high-energy tidal channels". UACE2019-Conference Proceedings. https://www.uaconferences.org/docs/Past_Proceedings/UACE2019_Proceedings.pdf