Article
Multidisciplinary Sciences
Elsa Cuende, Manu Sistiaga, Bent Herrmann, Luis Arregi
Summary: This study examines the size selectivity and catch patterns of different gear combinations in the Basque bottom trawl fishery. The results demonstrate the significant impact of design changes in square mesh panels and codends on the size selectivity and catch patterns of hake and blue whiting. The study suggests prioritizing research on codend size selectivity and the addition of selection devices once good selective properties are achieved.
Article
Chemistry, Multidisciplinary
Le Nhan Pham, Tiffany R. Walsh
Summary: A new force field, MoSu-CHARMM, has been developed to describe the bio-interfacial structures at the aqueous MoS2 interface based on quantum chemical data. This force field accurately represents the non-covalent interactions between the MoS2 surface and various chemistries. Its performance has been validated against experimental data, making it a valuable tool for large-scale simulations of biological interactions with MoS2 surfaces.
Article
Oceanography
Bingzhong Yang, Bent Herrmann, Lei Yan, Jie Li, Teng Wang
Summary: The study showed that catch efficiency decreased as mesh sizes in codends increased. The legal codend D25 was found to be inadequate in protecting juvenile conger pike, with a high percentage of fish below the Market Reference Size being retained. On the other hand, the legal codend D40 significantly mitigated the issue of capturing juvenile fish, but also resulted in considerable loss of commercial-sized fish.
OCEAN & COASTAL MANAGEMENT
(2021)
Article
Multidisciplinary Sciences
Andrea Petetta, Bent Herrmann, Daniel Li Veli, Massimo Virgili, Rocco De Marco, Alessandro Lucchetti
Summary: This study considers the multispecies nature of Mediterranean bottom trawl fisheries and evaluates and compares the catch performance of two different codends. The results show significant differences in catch profiles between the two codends, especially for two commercial flatfish species. The findings can be valuable for the management of Mediterranean bottom trawl fisheries.
Article
Multidisciplinary Sciences
Bingzhong Yang, Bent Herrmann, Lei Yan, Jie Li, Teng Wang
Summary: This study compared the size selectivity and exploitation pattern of six diamond-mesh codends with different mesh sizes for Southern velvet shrimp in the South China Sea. Results showed that a 25mm codend was not suitable for protecting juvenile shrimp, while a 35mm codend struck a good balance between releasing undersized shrimp and retaining legal individuals.
Article
Ecology
Bingzhong Yang, Bent Herrmann, Lei Yan, Jie Li, Teng Wang
Summary: The study found that with the increase of mesh sizes, the selective parameters of codends would increase, but the confidence intervals in these parameters became wider when the mesh sizes reached 40 mm; meanwhile, the catch efficiency of codends decreased with the increase of mesh sizes. For banded scad, the codend with a 30 mm mesh size is the best choice.
REGIONAL STUDIES IN MARINE SCIENCE
(2021)
Article
Marine & Freshwater Biology
Ibrahim Tamer Emecan, Taner Yildiz, Ugur Uzer, Ahmet Catal, Hamdi Moussa, Celalettin Aydin, F. Saadet Karakulak
Summary: An improvement in technological adoption to optimize the environmental benefits of fisheries is needed across the Mediterranean and the Black Sea. Testing of quality standards in trawl fishing is an essential component.
AQUATIC SCIENCES AND ENGINEERING
(2023)
Article
Radiology, Nuclear Medicine & Medical Imaging
Sunay Rodriguez Perez, Johan Coolena, Nicholas W. Marshall, Lesley Cockmartin, Charlotte Biebau, Jeroen Desmet, Walter De Wevera, Lara Struelens, Hilde Bosmans
Summary: The study describes the development of computational models for lung pathologies indicative of COVID-19. These models were used to generate realistic radiographic images for validation and AI detection. The methodology can aid in testing detection and triaging of COVID-19 suspected cases.
JOURNAL OF MEDICAL IMAGING
(2021)
Proceedings Paper
Geosciences, Multidisciplinary
Jakov V. Toporkov
Summary: This paper examines the errors in sea backscatter characteristics calculated using the Two-Scale Model (TSM) and compares the errors for different descriptors. The study finds that the separation length and incidence angle have significant effects on the error distribution, but the optimal separation value varies for different descriptors.
2022 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS 2022)
(2022)
Article
Fisheries
Mollie E. Brooks, Valentina Melli, Esther Savina, Juan Santos, Russell Millar, Finbarr Gerard O'Neill, Tiago Veiga-Malta, Ludvig Ahm Krag, Jordan Paul Feekings
Summary: There is a need to improve fishing methods to select for certain sizes and species while excluding others. A new tool called selfisher, which is an R package, has been developed to analyze data related to the selectivity of fishing gears. The tool allows for the estimation of fixed and random effects, and includes a bootstrapping procedure. It has been demonstrated through four case studies, showing its potential to model selectivity, teach statistical methods, and improve the repeatability of analyses.
CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES
(2022)
Article
Fisheries
Esther Savina, Bent Herrmann, Rikke P. Frandsen, Ludvig A. Krag
Summary: This paper presents a new method for estimating the length-dependent fish capture modes in gillnets. The study focused on cod in commercial monofilament nylon gillnets and found that the capture modes were dependent on fish size. The findings have implications for improving gear selectivity and efficiency.
