Article
Geosciences, Multidisciplinary
Yuki Ota, Masahiro Suzumura, Ayumi Tsukasaki, Atsushi Suzuki, Koji Seike, Jumpei Minatoya
Summary: Cobalt-rich ferromanganese crusts are found on seamount summits in the northwestern Pacific at depths of 1000 to 2500 m. The sedimentation rates at these summits are higher than those of the surrounding abyssal plain and are mainly composed of carbonate. This high sedimentation rate and weak bioturbation activity at the summit areas may be influenced by the differences in dissolved oxygen and particulate organic matter concentrations in the bottom water.
JOURNAL OF MARINE SYSTEMS
(2022)
Article
Multidisciplinary Sciences
Tanja Stratmann, Erik Simon-Lledo, Teresa Maria Morganti, Anna de Kluijver, Andrey Vedenin, Autun Purser
Summary: Seamounts are underwater mountains that are considered as hotspots of marine biodiversity. The study assessed the habitats and community composition of megabenthos (large organisms living on the seafloor) at three seamounts in the central Arctic Ocean. It was found that the majority of the seafloor on these seamounts was covered with bare rock, sponge mats, and detrital debris. The megabenthos assemblages were dominated by sponges and the composition varied among the seamounts. Factors such as habitat types and biogenic factors played a major role in shaping the benthic communities in these high-Arctic seamounts.
SCIENTIFIC REPORTS
(2022)
Article
Multidisciplinary Sciences
T. M. Morganti, B. M. Slaby, A. de Kluijver, K. Busch, U. Hentschel, J. J. Middelburg, H. Grotheer, G. Mollenhauer, J. Dannheim, H. T. Rapp, A. Purser, A. Boetius
Summary: This study reports the discovery of dense sponge gardens on extinct seamounts and remnants of a now extinct seep ecosystem. The study suggests that the sponges use refractory organic matter from the extinct seep community as their energy source. The findings highlight the uniqueness of this ecosystem and its association with the extinct seep biota.
NATURE COMMUNICATIONS
(2022)
Article
Multidisciplinary Sciences
Maria de los Angeles Gallardo Salamanca, Enrique Macpherson, Jan M. Tapia Guerra, Cynthia M. Asorey, Javier Sellanes
Summary: The new species of Munida diritas sp. nov. was discovered near Desventuradas Islands in Chile, characterized by distinct carinae on thoracic sternites. It lives among the tentacles of ceriantarid anemones and preys on small crustaceans. Its discovery highlights the importance of the newly created Nazca-Desventuradas Marine Park for marine conservation.
Article
Ecology
Jason Gronich, Adrienne Copeland, Michael Ford, Amanda N. Netburn
Summary: The mesopelagic region in the central North Pacific is home to a wide variety of organisms, but remains largely unexplored. NOAA conducted two expeditions to study this region, and found that the abundance of organisms was higher below and within the deep scattering layer (DSL) compared to above the DSL. These findings have important implications for marine conservation and research.
REGIONAL STUDIES IN MARINE SCIENCE
(2023)
Article
Oceanography
Rengaiyan Periasamy, Palayil John Kurian, Baban Ingole
Summary: This study reports on two new species of bamboo corals and their global distribution and complex body structure. It is important for assessing the long-term effects of massive sulphide mining in the Indian Ocean.
DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
(2023)
Article
Multidisciplinary Sciences
John Lynham
Summary: The evaluation of economic impacts of marine protected areas is limited by the lack of comparison with a control group. An analysis of the potential negative economic impacts of the Northeast Canyons and Seamounts Marine National Monument on three commercially important fisheries found little to no negative impact. The reopening of the protected area did not result in any economic benefits, consistent with the findings after closure.
