Article
Engineering, Environmental
Matias Braccini, Mervi Kangas, Vanessa Jaiteh, Stephen Newman
Summary: There is a lack of reliable catch information for sharks and rays worldwide, with many populations considered Data Deficient. In Western Australia, shark and ray species face extinction threats and commercial catch statistics underestimate the actual extraction level. By reconstructing catch data, it was found that actual catches were 57% higher than officially reported, highlighting the impact of fishing on these species.
Article
Oceanography
Caroline Bousquet, Marion Bouet, Michela Patrissi, Francois Cesari, Jean-Baptiste Lanfranchi, Sebastien Susini, Jean-Laurent Massey, Antoine Aiello, Jean-Michel Culioli, Michel Marengo, Pierre Lejeune, Jessica Dijoux, Coralie Duchaud, Marie-Catherine Santoni, Eric D. H. Durieux
Summary: Small-scale fishery plays a significant role in the Mediterranean fleet, but its evaluation is challenging due to the scattered fishing effort. This study focuses on analyzing the characteristics of small-scale fishery in Corsica, an area with low fishing pressure. The study identifies different fishing techniques, species composition, and factors affecting catch per unit effort. The findings provide valuable knowledge for managing artisanal fishing in the Mediterranean.
OCEAN & COASTAL MANAGEMENT
(2022)
Article
Fisheries
Ignacio Ruiz-Jarabo, Miriam Fernandez-Castro, Ismael Jerez-Cepa, Cristina Barragan-Mendez, Montse Perez, Evaristo Perez, Juan Gil, Jesus Canoura, Carlos Farias, Juan Miguel Mancera, Ignacio Sobrino
Summary: This study evaluated the survival and physiological recovery rates of discarded species captured by a hookline in the Strait of Gibraltar. The results showed high survival rates and complete physiological recovery within 24 hours, leading to an exemption from discard for these species by the European Commission. The methodology described in this study can be an important tool to mitigate discards in Europe.
Article
Fisheries
Julia Calderwood, C. Tara Marshall, Karl Haflinger, Joanna Alfaro-Shigueto, Jeffrey C. Mangel, David G. Reid
Summary: Avoiding unwanted catches and reducing discards is an important objective of fisheries management. Fishers can improve selectivity of their fishing operations through technical measures, gear modifications, and adjusting when and where to fish. Real-time information sharing within a fleet can help fishers avoid unwanted catches, but there is often reluctance to share catch information with others.
ICES JOURNAL OF MARINE SCIENCE
(2023)
Article
Environmental Sciences
Farisal U. Bagsit, Eugene Frimpong, Rebecca G. Asch, Harold M. Monteclaro
Summary: The study examined the impact of seasonal fishery closures on specific fish species in the Visayan Sea in the Philippines. It found that the policy had a significant effect on the catch of one species but not the other, and did not lead to significant changes in fishing pressure on other species.
FRONTIERS IN MARINE SCIENCE
(2021)
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
Shuo Li
Summary: As globalization faces increasing challenges, regionalization has the potential to effectively address transboundary issues. This paper explores the incorporation of fisheries policies into regional economic blocs as a solution to improve cross-border fisheries management, using the example of the Common Fisheries Policy of the European Union. The study concludes that a well-designed regional fisheries scheme can incentivize countries to participate and enhance their fisheries management.
Article
Environmental Sciences
Renato Gozzer-Wuest, Rosa Amelia Vinatea Chavez, Gonzalo Olea Stranger, Gonzalo Araya Goncalves, Luciano Hiriart-Bertrand, Rolando Labrana-Cornejo, Enrique Alonso-Poblacion
Summary: Based on a survey conducted in 2019-2020, addressing illegal, unreported, and unregulated fishing, developing a priority national research agenda to improve fisheries management in Chile, addressing the lack of legitimacy of the fisheries law, developing a new national fisheries policy, and updating the Artisanal Fisheries Registry were identified as priority topics for fisheries policy reform in Chile.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Oceanography
Marc Baeta, Marco Antonio Solis, Silvia Frias-Vidal, Laura Claramonte, Anastasia Sepouna, Manuel Ballesteros
Summary: The bivalve wedge clam Donax trunculus in Spain has seen a decline in wild stocks in the Mediterranean region. The hand-operated dredge fishery is still important, but lacks scientific information for sustainable management. This study aims to characterize the fishery, assess its impact on megabenthic fauna, and analyze its effects on the wedge clam.
OCEAN & COASTAL MANAGEMENT
(2023)
Article
Agriculture, Dairy & Animal Science
Ignacio Ruiz-Jarabo, Blanca Partida, Maria Page, Diego Madera, Nuria Saiz, Aitana Alonso-Gomez, Lisbeth Herrera-Castillo, Esther Isorna, Angel L. Alonso-Gomez, Ana I. Valenciano, Nuria de Pedro, Jorge Saez, Maria J. Delgado
Summary: Artisanal fishing is prevalent worldwide, but changes in fishing legislation can have detrimental effects if not adapted to quickly. This study proposes potential improvements for the sector through a pilot study, evaluating the survival and possible recapture of discarded fish. The findings provide a foundation for regulating artisanal fisheries by offering scientific data on discard survival rates and sale prices.
