Review
Fisheries
M. Frost, K. Diele
Summary: This study emphasizes the importance of identifying and maintaining spawning grounds for herring in Scotland, particularly on the west coast. The research highlights the lack of knowledge regarding the exact location and environmental status of historic and contemporary spawning grounds, and calls for including these essential habitats in herring management plans.
REVIEWS IN FISH BIOLOGY AND FISHERIES
(2022)
Article
Computer Science, Interdisciplinary Applications
Francky Fouedjio, Celine Scheidt, Liang Yang, Peter Achtziger-Zupancic, Jef Caers
Summary: This paper presents a geostatistical implicit modeling method to assess the uncertainty of 3D geo-domain boundaries. The proposed approach provides a more reliable and realistic uncertainty assessment of 3D geo-domain boundaries than the traditional sequential indicator simulation (SIS) method.
COMPUTERS & GEOSCIENCES
(2021)
Article
Engineering, Environmental
Zhesi Cui, Qiyu Chen, Gang Liu, Xiaogang Ma, Xiang Que
Summary: The paper proposes a new MPS simulation method, CCPSIM algorithm, based on conditional conduction probability to mitigate the uncertainty of MPS realizations. CCPSIM is able to accurately characterize complex spatial structures of heterogeneous phenomena and reduce uncertainty in MPS realizations.
STOCHASTIC ENVIRONMENTAL RESEARCH AND RISK ASSESSMENT
(2021)
Article
Computer Science, Artificial Intelligence
Biyun Ding, Tao Zhang, Chao Wang, Ganjun Liu, Jinhua Liang, Ruimin Hu, Yulin Wu, Difei Guo
Summary: This survey investigates the recent advances in acoustic scene classification (ASC) methods, covering earlier works and recent developments. It summarizes and categorizes the existing techniques in terms of data processing, feature acquisition, and modeling, focusing on machine learning based ASC systems. Limitations of current algorithms and challenges for future practical applications are discussed.
EXPERT SYSTEMS WITH APPLICATIONS
(2024)
Article
Multidisciplinary Sciences
Guillermo Boyra, Iosu Paradinas, Inaki Rico, Udane Martinez, Enrique Nogueira
Summary: This study investigated the impact of along-transect resolution on the backscattered acoustic energy in acoustic surveys, finding that decreasing resolution leads to increased uncertainty and underestimation. Higher heterogeneity and lower spatial autocorrelation exacerbate this effect.
SCIENTIFIC REPORTS
(2023)
Article
Environmental Sciences
Daniel Duane, Olav Rune Godo, Nicholas C. Makris
Summary: The article discusses the use of Ocean Acoustic Waveguide Remote Sensing (OAWRS) to measure the population density of Norwegian herring. The study found significant signal attenuation after sunset in spawning grounds, caused by dense herring shoals forming at that time. Corrections were made for signal attenuation to produce instantaneous wide-area population density maps.
Article
Geosciences, Multidisciplinary
Gang Liu, Hongfeng Fang, Qiyu Chen, Zhesi Cui, Min Zeng
Summary: Three-dimensional modeling of ore deposits is important for the quantitative evaluation of mineral resources. However, the non-stationarity of orebody distribution and uncertainty of data and models make 3D modeling challenging. A new approach called FE-3DRCS is proposed, combining geological exploration data and the MPS method. This approach effectively characterizes and evaluates orebodies in a real application.
NATURAL RESOURCES RESEARCH
(2022)
Article
Environmental Sciences
Shani Rousseau, Stephane Gauthier, Chrys Neville, Stewart Johnson, Marc Trudel
Summary: Acoustic surveys are commonly used to evaluate fish stocks worldwide. This study successfully distinguished juvenile Pacific salmon from Pacific herring aggregations using a random forest approach based on acoustic and morphological characteristics. The model achieved a 98% accuracy in differentiating the two species, with school depth and school mean volume backscattering strength as the most important predictors.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Victoria L. G. Todd, Laura D. Williamson, Jian Jiang, Sophie E. Cox, Ian B. Todd, Maximilian Ruffert
Summary: The study performed noise propagation modeling on six commercial ADD models and a 'fictional' ADD, exploring potential auditory impacts on marine mammals. It predicted that real ADDs could cause Temporary Threshold Shift (TTS) to Very High Frequency (VHF) cetaceans within ranges of 4-31 km.
