A high-resolution physical–biogeochemical model for marine resource applications in the northwest Atlantic (MOM6-COBALT-NWA12 v1.0)

Geoscientific model development, Journal Year: 2023, Volume and Issue: 16(23), P. 6943 - 6985

Published: Nov. 29, 2023

Abstract. We present the development and evaluation of MOM6-COBALT-NWA12 version 1.0, a 1/12∘ model ocean dynamics biogeochemistry in northwest Atlantic Ocean. This is built using new regional capabilities MOM6 coupled with Carbon, Ocean Biogeochemistry Lower Trophics (COBALT) biogeochemical Sea Ice Simulator version-2 (SIS2) sea ice model. Our goal was to develop provide information support living-marine-resource applications across management time horizons from seasons decades. To do this, we struck balance between broad, coastwide domain simulate basin-scale variability capture cross-boundary issues expected under climate change; high enough spatial resolution accurately features like Gulf Stream separation advection water masses through finer-scale coastal features; computational economy required run long simulations multiple ensemble members that are needed quantify prediction uncertainties produce actionable information. assess whether capable supporting intended by evaluating three categories metrics: basin-wide indicators model's performance, ecosystem drive it, times efficiency. Overall, both ecosystem-relevant simulated well Where notable biases errors types indicator, they mainly consistent challenges simulating separation, path, variability: for example, shelf north Cape Hatteras too warm salty have minor biases. During development, identified few parameters exerted influence on solution, including horizontal viscosity, mixed-layer restratification, tidal self-attraction loading, which discuss briefly. The performance adequate running numerous simulations, even inclusion 40 additional tracers. these results show this first efficiently historical mean conditions variability, laying groundwork future studies analyze detail, improve parameterizations components better local features, predictions projections timescales.

Language: Английский

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Ocean acidification alters the acute stress response of a marine fish

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 858, P. 159804 - 159804

Published: Oct. 28, 2022

Language: Английский

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Forage Fish Species Prefer Habitat within Designated Offshore Wind Energy Areas in the U.S. Northeast Shelf Ecosystem

Marine and Coastal Fisheries, Journal Year: 2023, Volume and Issue: 15(2)

Published: March 27, 2023

Abstract As the world develops sources of renewable energy, there is an intensifying interest in offshore wind energy production. The Northeast U.S. Continental Shelf (NES) ecosystem has favorable dynamics, with active development energy. In this study, we present species distribution models that consider both occupancy and biomass responses for a broad spectrum fish macroinvertebrate taxa ( n = 177). Building upon prior analyses, habitat was differentiated into overall core habitats based on statistical distributions scores. Overall used to show each species' regional fishery‐independent survey captures between 1976 2019, whereas represented where focus abundance located as subset habitat. Wind developments may modify water column ways impact lower‐trophic‐level productivity; therefore, added attention given response forage species. Over 20% showed preferential use putative potential areas, including disproportionate number taxa. Principal usage varied by season, like Atlantic Menhaden Brevoortia tyrannus Mackerel Scomber scombrus preferentially using lease areas spring Round Herring Etrumeus teres longfin inshore squid Doryteuthis pealeii autumn. For relatively low tendency related be lower than habitat; contrast, high higher area tended have positive trends across species, these being disproportionately among These results frame importance NES, particularly fulfill many important ecological functions.

Language: Английский

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Larval and juvenile fish assemblages in the Hudson Bay system

Polar Biology, Journal Year: 2025, Volume and Issue: 48(2)

Published: March 26, 2025

Language: Английский

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Response of CRH system in brain and gill of marine medaka to seawater acidification

Fish Physiology and Biochemistry, Journal Year: 2024, Volume and Issue: 50(3), P. 1225 - 1236

Published: March 21, 2024

Language: Английский

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The combined effects of ocean warming and ocean acidification on Pacific cod (Gadus macrocephalus) early life stages

Marine Biology, Journal Year: 2024, Volume and Issue: 171(6)

Published: April 28, 2024

Abstract The eastern North Pacific is simultaneously experiencing ocean warming (OW) and acidification (OA), which may negatively affect fish early life stages. cod ( Gadus macrocephalus ) an economically ecologically important species with demonstrated sensitivity to OW OA, but their combined impacts are unknown. Through a ~ 9-week experiment, embryos larvae were reared at one of six combinations three temperatures (3, 6, 10 °C) two CO 2 levels (ambient: 360 μatm; high: 1560 μatm) in factorial design. Both embryonic larval mortality highest the warmest temperature. Embryonic daily rates lower under elevated there was no effect level on rates. Growth young (0 11 days post-hatch) faster warmer high levels, growth during 11–28 post-hatch interval increased by temperature alone. condition decreased age, less markedly levels. However, 6 °C, incubated ambient remained higher than treatment throughout experiment. Overall, had greater influence stages across each measurement endpoint, while effects more modest inconsistent. Subtle developmental differences could be magnified later context recruitment. These results show complexity stage- trait-specific responses value investigating co-occurring climatic stressors.

