-
Habitat shifts of the vulnerable crinoid Leptometra phalangium under climate change scenarios Prog. Oceanogr. (IF 3.8) Pub Date : 2024-09-24 Jade Millot, Vincent Georges, Valentina Lauria, Tarek Hattab, Carlos Dominguez-Carrió, Vasilis Gerovasileiou, Christopher J. Smith, Chryssi Mytilineou, M. Teresa Farriols, Marie-Claire Fabri, Pierluigi Carbonara, Daniela Massi, Paola Rinelli, Adriana Profeta, Giovanni Chimienti, Angélique Jadaud, Ioannis Thasitis, Kelly Camilleri, Jurgen Mifsud, Sandrine Vaz
Crinoid beds of Leptometra phalangium (Müller, 1841) have been identified as sensitive habitats by the General Fisheries Commission for the Mediterranean (GFCM) due to their high vulnerability to bottom trawl fisheries. Poorly resilient to physical damage, L. phalangium has been listed as a potential indicator of Vulnerable Marine Ecosystems (VMEs) in the Mediterranean Sea. If fishing activities represent
-
Three-dimensional structure of temperature, salinity, and Velocity of the summertime Vietnamese upwelling system in the South China Sea on the interannual timescale Prog. Oceanogr. (IF 3.8) Pub Date : 2024-09-23 Mai-Han Ngo, Yi-Chia Hsin
Summertime upwelling system off the southern Vietnamese coast is one of the most essential oceanographic features in the South China Sea. This system is divided into two regions along the coast, the Southern Coastal Upwelling (SCU; south of 12.5°N) and Northern Coastal Upwelling (NCU; north of 12.5°N), and one in the offshore area, the Offshore Upwelling (OU; east of 110°E). Utilizing the HYCOM ocean
-
Effects of increased temperature and altered POC composition on a bathyal macrofaunal community in Cabo Verde, NE Atlantic Prog. Oceanogr. (IF 3.8) Pub Date : 2024-09-14 Daniela Y. Gaurisas, Daniëlle S.W. de Jonge, Andrew K. Sweetman, Angelo F. Bernardino
Deep-sea ecosystems are particularly important to the cycling of matter and energy in the oceans and therefore in regulating Earth’s climate. The Atlantic Ocean is already experiencing significant abiotic changes, with expected warmer temperatures coupled with decreased particulate organic carbon (POC) export flux. However, there is yet a large gap in our understanding of warming impacts on deep benthic
-
Circulation and dispersal in California’s Borderland Basins Prog. Oceanogr. (IF 3.8) Pub Date : 2024-09-12 James C. McWilliams, Pierre Damien, Faycal Kessouri
The Borderland Basins off Southern California are semi-isolated sea-floor depressions with connections to each other and to the open Pacific Ocean over narrow sills. A high-resolution, multi-year simulation is analyzed for its currents, stratification, and dissolved oxygen, with a focus on the mean conditions, intrinsic variability, and exchange rates with surrounding waters. The three shallowest,
-
Drivers of microbial carbon biomass variability in two oceanic regions of the Gulf of Mexico Prog. Oceanogr. (IF 3.8) Pub Date : 2024-09-07 L. Linacre, R. Durazo, V. Camacho-Ibar, U. Mirabal-Gómez, J.A. Velásquez-Aristizábal, C. Sánchez-Robles, J.R. Lara-Lara, C. Bazán-Guzmán
The microbial plankton community is an integral part of the pelagic ecosystem. It hosts essential functional groups that play a vital role in organic carbon production, release, uptake, and degradation within open-ocean ecosystems. Given its significance, carbon biomass estimates are urgently needed, especially in oligotrophic regions, to provide and enhance our knowledge of biogenic carbon pools.
