Article
Fisheries
Andrew M. Scheld, Jennifer Beckensteiner, Daphne M. Munroe, Eric N. Powell, Sarah Borsetti, Eileen E. Hofmann, John M. Klinck
Summary: This study applied an existing integrated bioeconomic model to evaluate the potential economic effects of offshore wind development on the Atlantic surfclam fishery. By simulating fishing activity and economic outcomes under different offshore wind energy development scenarios, the study found that spatial restrictions and changes in fishing effort distribution would decrease revenues for fishing vessels and processors and increase fishing costs.
ICES JOURNAL OF MARINE SCIENCE
(2022)
Article
Environmental Sciences
Emilien Pousse, Daphne Munroe, Deborah Hart, Daniel Hennen, Louise P. Cameron, Jennie E. Rheuban, Zhaohui Aleck Wang, Gary H. Wikfors, Shannon L. Meseck
Summary: A dynamic energy budget model was used to study the effects of ocean acidification on Atlantic surfclam bioenergetics. The simulation results showed that future warming and acidification conditions would result in faster growth and increased energy allocation for reproduction in young surfclams, but a reduction in maximum shell length and energy allocated to reproduction was observed by the beginning of the 22nd century according to the RCP 8.5 scenario.
MARINE ENVIRONMENTAL RESEARCH
(2022)
Article
Oceanography
W. S. Brown, O. Schofield, S. Glenn, J. Kohut, W. Boicourt
Summary: During summer, a cold water mass called Cold Pool Water (CPW), formed by winter water, resides over the Mid Atlantic Bight. It strongly influences the ecosystem and fisheries, thus there is a need to understand the ocean processes and develop CPW forecast capability. High-resolution Slocum glider measurements and ocean gliders have provided valuable data on the variability and structure of CPW. The glider measurements also showed the impact of Gulf Stream on CPW properties.
CONTINENTAL SHELF RESEARCH
(2023)
Article
Oceanography
G. Gawarkiewicz, P. Fratantoni, F. Bahr, A. Ellertson
Summary: Shelfbreak exchange processes, particularly the Salinity Maximum Intrusion, have been extensively studied in the Middle Atlantic Bight. Recent data suggests that middepth intrusions are occurring more frequently and with greater salinity difference from ambient water compared to previous studies. The increase in frequency may be linked to a recent regime shift in the annual formation rate of Warm Core Rings by the Gulf Stream. Properly resolving this process in numerical simulations is necessary to account for salt budgets for the continental shelf and slope.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2022)
Article
Meteorology & Atmospheric Sciences
B. J. Gaudet, G. Garcia Medina, R. Krishnamurthy, W. J. Shaw, L. M. Sheridan, Z. Yang, R. K. Newsom, M. Pekour
Summary: In this study, simulations were performed using the WRF model to improve the agreement between simulated and observed hub-height wind speeds in the marine environment. The impact of wave coupling on the wind speeds at the buoy level was found to be modest and case dependent, but overall improvements were observed when using two-way wave coupling.
MONTHLY WEATHER REVIEW
(2022)
Article
Multidisciplinary Sciences
Alan Condron, Jenna C. Hill
Summary: High-resolution seafloor mapping reveals evidence of massive icebergs drifting south along the eastern United States, with sediment core analysis and numerical modeling providing insights into iceberg transport mechanisms and past climate changes.
NATURE COMMUNICATIONS
(2021)
Article
Oceanography
Xinyu Li, Yuan-Yuan Xu, David L. Kirchman, Wei-Jun Cai
Summary: This study developed and evaluated empirical multiple linear regression models for carbonate parameters using hydrographic data collected in the South Atlantic Bight and Mid-Atlantic Bight. The models showed good performance in capturing the regional differences and temporal consistency of the carbonate parameters. Composite models were also developed to enhance the model applicability. Furthermore, the models were applied to Biogeochemical-Argo data for carbonate parameter reconstruction, contributing to a better understanding of carbon cycle processes in coastal oceans.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2022)
Article
Oceanography
Jacob Forsyth, Glen Gawarkiewicz, Magdalena Andres
Summary: Warm Core Rings (WCRs) have significant impacts on the shelf flow and temperature. Rings with higher rotational velocities and closer to the shelf have greater influence, including reversing the direction of flow at the shelf break. The seasonal variability affects the temperature impact of rings on the shelf, with associated upwelling effects on the shelf flow.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2022)
Article
Oceanography
M. Andres, M. Muglia, H. Seim, J. Bane, D. Savidge
Summary: This article examines the impact of the Gulf Stream on the exchange of waters between the open ocean and the shelf, based on observations from instruments deployed in the South Atlantic Bight. The study finds that the position and transport of the Gulf Stream control the along-slope flow along the continental slope, and there is a wave-like meander influence on the shelf-edge currents in a specific frequency band.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2023)
Article
Ecology
Heiner Dietze, Ulrike Loeptien
Summary: This study aims to analyze the mechanisms of hypoxia in the Eckernförde Bight in the Baltic Sea, explore the potential of existing monitoring programs to predict hypoxia, and develop a workflow applicable to other regions facing similar challenges. The research utilizes a highly detailed ocean circulation model to examine the factors contributing to hypoxic events.