Language: Английский

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Threat assessment for Pacific sand lance (Ammodytes personatus) in the Salish Sea

Frontiers in Marine Science, Journal Year: 2024, Volume and Issue: 11

Published: Oct. 30, 2024

Like many forage fish species, Pacific sand lance ( Ammodytes personatus ) play a key role in nearshore marine ecosystems as an important prey source for diverse array of predators the northeastern Pacific. However, primary threats to and their habitat are poorly defined due lack systematic data. Crucial information needed assess population status is also lacking including basic knowledge local regional abundance distribution. Sand currently listed ‘not evaluated’ under IUCN red list they have not been assessed by US Canadian agencies. This hampers management policy efforts focused on conservation. To address this gap, we conducted three-part, structured expert elicitation vulnerability Salish Sea populations. Experts were asked rank and/or habitat, further quantify identified using matrix, predict trajectory 25 years from today. Impacts associated with climate change (e.g. sea level rise, temperature ocean acidification, extreme weather) consistently ranked high concern ranking exercise quantified scores. Nearly every predicted will declined current levels years. These results suggest face numerous may be decline conditions. research provides vital about which pose greatest risk long-term health populations habitat. Managers can use prioritize address. Future reliably size, better understand roles natural anthropogenic impacts, identify most cost-effective actions mitigate multiple threats, recommended.

Language: Английский

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Larval transport pathways from three prominent sand lance habitats in the Gulf of Maine

Fisheries Oceanography, Journal Year: 2022, Volume and Issue: 31(3), P. 333 - 352

Published: March 15, 2022

Abstract Northern sand lance ( Ammodytes dubius ) are among the most critically important forage fish throughout Northeast US shelf. Despite their ecological importance, little is known about larval transport of this species. Here, we use otolith microstructure analysis to estimate hatch and settlement dates then these measurements parametrize particle tracking experiments assess source–sink dynamics three prominent habitats in Gulf Maine: Stellwagen Bank, Great South Channel, Georges Bank. Our results indicate pelagic duration northern lasts 2 months (range: 50–84 days) exhibit a broad range dates. Forward backward show substantial interannual variability, yet suggest generally follows north south circulation Maine region. We find that Bank major source larvae for while Channel primarily serves as sink from Retention likely primary on within both varies interannually response changes local wind events, only exhibited notable retention single year. Collectively, provide framework population connectivity habitats, which informs species' recruitment impacts its vulnerability exploitation.

Language: Английский

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A high-resolution physical-biogeochemical model for marine resource applications in the Northwest Atlantic (MOM6-COBALT-NWA12 v1.0)

Published: Aug. 9, 2023

Abstract. We present the development and evaluation of MOM6-COBALT-NWA12 version 1.0, a 1/12° model ocean dynamics biogeochemistry in Northwest Atlantic Ocean. This is built using new regional capabilities MOM6 coupled with COBALT biogeochemical SIS2 sea ice model. Our goal was to develop provide information support living marine resource applications across management time horizons from seasons decades. To do this, we struck balance between broad, coastwide domain simulate basin-scale variability capture cross-boundary issues expected under climate change, high enough spatial resolution accurately features like Gulf Stream separation advection water masses through finer-scale coastal features, computational economy required run long simulations multiple ensemble members that are needed quantify prediction uncertainties produce actionable information. assess whether capable supporting intended by evaluating three categories metrics: basin-wide indicators model's performance, ecosystem drive it, times efficiency. Overall, both ecosystem-relevant simulated well Where notable biases errors types indicators, they mainly consistent challenges simulating separation, path, variability: for example, shelf north Cape Hatteras too warm salty has minor biases. During development, identified few parameters exerted influence on solution, including horizontal viscosity, mixed layer restratification, tidal self-attraction loading, which discuss briefly. The performance adequate running numerous simulations, even inclusion 40 additional tracers. these results show this first Ocean efficiently historical mean conditions variability, laying groundwork future studies analyze detail, improve parameterizations components better local predictions projections scales.

Language: Английский

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Two distinct population clusters of northern sand lance (Ammodytes dubius) on the northwest Atlantic shelf revealed by whole genome sequencing

ICES Journal of Marine Science, Journal Year: 2022, Volume and Issue: 80(1), P. 122 - 132

Published: Dec. 5, 2022

Abstract Northern sand lance (Ammodytes dubius) are essential forage fish in most offshore, temperate-to-polar waters on the Northwest Atlantic shelf (NWA), but their population structure and genetic separation from American (A. americanus) remain unresolved. We assembled a reference genome for A. dubius (first Ammodytidae) then used low-coverage whole sequencing 262 specimens collected across species distribution (Mid-Atlantic Bight to Greenland) quantify differentiation between geographic regions based single nucleotide polymorphisms. found strong locations north south of Scotian Shelf, largely due massive spanning chromosomes 21 24. Genetic distance increased with smaller southern cluster not larger northern cluster, where homogeneity appeared large distances (>103 km). The two clusters coincide clear break winter sea surface temperature, suggesting that differential offspring survival, rather than limited transport, causes realized connectivity. Nuclear mitochondrial DNA both clearly delineated americanus, thereby confirming boundary through spatial niche partitioning into inshore offshore NWA.

Language: Английский

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