-
Nutrient stoichiometry drives the phytoplankton populations during the progression of upwelling along the eastern Arabian Sea Prog. Oceanogr. (IF 3.8) Pub Date : 2024-09-06 B. Bikram Reddy, Anil Kumar Vijayan, V. Sudheesh, C.K. Sherin, Rajdeep Roy, N.N. Vishnu, G.V.M. Gupta
The basin-wide phytoplankton succession and community behaviour in response to varying nutrient patterns during various upwelling phases are detailed, for the first time, in the eastern Arabian Sea (EAS, ∼6 to 22N) during the summer monsoon (SM) of 2018. Three consecutive observations were carried out during early SM (June-July), peak SM (August), and late SM (September-October), representing different
-
In situ benthic community response to a phytodetritus pulse in the Cabo Verde Abyssal Basin (tropical NE Atlantic) Prog. Oceanogr. (IF 3.8) Pub Date : 2024-09-05 Daniëlle S.W. de Jonge, Daniela Y. Gaurisas, Alycia J. Smith, Eloise Holmes, Covadonga Orejas, Ángela Mosquera Giménez, J. Murray Roberts, Angelo F. Bernardino, Andrew K. Sweetman
Ecosystem functioning, i.e. the transfer of material through a system, supports the ecosystem services deep-sea sediments provide, including carbon sequestration, nutrient regeneration, and climate regulation. To date, seven studies globally have researched how various benthic groups contribute to organic matter degradation in abyssal sediments through stable isotope tracer experiments, of which only
-
Environmental variability shapes trophic and resource partitioning between epipelagic and mesopelagic biomes in oceanic provinces: Implications in a globally changing ocean Prog. Oceanogr. (IF 3.8) Pub Date : 2024-09-05 Pavanee Annasawmy, Frédéric Ménard, Francis Marsac, Jean-François Ternon, Yves Cherel, Evgeny Romanov, François Le Loc’h
Trophic links between the epipelagic (< 200 m) and mesopelagic layers of the Indian Ocean were investigated by carbon and nitrogen stable isotope ratios of 2405 samples collected from 2002 to 2016, and that encompass the base of trophic webs, and primary, secondary and tertiary consumers. The samples include particulate organic matter, gastropods, gelatinous organisms such as salps and pyrosomes, crustaceans
-
Stable isotope spatial patterns for the Southwest Atlantic Ocean towards polar waters Prog. Oceanogr. (IF 3.8) Pub Date : 2024-08-26 Luciana Riccialdelli, Samanta Dodino, Clara M. Iachetti, Santiago Favoretti, Daniel O. Bruno, Mónica A. Torres, Yamila A. Becker, Daniel A. Fernández, Andrea Raya Rey
Mapping stable isotope gradients (isoscapes) has become a powerful tool to understand and forecast the status and variability of marine ecosystems at different levels of ecological organization. To differentiate five marine areas from the Southwest Atlantic Ocean towards oceanic and polar waters, a key foraging area for many marine consumers, we built isoscapes at different spatial scales using carbon
-
Seasonal resource tracking and use of sea-ice foraging habitats by albatrosses and large petrels Prog. Oceanogr. (IF 3.8) Pub Date : 2024-08-19 Ewan D. Wakefield, Erin L. McClymont, Ana P.B. Carneiro, John P. Croxall, Jacob González-Solís, Hannah M.V. Granroth-Wilding, Lesley Thorne, Victoria Warwick-Evans, Andrew G. Wood, Jose C. Xavier, Richard A. Phillips
The Antarctic seasonal sea-ice zone (SIZ) is one of the most extensive and dynamic habitats on Earth. In summer, increased insolation and ice melt cause primary production to peak, sustaining large populations of locally-breeding seabirds. Due to their hypermobility, large Procellariiformes, including albatrosses, breeding in the subantarctic also have the potential to access the SIZ and track macroscale
-
Seasonal variations in the contribution of zooplankton fecal pellets to the particulate organic carbon fluxes over the slopes of the Pacific Arctic region Prog. Oceanogr. (IF 3.8) Pub Date : 2024-08-18 Jeong-Hyun Kim, Catherine Lalande, Eun Jin Yang, Kyoung-Ho Cho, Dongseon Kim, Jong-Kuk Moon, Hyeju Yoo
As part of the Korea Arctic Mooring System (KAMS), sequential sediment traps were deployed at KAMS1 over the East Siberian Sea slope (∼115 and ∼335 m) and at KAMS2 over the Chukchi Sea slope (325 m) to collect sinking particles from August 2017 to August 2019. Fecal pellet carbon (FPC) fluxes and their contribution to the particulate organic carbon (POC) fluxes were measured to assess the role of zooplankton
-
Mapping phenoregions and phytoplankton seasonality in Northeast Pacific marine coastal ecosystems via a satellite-based approach Prog. Oceanogr. (IF 3.8) Pub Date : 2024-08-17 Sejal Pramlall, Jennifer M. Jackson, Christian Marchese, Karyn D. Suchy, Brian P.V. Hunt, Maycira Costa
