Dongmei Lian , Xin Liu , Edward A. Laws , Tongtong Liu , Jingxiao Wang , Shaoling Shang , Zhongping Lee
{"title":"A “trapezoidal” relationship between solar radiation and chlorophyll concentrations at the center of the South Pacific Gyre","authors":"Dongmei Lian , Xin Liu , Edward A. Laws , Tongtong Liu , Jingxiao Wang , Shaoling Shang , Zhongping Lee","doi":"10.1016/j.pocean.2024.103281","DOIUrl":"10.1016/j.pocean.2024.103281","url":null,"abstract":"<div><p>Understanding the driving mechanism of phytoplankton dynamics is key to forecasting future changes in the ocean. Here, we report an apparent “trapezoidal” relationship between chlorophyll concentrations (Chl) and surface photosynthetically available radiation (PAR(0)) at the center of the South Pacific Gyre (cSPG) based on 18 years of MODIS Aqua measurements. A comparison of Chl with a photoacclimation model revealed that photoacclimation alone could not explain the temporal dynamics of Chl. Instead, the Chl dynamics were explained by a combination of photoacclimation, nutrient limitation, and the grazing pressure of zooplankton at different times throughout the year. An annual “trapezoidal” spiral relationship between Chl and PAR(0) suggested that the steady state of phytoplankton populations at the cSPG could be influenced by the alternation of co-regulation mechanisms during a year. Because this same pattern occurs in other subtropical gyres, this understanding of the underlying mechanisms not only facilitates simulating and forecasting phytoplankton dynamics but also provides a new perspective on how multiple stressors may impact phytoplankton communities in a warmer climate.</p></div>","PeriodicalId":20620,"journal":{"name":"Progress in Oceanography","volume":"225 ","pages":"Article 103281"},"PeriodicalIF":4.1,"publicationDate":"2024-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141024867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Cracking the dynamic code of the deep: Unexpected seasonal patterns of active protistan-bacterial microbiomes in the mesopelagic zone of the South China Sea","authors":"Ping Sun , Ying Wang , Xin Huang , SuSu Xu , Ramiro Logares , Yibin Huang , Dapeng Xu , Bangqin Huang","doi":"10.1016/j.pocean.2024.103280","DOIUrl":"https://doi.org/10.1016/j.pocean.2024.103280","url":null,"abstract":"<div><p>Disentangling microbial dynamics in the mesopelagic zone is crucial due to its role in processing sinking photic production, affecting carbon export to the deep ocean. The relative importance of photic zone processes versus local biogeochemical conditions in mesopelagic microbial dynamics, especially seasonal dynamics, is largely unknown. We employed rRNA gene transcript-based high-throughput sequencing on 189 samples collected from both the photic and mesopelagic zones, along with seasonal observations, to understand the South China Sea’s protistan-bacterial microbiota diversity, drivers, and mechanisms. Mesopelagic communities displayed unexpectedly greater seasonal but less vertical dynamics than photic counterparts. Temperature, dissolved oxygen, nutrients, and bacterial abundance drove mesopelagic communities vertically. Photic zone processes (using net community production and mixed layer depth as proxies) of past seasons, coinciding with strong monsoon periods, shaped seasonal fluctuations in mesopelagic communities, indicating a time-lag effect. Furthermore, certain microbes were identified as indicators for beta diversity by depth and season. This investigation deepens our understanding of how and why mesopelagic communities vary with season and depth. Recognizing the time-lagged effect of photic zone processes on mesopelagic communities is crucial for understanding the current and future configurations of the ocean microbiome, especially in the context of climate change and its effect on carbon export and ocean storage.</p></div>","PeriodicalId":20620,"journal":{"name":"Progress in Oceanography","volume":"225 ","pages":"Article 103280"},"PeriodicalIF":4.1,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141067524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Giancarlo M. Correa , Thomas P. Hurst , William T. Stockhausen , Lorenzo Ciannelli , Trond Kristiansen , Darren J. Pilcher