Article
Fisheries
Hayden T. Schilling, Daniel. D. Johnson, Roshan Hanamseth, Iain M. Suthers, Matthew D. Taylor
Summary: This study investigates the variability in commercial catch in the most heavily exploited estuary in southeastern Australia, Wallis Lake. Four main hypotheses are explored, and evidence is found in support of the impact of winter harvest on the following year's catch and the correlation between Pacific Decadal Oscillation (PDO) and catch rates. Co-management arrangements controlling winter fishing effort may lead to improved economic, environmental, and social outcomes from the fishery.
FISHERIES RESEARCH
(2023)
Article
Fisheries
Ian J. Stewart, Allan C. Hicks, Piera Carpi
Summary: This study examines the management of Pacific halibut resources, comparing directed and non-directed commercial fisheries. It found that the potential yield to the directed fishery is generally larger than a simple reallocation of non-directed discards, and that the rate of exchange varies over time.
FISHERIES RESEARCH
(2021)
Article
Ecology
Jasna Maria Luna Marques, Caroline Vieira Feitosa
Summary: This study conducted a productivity and susceptibility analysis of species caught by the handline fishery in the state of Ceara, Northeast Brazil. The results showed that Scomberomorus cavalla had the lowest productivity, while Holocentrus adscensionis had the highest productivity. Lutjanus synagris caught at Batoque MPA showed the highest susceptibility, with high commercial category score, frequency of occurrence, and abundance.
REGIONAL STUDIES IN MARINE SCIENCE
(2022)
Article
Fisheries
Emer Rogan, Andrew J. Read, Per Berggren
Summary: By-catch poses the primary global threat to populations of dolphins and porpoises, and the European Union should adopt a comprehensive plan to protect these species, including regular assessments of population numbers, setting management goals, and controlling by-catch mortality.
FISH AND FISHERIES
(2021)
Article
Environmental Studies
Clive J. Fox
Summary: The study revealed that some inshore crab and lobster stocks in the UK EEZ are facing the issue of over-exploitation, urging fisheries managers to address it urgently. Policymakers should not assume that slightly exceeding the trigger for maximum sustainable biomass means the stocks have been rebuilt. To enhance monitoring, regular assessments, proxy measures, and novel techniques are urgently needed.
Article
Fisheries
A. D. Rijnsdorp, J. Batsleer, P. Molenaar
Summary: The electrical stimulation of pulse trawls significantly improves the footrope selection in flatfish, particularly in plaice and dab, by a factor of 2, and in sole by a factor of 7. There is a slight diurnal pattern in footrope selection, with higher selectivity during the day. The cod-end selectivity is also slightly enhanced by electrical stimulation, retaining more marketable sole, with selection factors comparable to traditional trawls.
FISHERIES RESEARCH
(2021)
Article
Fisheries
Morgane Amelot, Jurgen Batsleer, Eric Foucher, Raphael Girardin, Paul Marchal, Jan Jaap Poos, Klaas Sys
Summary: In the English Channel and North Sea area, skates and rays are vulnerable to fisheries due to their life history characteristics. A Bayesian multispecies biomass production model was used to estimate reference points for these species. Different rebuilding speeds and vulnerabilities were observed within the Rajidae complex, possibly due to variability in life history parameters and fishing strategies.
FISHERIES RESEARCH
(2021)
Article
Multidisciplinary Sciences
C. Roland Pitcher, Jan G. Hiddink, Simon Jennings, Jeremy Collie, Ana M. Parma, Ricardo Amoroso, Tessa Mazor, Marija Sciberras, Robert A. McConnaughey, Adriaan D. Rijnsdorp, Michel J. Kaiser, Petri Suuronen, Ray Hilborn
Summary: Bottom trawling is widely used and impacts seabed habitats. However, the risks from trawling have not been quantified in most regions. This research synthesized evidence from 24 regions worldwide and developed a quantitative indicator of biotic status for sedimentary habitats. The findings highlight the need for more effective management to reduce exploitation and improve stock sustainability and seabed environmental status. The study also found that the area swept by trawling is related to the seabed status, allowing for preliminary predictions of regional status based on the total amount of trawling.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Fisheries
Edward Schram, Pieke Molenaar, Maarten Soetaert, Dirk Burggraaf, Pim G. Boute, Martin J. Lankheet, Adriaan D. Rijnsdorp
Summary: The experiment showed that sandeels exposed to electric fields below 600 V m(-1) did not display spinal injuries or hemorrhages, with equal numbers of minor spinal abnormalities found in both the exposed and control groups. Therefore, it is unlikely that pulse trawl fishery will have a significant adverse effect on the population abundance of sandeels.
