Progress in Oceanography最新文献

{"title":"Upper-ocean dynamics and nutrient coupling control the contribution of deep chlorophyll maxima to phytoplankton productivity in the Indian Sector of the Southern ocean","authors":"Sunil Kumar Padhi,&nbsp;Sarat Chandra Tripathy,&nbsp;Sudarsana Rao Pandi","doi":"10.1016/j.pocean.2026.103787","DOIUrl":"10.1016/j.pocean.2026.103787","url":null,"abstract":"<div><div>The deep chlorophyll maximum (DCM) significantly influences water-column integrated phytoplankton production (IPP) and carbon export in the Indian Sector of the Southern Ocean (ISSO). The characteristics of DCMs exhibit strong regional variability, influenced by the interplay among physical dynamics, nutrient inputs, and biological interactions. Using combined <em>in situ</em> and satellite observations, this study investigated the characteristics, driving factors, and significance of DCMs to phytoplankton productivity in the ISSO. The DCM dynamics in the ISSO are strongly influenced by upper ocean stratification, nutrient-light tradeoff, watermass structure, and sea-ice variability. The study indicated that biomass-driven DCMs occurred under moderate stratification and nutrient availability, whereas photoacclimated DCMs were reported under strong stratification and reduced light conditions. In the Seasonal sea-ice Zone (SIZ), the DCM formation was facilitated by the metwater-driven buoyancy formed by the sea-ice dynamics in association with the westerly anomalies. While episodic restratification and mixing led by zonal wind modulated DCM formation at the Polar front (PF-1), particularly during 2016. Across the ISSO, DCMs contributed ∼ 3.8% to 19.4% to the IPP. The biomass-driven DCMs enhanced IPP significantly compared to those formed by photoacclimation, contributing less to IPP. These findings highlight the significant influence of DCM layer production on water column productivity and on the efficacy of the biological carbon pump (BCP) in the ISSO.</div></div>","PeriodicalId":20620,"journal":{"name":"Progress in Oceanography","volume":"247 ","pages":"Article 103787"},"PeriodicalIF":3.9,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148356449","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":"Multiscale characterization of Solito seamount: a unique ecosystem with high conservation value","authors":"Jan M. Tapia-Guerra,&nbsp;Javier Sellanes,&nbsp;Erin E. Easton,&nbsp;Yakufu Niyazi,&nbsp;Javier Reyes,&nbsp;Angéline Bertin,&nbsp;Denise J.B. Swanborn,&nbsp;Eduardo A. Flores,&nbsp;Maritza Castro-Contreras,&nbsp;Ignacio Petit,&nbsp;Marco Pérez-González,&nbsp;Carlos F. Gaymer","doi":"10.1016/j.pocean.2026.103796","DOIUrl":"10.1016/j.pocean.2026.103796","url":null,"abstract":"<div><div>Solito seamount is a volcanic seamount rising more than 3,500 m from the abyssal plain off northern Chile, located at a biogeographic transition between the Nazca–Desventuradas and Juan Fernández systems in the southeastern Pacific Ocean. Here, we present the first integrated ecological characterization of this previously unexplored seamount using high-resolution bathymetric mapping, remotely operated vehicle surveys, and hydrographic profiling. Solito exhibited a heterogeneous benthic landscape composed of volcanic rocky outcrops, coral rubble fields, and soft-sediment habitats distributed across distinct depth strata. Hydrographic analyses revealed the influence of Subtropical Water, Equatorial Subsurface Water, and an Oxygen Minimum Zone, generating pronounced vertical gradients in temperature, salinity, and dissolved oxygen. A total of 131 morphotaxa across eight phyla were recorded, predominated by cnidarians, echinoderms, and crustaceans. Community composition varied significantly with depth and substrate type, with hard substrates and habitat-forming taxa supporting higher faunal density and structural complexity than soft-bottom habitats. The occurrence of vulnerable habitat-forming taxa, including cold-water corals and sponges, together with commercially important species such as <em>Chaceon chilensis</em>, <em>Beryx splendens</em>, and <em>Hoplostethus atlanticus</em>, highlights the ecological importance of this ecosystem. Regional faunal comparisons suggest biogeographic affinities with neighboring ridge systems. Visual surveys documented limited evidence of recent anthropogenic disturbance. These findings establish the first ecological baseline for Solito seamount and highlight its potential relevance for biodiversity conservation and spatial management in the southeastern Pacific.