Phytoplankton phenology describes yearly algal growth cycles and characterises the timing, duration, and magnitude of bloom occurrences. This study used satellite chlorophyll-a data from 1998 to 2020 and the Hierarchical Agglomerative Clustering method to define phenoregions based on phytoplankton phenology spatial patterns over the British Columbia and Southeast Alaska coastal oceans. The defined
-
Distribution patterns of micronektonic crustaceans (Decapoda, Euphausiacea, and Lophogastrida) in the tropical and subtropical Atlantic Ocean Prog. Oceanogr. (IF 3.8) Pub Date : 2024-08-17 Javier Díaz-Pérez, José M. Landeira, Santiago Hernández-León, M. José Reyes-Martínez, Juan Ignacio González-Gordillo
Large pelagic crustaceans are a main component of the micronekton community in the deep-sea having an important role in the food webs and the biological carbon pump. However, they are scarcely studied in comparison to other groups such as mesopelagic fish. Here, we analyse day/night and bathymetric variability in taxonomic composition, abundance, and biomass across a latitudinal transect in the Atlantic
-
Spatial patterns in chlorophyll a concentration during the winter–spring periods in the Barents Sea Prog. Oceanogr. (IF 3.8) Pub Date : 2024-08-16 Vladimir G. Dvoretsky, Veronika V. Vodopianova, Aleksandra S. Bulavina, Ivan A. Pastukhov
Climatic fluctuations have been documented to strongly affect Arctic marine ecosystems. Plankton assemblages serve as the most sensitive indicators of such environmental forcing. We conducted a study to investigate the spatial variability of chlorophyll (Chl-a) concentration during two pre-bloom periods (March–April 2021 and February–March 2022) in relation to the distribution of different water masses
-
Spatiotemporal variations in vertical profiles of Fukushima-derived 137Cs in the Kuroshio-Oyashio confluence region from 2011 to 2018: Implications for local water mass dynamics and basin-scale circulations Prog. Oceanogr. (IF 3.8) Pub Date : 2024-08-14 Fule Zhang, Dekun Huang, Yunping Xu, Jiang Huang, Jinzhou Du, Tao Yu
Tracking the processes of the spread of Fukushima-derived Cs (Cs) contributes to a better understanding of North Pacific water dynamics. In this study, the vertical distributions of Cs and Sr in the Kuroshio-Oyashio confluence region were investigated in May 2018, and Cs was separated from the background Cs by exploiting the constant global fallout Cs/Sr ratio. To the north of 35°N, Cs peaked in the
-
Water mass evolution and general circulation of Baffin Bay: Observations from two shipboard surveys in 2021 Prog. Oceanogr. (IF 3.8) Pub Date : 2024-08-09 Jie Huang, Robert S. Pickart, Frank Bahr, Leah T. McRaven, Jean-Éric Tremblay, Christine Michel, Emil Jeansson, Ben Kopec, Jeffrey M. Welker, Sólveig R. Ólafsdóttir
Baffin Bay is an Arctic marginal sea connected to the North Atlantic via Davis Strait and the Labrador Sea. While the exchange of heat and freshwater through Davis Strait is known to strongly influence the subpolar North Atlantic, there are significant gaps in our understanding of the circulation and water mass distribution and transformation throughout Baffin Bay, in part due to limited direct velocity
-
Modulation of the internal wave regime over a tropical seamount ecosystem by basin-scale oceanographic processes Prog. Oceanogr. (IF 3.8) Pub Date : 2024-08-09 E. Robinson, P. Hosegood, A. Bolton
Shallow seamounts are becoming increasingly recognised as key habitats for conservation due to their role as biological refuges, particularly throughout oligotrophic oceans. Traditionally, Taylor caps have been invoked as the mechanism driving biomass aggregation over seamounts but emerging evidence based on higher resolution measurements highlights the importance of internal waves (IW) to the local
-
Seasonality in phytoplankton communities and production in three Arctic fjords across a climate gradient Prog. Oceanogr. (IF 3.8) Pub Date : 2024-07-28 Cheshtaa Chitkara, Thomas Juul-Pedersen, Diana Krawczyk, Janne E. Søreide, Anna Vader, Rolf Gradinger, Mie HS Winding, Tobias R Vonnahme
Phytoplankton communities and production in Arctic fjords undergo strong seasonal variations. Phytoplankton blooms are periods with high primary production, leading to elevated algal biomass fueling higher trophic levels. Blooms are typically driven bottom-up by light and nutrient availability but may also be top-down controlled by grazing. While phytoplankton spring blooms are common across all Arctic
-
