Article
Ecology
Timothy P. O'Donnell, Timothy J. Sullivan
Summary: The study found that Atlantic cod in the western Gulf of Maine are managed as a single stock, but actually consist of two spawning groups (spring and winter) with significant genetic differentiation. By selecting specific SNP panels, researchers can effectively differentiate between different spawning groups and genders.
ECOLOGY AND EVOLUTION
(2021)
Article
Geosciences, Multidisciplinary
Semyon A. Grodsky, Douglas Vandemark, Nicolas Reul, Hui Feng, Julia Levin
Summary: Winter freshwater transport into the Gulf of Maine is controlled by seasonal velocity increase in the upstream Nova Scotia Current. Multiple factors, including variable wind forcing, can contribute to surface salinity anomalies in the Gulf of Maine. The relationship between winter wind and Nova Scotia Current transport variability has been confirmed using satellite data and ocean simulations.
JOURNAL OF MARINE SYSTEMS
(2021)
Article
Oceanography
J. C. Levin, S. A. Grodsky, D. Vandemark, J. L. Wilkin
Summary: An unusually large positive salinity anomaly was observed in the eastern Gulf of Maine in winter 2017-2018. The decrease in freshwater transport due to northeastward Scotian Shelf wind anomalies is one factor driving the salinity change. The major factor driving the extreme positive satellite-observed sea surface salinity anomaly is the anomalous vertical entrainment of saltier subsurface Gulf water.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2022)
Article
Marine & Freshwater Biology
Carl Baden, Mads Christoffersen, Hugo Flavio, Elliot Brown, Kim Aarestrup, Jon C. Svendsen
Summary: This study used acoustic telemetry to investigate the spawning migrations of turbot and European flounder in the estuary of Roskilde Fjord. The findings suggest that turbot tend to remain in the southern part of the fjord during the spawning season, where the low salinity may limit the successful development of their eggs and larvae. In contrast, European flounder migrate towards more marine waters prior to spawning, indicating a diverse utilization of spawning areas. These results are important for future management and stocking of suitable turbot populations.
JOURNAL OF SEA RESEARCH
(2022)
Article
Fisheries
Patrick G. Gargan, Finn okland, Samuel Shephard, Colm Fitzgerald, Martin O'Grady
Summary: The study found that ferox trout in Ireland mainly spawn in the Cong River of Lough Corrib and the Cong Canal and Cong River of Lough Mask, highlighting the vulnerability of these populations. Conservation measures were introduced in both catchments in response to these findings.
JOURNAL OF FISH BIOLOGY
(2021)
Article
Fisheries
Ondrej Slavik, Pavel Horky
Summary: Wild burbot displayed increased energy consumption and lower movement activity during the expected peak spawning period, while farmed burbot showed the opposite pattern. The study also found that farmed and wild fish exhibited differences in sexually conditioned energy consumption and spatial distribution.
AQUACULTURE ENVIRONMENT INTERACTIONS
(2021)
Review
Oceanography
David W. Townsend, Neal R. Pettigrew, Maura A. Thomas, Stephen Moore
Summary: We analyzed a 19-year time series of mooring data and in situ nitrate data collected in the Jordan Basin in the Gulf of Maine. The analyses confirmed previous findings that the Gulf of Maine has been warming due to air-sea heat fluxes. The warming is primarily attributed to changes in advective heat fluxes from neighboring shelf and slope regions, leading to a new baseline of warmer temperatures and higher salinities in the Gulf.
PROGRESS IN OCEANOGRAPHY
(2023)
Article
Limnology
Dan Seidov, Alexey Mishonov, Rost Parsons
Summary: Recent decades have seen a significant warming trend in the Gulf of Maine, Scotian Shelf, and Slope Sea regions, with the Scotian Shelf and Slope Water region experiencing faster warming than the Gulf of Maine. This accelerated warming is likely a result of changes in the Gulf Stream extension region's circulation patterns.