ICES JOURNAL OF MARINE SCIENCE
(2022)
Article
Environmental Sciences
Leire Lopetegui-Eguren, Jan Jaap Poos, Haritz Arrizabalaga, Gency L. Guirhem, Hilario Murua, Nerea Lezama-Ochoa, Shane P. Griffiths, Jon Ruiz Gondra, Philippe S. Sabarros, Jose Carlos Baez, Maria Jose Juan-Jorda
Summary: The oceanic whitetip shark, currently classified as Critically Endangered, is often incidentally caught by fisheries targeting other species. This study analyzed observer data from the western Indian Ocean to understand the factors influencing the capture of this species. Sea surface temperature and nitrate concentration were found to be the most important variables predicting the probability of capturing an oceanic whitetip shark. The study also identified higher capture probabilities in fish aggregating devices compared to free schools of tuna.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Fisheries
A. D. Rijnsdorp, G. Aarts, N. T. Hintzen, J. C. van Rijssel, A. M. Winter, J. J. Poos
Summary: This study investigated the exploitation patterns of pulse trawl (PUL) and tickler chain beam trawl (TBT) fishers in harvesting flatfish populations. The results showed that both types of fishers concentrated their efforts in the core of the flatfish patches, using systematic fishing tactics. The catch rates in the core were higher than the background catch rates, but decreased over time due to resource depletion and interference, with interference having a larger impact on TBT fishers.
ICES JOURNAL OF MARINE SCIENCE
(2022)
Article
Environmental Sciences
Edward Schram, Pieke Molenaar, Susan de Koning, Adriaan D. Rijnsdorp
Summary: This study used field experiments to investigate the impact of pulse trawling on marine organisms and found that the direct mortality rate was low and did not differ from untrawled control areas. The results indicate that pulse trawling does not result in mass mortality among marine organisms in the trawl track.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Fisheries
Pim G. Boute, Adriaan D. Rijnsdorp, Johan L. van Leeuwen, W. Sarina M. Versteeg, Remco P. M. Pieters, Martin J. Lankheet
Summary: By studying the injuries in whiting catches on commercial vessels, we found that pulse trawling causes rare injuries in whiting, primarily due to mechanical impact, and is unlikely to result in increased mortality in whiting populations compared to tickler-chain trawling.
FISHERIES RESEARCH
(2022)
Article
Marine & Freshwater Biology
Roeland A. Bom, Aafke Brader, Jurgen Batsleer, Jan-Jaap Poos, Henk W. van der Veer, Anieke van Leeuwen
Summary: Populations of large fish in the North Sea have recently started to increase, possibly due to reduced fishing pressure. However, the recovery of these populations needs to be viewed in a long-term perspective. A study on the critically endangered common skate species complex found that its current abundance is still below historical levels and limited to the northern North Sea.
Article
Environmental Sciences
T. Stoffers, A. D. Buijse, G. W. Geerling, L. H. Jans, M. M. Schoor, J. J. Poos, J. A. J. Verreth, L. A. J. Nagelkerke
Summary: River restoration is crucial for combating biodiversity loss, but its efficacy depends on various environmental factors and spatial scales.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Ecology
Fabian M. Mollet, Katja Enberg, David S. Boukal, Adriaan D. Rijnsdorp, Ulf Dieckmann
Summary: Sexual size dimorphism is caused by differences in selection pressures and life-history trade-offs faced by males and females. Two mechanisms, namely male reproductive behavior and diminishing returns on male reproductive investments, can account for female-biased sexual size dimorphism in North Sea plaice. Observations suggest that higher investments in male reproductive behavior require increased energy acquisition, leading to a delay in maturation and contradicting male-biased sexual size dimorphism. However, diminishing returns on male reproductive investments alone can qualitatively explain the observed sexual size dimorphism, although the quantitative match is imperfect.
ECOLOGY AND EVOLUTION
(2023)
Article
Environmental Studies
Antonello Sala, Jochen Depestele, Aysun Guemues, Pascal Laffargue, J. Rasmus Nielsen, Hans Polet, Chris J. Smith, Mustafa Zengin, Francois Bastardie, Ole R. Eigaard, Katell G. Hamon, Frank Jensen, Alessandro Lucchetti, Sonia Mehault, Emilio Notti, Nadia Papadopoulou, Andrea Petetta, Mattias Skold, Benoit Vincent, Adriaan D. Rijnsdorp
Summary: The impact of bottom gear fishing depends on the sensitivity of the benthic community, fishing intensity, and the depth of penetration of the gears. Disturbance of benthic populations and physical modification of bottom substrates are the outputs of bottom fishing. Innovative solutions, such as alternative gears and catch stimuli, as well as the adoption of technical innovations, can help reduce the adverse impacts of bottom fisheries on demersal ecosystems. The study also explores strategies to reduce fuel use, greenhouse gas emissions, and bycatch as incentives for the fishing industry to reduce seabed impacts.
Article
Ecology
Emil De Borger, Justin Tiano, Ulrike Braeckman, Adriaan D. Rijnsdorp, Karline Soetaert
Summary: Bottom trawling in shelf seas can have significant impacts on benthic metabolism, leading to reduced organic carbon mineralization rates and changes in oxygen and nitrate concentrations in sediment. The effects vary depending on trawling frequency and sediment type, with physical organic carbon removal through trawl-induced resuspension of sediments identified as the main cause of the changes in the mineralization process.