At the base of deep-sea food webs: Assemblage and trophic structure of suprabenthos and zooplankton in submarine canyons Prog. Oceanogr. (IF 3.8) Pub Date : 2024-07-26 Paula Masiá, Julian Sozio, Zaira Da Ros, Emanuela Fanelli
Submarine canyons act as hotspots of biodiversity, hosting vulnerable marine ecosystems, and playing a fundamental role in bridging coastal zones with deeper areas. Here, we investigated the suprabenthic and Deep Scattering Layer (DSL) zooplankton fauna, that play a key role in deep-sea food webs, as main resources for both mobile and sessile megafauna, in two submarine canyons (Squillace and Amendolara)
-
Bioregionalization of the subarctic Pacific based on phytoplankton phenology and composition Prog. Oceanogr. (IF 3.8) Pub Date : 2024-07-26 Marta Konik, M. Angelica Peña, Toru Hirawake, Brian P.V. Hunt, Perumthuruthil Suseelan Vishnu, Lisa B. Eisner, Astrid Bracher, Hongyan Xi, Christian Marchese, Maycira Costa
The subarctic Pacific is generally perceived as relatively homogeneous since the North Pacific Subpolar Gyre dominates the water circulation in the area. However, previous research showed significant spatial differences in phytoplankton abundance and community structure. This study aimed to identify regions associated with distinct phytoplankton phenology and composition to comprehensively describe
-
Constraining the twilight zone remineralization in the South China Sea basin: Insights from the multi-method intercomparison Prog. Oceanogr. (IF 3.8) Pub Date : 2024-07-25 Chao Xu, Mingwang Xiang, Bingzhang Chen, Yibin Huang, Guoqiang Qiu, Yuchen Zhang, Haili Wang, Bangqin Huang
The twilight zone remineralization (TZR) consumes over 70% of organic carbon exported from the sunlit ocean, significantly affecting oceanic carbon sequestration and atmospheric CO concentration. Despite the well-established importance, the quantification of TZR remains challenging, as reflected by conspicuous methodological discrepancy and the unsolved imbalance between carbon supply from the upper
-
From nutrients to fish: Impacts of mesoscale processes in a global CESM-FEISTY eddying ocean model framework Prog. Oceanogr. (IF 3.8) Pub Date : 2024-07-19 Kristen M. Krumhardt, Matthew C. Long, Colleen M. Petrik, Michael Levy, Frederic S. Castruccio, Keith Lindsay, Lev Romashkov, Anna-Lena Deppenmeier, Rémy Denéchère, Zhuomin Chen, Laura Landrum, Gokhan Danabasoglu, Ping Chang
The ocean sustains ecosystems that are essential for human livelihood and habitability of the planet. The ocean holds an enormous amount of carbon, and serves as a critical source of nutrition for human societies worldwide. Climate variability and change impact marine biogeochemistry and ecosystems. Thus, having state-of-the-art simulations of the ocean, which include marine biogeochemistry and ecosystems
-
Modelling the multiple action pathways of projected climate change on the Pacific cod (Gadus macrocephalus) early life stages Prog. Oceanogr. (IF 3.8) Pub Date : 2024-07-18 Giancarlo M. Correa, Thomas P. Hurst, William T. Stockhausen, Lorenzo Ciannelli, Trond Kristiansen, Darren J. Pilcher
Understanding how future ocean conditions will impact early life stages and population recruitment of fishes is critical for adapting fisheries communities to climate change. In this study, we incorporated projected changes in physical and biological ecosystem dynamics from an oceanographic model into a mechanistic individual-based model for larval and juvenile stages of the Pacific cod () in the eastern
-
Dynamic population modeling of bacterioplankton community response to gelatinous marine zooplankton bloom collapse and its impact on marine nutrient balance Prog. Oceanogr. (IF 3.8) Pub Date : 2024-07-18 Filip Strniša, Tinkara Tinta, Gerhard J. Herndl, Gregor Kosec
The diverse microbial community in the ocean, encompassing various metabolic types, interacts with the wide array of compounds in the dissolved organic matter (DOM) pool, thereby influencing the ocean’s biogeochemical state and, consequently, the global climate. Our understanding of the interactions between specific DOM constituents and microbial consortia remains limited, necessitating further refinement
-
A 70-year perspective on water-mass transformation in the Greenland Sea: From thermobaric to thermal convection Prog. Oceanogr. (IF 3.8) Pub Date : 2024-07-08 Anna-Marie Strehl, Kjetil Våge, Lars H. Smedsrud, Thibaut Barreyre
The hydrography of the central Greenland Sea was reconstructed from observations including bottle measurements, Conductivity/ Temperature/ Depth (CTD) measurements, and Argo floats for the period 1950 to 2020. Greenland Sea Deep Water was renewed during bottom-reaching convection prior to the mid-1980s, facilitated by the thermobaric effect. During a period of shallow convection in the late 1980s and