SCIENTIFIC REPORTS
(2022)
Article
Environmental Sciences
Amelia E. H. Bridges, David K. A. Barnes, James B. Bell, Rebecca E. Ross, Kerry L. Howell
Summary: This study characterized the benthic assemblage composition of seamounts and oceanic islands in the South Atlantic Ocean, finding distinct differences between temperate and tropical regions, with latitude and depth identified as key environmental drivers. Faunal assemblages are similar to those observed in the North Atlantic in terms of functional groups.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Oceanography
Birte Gulk, Fabien Roquet, Alberto C. Naveira C. Garabato, Aditya Narayanan, Clement Rousset, Gurvan Madec
Summary: The region of Maud Rise in the Weddell Sea experiences irregular polynya openings during winter months. There is a warmer water mass below the mixed layer called the warm-water Halo, surrounding a colder region above the rise called the Taylor Cap. Observations show strong interannual variability in the temperature of deep waters in Maud Rise, with the Halo and Taylor Cap sometimes becoming indistinguishable. The variability in the Halo is mainly forced by advection of deep waters from the Weddell Gyre.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2023)
Article
Multidisciplinary Sciences
Sven Kerwath, Rouvay Roodt-Wilding, Toufiek Samaai, Henning Winker, Wendy West, Sheroma Surajnarayan, Belinda Swart, Aletta Bester-van der Merwe, Albrecht Gotz, Stephen Lamberth, Christopher Wilke
Summary: Phenotypic plasticity and genetic structure have been observed in widely distributed pelagic fish species, with shallow oceanic seamounts potentially acting as breeding populations with site-specific adaptations for species such as the yellowtail kingfish.
SCIENTIFIC REPORTS
(2021)
Article
Mechanics
N. Paldor, L. Friedland
Summary: By substituting angular momentum for zonal velocity, we analyze the dynamics of a water column at the ocean surface forced by zonal wind stress on the rotating spherical Earth. This results in a model of the column's trajectory as a quasiparticle in a time-dependent potential well. We derive explicit solutions for the temporal changes in angular momentum and the associated minima and oscillations of the potential well, which are confirmed by numerical solutions of the nonlinear differential equations.
Article
Environmental Sciences
Isaac Brito-Morales, David S. Schoeman, Jason D. Everett, Carissa J. Klein, Daniel C. Dunn, Jorge Garcia Molinos, Michael T. Burrows, Kristine Camille Buenafe, Rosa Mar Dominguez, Hugh P. Possingham, Anthony J. Richardson
Summary: Protecting the ocean from increasing threats requires the establishment of high-seas marine reserve networks that optimize biodiversity, minimize climate change exposure, and reduce fisheries conflict. A planning approach that considers data from different depth domains and climate scenarios has identified climate-smart conservation areas covering 6% of the high seas, serving as a nucleus for developing a comprehensive network of high-seas marine reserves.
NATURE CLIMATE CHANGE
(2022)
Article
Multidisciplinary Sciences
Vasco M. Worlitzer, Ajesh Jose, Ilana Grinberg, Markus Bar, Sebastian Heidenreich, Avigdor Eldar, Gil Ariel, Avraham Be'er
Summary: This study investigates the transition from swarming to biofilm formation in Bacillus subtilis and reveals the roles of both biological and physical processes in facilitating this transition. Individual cells initiate the formation of large aggregates, where cells continue swarming around the aggregates while trapped cells join the biofilm.
Article
Multidisciplinary Sciences
Lukas N. Groschner, Jonatan G. Malis, Birte Zuidinga, Alexander Borst
Summary: Nonlinear, multiplication-like operations carried out by individual nerve cells greatly enhance the computational power of a neural system. This study focuses on the Drosophila melanogaster ON motion vision circuit, where the researchers investigate the biophysical implementation of these operations. The findings reveal a passive supralinear interaction between two distinct types of synapse on T4 dendrites, which results in a multiplication-like nonlinearity.
Article
Marine & Freshwater Biology
Natsumi Hookabe, Naoto Jimi, Hiroyuki Yokooka, Shinji Tsuchida, Yoshihiro Fujiwara
Summary: A new species of Lacydonia, L. shohoensis sp. nov., was discovered in the Nishi-Shichito Ridge of the Northwest Pacific Ocean. It shares similarities with L. anapaulae, but can be distinguished by the dorsal pigmentation on the pygidium and equally elongated non-pigmented pygidial lateral cirri.
JOURNAL OF THE MARINE BIOLOGICAL ASSOCIATION OF THE UNITED KINGDOM
(2021)
Article
Multidisciplinary Sciences
Janus Larsen, Christian Mohn, Ane Pastor, Marie Maar
Article
Oceanography
Christian Mohn, Martin White, Anneke Denda, Svetlana Erofeeva, Barbara Springer, Robert Turnewitsch, Bernd Christiansen
Summary: The interaction between biophysical properties and hydrodynamic features at Senghor Seamount in the tropical Northeast Atlantic was investigated, revealing complex and varied flow phenomena at different temporal and spatial scales. The seamount is exposed to energetic mesoscale eddy activity in surrounding waters, potentially leading to large physical and biological implications.
DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
(2021)
Article
Marine & Freshwater Biology
Marie Maar, Janus Larsen, Camille Saurel, Christian Mohn, Jens Murawski, Jens Kjerulf Petersen
Summary: Transplanting blue mussels from hypoxic donor areas to more suitable growth areas can mitigate hypoxia in eutrophic estuaries, prevent mass mortalities, and reduce negative environmental impacts.
Article
Environmental Sciences
Jens Murawski, Jun She, Christian Mohn, Vilnis Frishfelds, Jacob Woge Nielsen
Summary: Coastal zones are dynamic environments requiring adaptive water management for balancing economic and social interests with environmental concerns. High-quality marine data and operational models with high resolution are essential for decision-making processes. The study on the Limfjord highlights the importance of computational efficiency, improved radiation scheme, high-resolution atmospheric forcing, accurate bathymetry, and river forcing for successful modeling of coastal-estuary systems. The HBM model demonstrates adequate performance for sea level, salinity, and temperature predictions, suitable for storm surge warning and coastal management applications.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Oceanography
Anna-Selma Van der Kaaden, Christian Mohn, Theo Gerkema, Sandra R. Maier, Evert de Froe, Johan van de Koppel, Max Rietkerk, Karline Soetaert, Dick van Oevelen
Summary: The study found that increasing mound height led to higher horizontal velocities but lower turbulent energy dissipation and vertical velocities around the foot of the mound, limiting coral growth in later stages. However, increased turbulent energy dissipation and vertical velocities on the mound top and upper flanks indicated continued vertical growth of the mounds.
DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
(2021)
Article
Environmental Sciences
Vibe Schourup-Kristensen, Marie Maar, Janus Larsen, Christian Mohn, Jens Murawski, Jun She, Hans H. Jakobsen
Summary: European legislation mandates the monitoring of toxic algae in marine areas where shellfish are harvested for consumption. This study introduces a methodology to divide coastal and estuarine waters into homogeneous bodies for monitoring toxic algae, based on water transport and oceanographic characteristics. The proposed method has been successfully applied in areas with complicated coastal morphology, making it adaptable to other estuarine and coastal regions where toxic algae monitoring is required.
MARINE POLLUTION BULLETIN
(2021)
Article
Ecology
Telmo Morato, Carlos Dominguez-Carrio, Christian Mohn, Oscar Ocana Vicente, Manuela Ramos, Luis Rodrigues, Iris Sampaio, Gerald H. Taranto, Laurence Fauconnet, Ines Tojeira, Emanuel J. Goncalves, Marina Carreiro-Silva
Summary: The discovery of a dense, near-natural, and novel octocoral garden on the slopes of the Mid-Atlantic Ridge at depths of 545-595 meters, which meets FAO criteria for Vulnerable Marine Ecosystems, provides new insights into the functioning of mid-ocean ridges' ecosystems. The presence of biogenic and geological topographies associated with mid-ocean ridges suggests their global importance for deep-sea biodiversity. Further research is needed to better understand the processes involved and narrow knowledge gaps regarding biophysical connections with benthic fauna at small spatial scales along mid-ocean ridges.
ECOLOGY AND EVOLUTION
(2021)
Correction
Oceanography
[Anonymous]
DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
(2022)
Letter
Multidisciplinary Sciences
Sergio Rossi, Lorenzo Bramanti, Paulo Horta, Louise Allcock, Marina Carreiro-Silva, Martina Coppari, Vianney Denis, Louis Hadjioannou, Enrique Isla, Carlos Jimenez, Mark Johnson, Christian Mohn, Covadonga Orejas, Andreja Ramsak, James Reimer, Baruch Rinkevich, Lucia Rizzo, Maria Salomidi, Toufiek Samaai, Nadine Schubert, Marcelo Soares, Ruth H. Thurstan, Paolo Vassallo, Patrizia Ziveri, Juanita Zorrilla-Pujana
Article
Environmental Studies
P. P. E. Weaver, J. Aguzzi, R. E. Boschen-Rose, A. Colaco, H. de Stigter, S. Gollner, M. Haeckel, C. Hauton, R. Helmons, D. O. B. Jones, H. Lily, N. C. Mestre, C. Mohn, L. Thomsen
Summary: Deep-sea mining, particularly the mining of polymetallic nodules, is likely to have both positive aspects such as increasing metal supply for battery production, and negative aspects such as large-scale environmental impacts. This article discusses the potential impacts of sediment plumes generated by mining vehicles near the seabed, as well as methods for measuring and comparing different mining vehicles. The findings of this study will assist the International Seabed Authority in regulating deep-sea mining activities and promoting the use of best available technology and environmental practices.