</div></div>","PeriodicalId":20620,"journal":{"name":"Progress in Oceanography","volume":"247 ","pages":"Article 103796"},"PeriodicalIF":3.9,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148385280","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":"Corrigendum to “Effect of Typhoon Kalmaegi (2014) on northern South China Sea explored using Multi-platform satellite and buoy observations data” [Prog. Oceanogr. 180 (2020) 102218]","authors":"Renhao Wu,&nbsp;Han Zhang,&nbsp;Dake Chen","doi":"10.1016/j.pocean.2026.103783","DOIUrl":"10.1016/j.pocean.2026.103783","url":null,"abstract":"","PeriodicalId":20620,"journal":{"name":"Progress in Oceanography","volume":"247 ","pages":"Article 103783"},"PeriodicalIF":3.9,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148384322","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":"Biodiversity and biogeography of the abyssal and hadal Aleutian Trench and adjacent North Pacific deep-sea regions","authors":"Angelika Brandt ,&nbsp;Davide Di Franco ,&nbsp;Stefanie Kaiser ,&nbsp;Anne Helene S. Tandberg ,&nbsp;Ronnie N. Glud","doi":"10.1016/j.pocean.2026.103748","DOIUrl":"10.1016/j.pocean.2026.103748","url":null,"abstract":"","PeriodicalId":20620,"journal":{"name":"Progress in Oceanography","volume":"246 ","pages":"Article 103748"},"PeriodicalIF":3.6,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148231513","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":"Copepod population restarts: naupliar recruitment phenology during the winter-to-spring transition","authors":"Lauren N. Block ,&nbsp;Alexandra M. Poje ,&nbsp;Russell R. Hopcroft ,&nbsp;Petra H. Lenz","doi":"10.1016/j.pocean.2026.103763","DOIUrl":"10.1016/j.pocean.2026.103763","url":null,"abstract":"<div><div>In high-latitude marine environments, the winter-to-spring transition is characterized by order-of-magnitude increases in copepod biomass in the photic zone. However, the overwintering populations and naupliar recruitment patterns that lead to this biomass increase are poorly characterized. In this study, zooplankton, phytoplankton, and environmental parameters were monitored from early January to late March in a deep Alaskan Fjord, Resurrection Bay. Copepods were identified and enumerated using microscopy and nauplii were speciated using DNA metabarcoding. A diverse community of adult and pre-adult copepods was found overwintering below 200 m, illustrating the importance of nearshore deep-water locations as overwintering habitats. Nauplii were abundant at all depths throughout the winter and were comprised of a diverse and changing species assemblage over the study period. Thirteen species clustered into three groups based on naupliar phenology: 1) presence during the winter and absence during the spring (e.g., <em>Neocalanus</em> spp.), 2) absence during the winter and presence during the spring (e.g., <em>Calanus marshallae</em>), and 3) presence during both winter and spring (e.g., <em>Metridia pacifica</em> and <em>Oithona similis</em>). The first two groups aligned with predicted phenologies of capital- and income-breeding species, respectively, but the presence of several income-breeding species in group three was unexpected. Furthermore, a temporal mismatch between nauplii and ovigerous females in this group suggests that some copepods are overwintering as nauplii while female reproduction remains tied to phytoplankton availability. Differences in overwintering strategies between closely related species revealed temporal niche partitioning. The diversity of species and reproductive phenologies may contribute to ecosystem stability and resilience.