-
Intercomparison of ocean temperature and circulation near the Galápagos islands in high-resolution models and observations Prog. Oceanogr. (IF 3.8) Pub Date : 2024-07-03 Mikell Warms, Kristopher B. Karnauskas, Dhrubajyoti Samanta
The mean structure and variability of the Equatorial Undercurrent (EUC) have important implications for upwelling, sea surface temperature (SST), and productivity in the ecologically vital Galápagos Cold Pool. Historically, global coupled climate model simulations have exhibited considerable biases in their simulation of the EUC due to the requirement of relatively high spatial resolution to represent
-
Zooplankton communities at the sea surface of the eastern Indian sector of the Southern Ocean during the austral summer of 2018/2019 Prog. Oceanogr. (IF 3.8) Pub Date : 2024-07-02 Fokje L. Schaafsma, Kohei Matsuno, Ryan Driscoll, Hiroko Sasaki, Marin van Regteren, Sara Driscoll, Ryuichi Matsukura, Rikuto Sugioka, Ippei Urabe, Hiroto Murase, Jan Andries van Franeker
Knowledge on the distribution of zooplankton in the many unique habitats of the Southern Ocean is essential for understanding food web dynamics, assessing the impacts of environmental change and for managing the exploitation of marine living resources. Variation in the distribution of zooplankton may occur in the horizontal as well as the vertical plane, and the latter may show a diel cycle (diel vertical
-
Physical optima for nitrogen fixation in cyclonic eddies in the Subtropical Northwestern Pacific Prog. Oceanogr. (IF 3.8) Pub Date : 2024-06-30 Hui Shen, Xianhui S. Wan, Wenbin Zou, Mingming Chen, Zhendong Hu, Senwei Tong, Kuanbo Zhou, Zong-Pei Jiang, Yao Zhang, Minhan Dai, Shuh-Ji Kao
Nitrogen fixation is a vital new nitrogen source in the oligotrophic ocean. Although our knowledge of the controlling factors of marine nitrogen fixation have increased rapidly, the physical controls, particularly eddies-induced upwelling and light intensity, remain elusive. In this study, conducted in the Subtropical Northwestern Pacific, we measured nitrogen fixation rates (NFR) in two cyclonic eddies
-
Evolution of internal tide scattering hidden below mesoscale eddies Prog. Oceanogr. (IF 3.8) Pub Date : 2024-06-29 Bingtian Li, Minjie Xu, Wanqian Chen, Yibo Yuan, Yongzhi Liu, Shujiang Li
The internal tide (IT) is the internal wave with tidal frequency. During propagation, ITs are scattered by topographies such as seamounts and slopes. Mesoscale eddies, which generally consist of anticyclonic eddies (AEs) and cyclonic eddies (CEs), are widely observed in the ocean and can modulate scattering processes. However, whether AEs and CEs affect topographic scattering of IT differently is unknown
-
Zooplankton link climate to capelin and polar cod in the Barents Sea Prog. Oceanogr. (IF 3.8) Pub Date : 2024-06-28 Padmini Dalpadado, Irina P. Prokopchuk, Bjarte Bogstad, Georg Skaret, Randi B. Ingvaldsen, Andrey V. Dolgov, Anna S. Boyko, Alina Rey, Kotaro Ono, Espen Bagøien, Geir Huse
Capelin () and polar cod () hold a fundamental position in the Barents Sea ecosystem as consumers of zooplankton while serving as forage fish for the commercial and ecological key species Atlantic cod (). The ongoing warming and Atlantification of the Barents Sea, along with increasing net primary production, makes previously inaccessible northern areas available as feeding grounds for capelin. The
-
Diet and trophic structure of fishes in the Barents Sea: Effects of size within (ontogenetic) and between species Prog. Oceanogr. (IF 3.8) Pub Date : 2024-06-23 Elena Eriksen, Hein Rune Skjoldal, Kotaro Ono, Andrey Dolgov
A large data set on stomach content (over 27,000 individual fish) – collected in the Barents Sea in 2015 – was used to examine ontogenetic and interspecific changes in diet with size for 35 fish species. The analysis combined the use of hierarchical clustering and random forest. Two different diet metrics were used (% weight of prey types per weight of stomach content or per weight of fish, the latter
-
Distribution, biology, and relative abundance of the understudied deep-water whiteblotched skate Bathyraja maculata Prog. Oceanogr. (IF 3.8) Pub Date : 2024-06-22 Igor V. Grigorov, Kirill K. Kivva, Igor V. Volvenko, Alexei M. Orlov
-