MARINE POLLUTION BULLETIN
(2021)
Article
Engineering, Environmental
Stephanie Thiesen, Uwe Ehret
Summary: In this study, the HER method is used to estimate soil contamination risk, compared with IK and OK models, the results show that in the analyzed dataset, IK and HER predictions perform the best and exhibit comparable accuracy and precision. Compared to IK, the advantages of HER in uncertainty estimation at a fine resolution are that it does not require modeling of multiple indicator variograms, correcting order-relation violations, or defining interpolation/extrapolation of distributions.
STOCHASTIC ENVIRONMENTAL RESEARCH AND RISK ASSESSMENT
(2022)
Article
Geosciences, Multidisciplinary
Alvaro I. Riquelme, Julian M. Ortiz
Summary: Assessing spatial uncertainty over an arbitrary volume is usually done by generating multiple simulations and averaging the property over each to build its uncertainty distribution. Multi-Gaussian kriging offers a simpler alternative by directly computing conditional probability density functions of random variables. This approach demonstrates accuracy in synthetic data and can be applied to real mining cases to determine uncertainty in scheduled production volumes.
MATHEMATICAL GEOSCIENCES
(2021)
Article
Chemistry, Multidisciplinary
Lamberto Tronchin, Ruoran Yan, Antonella Bevilacqua
Summary: This paper analyzes the acoustic behavior of the Monte Castello di Vibio theatre, highlighting the importance of its geometric and architectural features. The results show that the plan layout and interior decoration of the theatre are the main factors influencing acoustic characteristics. Preserving the acoustic features of this unique heritage building is also a goal of this study.
APPLIED SCIENCES-BASEL
(2023)
Article
Fisheries
Amber Staples, Henry D. Legett, Jessica L. Deichmann, Keira Heggie, Matthew B. Ogburn
Summary: This study examined the timing and environmental drivers of spawning in river herring using passive acoustic monitoring and automatic detection of spawning splashes. The results indicated two peaks in spawning activity: early March and mid-April, corresponding to the known phenologies of Alewife and Blueback Herring. Hourly patterns showed distinct diel cycles, with spawning most concentrated at dawn. The study also suggested a potential relationship between spawning activity and the presence of great blue herons. Overall, passive acoustic monitoring was found to be an efficient and affordable method for studying the spawning ecology of anadromous fish.
NORTH AMERICAN JOURNAL OF FISHERIES MANAGEMENT
(2023)
Article
Astronomy & Astrophysics
Paul J. Morris, Artem Bohdan, Martin S. Weidl, Martin Pohl
Summary: To undergo diffusive shock acceleration, electrons need to be preaccelerated. In oblique shocks, electrons can escape to the shock upstream and form the electron foreshock. Particle-in-cell simulations show that the proportion of reflected electrons depends on the obliquity, and these electrons can generate electrostatic waves upstream via the electron acoustic instability.
ASTROPHYSICAL JOURNAL
(2022)
Article
Fisheries
Alysha D. Cypher, Hank Statscewich, Robert Campbell, Seth L. Danielson, John Eiler, Mary Anne Bishop
Summary: This study assessed the effectiveness of an AUV equipped with an integrated acoustic receiver in detecting Pacific herring in Prince William Sound, AK, USA. The study found that distance was the strongest predictor of detections, and the glider depth had a variable effect on detection efficiency depending on transmitter depth and dive orientation. The glider-mounted acoustic receiver had higher detection efficiency compared to stationary acoustic receivers. The AUV successfully detected the locations of 30 Pacific herring transmitters in a large search area of approximately 630 km2.
ICES JOURNAL OF MARINE SCIENCE
(2023)
Article
Marine & Freshwater Biology
Amedee Roy, Christophe Lebigre, Mickael Drogou, Mathieu Woillez
Summary: This study tested different geostatistical methods to estimate species' abundance in estuaries and quantified robust indices of abundance adapted to these complex ecosystems. The results showed that geostatistical methods had greater predictive capabilities than the traditional stratified random estimator, but also had larger coefficients of variation.