Article
Meteorology & Atmospheric Sciences
Casey R. Patrizio, Panos J. Athanasiadis, Claude Frankignoul, Doroteaciro Iovino, Simona Masina, Luca Famooss Paolini, Silvio Gualdi
Summary: The variability of the North Atlantic atmosphere-ocean system is assessed in low-resolution (LR) and high-resolution (HR) climate model simulations. The LR simulations overestimate the low-frequency variability of subpolar sea surface temperature (SST) anomalies and underestimate its correlation with the NAO compared to ERA5 data. These deficiencies are significantly reduced in the HR simulations, which show improvements related to a reduction of intrinsic variability in the subpolar ocean circulation. The mean state of the Labrador-Irminger Seas has been identified as a factor influencing the subpolar ocean variability in the LR simulations.
JOURNAL OF CLIMATE
(2023)
Article
Oceanography
Irina I. Rypina, Anthony Kirincich, Thomas Peacock
Summary: The study investigated the horizontal and vertical spreading of a neutrally-buoyant chemical tracer released into the surface mixed layer in the coastal ocean. The majority of the dye was observed within the mixed layer, with the downward penetration into the stratified part of the water column being a slow process taking multiple days. The lateral spread of dye was well represented by high-frequency radar velocities and small-scale turbulent diffusivity, indicating a complex exchange process between the mixed layer and pycnocline.
CONTINENTAL SHELF RESEARCH
(2021)
Article
Geosciences, Multidisciplinary
Frerk Poppelmeier, Aurich Jeltsch-Thommes, Joerg Lippold, Fortunat Joos, Thomas F. Stocker
Summary: According to a reassessment of proxy records and model simulations, the Atlantic meridional overturning circulation was shallow and weak during the Last Glacial Maximum, and it took time for water masses to adjust to circulation shifts during the Last Deglaciation. However, uncertainties still exist in understanding the Atlantic circulation and its response to external perturbations.
Article
Multidisciplinary Sciences
Nicola C. Thomas, Harold J. Bradbury, David A. Hodell
Summary: This study reconstructs the relative changes in oxygen concentration in the deep North Atlantic over the past 1.5 million years and finds a significant reduction in deep-water oxygenation during the glacial period around 960 thousand to 900 thousand years ago. This reduction coincides with increased continental ice volume and a major change in ocean thermohaline circulation.
Article
Geosciences, Multidisciplinary
B. D. Dushaw, D. Menemenlis
Summary: An unconstrained global ocean simulation in 2020 confirms previous observations of diurnal internal tides by acoustic tomography in the Western North Atlantic. The simulation accurately reproduces the characteristics of K1 and O1 internal-tide standing waves, but shows deviations from observations in terms of barotropic and internal tides. The tomographic data provide a benchmark for improving the representation of tides, internal tides, and dissipation in models.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Environmental Sciences
Emilien Pousse, Daphne Munroe, Deborah Hart, Daniel Hennen, Louise P. Cameron, Jennie E. Rheuban, Zhaohui Aleck Wang, Gary H. Wikfors, Shannon L. Meseck
Summary: A dynamic energy budget model was used to study the effects of ocean acidification on Atlantic surfclam bioenergetics. The simulation results showed that future warming and acidification conditions would result in faster growth and increased energy allocation for reproduction in young surfclams, but a reduction in maximum shell length and energy allocated to reproduction was observed by the beginning of the 22nd century according to the RCP 8.5 scenario.