{"title":"Modeling the larval growth and survival of Pacific cod (Gadus macrocephalus) in the eastern Bering Sea","authors":"Giancarlo M. Correa , Thomas P. Hurst , William T. Stockhausen , Lorenzo Ciannelli , Trond Kristiansen , Darren J. Pilcher","doi":"10.1016/j.pocean.2024.103282","DOIUrl":"https://doi.org/10.1016/j.pocean.2024.103282","url":null,"abstract":"<div><p>The eastern Bering Sea (EBS) is a highly productive ecosystem that supports several important commercial species such as the Pacific cod (<em>Gadus macrocephalus</em>). Climate variability affects the population dynamics of this stock throughout its life stages, especially early life stages, since they are particularly susceptible to environmental changes. In recent decades, warm and cold stanzas (i.e., 3–5 year periods) have been observed in the EBS, and there is evidence that they can modulate the recruitment of this stock, causing important socioeconomic impacts. Using a mechanistic individual-based model, this study investigates the spatial and temporal variability of growth and survival of Pacific cod's early life stages during 2000–2020. We examined changes by year and over space and compared our results with published literature to validate our model. We found that temperature played a key role in modulating the survival of fish larvae, observing an increase in starvation events in warmer years or locations. Periods or areas with low prey density, especially small-bodied copepods, also contributed to increased starvation. The average temperature in the fish habitat was negatively correlated with recruitment estimates from the stock assessment model. Growth was primarily temperature-driven; however, food-limited growth became more frequent when larvae were smaller during cold years. Spatially, we found that the environmental conditions in the southeastern Bering Sea may favor larval survival but reduce growth, and higher mortality may be persistent on the middle and outer shelf. Our model produces results that agree with previous field studies, and it offers a valuable tool to investigate other ecological questions on the impact of the environment on early life stages of fishes.</p></div>","PeriodicalId":20620,"journal":{"name":"Progress in Oceanography","volume":"225 ","pages":"Article 103282"},"PeriodicalIF":4.1,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140950939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S.L. Basedow , A.H.H. Renner , B. Espinasse , S. Falk-Petersen , M. Graeve , K. Bandara , K. Sørensen , K. Eiane , W. Hagen
{"title":"The impact of advection on a Subarctic fjord food web dominated by the copepod Calanus finmarchicus","authors":"S.L. Basedow , A.H.H. Renner , B. Espinasse , S. Falk-Petersen , M. Graeve , K. Bandara , K. Sørensen , K. Eiane , W. Hagen","doi":"10.1016/j.pocean.2024.103268","DOIUrl":"https://doi.org/10.1016/j.pocean.2024.103268","url":null,"abstract":"<div><p>Fjord and shelf food webs are frequently supplemented by the advection of external biomass, which in high-latitude seas often comes in the form of lipid-rich copepods that can support a wide range of fish species, including Northeast Arctic cod (<em>Gadus morhua</em>). A seasonal match or mismatch at the lower trophic levels (phytoplankton and zooplankton) is central in determining how much energy and biomass is available for higher trophic levels (fish). Here, we quantify the inflow of the copepod <em>Calanus finmarchicus</em> into the Vestfjorden fjord system using high-resolution measurements of ocean currents and zooplankton (laser optical plankton counter). We evaluate a spatio-temporal match/mismatch between the phytoplankton bloom and <em>Calanus</em> and assess the input of advected copeods at the lower trophic level fjord and shelf food web based on an integrative approach employing stable isotope analyses (C, N), fatty acid trophic marker analyses, and biovolume spectrum analyses. Our results suggest two different sources of the <em>Calanus</em> population in the fjord/shelf system: one fraction overwintered locally and started ascending early to feed on the phytoplankton bloom that peaked around April 11. The other fraction had only recently (end of April) been and still was being advected from the oceanic overwintering habitats. Ca. 119 g C/s of <em>Calanus</em> were advected into the fjord, comparable to the biomass of <em>Calanus</em> advected into an Arctic fjord, and the mesozooplankton community was dominated by the copepod. The fjord food web was tightly coupled between the phytoplankton spring bloom, the local part of the <em>Calanus</em> population (trophic level 1.8–2.4) and cod larvae (high levels of wax esters). On the shelf, our results suggest that the impact of advected <em>Calanus</em> in the food web is at its starting point (low trophic level, large difference of δ<sup>13</sup>C of POM and <em>Calanus</em>). We highlight important factors that can contribute to the successful spawning of Northeast Arctic cod: an extended phytoplankton bloom that can support both locally and advected <em>Calanus</em>, which in turn can supply the essential nauplii prey for first-feeding cod larvae.</p></div>","PeriodicalId":20620,"journal":{"name":"Progress in Oceanography","volume":"224 ","pages":"Article 103268"},"PeriodicalIF":4.1,"publicationDate":"2024-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0079661124000740/pdfft?md5=a6c67e5daf1a9e6b42edd38a56fd5909&pid=1-s2.0-S0079661124000740-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140893512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
