Article
Fisheries
Ming Sun, Yunzhou Li, Yong Chen
Summary: Understanding and managing fishery selectivity is crucial for fisheries management. China's domestic fisheries have been perceived as unselective, but the evidence is lacking. This study found that primary target species were absent in many Chinese fisheries, and low-value and juvenile mixed catch were common. Key commercial taxa were subject to multi-gear and multispecies fisheries, but selective gears were used infrequently. Management actions are needed to control fishing pressure on primary target species and by-product species.
FISH AND FISHERIES
(2023)
Article
Environmental Sciences
Peter Ljungberg, Sara Konigson, Sven-Gunnar Lunneryd
Summary: This study used modified pontoon traps to reduce the impact of seals on cod fisheries in the southern Baltic Sea. The design of the pontoon traps was tested for its effects on catch rates, and it was found that using a leader net with a 100 mm center-knot to center-knot mesh-size on a bottom-set fish chamber yielded the highest catch rates. No seal-induced damage to cod was observed in the pontoon traps.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Ecology
Shekoofeh Farahmand, Nathalie Hilmi, Mine Cinar, Alain Safa, Vicky W. Y. Lam, Salpie Djoundourian, Wassim Shahin, Emna Ben Lamine, Alexandre Schickele, Paolo Guidetti, Denis Allemand, Virginie Raybaud
Summary: This study aims to identify the most affected stocks by climate change and more vulnerable countries in the region. Results show that temperate-cold species are the most sensitive, while temperate-warm species have the lowest sensitivity. Egypt, Tunisia, and Libya are the most vulnerable countries due to high exposure and low adaptive capacity. Slovenia, France, and Croatia have the lowest vulnerability due to low exposure and sensitivity and high adaptive capacity. The southern Mediterranean countries would be the most vulnerable to climate-induced effects on marine fisheries.
ECOLOGICAL ECONOMICS
(2023)
Article
Environmental Sciences
Kelsey Richardson, Britta Denise Hardesty, Joanna Zofia Vince, Chris Wilcox
Summary: The study found that abandoned, lost or otherwise discarded fishing gear is a significant contributor to global marine plastic pollution, negatively impacting fishers, the seafood industry, and marine wildlife and habitats. Major causes of fishing gear losses include bad weather and interactions with wildlife. Effective measures to prevent gear losses include gear maintenance and crew training in gear management.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Environmental Sciences
Loretta Malvarosa, Gualtiero Basilone, Pierluigi Carbonara, Paolo Carpentieri, Maria Cozzolino, Maria Cristina Follesa, Monica Gambino, Vita Gancitano, David Parreno Duque, Paola Pesci, Ilaria Vielmini, Giuseppe Scarcella
Summary: There is a misalignment between Mediterranean fisheries legislation and effectiveness of management due to overfishing, discontent among stakeholders, and inadequate management plans. Stakeholders' understanding of management plans is crucial for successful implementation of policies. The paper assesses the sustainability of selected Southern Italian fisheries, focusing on Performance Indicators, ecosystem impact, and stakeholder involvement. The fisheries were found to have potential for improvement, particularly in stock sustainability, highlighting the need for better management. Data availability and stakeholder participation are essential for mapping and evaluating fishing activities towards sustainability.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Environmental Studies
Molly Scott, Edward Cardona, Kaylee Scidmore-Rossing, Mark Royer, Jennifer Stahl, Melanie Hutchinson
Summary: Changes to fishing gear configurations have the potential to decrease injury and mortality for non-target species in commercial fisheries. This two-part study found that switching from wire to monofilament leaders can reduce shark catch rates while maintaining catch rates of target species, and that monofilament leaders are more durable than wire leaders after soaking.
Article
Fisheries
Vicenc Molto, Ignacio A. Catalan, Andres Ospina-Alvarez, Pilar Hernandez, Ruben H. Roa-Ureta
Summary: Generalized depletion models are useful for managing data-limited fisheries and have been applied to the Mediterranean common dolphinfish fishery. A multiannual five-fleet model was developed using monthly data from 2008 to 2019. The results show high natural mortality rate and intra-season fluctuations in biomass, but indicate that the stock is fished within sustainable limits.
ICES JOURNAL OF MARINE SCIENCE
(2022)
Article
Environmental Sciences
Jan Steger, Beata Dunne, Martin Zuschin, Paolo G. Albano
Summary: Research in the Israeli rocky intertidal area found that competition between non-indigenous and native species led to a decline in the native species, with potential asymmetric competition. The non-indigenous and native assemblages had highly similar trait compositions, possibly leading to niche overlap.