ICES JOURNAL OF MARINE SCIENCE
(2022)
Article
Fisheries
Maria Sokolova, Finbarr Gerard O'Neill, Esther Savina, Ludvig Ahm Krag
Summary: Monitoring catch during demersal trawling is crucial for managing high bycatches. This study presents a modified trawl system comprising a sediment suppressing sheet and an in-trawl image acquisition system, which significantly reduces sediment disturbance and allows clear imaging of catch during trawling on soft muddy grounds.
FISHERIES RESEARCH
(2022)
Article
Green & Sustainable Science & Technology
Bingzhong Yang, Bent Herrmann
Summary: This study tested and compared the size selectivity and catch efficiency of four codends for shrimp trawl fishery in the South China Sea. The results showed that increasing mesh sizes or applying specific mesh shapes can improve catch efficiency and size selectivity. Based on the findings, the T0 codend with a mesh size of 35 mm or the T90 codend with a mesh size of 30 mm are recommended as potential choices to mitigate the issue of undersized individuals. This study has important implications for gear-based management in the specific shrimp trawl fishery of the South China Sea.
Article
Fisheries
Marina Masanovic, Bent Herrmann, Jure Brcic
Summary: This study presents a framework for integrating both the size selection processes occurring in the creel on the seabed and the fisher on the vessel. It predicts the impact of mesh size and shape on the size selection in creel fishery targeting the Norway lobster. The research demonstrates the contribution of both processes and suggests an optimal creel mesh size for efficient selection of the targeted sizes of Nephrops.
CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES
(2022)
Article
Fisheries
Bjorn A. Krafft, Andrew Lowther, Ludvig A. Krag
Summary: Bycatch of nontarget species is a significant issue in the Antarctic krill fishery, and understanding its importance and diversity is crucial for managing this key species. Observer coverage is high, and bycatch levels are generally low across gear types.
FISHERIES MANAGEMENT AND ECOLOGY
(2023)
Article
Fisheries
Bjorn Arne Krafft, Ludvig A. Krag, Ronald Pedersen, Egil Ona, Gavin Macaulay
Summary: This study demonstrates the potential for using acoustically based monitoring to estimate catch weight in the Antarctic krill fishery. The results show a linear relationship between acoustically estimated catch weight and observed catch weight, indicating that this method could be used for real-time reporting in similar trawl fisheries.
FISHERIES MANAGEMENT AND ECOLOGY
(2023)
Article
Fisheries
G. Skaret, G. J. Macaulay, R. Pedersen, X. Wang, T. A. Klevjer, L. A. Krag, B. A. Krafft
Summary: Antarctic krill is a vital species in the Southern Ocean and is heavily fished in the Antarctic. The Norwegian Institute of Marine Research has been monitoring krill population using acoustic-trawl methods near the South Orkneys since 2011, and the results show consistently high krill densities in this region. There has been no significant trend in estimated krill biomass over the past 10 years. The study also suggests that the management of the krill fishery in the South Orkneys region is cautious.
ICES JOURNAL OF MARINE SCIENCE
(2023)
Letter
Cardiac & Cardiovascular Systems
Mitsunobu Kitamura, Blanca Trejo-Velasco, Oliver Dumpies, Johannes Rotta detto Loria, Nicolas Majunke, Johannes Wilde, Steffen Desch, Thilo Noack, Holger Thiele, Mohammed Abdel-Wahab
JACC-CARDIOVASCULAR INTERVENTIONS
(2023)
Article
Environmental Sciences
Ercan Avsar, Jordan P. Feekings, Ludvig Ahm Krag
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Fisheries
Zita Bak-Jensen, Bent Herrmann, Juan Santos, Valentina Melli, Daniel Stepputtis, Jordan P. Feekings
Summary: Trawl codends are commonly made of diamond-mesh netting, but the variability in mesh geometry compromises the rationality of size selection. Turning the codend netting 45 degrees to achieve better size selection has shown limited evidence. Our study aimed at quantifying the variability in size selection in square-mesh codends and found that standard square-mesh codends had significantly larger variability compared to fixed diamond-mesh codends.
FISHERIES RESEARCH
(2023)
Article
Oceanography
O. Jonas Palder, Jordan P. Feekings, Shaun Fraser, Valentina Melli
Summary: Under a discard ban, the development of bycatch reduction devices (BRDs) is necessary to exclude unwanted catch from fishing gear. However, reducing catches of one species often leads to considerable losses of other valuable species. This study developed and tested a BRD aimed at reducing cod catches without affecting catches of other commercial species in a mixed demersal trawl fishery. The results demonstrated a successful reduction in cod catches while retaining high numbers of valuable species, representing an important achievement for this fishery.
OCEAN & COASTAL MANAGEMENT
(2023)
Article
Engineering, Marine
Eduardo Grimaldo, Bent Herrmann, Enis N. Kostak, Jesse Brinkhof
Summary: A major challenge for the aquaculture sector is finding sustainable and cost-effective raw materials for feed. This study aimed to develop a more energy-efficient and efficient trawl for harvesting zooplankton. The results showed that the filtration efficiency of the net increased with increasing flow velocity and decreasing solidity and taper angle.
Article
Oceanography
Junita D. Karlsen, Ludvig Ahm Krag, Bent Herrmann
Summary: Fisheries management is transitioning from a single-species approach to an ecosystem-based approach to address the complexities of mixed-species fisheries. A dual compartment codend concept can provide a complex selectivity profile and allow for flexible adjustments at sea, improving compliance with management objectives.
OCEAN & COASTAL MANAGEMENT
(2024)