LIMNOLOGY AND OCEANOGRAPHY
(2021)
Article
Oceanography
Jiabi Du, Weifeng (Gordon) Zhang, Yizhen Li
Summary: This study investigates the impact of Gulf Stream warm-core rings (WCRs) on slope water intrusion in the Gulf of Maine (GoM). The analysis reveals a significant relationship between inter-annual variations of WCR activities and bottom salinity, suggesting the importance of WCRs in modulating slope water variability. Numerical simulations show that baroclinic coastal-trapped waves (CTWs) generated by the WCR-topography interaction enhance the subsurface along-channel inflow and contribute to increased slope water intrusion into the GoM.
JOURNAL OF PHYSICAL OCEANOGRAPHY
(2022)
Article
Environmental Sciences
Nina M. Whitney, Alan D. Wanamaker, Caroline C. Ummenhofer, Beverly J. Johnson, Nathaniel Cresswell-Clay, Karl J. Kreutz
Summary: Warming in the Gulf of Maine, western North Atlantic, since the late 1800s reversed a 900-year cooling trend, likely as a result of increasing atmospheric greenhouse gases, according to ocean temperature and water mass reconstructions from bivalves and climate model simulations.
COMMUNICATIONS EARTH & ENVIRONMENT
(2022)
Article
Geosciences, Multidisciplinary
Michael Schindelegger, Daniel P. Kotzian, Richard D. Ray, J. A. Mattias Green, Sophie Stolzenberger
Summary: The Gulf of Maine's M-2 ocean tide shows a spatially coherent amplitude change of 1-3 cm on interannual time scales, with 32%-48% of the variability explained by stratification changes. Fluctuations in barotropic-to-baroclinic energy conversion on the continental slope are found to be the main driving factor, and this process may have caused the decade-long decrease in tidal amplitude starting from 1980/81.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Biodiversity Conservation
Thomas J. Trott
Summary: This study examined the similarity of macroinvertebrate species assemblages from exposed rocky headlands in the Gulf of Maine to understand the mesoscale patterns and their relationship with environmental factors. The study found that species assemblage similarity was correlated with latitude, and there was a distinct grouping of sampling sites separating two Gulf regions. Species turnover accounted for a large portion of the regional dissimilarity, with molluscs and crustaceans contributing the most. Satellite-derived temperatures explained a significant amount of the regional variation. These findings suggest that hydrographic features and associated environmental conditions influence community dynamics and shape the dissimilarity between Gulf regions.
Article
Biochemistry & Molecular Biology
Dane C. Sands, Melissa Carsky, Erin Donovan, Lara L. Virgilio, Kathryn Vanya Ewart
Summary: The winter flounder synthesizes a variety of antifreeze proteins, with the most studied being AFP6, which interacts with curcumin in aqueous solutions and can be detected through changes in curcumin fluorescence. This interaction does not affect the protein's secondary structure but results in shifts in absorbance and fluorescence emission of curcumin, providing a new method for detecting AFP6. Additionally, curcumin binding could open up new avenues for studying this protein.
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
(2022)
Article
Environmental Sciences
Keri A. Baugh, Jooke Robbins, Irvin R. Schultz, Gina M. Ylitalo
Summary: Contaminant studies in cetaceans provide information about pollutant levels and patterns. Due to reproductive factors, studies usually focus on male cetaceans. However, understanding contaminant burdens in female cetaceans is important for assessing potential impacts.
ENVIRONMENTAL POLLUTION
(2023)
Article
Biochemistry & Molecular Biology
Dane C. Sands, Melissa Carsky, Erin Donovan, Lara L. Virgilio, Kathryn Vanya Ewart
Summary: The winter flounder synthesizes a variety of antifreeze proteins, including AFP6, which interacts with curcumin and results in changes in the fluorescence properties of the curcumin. The secondary structure and unfolding of AFP6 were not affected by curcumin, but the absorbance and fluorescence emission of curcumin were altered in the presence of AFP6.
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
(2022)
Article
Fisheries
Miguel Petrere Jr, Davi Butturi-Gomes
Summary: This short communication aims to raise awareness about the misuse of confidence intervals in Ecology and Fisheries statistical models that ignore the lack of independence.