Collapse of a giant iceberg in a dynamic Southern Ocean marine ecosystem: In situ observations of A-68A at South Georgia Prog. Oceanogr. (IF 3.8) Pub Date : 2024-06-13 Geraint A. Tarling, Sally E. Thorpe, Sian F. Henley, Amanda Burson, Cecilia M. Liszka, Clara Manno, Natasha S. Lucas, Freyja Ward, Katharine R. Hendry, E. Malcolm S. Woodward, Marianne Wootton, E. Povl Abrahamsen
Large icebergs (>20 km long) are responsible for most of the freshwater discharged into the Southern Ocean. We report on in situ and satellite observations made during the break-up phase around South Georgia of the giant tabular iceberg A-68A. The in situ measurements were obtained during a 4-day visit by a research vessel in February 2021, where physical, chemical and biological measurements were
-
Abundance of humpback whales in the eastern Indian sector of the Southern Ocean in 2018/19 using opportunistic sighting survey data with a note on the occurrence of other cetaceans Prog. Oceanogr. (IF 3.8) Pub Date : 2024-06-11 Kohei Hamabe, Tomio Miyashita, Reiko Nagata, Hiroko Sasaki, Hiroto Murase
Past commercial whaling depleted the humpback whale in the Southern Ocean; however, its population has recovered since hunting was terminated in 1966. Information on abundance is essential not only managing target animals but understanding the ecosystem because the species is one of the main consumers of Antarctic krill. Abundance of this species has not been reported in the eastern Indian sector (80–150°E)
-
A new method of estimating carbon sequestration and its efficiency in coastal waters Prog. Oceanogr. (IF 3.8) Pub Date : 2024-06-02 Zhiyao Xiong, Yafeng Zhang, Junjian Liang, Zhiqiao Chen, Lei He, Kedong Yin
The biological pump (BP) in oceans refers to the fraction of phytoplankton organic matter sinking out of the euphotic zone (surface layer) into below the pycnocline layer (bottom layer) in the water column. Currently, sediment traps are commonly used to estimate organic settlement and carbon sequestration in open oceans, but the installation of the sediment traps in the ocean requires special efforts
-
On relationships between the Indonesian Throughflow and the chlorophyll bloom within the Seychelles-Chagos Thermocline Ridge Prog. Oceanogr. (IF 3.8) Pub Date : 2024-05-31 M.D. Carr, B. Aguiar-González, J. Hermes, J. Veitch, C.J.C. Reason
The Seychelles-Chagos Thermocline Ridge (SCTR) is a biologically important region of open ocean upwelling within the south west Indian Ocean (5–10°S and 45–90°E), driven by the tropical gyre. The SCTR refers to an elongated feature that joins two local minima in thermocline depth; the Seychelles Dome (SD) and Chagos Dome (CD). Entering the ocean basin from the east, the Indonesian Throughflow (ITF)
-
Ongoing borealization of Siberian Arctic marine ichthyofauna: Further evidence Prog. Oceanogr. (IF 3.8) Pub Date : 2024-05-31 Alexei M. Orlov, Igor V. Volvenko
-
Drivers of organic carbon distribution and accumulation in the northern Barents Sea Prog. Oceanogr. (IF 3.8) Pub Date : 2024-05-27 Thaise Ricardo de Freitas, Silvia Hess, Paul E. Renaud, Peter Appleby, Elisabeth Alve
Sedimentary properties and accumulation rates on the continental shelf and in the deep sea reflect temporal oceanographic, biological and chemical processes occurring in the water column and the sediment surface. We used the radionuclides Pb, Ra, and Cs activities to estimate sedimentation rates during the last century at nine stations in the northern Barents Sea region. Elemental (C, N) and stable
-
Revisiting circulation and water masses over the East Antarctic margin (80–150°E) Prog. Oceanogr. (IF 3.8) Pub Date : 2024-05-24 Kaihe Yamazaki, Katsuro Katsumata, Daisuke Hirano, Daiki Nomura, Hiroko Sasaki, Hiroto Murase, Shigeru Aoki
Full-depth hydrographic sections of the BROKE experiment in 1996 (across the Antarctic margin from 80 to 150°E; ) were revisited for the first time during the 2018/2019 austral summer. We describe the subsurface physical oceanography in 2019 and the hydrographic changes between 1996 and 2019 not documented in earlier studies. The survey captured decadal changes in ocean structure from the southern
-
Corrigendum to “Modeling the larval dispersal and connectivity of Red Snapper (Lutjanus campechanus) in the Northern Gulf of Mexico” [Prog. Oceanogr. 224 (2024) 103265] Prog. Oceanogr. (IF 3.8) Pub Date : 2024-05-23 Xing Zhou, Luisa Lopera, Adela Roa-Varón, Annalisa Bracco
-
Generation of diurnal internal solitary waves (ISW-D) in the Sulu Sea: From geostationary orbit satellites and numerical simulations Prog. Oceanogr. (IF 3.8) Pub Date : 2024-05-23 Longyu Huang, Jingsong Yang, Zetai Ma, Bingqing Liu, Lin Ren, Antony K. Liu, Peng Chen