Article
Oceanography
Evert de Froe, Sandra R. Maier, Henriette G. Horn, George A. Wolff, Sabena Blackbird, Christian Mohn, Mads Schultz, Anna-Selma van der Kaaden, Chiu H. Cheng, Evi Wubben, Britt van Haastregt, Eva Friis Moller, Marc Lavaleye, Karline Soetaert, Gert-Jan Reichart, Dick van Oevelen
Summary: This study examines the distribution of organic matter under tidal activity in a transect on the south-eastern slope of Rockall Bank in the Northeast Atlantic Ocean. Results show that the water column above the coral mound is more dynamic, with high variability in physical parameters and nutrient concentrations in the bottom water. A diurnal tidal wave replenishes nutrients in the surface water, while an internal wave is recorded above the coral mound. The benthic community feeds on various food sources, including phytodetritus and zooplankton.
DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
(2022)
Article
Geosciences, Multidisciplinary
Sabine Haalboom, Henko C. de Stigter, Christian Mohn, Thomas Vandorpe, Marck Smit, Laurens de Jonge, Gert-Jan Reichart
Summary: This study presents different experimental designs for monitoring sediment plumes produced by deep-sea mining. Two field tests were conducted in a shallow setting offshore southern Spain using the Apollo II mining vehicle. The tests provided valuable insights for monitoring nodule mining in the deep Pacific. The plume of suspended sediment was monitored using turbidity sensors deployed on a ship-operated CTD system and on a static array of moored sensors, as well as visually with a ship-operated ROV. The results showed the distribution and behavior of the sediment plume and provided recommendations for monitoring in deep-sea conditions.
Review
Oceanography
Christian Mohn, Jorgen L. S. Hansen, Marina Carreiro-Silva, Stuart A. Cunningham, Evert de Froe, Carlos Dominguez-Carrio, Stefan Gary, Ronnie N. Glud, Cordula Goke, Clare Johnson, Telmo Morato, Eva Friis Moller, Lorenzo Rovelli, Kirstin Schulzi, Karline Soetaert, Anna van der Kaaden, Dick van Oevelen
Summary: Cold-water corals (CWCs) thrive in areas with complex and rough topography, but little is known about how basin-scale changes in the ocean climate affect their growth. In this study, high-resolution hydrodynamic models were used to investigate the impact of variations in basin-scale currents on local hydrodynamics and CWC communities. It was found that the variability of near-bottom currents and water mass properties at different AMOC states strongly influenced the CWC distribution. The kinetic energy dissipation rate was proposed as a mechanistic descriptor of CWC presence, providing insight into the hydrodynamics driving organic matter supply to these communities.
PROGRESS IN OCEANOGRAPHY
(2023)
Article
Oceanography
E. W. Willcox, J. Bendtsen, J. Mortensen, C. Mohn, M. Lemes, T. J. Pedersen, J. Holding, E. F. Moller, M. K. Sejr, M. S. Seidenkrantz, S. Rysgaard
Summary: This study presents a synoptic survey of the Northeast Greenland shelf and slope during late summer 2017, investigating hydrography, nutrients, conservative tracers, and climate factors. The results indicate that the Laptev Sea is a major freshwater source in the region during this period, and there is no conclusive evidence of Pacific Water. The observations suggest a direct link between Northeast Greenland hydrology and processes occurring on Eurasian shelves.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2023)
Article
Environmental Sciences
Caroline Bouchard, Julek Chawarski, Maxime Geoffroy, Apasiri Klasmeier, Eva Friis Moller, Christian Mohn, Mette Dalgaard Agersted
Summary: Arctic cod dominates the ichthyoplankton assemblages in the High Arctic seas, and the competition with other native species has rarely been studied. This study examines the resource partitioning and potential interspecific competition among Arctic cod and other species in the Greenland Sea. The findings suggest limited interspecific competition among the early life stages of Arctic fishes, although changing conditions and northward range expansion due to climate change could increase competition and negatively impact the recruitment of Arctic ichthyoplankton.
ELEMENTA-SCIENCE OF THE ANTHROPOCENE
(2022)