</div></div>","PeriodicalId":20620,"journal":{"name":"Progress in Oceanography","volume":"246 ","pages":"Article 103763"},"PeriodicalIF":3.6,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148168484","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":"Corrigendum to “Analysis of ecologically relevant sea ice and ocean variables for the Southern Ocean using a high-resolution model to inform ecosystem studies” [Prog Oceanogr. 215 (2023) 103049]","authors":"Denisse Fierro-Arcos ,&nbsp;Stuart Corney ,&nbsp;Amelie Meyer ,&nbsp;Hakase Hayashida ,&nbsp;Andrew E. Kiss ,&nbsp;Petra Heil","doi":"10.1016/j.pocean.2026.103759","DOIUrl":"10.1016/j.pocean.2026.103759","url":null,"abstract":"","PeriodicalId":20620,"journal":{"name":"Progress in Oceanography","volume":"246 ","pages":"Article 103759"},"PeriodicalIF":3.6,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148231514","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":"Oxygen depletion on the East China Sea shelf: climatology and long-term trends from the World Ocean Database","authors":"Zilin Li ,&nbsp;Xinyu Guo ,&nbsp;Tsueno Ono","doi":"10.1016/j.pocean.2026.103770","DOIUrl":"10.1016/j.pocean.2026.103770","url":null,"abstract":"<div><div>Seasonal oxygen depletion has been increasingly reported on the East China Sea (ECS) shelf since the early 2000s; however, its long-term evolution and underlying drivers remain poorly understood. Using historical observations from the World Ocean Database (1951–2006), we reconstruct basin-scale variability of dissolved oxygen (DO) across the ECS shelf and analyze both seasonal patterns and multi-decadal trends. Our results show that oxygen depletion (DO ≤ 4 mg L⁻¹) on the mid–outer ECS shelf has occurred regularly since the 1950s, substantially earlier than previously reported observations, which mainly documented its occurrence after the early 2000s. Oxygen depletion recurs from summer to autumn, with oxygen stress shifting from the inner shelf in late summer toward the mid–outer shelf along the 50–100 m isobaths in autumn. A significant decline in bottom DO is detected over the mid–outer shelf during 1960–1999 and is accompanied by increasing apparent oxygen utilization (AOU). By combining AOU diagnostics with a three-endmember mixing model, oxygen deficits are partitioned into locally generated consumption and remotely advected components. The results indicate that local remineralization dominates oxygen consumption, while the intrusion of oxygen-poor Kuroshio Subsurface Water reduces the background oxygen inventory and modulates the intensity of seasonal depletion. These findings reveal that oxygen depletion on the ECS shelf has a longer history and broader spatial extent than previously recognized.</div></div>","PeriodicalId":20620,"journal":{"name":"Progress in Oceanography","volume":"246 ","pages":"Article 103770"},"PeriodicalIF":3.6,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148168485","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":"Corrigendum to “Impact of multiple drivers on benthic macrofauna trophic position, functional diversity and ecological memory – analysis of 40 years data using a complex model hierarchy” [Prog. Oceanogr. 239 (2025) 103561]","authors":"Joachim W. Dippner ,&nbsp;Ana Fernández Carrera ,&nbsp;Ingrid Kröncke ,&nbsp;Iris Liskow ,&nbsp;Natalie Loick–Wilde ,&nbsp;Maren Voss","doi":"10.1016/j.pocean.2026.103768","DOIUrl":"10.1016/j.pocean.2026.103768","url":null,"abstract":"","PeriodicalId":20620,"journal":{"name":"Progress in Oceanography","volume":"246 ","pages":"Article 103768"},"PeriodicalIF":3.6,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148231515","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":"Influence of mesoscale eddies on Indonesian throughflow dynamics in the Sulawesi Sea simulated in an ocean general circulation model","authors":"Fuad Azminuddin ,&nbsp;Adi Purwandana ,&nbsp;Aloysius Bagyo Widagdo ,&nbsp;Mardi Wibowo ,&nbsp;Raden Dwi Susanto","doi":"10.1016/j.pocean.2026.103769","DOIUrl":"10.1016/j.pocean.2026.103769","url":null,"abstract":"<div><div>The Sulawesi Sea is the key entrance of the Indonesian Throughflow (ITF), connecting the western Pacific Ocean to the Indonesian seas. Mesoscale eddies are frequently observed in this semi-enclosed basin; however their interaction with the ITF remains largely unexplored. Using a high-resolution ocean reanalysis for the period 1993–2020, this study examines the distribution, variability, and influence of mesoscale eddies on ITF circulation in the Sulawesi Sea.