Our recent study reported the existence of internal solitary waves with the diurnal tidal cycle (ISW-D) in the Sulu Sea, however, the three-dimensional characteristics and generation mechanism of ISW-D are still unclear (Huang et al., 2023). In this work, the spatial–temporal characteristics, generation mechanism and propagating process of ISW-D in the Sulu Sea are first preliminary investigated based
-
Partnering with the commercial fishing sector and Aotearoa New Zealand’s ocean community to develop a nationwide subsurface temperature monitoring program Prog. Oceanogr. (IF 3.8) Pub Date : 2024-05-22 Julie Jakoboski, Moninya Roughan, John Radford, João Marcos Azevedo Correia de Souza, Malene Felsing, Robert Smith, Naomi Puketapu-Waite, Mireya Montaño Orozco, Kimberley H. Maxwell, Cooper Van Vranken
Coastal regions of the world’s oceans are critical to supporting the fishing sector, recreation, tourism, and the global blue economy. However, there is a paucity of subsurface, ocean measurements in coastal and shelf regions worldwide that corresponds to the region where a majority of commercial fishing occurs. In Aotearoa New Zealand, the Moana Project and technology partner ZebraTech, Ltd. have
-
A switch in thermal and haline contributions to stratification in the Greenland Sea during the last four decades Prog. Oceanogr. (IF 3.8) Pub Date : 2024-05-22 Caroline V.B. Gjelstrup, Colin A. Stedmon
Stratification and its thermal and haline contributions are important ocean properties of fundamental climatic influence. Upper-ocean stratification shapes marine ecosystems by regulating nutrient availability and deep-ocean stratification is important for carbon sequestration and ventilating the ocean interior. Here, we first assess the applicability of an ocean reanalysis product in representing
-
Diversity and endemism of hard-shelled benthic foraminifera in permanently oxygen-depleted bottom waters: An analysis from the eastern Pacific Prog. Oceanogr. (IF 3.8) Pub Date : 2024-05-18 Paula Diz, Rita González-Villanueva, Emilio García-Roselló
Benthic foraminifera are single-celled organisms inhabiting all marine environments. Despite their high tolerance to oxygen depletion, the prevailing hypothesis anticipates a reduction in their diversity in permanently oxygen-depleted environments, including oxygen minimum zones. Here we re-evaluate diversity and study the endemism of benthic foraminifera in the eastern Pacific, an oceanic area hosting
-
State, variability, and trophic interactions in the Atlantic gateway to the Arctic Prog. Oceanogr. (IF 3.8) Pub Date : 2024-05-17 Randi B. Ingvaldsen, Elena Eriksen, Tore Haug, Hein Rune Skjoldal
-
A “trapezoidal” relationship between solar radiation and chlorophyll concentrations at the center of the South Pacific Gyre Prog. Oceanogr. (IF 3.8) Pub Date : 2024-05-16 Dongmei Lian, Xin Liu, Edward A. Laws, Tongtong Liu, Jingxiao Wang, Shaoling Shang, Zhongping Lee
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
-
Modeling the larval growth and survival of Pacific cod (Gadus macrocephalus) in the eastern Bering Sea Prog. Oceanogr. (IF 3.8) Pub Date : 2024-05-15 Giancarlo M. Correa, Thomas P. Hurst, William T. Stockhausen, Lorenzo Ciannelli, Trond Kristiansen, Darren J. Pilcher
The eastern Bering Sea (EBS) is a highly productive ecosystem that supports several important commercial species such as the Pacific cod (). 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
-
Cracking the dynamic code of the deep: Unexpected seasonal patterns of active protistan-bacterial microbiomes in the mesopelagic zone of the South China Sea Prog. Oceanogr. (IF 3.8) Pub Date : 2024-05-15 Ping Sun, Ying Wang, Xin Huang, SuSu Xu, Ramiro Logares, Yibin Huang, Dapeng Xu, Bangqin Huang
-
The impact of advection on a Subarctic fjord food web dominated by the copepod Calanus finmarchicus Prog. Oceanogr. (IF 3.8) Pub Date : 2024-05-04 S.L. Basedow, A.H.H. Renner, B. Espinasse, S. Falk-Petersen, M. Graeve, K. Bandara, K. Sørensen, K. Eiane, W. Hagen
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 (). A seasonal match or mismatch at the lower trophic levels (phytoplankton and zooplankton) is central in determining how much energy and biomass is available
-
Trophic interactions between common minke whales (Balaenoptera acutorostrata) and their prey during summer in the northern Barents Sea Prog. Oceanogr. (IF 3.8) Pub Date : 2024-05-03 T. Haug, M. Biuw, K.M. Kovacs, L. Lindblom, U. Lindstrøm, C. Lydersen, K.M. MacKenzie, S. Meier
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 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
-
