Article
Fisheries
Jacob Burbank, Francois Turcotte, Francois-Etienne Sylvain, Nicolas Rolland
Summary: This study identifies the ecosystem and demographic factors influencing the recruitment of Atlantic herring stocks and emphasizes the importance of considering ecosystem characteristics when examining recruitment. The findings highlight the benefit of considering multiple factors to better understand recruitment trends and provide a framework for researchers to investigate and model recruitment of other fish populations.
CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES
(2023)
Review
Fisheries
Jacob Burbank, Rachel A. DeJong, Francois Turcotte, Nicolas Rolland
Summary: Recruitment is a critical component of population dynamics and variability, with multiple factors influencing the recruitment of Atlantic herring. Poor understanding of recruitment is a major uncertainty in fisheries management. Temperature, prey availability, and predation are the main factors impacting Atlantic herring recruitment. A holistic approach is needed to improve understanding and management of Atlantic herring recruitment.
FISHERIES OCEANOGRAPHY
(2023)
Article
Oceanography
S. K. Shotwell, J. L. Pirtle, J. T. Watson, A. L. Deary, M. J. Doyle, S. J. Barbeaux, M. W. Dorn, G. A. Gibson, E. D. Goldstein, D. H. Hanselman, A. J. Hermann, P. J. F. Hulson, B. J. Laurel, J. H. Moss, O. A. Ormseth, D. Robinson, L. A. Rogers, C. N. Rooper, I. Spies, W. W. Strasburger, R. M. Suryan, J. J. Vollenweider
Summary: In the past two decades, extensive monitoring and assessment of the large marine ecosystems in Alaska have been conducted. Research projects have focused on understanding fish population fluctuations in relation to the surrounding environment. The Gulf of Alaska Integrated Ecosystem Research Project (IERP) is an example of such efforts, which has produced valuable observations, experiments, and models. However, the integration of these findings into single-species stock assessments has been limited. To address this, a new framework called Ecosystem and Socioeconomic Profile (ESP) is proposed to include the products of these IERPs and improve the stock assessment process. A case study using data synthesis of five commercially and ecologically valuable species in the Gulf of Alaska showed that informed indicators based on ecosystem information differed from non-informed indicators, highlighting the importance of considering ecosystem linkages in stock assessments. The coordinated nature of the IERP allows for the creation of informed indicators that would not be possible with individual studies alone. The integration of these indicators into the ESPs ensures that ecosystem linkages are evaluated alongside stock assessments and can inform management decisions.
DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
(2022)
Article
Economics
Rognvaldur Hannesson
Summary: The collapse of the Norwegian spring spawning herring in the late 1960s was caused by a combination of severe stock depletion, open access exploitation, and a sudden leap in technology. It took about twenty years for the stock to recover. The study also found that uncertainty in stock assessment had little effect.
ECONOMIC ANALYSIS AND POLICY
(2022)
Article
Multidisciplinary Sciences
Edward D. D. Farrell, Leif Andersson, Dorte Bekkevold, Neil Campbell, Jens Carlsson, Maurice W. W. Clarke, Afra Egan, Arild Folkvord, Michael Gras, Susan Maersk Lusseau, Steven Mackinson, Cormac Nolan, Steven O'Connell, Michael O'Malley, Martin Pastoors, Mats E. E. Pettersson, Emma White
Summary: This study utilized genetic sequencing to analyze Atlantic herring, revealing temporal and spatial differences between populations and developing a highly accurate genetic assignment model to determine the population origin of herring caught.
ROYAL SOCIETY OPEN SCIENCE
(2022)
Article
Fisheries
Dorte Bekkevold, Florian Berg, Patrick Polte, Valerio Bartolino, Henn Ojaveer, Henrik Mosegaard, Edward D. Farrell, Jelena Fedotova, Jakob Hemmer-Hansen, Bastian Huwer, Vanessa Trijoulet, Christoffer Moesgaard Albertsen, Angela P. Fuentes-Pardo, Tomas Groehsler, Mats Pettersson, Teunis Jansen, Arild Folkvord, Leif Andersson
Summary: We developed and validated a mixed-stock analysis (MSA) method to assign individuals to populations in mixed-stock samples of Atlantic herring. The method showed unprecedented accuracy in monitoring spatio-temporal dynamics with complex stock mixing. The analysis revealed potential overestimation of certain stocks and the importance of re-evaluating stock definitions.
ICES JOURNAL OF MARINE SCIENCE
(2023)
Article
Ecology
Brendan M. Connors, Matthew R. Siegle, Joel Harding, Steven Rossi, Benjamin A. Staton, Michael L. Jones, Michael J. Bradford, Randy Brown, Bill Bechtol, Beau Doherty, Sean Cox, Ben J. G. Sutherland
Summary: Population diversity contributes to ecosystem resilience and stability of ecosystem services. However, characterizing this diversity is challenging, especially in large and remote regions. This study used genetic stock identification and state-space run-reconstruction models to estimate migration timing and return abundance for geographically and genetically distinct Chinook salmon populations in the Canadian Yukon River, demonstrating the benefits and consequences of population diversity in decision-making.