ESTUARINE COASTAL AND SHELF SCIENCE
(2022)
Article
Fisheries
Baptiste Alglave, Etienne Rivot, Marie-Pierre Etienne, Mathieu Woillez, James T. Thorson, Youen Vermard
Summary: Developing Species Distribution Models (SDM) for marine exploited species is a major challenge in fisheries ecology. Classical modelling approaches typically rely on fish research survey data. Spatial monitoring of commercial data can provide an additional extensive data source to inform fish spatial distribution. We propose a spatial hierarchical framework integrating both data sources while accounting for preferential sampling (PS) of commercial data. The framework is successfully applied to three demersal species in the Bay of Biscay.
ICES JOURNAL OF MARINE SCIENCE
(2022)
Article
Multidisciplinary Sciences
J. M. Lawrence, P. G. Fernandes
Summary: This study introduces a methodology for clustering surface-piercing oil and gas platforms in the North Sea to select a representative subset for survey design. The most important distinguishing variable was found to be platform type, followed by geographic trend. This can facilitate the efficient use of limited funding for related studies.
SCIENTIFIC REPORTS
(2022)
Article
Ecology
Ana Couto, Benjamin J. Williamson, Thomas Cornulier, Paul G. Fernandes, Shaun Fraser, James D. Chapman, Ian M. Davies, Beth E. Scott
Summary: This study investigates the ecological interactions influencing predator behavior and distribution in tidal stream environments, specifically focusing on the presence of marine renewable devices and their potential impacts. The research concludes that different categories of seabirds, such as benthic and pelagic foragers, exhibit distinct preferences and responses to prey presence, water velocity, and fish schools. Additionally, the study emphasizes the importance of considering both physical and biological data when assessing the ecological impacts of tidal turbines.
Article
Marine & Freshwater Biology
Emilie Le Luherne, Francoise Daverat, Mathieu Woillez, Christophe Pecheyran, Helene de Pontual
Summary: The structure and connectivity of European seabass populations remain poorly known, and a study found that 64% of individuals exhibited spawning site fidelity. Developmental stages and geographical factors were found to significantly influence ecological factors.
ESTUARINE COASTAL AND SHELF SCIENCE
(2022)
Article
Fisheries
R. E. Danby, E. D. Clarke, R. J. Kynoch, D. G. Reid, P. G. Fernandes
Summary: This article investigates the capture efficiency and abundance estimation of two commercially valuable fish species, anglerfish, in the Northern European region. The study finds that capture losses are dependent on fish length, with higher proportions of fish escaping at night. The results have important implications for future stock assessment and management.
FISHERIES RESEARCH
(2022)
Article
Fisheries
Baptiste Alglave, Youen Vermard, Etienne Rivot, Marie -Pierre Etienne, Mathieu Woillez
Summary: Identifying and protecting essential fish habitats requires accurate understanding of fish spatio-temporal distribution. We developed an integrated framework to infer fish spatial distribution on a monthly time step, combining scientific and commercial data while considering fisher's preferential sampling. The model was applied to infer maps of relative biomass for three species in the Bay of Biscay, showing potential in identifying reproduction areas.
CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES
(2023)
Article
Ecology
Jolien Goossens, Mathieu Woillez, Arnault LeBris, Pieterjan Verhelst, Tom Moens, Els Torreele, Jan Reubens
Summary: Technological advances are crucial for maximizing the information potential of electronic tagging studies. Acoustic tags provide location data when animals are within range, while archival tags offer continuous sensor measurements for trajectory inference. In this study, a newly developed acoustic data storage tag (ADST) was used on 154 fish to investigate the potential of this combination tag. Results showed that ADSTs with both acoustic and archival data provided valuable information on fish movement patterns and improved the accuracy of daily position estimates. These findings highlight the importance of combining acoustic and archival tagging technologies in tracking aquatic species.