T. Haug , M. Biuw , K.M. Kovacs , L. Lindblom , U. Lindstrøm , C. Lydersen , K.M. MacKenzie , S. Meier
{"title":"Trophic interactions between common minke whales (Balaenoptera acutorostrata) and their prey during summer in the northern Barents Sea","authors":"T. Haug , M. Biuw , K.M. Kovacs , L. Lindblom , U. Lindstrøm , C. Lydersen , K.M. MacKenzie , S. Meier","doi":"10.1016/j.pocean.2024.103267","DOIUrl":"https://doi.org/10.1016/j.pocean.2024.103267","url":null,"abstract":"<div><p>Global warming is causing rapid change in marine food webs, particularly at northern latitudes where temperatures are increasing most rapidly. In this study, the diet of common minke whales <em>Balaenoptera acutorostrata</em> was assessed both in terms of short-term (morphological analyses of digestive tract contents) and longer-term (tissue chemical markers: fatty acids and stable isotopes) prey use in the northern Barents Sea to see if they are prey shifting. Samples (blubber cores, muscle, and stomach contents) were obtained from 158 common minke whales taken during Norwegian commercial whaling operations during summer over the period 2016–2020. Two prey items, capelin <em>Mallotus villosus</em> and krill (primarily <em>Thysanoessa</em> sp.), dominated the stomach contents in the entire period of investigation, which included sampling both in June and in August, similar to findings from earlier studies. A few gadoids were also observed in the whale stomachs. Lower blubber fatty acid (FA) contents in 2016/2017 as compared with 2018/2019 were observed. This is most likely explained by differences in sampling time (June in 2016/2017 vs August in 2018/2019, i.e., after a longer feeding period during the summer in the latter case). This explanation also fits with the fact that FA profiles of the 2018/2019 whales were more similar to the FA profiles of the potential prey, presumably reflecting the two months longer assimilation time for these whales. Multidimensional mixing models based on carbon and nitrogen isotope composition of the most likely prey groups suggested that the whales ate mostly krill in four of the five sampling years. In 2018 there were indications of a higher proportion of gadoid fish, showing some dietary flexibility. The trophic level of the whales’ feeding, as interpreted from the nitrogen isotope values, was positively correlated with blubber thickness suggesting that fish-eaters tended to assimilate more energy than whales that focused more exclusively on lower trophic prey. The variation suggested by different dietary analyses methods − stomach contents, fatty acids, and stable isotopes – most likely reflects different turnover times, with muscle stable isotopes likely representing several months of dietary integration, while lipid stores are more dynamic and may represent weeks, and stomach contents represent feeding events during the last few hours. The change in diet of minke whales from small pelagic fishes (in the past) to a greater quantity of krill and demersal fish (seen in this study) suggests that the whales are responding to the ongoing borealization of the Barents Sea ecosystem.</p></div>","PeriodicalId":20620,"journal":{"name":"Progress in Oceanography","volume":"224 ","pages":"Article 103267"},"PeriodicalIF":4.1,"publicationDate":"2024-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140879298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Oceanographic factors determining the distribution of nutrients and primary production in the subpolar Southern Ocean","authors":"Manami Tozawa , Daiki Nomura , Kaihe Yamazaki , Masaaki Kiuchi , Daisuke Hirano , Shigeru Aoki , Hiroko Sasaki , Hiroto Murase","doi":"10.1016/j.pocean.2024.103266","DOIUrl":"https://doi.org/10.1016/j.pocean.2024.103266","url":null,"abstract":"<div><p>To investigate the spatial distributions and determinants of nutrient concentrations, we measured NO<sub>3</sub><sup>−</sup>+NO<sub>2</sub><sup>−</sup>, PO<sub>4</sub><sup>3−</sup>, and Si(OH)<sub>4</sub> concentrations in the eastern Indian Ocean sector of the Antarctic Ocean (80 − 150°E, south of 60°S) between December 2018 and February 2019. In the region influenced by the Antarctic Circumpolar Current, nutrient concentrations were increased by nutrients supplied from the deep layer and by organic matter decomposition and remineralization within the seasonal pycnocline after the development of strong stratification. Strong stratification also enhanced phytoplankton growth and nutrient consumption by photosynthesis. In contrast, in the subpolar region, nutrient concentrations were increased by nutrients supplied by brine discharged during sea ice formation and decreased by dilution with sea