ECOLOGICAL APPLICATIONS
(2022)
Article
Fisheries
Poul Holm, John Nicholls, Patrick W. Hayes, Josh Ivinson, Bernard Allaire
Summary: The concept of Accelerated Marine Extraction is introduced to emphasize two periods where cod and herring fisheries grew rapidly and outpaced human demographic growth. The study shows that while cod landings increased significantly from 1520 to 1790, herring landings remained stable in the 16th century and then declined before a resurgence in the mid-18th century. This research highlights the crucial role of marine resources in enhancing European food security during periods of demographic growth.
FISH AND FISHERIES
(2022)
Article
Biodiversity Conservation
Amanda Kuepfer, Richard B. Sherley, Paul Brickle, Alexander Arkhipkin, Stephen C. Votier
Summary: Incidental mortality in trawl fisheries poses a serious threat to seabird sustainability. Strategic batch discarding is an effective mitigation measure to limit discard discharge, but supporting studies are rare. This study validates the efficacy of batch discarding as a mitigation measure in the Falkland Islands trawl fleet and highlights the importance of complete waste storage.
BIOLOGICAL CONSERVATION
(2022)
Article
Environmental Sciences
Kristen A. Anstead, Katie Drew, David Chagaris, Matt Cieri, Amy M. Schueller, Jason E. McNamee, Andre Buchheister, Genevieve Nesslage, Jim H. Uphoff, Michael J. Wilberg, Alexei Sharov, Micah J. Dean, Jeffrey Brust, Michael Celestino, Shanna Madsen, Sarah Murray, Max Appelman, Joseph C. Ballenger, Joana Brito, Ellen Cosby, Caitlin Craig, Corrin Flora, Kurt Gottschall, Robert J. Latour, Eddie Leonard, Ray Mroch, Josh Newhard, Derek Orner, Chris Swanson, Jeff Tinsman, Edward D. Houde, Thomas J. Miller, Howard Townsend
Summary: Atlantic menhaden is a key fishery resource and forage species on the US East Coast. Concerns over the impact of harvest on ecosystem processes led to a shift from single-species to ecosystem approaches in assessment and management. The adoption of an ecological modeling framework represents a significant advance in forage fish management on the US Atlantic Coast.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Environmental Sciences
Angela Helen Martin, Erica M. Ferrer, Corallie A. Hunt, Katinka Bleeker, Sebastian Villasante
Summary: International objectives for sustainable development and biodiversity conservation aim to restore fish populations to healthy levels and reduce fishing impacts on marine ecosystems. This study investigates the potential for lowering emissions intensity and impacts on organic carbon stocks through ending overfishing and rebuilding stocks, using the recovery of European hake stocks as a case study and focusing on the hake fisheries of France, Spain, and the United Kingdom.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Fisheries
Andrew K. Carlson, Daniel Rubenstein, Simon A. Levin
Summary: The study highlights the importance of fisheries in global food and nutrition security, livelihoods, and poverty alleviation, but also the lack of comprehensive assessment of human-environmental interactions in fisheries management, limiting social-ecological resilience. The research found that catches by nations in their own exclusive economic zones outweighed those in adjacent zones, but adjacent-zone fishing was the largest-tonnage type in more zones. Interactions among fishing sectors were generally positive but notably negative for artisanal fishing sectors.
FISHERIES RESEARCH
(2021)
Article
Ecology
Daniel G. Boyce, Brian Petrie, Kenneth T. Frank
Summary: Atlantic herring landings in Canada have been the greatest since 1960, with the Scotian Shelf-Bay of Fundy fishery being a major contributor. However, despite management measures implemented since 2003, herring biomass remains low and declining. Various factors such as exploitation rate, geographic distribution of fishing, and recruitment have been identified as key drivers of herring variability.
ECOLOGY AND EVOLUTION
(2021)
Article
Environmental Sciences
Jacob W. Bentley, Mathieu G. Lundy, Daniel Howell, Steven E. Beggs, Alida Bundy, Francisco de Castro, Clive J. Fox, Johanna J. Heymans, Christopher P. Lynam, Debbi Pedreschi, Pia Schuchert, Natalia Serpetti, Johnny Woodlock, David G. Reid
Summary: Incorporating ecosystem information into fisheries stock assessments has proven challenging due to uncertainty of input data and structural uncertainty of complex multi-species models. This study proposes a new approach using stock-specific ecosystem indicators to set an ecosystem-based fishing mortality reference point (FECO). The FECO can be used to adjust fishing mortality based on ecosystem conditions, providing a quantitative way of incorporating ecosystem information into catch advice.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Biodiversity Conservation
Anais Dasnon, Karine Delord, Adrien Chaigne, Christophe Barbraud
Summary: The impact of industrial fisheries on marine biodiversity, especially in terms of large pelagic vertebrate fishing bycatch and its effects on seabird populations, is studied in this research. By using multiple methods such as capture-recapture models and population matrix models, the study shows that the implementation of bycatch mitigation measures can improve the survival and breeding success of seabirds.
JOURNAL OF APPLIED ECOLOGY
(2022)