MARINE POLLUTION BULLETIN
(2021)
Article
Environmental Sciences
Paritosh C. Deshpande, Sidra Tul Muntaha, Ragnhild Bjerkvik Alnes
Summary: Marine plastic pollution is becoming a major issue that affects both marine and terrestrial life. A study conducted in Norway, a fishing-dominant region, found that approximately 383 tons of fishing ropes are lost annually in Norwegian waters, endangering fish species. The study highlights the need for circular economy practices and efficient recycling technologies to address the issue.
MARINE POLLUTION BULLETIN
(2023)
Review
Environmental Sciences
Alexa Sugpatan Abangan, Dorothee Kopp, Robin Faillettaz
Summary: With the advancement of observation systems, artificial intelligence (AI) has provided researchers with efficient and cost-effective tools to process imagery data on fish behavior, resulting in human-like accuracy in fish detection and species categorization. However, there is a lack of robust tools to track fish movements and interpret fish interactions with fishing gears, especially for temperate fishes. By conducting a bibliometric analysis, this study reviews the recent advances and applications of AI in fish tracking, classification, and behavior recognition, highlighting the challenges in transforming external stimuli into interpretable features. The findings show the potential of AI in improving gear selectivity and meeting sustainable fishing goals.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Environmental Studies
Marc Baeta, Marco Antonio Solis, Manuel Ballesteros, Omar Defeo
Summary: The study examines the historical, social, and ecological context of striped venus clam fisheries in the western Mediterranean Sea, highlighting the role of inadequate management and increased fishing capacity in the decline of clam landings. Recommendations include closure of the fishery in the Ebro Delta, implementation of a Spanish Management Fishery Plan, and establishment of a supra-regional Management Plan for the striped venus clam on the Mediterranean coast of Spain.
Article
Multidisciplinary Sciences
Danmei Chen, Xiangjun Li
Summary: In this paper, we determine the upper bounds for the m-competition indices of doubly symmetric primitive digraphs DSn(d), and show that these bounds can be reached under certain conditions.
Article
Environmental Studies
Joan Drinkwin, Kyle Antonelis, Madison Heller -Shipley, Paul Rudell, Michael Etnier, Tom Good, Anna Elz, Jason Morgan
Summary: This study reports the results of clearing derelict gillnets from the Salish Sea from 2002 to 2021. A total of 5638 nets were removed, covering an area of 11.6 km2. The Reporting, Response, and Retrieval (RRR) Program implemented in 2012 has successfully reduced re-accumulation and long-term impacts on species and habitats.
Article
Engineering, Electrical & Electronic
Onur Can Kalay, Esin Karpat, Ahmet Emir Dirik, Fatih Karpat
Summary: This study proposed a one-dimensional convolutional neural network (1-D CNN) model to diagnose tooth root cracks for standard and asymmetric involute spur gears. The dynamic characteristics of asymmetric gears and the advantage of tooth asymmetry in detecting tooth cracks were investigated. The findings showed that using an asymmetric (20 degrees/30 degrees) tooth profile could improve the classification accuracy of the developed 1-D CNN model by up to 12.8% compared to a standard (20 degrees/20 degrees) design.
Article
Environmental Studies
Tricia A. Lovell
Summary: The issue of abandoned, lost and otherwise discarded fishing gear (ALDFG) is a complex global challenge that affects both industrial fleets and small-scale fisheries. There are significant knowledge gaps in our understanding of ALDFG and its management in the Eastern Caribbean and other regions. Weaknesses have been identified in the legal, regulatory and policy landscape for the management of ALDFG in the Eastern Caribbean, including outdated laws and ineffective marine pollution instruments. Improvements to the framework and targeted research are necessary to address this complex challenge.