Oceanographic factors determining the distribution of nutrients and primary production in the subpolar Southern Ocean Prog. Oceanogr. (IF 3.8) Pub Date : 2024-04-27 Manami Tozawa, Daiki Nomura, Kaihe Yamazaki, Masaaki Kiuchi, Daisuke Hirano, Shigeru Aoki, Hiroko Sasaki, Hiroto Murase
To investigate the spatial distributions and determinants of nutrient concentrations, we measured NO+NO, PO, and Si(OH) 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
-
Modeling the larval dispersal and connectivity of Red Snapper (Lutjanus campechanus) in the Northern Gulf of Mexico Prog. Oceanogr. (IF 3.8) Pub Date : 2024-04-16 Xing Zhou, Luisa Lopera, Adela Roa-Varón, Annalisa Bracco
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
-
The Rio Grande Rise circulation: Dynamics of an internal tide conversion hotspot in the Southwestern Atlantic Prog. Oceanogr. (IF 3.8) Pub Date : 2024-04-15 Pedro W.M. Souza-Neto, Ilson C.A. da Silveira, Cesar B. Rocha, Cauê Z. Lazaneo, Paulo H.R. Calil
The Rio Grande Rise (RGR) is a plateau located at 31°S in the Southwestern Atlantic, rising from 5916m up to 161m 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
-
Experimental construction of eddy real-time structure based on gradient-dependent OI in the Kuroshio-Oyashio confluence region Prog. Oceanogr. (IF 3.8) Pub Date : 2024-04-15 Mengli Zhang, Chunling Zhang, Kefeng Mao, Xing Liu, Zhizu Wang
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
-
Vertical and latitudinal distribution of bottom-up and top-down controls of heterotrophic prokaryotes in the Red Sea Prog. Oceanogr. (IF 3.8) Pub Date : 2024-04-13 Eman I. Sabbagh, Maria Ll. Calleja, Tamara M. Huete-Stauffer, Daniele Daffonchio, Xosé Anxelu G. Morán
Heterotrophic prokaryotes (HPs) represent the largest fraction of living biomass in the ocean. Comprehensively understanding the spatio-temporal variability of their controlling factors remains a challenge in microbial oceanography, especially in little explored low latitude regions such as the Red Sea, one of the hottest and saltiest basins on Earth. In this study, we assessed the vertical (5–1000 m)
-
Potential impacts of offshore wind energy development on physical processes and scallop larval dispersal over the US Northeast shelf Prog. Oceanogr. (IF 3.8) Pub Date : 2024-04-13 Changsheng Chen, Liuzhi Zhao, Huichan Lin, Pingguo He, Siqi Li, Zhongxiang Wu, Jianhua Qi, Qichun Xu, Kevin Stokesbury, Lu Wang
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
-
Seasonal ventilation controls nitrous oxide emission in the NW Iberian upwelling Prog. Oceanogr. (IF 3.8) Pub Date : 2024-04-12 Mercedes de la Paz, Fiz F. Pérez, Marta Álvarez, Antonio Bode
-
Importance of microzooplankton for sustaining high mesozooplankton biomass during post-bloom period in the Oyashio region of the western subarctic Pacific Prog. Oceanogr. (IF 3.8) Pub Date : 2024-04-10 Mutsuo Ichinomiya, Yuichiro Nishibe, Yuji Okazaki, Mitsuhide Sato, Kazutaka Takahashi
We investigated the plankton community structure and biomass during the post-bloom season in the Oyashio region of the western subarctic Pacific, including pico-, nano-, microplankton and mesozooplankton. We found that the nitrate, phosphate and silicic acid concentrations remained high at >4.2 μM, >0.77 μM and >7.1 μM, respectively, in the euphotic layer at almost all sampling stations, but that the
-
Intraseasonal response of marine planktonic ecosystem to summertime Madden-Julian Oscillation in the South China Sea: A model study Prog. Oceanogr. (IF 3.8) Pub Date : 2024-04-07 Hengye Ren, Wenfang Lu, Wupeng Xiao, Qing Zhu, Canbo Xiao, Zhigang Lai
In summer, the Madden-Julian Oscillation (MJO) greatly influences the intraseasonal variability of the South China Sea (SCS). Previous studies have revealed MJO effects on surface chlorophyll (Chl) concentration, but the impact of the MJO on the ecosystem's structure and functionality remains unexplored. Here, we investigated the marine ecosystem response to the MJO by analyzing phytoplankton pigment
-
How uncertain and observable are marine ecosystem indicators in shelf seas? Prog. Oceanogr. (IF 3.8) Pub Date : 2024-03-29 Jozef Skákala, David Ford, Alison Fowler, Dan Lea, Matthew J. Martin, Stefano Ciavatta
Operational analysis and forecast products of shelf sea biogeochemistry often lack reliable information on uncertainty. This is problematic, as good quality uncertainty information is both requested by the product end-users and essential for data assimilation. To address this problem we developed a quality-assessed ensemble representation of many leading sources of uncertainty in a coupled marine