METHODS IN ECOLOGY AND EVOLUTION
(2023)
Article
Environmental Studies
Hilaire Drouineau, Fabien Moullec, Didier Gascuel, Francis Laloe, Sterenn Lucas, Nicolas Bez, Patrice Guillotreau, Jerome Guitton, Pierre-Yves Hernvann, Martin Huret, Sigrid Lehuta, Marc Leopold, Stephanie Mahevas, Marianne Robert, Mathieu Woillez, Youen Vermard
Summary: Since the 1980s, the Common Fisheries Policy (CFP) has been criticized for its lack of protection for fishermen and ecosystems. The recent initiative led by French fishery scientists highlights the need for transparency, consultation, and urgency in the Mediterranean Sea. Scientists propose an ecosystem approach to fisheries and emphasize the importance of considering climate change in the reform of CFP.
Article
Fisheries
James Dunning, Teunis Jansen, Alan J. Fenwick, Paul G. Fernandes
Summary: This paper presents a novel in-situ method to estimate Fish Target Strength (TS) based on fish body length. Using a broadband scientific echosounder, this study combines the advantages of ex-situ and in-situ measurements, yielding results similar to previous studies using narrowband systems.
FISHERIES RESEARCH
(2023)
Article
Fisheries
Helene de Pontual, Karine Heerah, Jolien Goossens, Francois Garren, Stephane Martin, Loic Le Ru, Didier Le Roy, Mathieu Woillez
Summary: Large-scale electronic tagging is a powerful tool to study fish movements and migrations. We tagged European seabass in various locations and discovered that they exhibit partial migration behavior, with fidelity to specific feeding and spawning areas. These findings have important implications for fishery management and challenge the currently accepted stock structure. Further exploration is needed at both the European level and by regional managers involved in conservation outcomes.
ICES JOURNAL OF MARINE SCIENCE
(2023)
Article
Biodiversity Conservation
B. Scoulding, S. Gastauer, J. C. Taylor, K. M. Boswell, D. V. Fairclough, G. Jackson, P. Sullivan, K. Shertzer, F. Campanella, N. Bacheler, M. Campbell, R. Domokos, Z. Schobernd, T. S. Switzer, N. Jarvis, B. M. Crisafulli, C. Untiedt, P. G. Fernandes
Summary: An integrated acoustic-optical survey method is proposed to estimate the abundance of fish in complex reef habitats. By using concurrent underwater video, the acoustic backscatter can be partitioned to different species, allowing for the estimation of the abundance of important fishery species and other members of the fish community.
JOURNAL OF APPLIED ECOLOGY
(2023)
Article
Fisheries
Edward C. P. Sibley, Travis S. Elsdon, Michael J. Marnane, Alethea S. Madgett, Euan S. Harvey, Thomas Cornulier, Damon Driessen, Paul G. Fernandes
Summary: Imaging sonars are increasingly used in fish surveys, either in combination with or as substitutes for optical instruments. This study compared the data obtained from sonars at different frequencies with optical camera footage, and found that sonars detected three times more fish than optics. The study also identified limitations of imaging sonars, including difficulties in discriminating fishes from benthic growth and detecting fishes in complex habitats.
FISHERIES RESEARCH
(2023)
Article
Fisheries
E. C. P. Sibley, A. S. Madgett, J. M. Lawrence, T. S. Elsdon, M. J. Marnane, P. G. Fernandes
Summary: This study investigates the ability of imaging sonars (IS) to identify fish species, and proposes an alternative method for describing fish assemblages irrespective of species identity. The results show that IS can identify reef fish with variable success, and suggests a new way to categorize fish detected by IS.
ICES JOURNAL OF MARINE SCIENCE
(2023)
Review
Ecology
Edward C. P. Sibley, Alethea S. Madgett, Travis S. Elsdon, Michael J. Marnane, Euan S. Harvey, Paul G. Fernandes
Summary: Reef fish assemblages in tropical and temperate latitudes are facing increasing threats from human impacts and climate change. Efficient survey methods are necessary for quantifying these communities and guiding management strategies. Imaging sonars (ISs), a high-frequency acoustic device, can produce clear images of fish in turbid and dark water, making it a valuable tool for detecting fish in poor visibility and at night. This review examines previous attempts to quantify abundance, species richness, and fish size using IS and compares these findings with alternative methods. The review also discusses the limitations of IS and suggests using alternative methods to complement the estimates obtained from IS.
MARINE ECOLOGY PROGRESS SERIES
(2023)