Article
Fisheries
Francesc Maynou, Ana Sabates, Vanesa Raya
FISHERIES OCEANOGRAPHY
(2020)
Article
Environmental Sciences
F. Maynou, A. Sabates, E. Ramirez Romero, I. A. Catalan, V Raya
Article
Ecology
Vanesa Raya, Jordi Salat, Jordi Sabates
MARINE ECOLOGY PROGRESS SERIES
(2020)
Article
Oceanography
Francesc Maynou
OCEAN & COASTAL MANAGEMENT
(2020)
Article
Fisheries
Alfredo Garcia-De-Vinuesa, Mike Breen, Hugues P. Benoit, Francesc Maynou, Montserrat Demestre
FISHERIES RESEARCH
(2020)
Article
Marine & Freshwater Biology
F. Maynou, E. Galimany, M. Ramon, M. Sole
ESTUARINE COASTAL AND SHELF SCIENCE
(2020)
Article
Oceanography
S. Pineiro, C. Gonzalez-Pola, J. M. Fernandez-Diaz, A. C. Naveira-Garabato, R. Sanchez-Leal, P. Puig, J. Salat, R. Balbin
Summary: The major deep-convection activity in the northwestern Mediterranean during winter 2005 led to the formation of a complex deep-water structure known as the Western Mediterranean Transition (WMT), which significantly altered the properties of the deep layers in this region. The rapid erosion of the WMT's near-bottom thermohaline signal observed during 2005-2007 is believed to be a result of local bottom-intensified mixing. By using a one-dimensional diffusion model, the evolution of the WMT structure during this period was successfully reproduced, indicating that strong depth-intensified mixing played a significant role in shaping the deep waters during that time.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2021)
Article
Environmental Sciences
Silvia Gomez, Francesc Maynou
Summary: Fishing communities in the Mediterranean Sea are facing challenges in dealing with ecosystem-based management measures aimed at reducing fishing effort. Stakeholders have mixed reactions to the Western Mediterranean Multi-Annual Demersal Fisheries Plan (WM MAP), with fishers disagreeing with the new regulations while scientists tend to support it. However, all stakeholders agree that balancing cultural heritage values and exploring alternative marketing systems can improve the economic and social viability of fisheries. This highlights the need for a more integrated approach that considers the cultural roots of fishing activity.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Oceanography
Francesc Maynou, Alfredo Garcia-de-Vinuesa, Pilar Sanchez, Montserrat Demestre
Summary: A bioeconomic model was developed to assess the impact of more selective trawl nets on the objectives of the European Multi-Annual Plan for demersal fisheries in the Western Mediterranean. The results indicate that while the selectivity modifications may not reach the target fishing mortality by 2025, there is projected significant biomass recovery for European hake and red mullet stocks.
OCEAN & COASTAL MANAGEMENT
(2021)
Review
Oceanography
Mikel Latasa, Renate Scharek, Xose Anxelu G Moran, Andres Gutierrez-Rodriguez, Mikhail Emelianov, Jordi Salat, Montserrat Vidal, Marta Estrada
Summary: A detailed study on the composition and dynamics of phytoplankton in the northwestern Mediterranean Sea revealed significant variability in different seasons and environmental conditions.
PROGRESS IN OCEANOGRAPHY
(2022)
Article
Fisheries
Susanna Pla, Francesc Maynou, Francesc Piferrer
Summary: This study found the presence of hermaphroditism in fishes, mainly teleosts. Sequential hermaphrodites are more common than simultaneous hermaphrodites, and protogyny is more common than protandry. Some hermaphroditic species can live in freshwater, but more are from marine environments. Different types of sex change have different associations with habitats.
REVIEWS IN FISH BIOLOGY AND FISHERIES
(2021)
Article
Ecology
Francesc Maynou
Summary: The exploitation of mixed fisheries involves trade-offs between fisheries rent, production, and resource conservation. An optimization bioeconomic model was built for the Catalonia demersal fishery to analyze the trade-offs between employment and profits, showing that different management policies can impact profitability and job availability.
REGIONAL STUDIES IN MARINE SCIENCE
(2021)
Review
Oceanography
Joan Mir-Arguimbau, M. Mar Flexas, Jordi Salat, Paloma Martin, Marc Balcells, Nuria Raventos, Ana Sabates
Summary: Fish recruitment variability is influenced by complex interactions between biological and physical processes. This study investigates the impact of environmental factors on the recruitment success of blue whiting in the NW Mediterranean. The researchers reconstruct early life history traits of blue whiting through otolith microstructure analysis and find that different oceanographic conditions in 2017 and 2018 lead to variations in spawning, growth, and condition of blue whiting recruits. The study suggests that severe winter conditions can improve recruitment of temperate water fish in the NW Mediterranean Sea.
PROGRESS IN OCEANOGRAPHY
(2022)
Article
Marine & Freshwater Biology
Alfredo Garcia-de-Vinuesa, Francesc Maynou, Montserrat Demestre
Summary: The current EU fisheries policy encourages improving handling practices to increase discard survival. In the Mediterranean upper slope trawl fishery, a high percentage of discards, including Nephrops norvegicus juveniles, are returned to the sea. The survival probability of N. norvegicus discards is related to on-board vitality and varies seasonally, being particularly low in summer. Immersing N. norvegicus in cooled seawater on board during catch selection and discard time can improve discard survival rate.
Article
Environmental Sciences
Lorenzo D'Andrea, Aida Campos, Karim Erzini, Paulo Fonseca, Simone Franceschini, Stefanos Kavadas, Irida Maina, Francesc Maynou, Tommaso Russo
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2020)