FISHERIES RESEARCH
(2024)
Article
Fisheries
Peter-John F. Hulson, Benjamin C. Williams
Summary: This study evaluates the impact of considering ageing error and growth variability on the determination of input sample size (ISS) in statistical catch-at-age assessment models. The results show that including these sources of uncertainty decreases the ISS determined through bootstrap methods. This indicates that there is more variability in age composition and conditional age-at-length data than previously accounted for. Including these sources of uncertainty improves the estimation of ISS and subsequently improves the quality of stock assessment models.
FISHERIES RESEARCH
(2024)
Article
Fisheries
Jason M. Cope
Summary: Fishery resource assessment is a complex and challenging task, but with the use of different analysis methods and tools, effective management guidance can be provided even with limited data and resources.
FISHERIES RESEARCH
(2024)
Article
Fisheries
Regina L. Cunha, Joana I. Robalo, Sara M. Francisco, Ines Farias, Rita Castilho, Ivone Figueiredo
Summary: Recent advances in genomics have greatly contributed to the assessment of fish stocks by providing precise identification of genetic boundaries. This study used a genotyping-by-sequencing approach to reveal the existence of an additional genetic cluster of blackspot seabream in the northeast Atlantic, which was not previously identified. Factors such as ocean circulation patterns and local upwelling may play a role in the genetic differentiation observed in this study.
FISHERIES RESEARCH
(2024)
Article
Fisheries
Huihua Lee, Mark N. Maunder, Kevin R. Piner
Summary: Estimating growth is important for fish population assessment. Integrated assessment models and the influence of misfitting size composition data have renewed interest in how growth is modeled. The available data types control how the length-at-age relationship is estimated. Estimating length-at-age is complex due to multiple sources of biological variability and difficulties in obtaining representative samples.
FISHERIES RESEARCH
(2024)
Article
Fisheries
A. Ladino, I. Perez-Arjona, V. Espinosa, M. Chillaron, V. Vidal, L. M. Godinho, G. Moreno, G. Boyra
Summary: This study examines the acoustic properties of skipjack tuna and Atlantic mackerel, both bladderless pelagic fish species, and explains the significant differences observed. The research shows that the differences in material properties of their tissues predict a more than 10 dB greater reduced target strength in skipjack compared to mackerel at certain frequencies.
FISHERIES RESEARCH
(2024)
Article
Fisheries
Nelly Pena-Cutimbo, Cristel Cordero-Maldonado, Clara Ortiz-Alvarez, Joanna Alfaro-Shigueto, Jeffrey C. Mangel
Summary: Bycatch is a global problem for marine megafauna. This study assessed the bycatch interactions of the Peruvian artisanal purse-seine fishery in 2019 and found that all taxa groups were affected by bycatch. Dusky dolphins, guanay cormorants, and eagle rays were the most frequently reported bycatch species.
FISHERIES RESEARCH
(2024)
Article
Fisheries
Jen-Ming Liu, Po-Yuk So
Summary: The set-net fishery is an environmentally friendly fishery posing little risk to the marine ecosystem. This study identified ocean temperature, sea surface factors, and climatic factors as the main factors affecting the installation of set-nets.
FISHERIES RESEARCH
(2024)
Article
Fisheries
Josie L. Palmer, Carina Armstrong, Hasan D. Akbora, Damla Beton, Cigdem Caglar, Brendan J. Godley, Kristian Metcalfe, Meryem Ozkan, Robin T. E. Snape, Annette C. Broderick
Summary: Small-scale fisheries are vital for global food security and cultural heritage, but the lack of information hampers effective management and mitigation of ecological impacts. This study provides the first comprehensive overview of the small-scale fishery fleet in Northern Cyprus. The fleet operates mainly over the continental shelf, using static and demersal gear types, and catches a diverse range of species, some of which are threatened. The findings can be used to improve fisheries management and conservation measures.
FISHERIES RESEARCH
(2024)