MARINE ENVIRONMENTAL RESEARCH
(2022)
Article
Fisheries
Andrew M. Scheld, Jennifer Beckensteiner, Daphne M. Munroe, Eric N. Powell, Sarah Borsetti, Eileen E. Hofmann, John M. Klinck
Summary: This study applied an existing integrated bioeconomic model to evaluate the potential economic effects of offshore wind development on the Atlantic surfclam fishery. By simulating fishing activity and economic outcomes under different offshore wind energy development scenarios, the study found that spatial restrictions and changes in fishing effort distribution would decrease revenues for fishing vessels and processors and increase fishing costs.
ICES JOURNAL OF MARINE SCIENCE
(2022)
Article
Fisheries
Michael P. Acquafredda, Nathan Morris, Lisa Calvo, Michael De Luca, Daphne Munroe
Summary: The Atlantic surfclam is a promising candidate for species diversification in the US Northeast. However, gaps in the literature have left aquaculture practitioners without a complete understanding of how to best cultivate this species. Controlled experiments were conducted to evaluate the efficacy of different gear types and conditions, and results showed that multiple methods can effectively produce commercial-scale quantities of surfclams.
AQUACULTURE REPORTS
(2022)
Article
Fisheries
Daphne Munroe, Jason Morson, Sarah Borsetti, Daniel Hennen
Summary: Atlantic surfclams and ocean quahogs are large-bodied clams that dominate the biomass on the Mid-Atlantic continental shelf. However, their numerical abundance is not dominant in the benthic community and they tend to be patchily distributed. Estimating overall abundance and biomass is challenging due to the unique characteristics of individual clams and their distribution habits. Proper sampling and survey strategies are crucial to prevent undersampling and bias. Moreover, consistent sample collection methods are essential to compare data across multiple surveys, improving regional assessments of population status and changes. This paper provides recommendations to enhance the quality of surveys and facilitate direct comparison of data among different surveys and teams.
FISHERIES RESEARCH
(2023)
Article
Ecology
Joseph C. Caracappa, Daphne M. Munroe, Heidi L. Fuchs, Robert J. Chant
Summary: Blue crabs (Callinectes sapidus) in the US mid-Atlantic Bight have unpredictable and variable recruitment, so understanding their larval development and dispersal is important. This study used a simulation model to investigate the effects of swimming behavior, current systems, and mixing on larval transport. Results showed that larval transport is mainly influenced by wind speed, but behavioral traits also play a significant role. Swimming larvae can maintain a near-surface position and have more control over their vertical distribution compared to passive particles. These findings highlight the importance of larval swimming ability and behavioral variability in blue crab larval dispersal.
ECOLOGICAL MODELLING
(2023)
Article
Fisheries
Emily C. Manuel, Matthew P. Hare, Daphne Munroe
Summary: Estuaries provide important habitat for eastern oysters, with varying salinity conditions affecting oyster growth. Experiment 1 found that transplantation to higher salinity led to increased growth, while oyster spat from the lowest salinity had the highest overall growth. Shell morphology did not affect growth. Experiment 2 showed that higher initial salinity and lower final salinity led to increased growth, highlighting the importance of early postsettlement salinity stress on oyster growth. These findings have significant implications for understanding oyster stock resilience in the face of climate change.
JOURNAL OF SHELLFISH RESEARCH
(2023)
Article
Fisheries
Stephanie Stromp, Andrew M. Scheld, John M. Klinck, Daphne M. Munroe, Eric N. Powell, Roger Mann, Sarah Borsetti, Eileen E. Hofmann
Summary: Rising water temperatures have caused the Atlantic surfclam to shift its range to areas where ocean quahogs are already present, resulting in restrictions on fishing activities and potential economic disruption. Wind energy development further limits the fishery, and simulations demonstrate the consequences of species overlap and fishing constraints. The study highlights the challenges faced by the Atlantic surfclam fishery as climate change and ocean management evolve.
MARINE AND COASTAL FISHERIES
(2023)
Article
Fisheries
Sarah Borsetti, Daphne M. Munroe, Andrew M. Scheld, Eric N. Powell, John M. Klinck, Eileen E. Hofmann
Summary: The Atlantic surfclam fishery in the U.S. Northeast continental shelf is highly vulnerable to the impacts of offshore wind energy development due to overlapping fishing grounds and wind energy lease areas. The installation of wind energy turbines and cables can restrict or eliminate federal assessment surveys, leading to changes in stock assessments and increased uncertainty in setting fishing quotas. A modeling framework was used to assess the impact of excluding the surveys from wind energy lease areas, which resulted in lower spawning stock biomass estimates and increased fishing mortality.
MARINE AND COASTAL FISHERIES
(2023)