ice meltwater. Although high salinity in the surface and subsurface layers corresponded well to upwelling areas around subpolar subgyres, high salinity was not necessarily correlated with nutrient concentrations. We estimated primary production both from in situ nutrient data and from satellite-acquired chlorophyll-<em>a</em> data. According to both estimation methods, primary production was high in the subpolar region, especially around 120 − 130°E. However, nutrient-based estimation also showed high production in coastal areas where, because of sea ice and cloud cover, estimation based on satellite data was not possible. To understand primary production in seasonal ice areas, the best estimation method should be selected for the research goals or multiple methods should be used in combination.</p></div>","PeriodicalId":20620,"journal":{"name":"Progress in Oceanography","volume":"225 ","pages":"Article 103266"},"PeriodicalIF":4.1,"publicationDate":"2024-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0079661124000727/pdfft?md5=f32c170ccf691df557b9c7b2a90109e7&pid=1-s2.0-S0079661124000727-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140905647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Modeling the larval dispersal and connectivity of Red Snapper (Lutjanus campechanus) in the Northern Gulf of Mexico","authors":"Xing Zhou , Luisa Lopera , Adela Roa-Varón , Annalisa Bracco","doi":"10.1016/j.pocean.2024.103265","DOIUrl":"https://doi.org/10.1016/j.pocean.2024.103265","url":null,"abstract":"<div><p>Advancements in computing power and improved biophysical dispersal models, have enhanced our ability to realistically simulate distributions and behaviors of fish larvae. In this study, a 1 km high-resolution ocean model capable of capturing the ocean's mesoscale and sub-mesoscale motions is integrated with a biophysical dispersal model that considers a range of larval behaviors. Together they are used to investigate the dispersal and connectivity of Red Snapper (<em>Lutjanus campechanus</em>) larvae, a key species for both commercial and recreational fisheries in the northern Gulf of Mexico (GOM). We quantify how various larval behaviors influence the spatiotemporal dispersal, connectivity and settling of Red Snapper larvae focusing on egg buoyancy, larvae swimming capability, and ontogenetic vertical migration. Alongside habitat preferences, the ocean advection of Red Snapper larvae is crucial in shaping their dispersal patterns. Moreover, our simulations suggest different settling and connectivity characteristics between the eastern and western GOM. These results, indicate the need to divide these regions into distinct entities for stock management, rather than treating them as a unified stock as conventionally done.</p></div>","PeriodicalId":20620,"journal":{"name":"Progress in Oceanography","volume":"224 ","pages":"Article 103265"},"PeriodicalIF":4.1,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140644672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mengli Zhang , Chunling Zhang , Kefeng Mao , Xing Liu , Zhizu Wang
{"title":"Experimental construction of eddy real-time structure based on gradient-dependent OI in the Kuroshio-Oyashio confluence region","authors":"Mengli Zhang , Chunling Zhang , Kefeng Mao , Xing Liu , Zhizu Wang","doi":"10.1016/j.pocean.2024.103262","DOIUrl":"https://doi.org/10.1016/j.pocean.2024.103262","url":null,"abstract":"<div><p>The internal structures of mesoscale eddies are variable due to different generation mechanism, spatiotemporal scale, and movement characteristics. Based on the principle of data assimilation, this study provided a new approach for constructing the eddy real-time internal structure using the gradient-dependent optimal interpolation (OI) method. Three eddy cases with different types and locations were selected to validate the construction results. The reliability of construction was evaluated by satellite observation, in-situ comparisons, and contrast with the numerical output. The results showed that the real-time geostrophic current characters were basically consistent with the surface and deep current (observed by satellite and acoustic doppler current profiler, ADCP). The density features exhibited by constructed results (eddy centers, mean radii, and variation tendency) were similar to the expendable conductivity-temperature-depth (XCTD) survey data and numerical output. Compared to the composite structure, the real-time structures represented more small or mesoscale fluctuations. During eddy cases evolution, the mean radii at the same depth first increased and then decreased. The horizontal scale, influence depth, and internal stability of an anticyclonic eddy with low-latitude were more powerful than the other two eddy cases owing to the domination of warm water in the Kuroshio extension region. The results indicated that the gradient-dependent OI was a hopeful technique for representing the real-time internal features during eddy evolution.</p></div>","PeriodicalId":20620,"journal":{"name":"Progress in Oceanography","volume":"224 ","pages":"Article 103262"},"PeriodicalIF":4.1,"publicationDate":"2024-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140555433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pedro W.M. Souza-Neto , Ilson C.A. da Silveira , Cesar B. Rocha , Cauê Z. Lazaneo , Paulo H.R. Calil