</div><div>The basin circulation is characterized by ITF from the Pacific toward the Makassar Strait, with two secondary pathways: the Sulu-to-Sulawesi Sea inflow (SSI) and the Sulawesi-Maluku Sea exchange flow (SME). We identified three quasi-persistent mesoscale eddies: an anticyclonic eddy in the northern basin (NSAE) and two cyclonic eddies in the southwestern (WSCE) and southeastern (ESCE) regions. WSCE exhibits the most persistent occurrence (60%), whereas ESCE has the largest mean length scale (∼118 km).</div><div>Cyclonic eddies intensify during weakened ITF and enhanced SSI and SME, whereas anticyclonic variability is closely associated with strong ITF inflow. Composite and lagged analyses indicate that cyclonic eddies recirculate and divert a portion of ITF waters toward the Maluku Sea, thereby reducing effective throughflow to the Makassar Strait. Seasonally, ITF strengthens in boreal summer and weakens in early winter, opposite to eddy activity, while interannually, ITF transport is enhanced (reduced) during La Niña (El Niño), resulting in suppressed (enhanced) eddy energy. The findings highlight a two-way interaction between mesoscale eddies and the ITF, emphasizing the critical role of local eddy dynamics in regulating ITF pathways at this Indo-Pacific gateway.</div></div>","PeriodicalId":20620,"journal":{"name":"Progress in Oceanography","volume":"246 ","pages":"Article 103769"},"PeriodicalIF":3.6,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148168486","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":"Submesoscale dynamics in the Baltic Sea – a review","authors":"Urmas Lips ,&nbsp;Kai Salm ,&nbsp;Germo Väli ,&nbsp;Taavi Liblik ,&nbsp;Lars Arneborg ,&nbsp;Louise C. Biddle ,&nbsp;Anna I. Bulczak ,&nbsp;Evridiki Chrysagi ,&nbsp;Małgorzata Falarz ,&nbsp;Peter Holtermann ,&nbsp;Jaromir Jakacki ,&nbsp;H. E. Markus Meier ,&nbsp;Martin Mohrmann ,&nbsp;Kai Myrberg ,&nbsp;Per Pemberton ,&nbsp;Lars Umlauf","doi":"10.1016/j.pocean.2026.103746","DOIUrl":"10.1016/j.pocean.2026.103746","url":null,"abstract":"<div><div>The main aim of this work is to provide a comprehensive literature review of the current state of knowledge on submesoscale (SMS) dynamics in the Baltic Sea, with potential implications for other similar coastal and marginal seas. Relevant spatial and temporal scales in the Baltic Sea, as well as idealized quantitative descriptions of SMS instabilities, are presented. The methods for studying SMS processes are described, and the availability of the required research infrastructure and relevant data is discussed. The knowledge on SMS processes and their role in coastal-offshore exchanges, vertical and horizontal mixing, and the development of stratification in the Baltic Sea is reviewed and compared with studies in other regions. Processes at adjacent scales and their links to SMS dynamics, including mesoscale features such as upwelling events, fronts, and baroclinic currents in geostrophic balance, as well as small-scale turbulence, are described. This analysis demonstrates that SMS processes may substantially influence large-scale dynamics of the Baltic Sea, challenging the classical understanding of energy transfer across spatial scales that omits instabilities and feedback loops in the SMS range. The review suggests that SMS processes play a role in the biogeochemical functioning of the Baltic Sea by providing vertical fluxes of substances and redistributing plankton biomass. We emphasize that extensive model validation with high-resolution in-situ data remains an urgent task, and a more accurate description of SMS processes in sub-grid parameterizations within large-scale models is necessary. Gaps in knowledge of SMS dynamics and potential further steps to address them are highlighted.</div></div>","PeriodicalId":20620,"journal":{"name":"Progress in Oceanography","volume":"245 ","pages":"Article 103746"},"PeriodicalIF":3.6,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147799228","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}