{"title":"The Rio Grande Rise circulation: Dynamics of an internal tide conversion hotspot in the Southwestern Atlantic","authors":"Pedro W.M. Souza-Neto , Ilson C.A. da Silveira , Cesar B. Rocha , Cauê Z. Lazaneo , Paulo H.R. Calil","doi":"10.1016/j.pocean.2024.103264","DOIUrl":"https://doi.org/10.1016/j.pocean.2024.103264","url":null,"abstract":"<div><p>The Rio Grande Rise (RGR) is a plateau located at 31°S in the Southwestern Atlantic, rising from 5916<!--> <!-->m up to 161<!--> <!-->m below the sea level. The RGR is an important site for future mining of Fe-Mn crusts and can lead to an expansion of Brazil’s Exclusive Economic Zone. The Cruzeiro do Sul Rift (CSR) fault cuts through the RGR from southeast to northwest. In this study we characterize the RGR circulation, showing that M2 tides are the main source of variability in the region, with an amplitude that can reach 0.3<!--> <!-->m<!--> <!-->s<sup>−1</sup>, larger than the mean flow. These M2 tides are dominated by the baroclinic component and intensified near the bottom. The generation of M2 internal tides occurs mainly in the CSR slopes, with most energy converted from the barotropic tide being radiated away in the form of tidal beams. In addition, the impingement of the mean southern South Equatorial Current and tidal rectification generates anticyclonic circulations around the RGR peaks, with the latter mechanism being responsible for a bottom intensified anticyclonic circulation of 0.2<!--> <!-->m<!--> <!-->s<sup>−1</sup>. Finally, our results reveal that the RGR is a hotspot of internal tide generation in the Southwestern Atlantic.</p></div>","PeriodicalId":20620,"journal":{"name":"Progress in Oceanography","volume":"224 ","pages":"Article 103264"},"PeriodicalIF":4.1,"publicationDate":"2024-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140622200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Changsheng Chen, Liuzhi Zhao, Huichan Lin, Pingguo He, Siqi Li, Zhongxiang Wu, Jianhua Qi, Qichun Xu, Kevin Stokesbury, Lu Wang
{"title":"Potential impacts of offshore wind energy development on physical processes and scallop larval dispersal over the US Northeast shelf","authors":"Changsheng Chen, Liuzhi Zhao, Huichan Lin, Pingguo He, Siqi Li, Zhongxiang Wu, Jianhua Qi, Qichun Xu, Kevin Stokesbury, Lu Wang","doi":"10.1016/j.pocean.2024.103263","DOIUrl":"10.1016/j.pocean.2024.103263","url":null,"abstract":"<div><p>This study examines the potential impact of offshore wind energy facilities on the local and regional circulation, stratification, and scallop larval dispersal and settlement over the U.S. Northeast continental shelf. A coupled high-resolution (up to ∼ 1.0 m), wind turbine-resolving hydrodynamical (NS-FVCOM) and scallop individual-based (Scallop-IBM) model was employed. Comparisons were made for scenarios with and without wind turbine generators (WTGs), encompassing three-dimensional flow fields, water temperature, bottom stress/vertical mixing, scallop larval dispersal, settlement, and distributions. The interaction of M<sub>2</sub> tidal currents with monopiles generates significant horizontal flow shear on the downflow lee side. The fluid–structure interaction-induced mesoscale currents deviate substantially from the idealized flow fields examined typically in the device-scale laboratory or coarse-grid hydrodynamical models with subgrid-scale explicit parametrizations. Stratification induces noteworthy changes in the flow around individual monopiles throughout the water column, with the maximum bottom stress primarily oriented in the onshore-offshore direction and vertical eddy viscosity occurring around all directions of individual monopiles. The deployment of a WTG array amplifies offshore low-frequency subtidal flow around 40 to 50-m isobaths, forming mesoscale eddies over the shelf. This enhanced flow contributes to offshore water transport, redirecting scallop larvae toward the Nantucket Lightship Closed Area (NLCA). The accumulation of larvae in the NLCA is attributed to eddy-induced retention.</p></div>","PeriodicalId":20620,"journal":{"name":"Progress in Oceanography","volume":"224 ","pages":"Article 103263"},"PeriodicalIF":4.1,"publicationDate":"2024-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140604288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}