Article
Oceanography
Xingliang Jiang, Changming Dong, Yuxiang Ji, Chunsheng Wang, Yeqiang Shu, Lingxiao Liu, Jinlin Ji
Summary: The study demonstrates that seamounts significantly impact the hydrodynamic environment of the ocean, increasing flow complexity, enhancing vorticity and eddy activity. Various physical processes such as negative vorticity, density fronts, topographic Rossby waves, seamount-eddy interactions, and lee waves are observed around the three seamounts. These processes contribute to enhanced biological connectivity among seamounts.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2021)
Article
Environmental Sciences
Anabel von Jackowski, Maren Walter, Timo Spiegel, Pier Luigi Buttigieg, Massimiliano Molari
Summary: This study investigated the microbial communities in the water column and sediments of the ice-covered Arctic ridge system called the Langseth Ridge. The findings suggest that sponges on the seafloor play a significant role in pelagic-benthic coupling and act as ecosystem engineers.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Geochemistry & Geophysics
Xun Wei, Xue-Fa Shi, Yi-Gang Xu, Paterno R. Castillo, Yan Zhang, Le Zhang, Hui Zhang
Summary: The geochemical and isotopic analysis of lavas from the Southern Wake seamount trail suggest a derivation from partial melting of secondary plume clusters emanating from the top of the Arago mantle plume. Another possibility is that the lavas could have originated from secondary plumelets associated with the Pacific Large Low Shear Velocity Province (LLSVP). The lavas show signatures of FOZO-HIMU-like isotopic compositions, falling within the Arago hotspot field.
Article
Environmental Sciences
Savannah L. Goode, Ashley A. Rowden, David A. Bowden, Malcolm R. Clark, Fabrice Stephenson
Summary: Seamounts are common features of the deep seafloor that host a variety of mega-epibenthic fauna, and also support abundant fish stocks. Bottom trawl fisheries impact non-target benthic species on seamounts, making it important to understand environmental drivers affecting benthic communities for habitat mapping improvements and recovery potential assessments. Fine-scale community dynamics and community patch characteristics vary within and between seamounts, influencing spatial management approaches.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Geochemistry & Geophysics
Davide Gamboa, Rachid Omira, Aldina Piedade, Pedro Terrinha, Cristina Roque, Nevio Zitellini
Summary: Seamounts are spectacular bathymetric features common within volcanic and tectonically active continental margins, evolving through stages of construction and destruction in their lifecycles. Variations in the characteristics of Mass-Transport Deposits (MTDs) between the Miocene and Pliocene-Quaternary stages of seamounts are driven by tectonic rejuvenation, essential for maintaining and evolving seamount morphology.
EARTH AND PLANETARY SCIENCE LETTERS
(2021)
Article
Geochemistry & Geophysics
Edoardo Barbero, Federica Zaccarini, Morteza Delavari, Asghar Dolati, Emilio Saccani, Michele Marroni, Luca Pandolfi
Summary: The Durkan Complex in the Makran Accretionary Prism can be distinguished into two main rock groups based on whole rock and clinopyroxene chemical data, with one group showing transitional affinity and the other displaying within-plate oceanic island basalt compositions. These alkaline rocks were likely formed from the partial melting of a depleted sub-oceanic mantle source metasomatized by OIB-type chemical components in a within-plate oceanic setting, possibly related to a Late Cretaceous mantle plume activity.
Article
Geochemistry & Geophysics
Sepideh Pajang, Mohammad Mahdi Khatib, Mahmoudreza Heyhat, Nadaya Cubas, Eloise Bessiere, Jean Letouzey, Mohammad Mokhtari, Laetitia Le Pourhiet
Summary: This study investigates the relationship between deep structures and topographic slope using thermo-mechanical simulations. The results show that seamount subduction, changes in rock strength, and dehydration reactions significantly affect the topography and tectonic structures. The study proposes two onshore-offshore cross-sections of the Iranian Makran accretionary prism.
Article
Oceanography
Astrid B. Leitner, Jennifer M. Durden, Craig R. Smith, Eric D. Klingberg, Jeffrey C. Drazen
Summary: Observations from three abyssal seamount summits in the equatorial Pacific challenge the idea of a food-limited habitat with low numbers of megafauna, particularly fishes. The discovery of over 100 synaphobranchid eels feeding on standard bait at one seamount suggests a potential abyssal 'seamount effect' that may be important in structuring abyssal communities. This finding highlights the significance of seamounts in deep-sea ecosystems.
DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
(2021)
Article
Engineering, Environmental
Duoqiang Pan, Xiaodong Zhao, Peng Wang, Ping Li, Yuhong Li, Wangsuo Wu, Zheming Wang, Qiaohui Fan
Summary: In this study, the sorption speciation of U(VI) at the phlogopite/water interface was investigated using batch sorption experiments, time-resolved luminescence spectroscopy, and theoretical calculation. The results showed that pH strongly influenced the sorption of U(VI) on phlogopite, while ionic strength had a weak effect. Multiple inner-sphere surface species were formed at the interface, and their abundances varied with pH. The formation of uranyl oxyhydroxides was observed at high pH. Density functional theory calculation indicated that a bidentate complex was the most favorable sorption configuration for U(VI) at acidic condition. The temperature had an enhancing effect on U(VI) sorption, but this effect was reversible.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Ecology
Yuri Kimura, Lawrence J. Flynn, Louis L. Jacobs
Summary: Fossil records provide information about extinct taxa and rates of evolution across millions of years, but normally do not address details of lineage microevolution due to insufficient sampling density. This study focuses on a splitting event in the evolution of murine rodents, using multiple fossil samples to document the tempo and mode of origin of sister species. The analysis suggests that the tempo of splitting evolution in some cases may be measured in hundreds of thousands of years, followed by stasis once daughter species have morphologically differentiated.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2021)
Article
Marine & Freshwater Biology
Gabriele La Mesa, Ivan Consalvo, Michela Angiolillo, Michela Giusti, Leonardo Tunesi
Summary: Fish assemblages inhabiting a complex of south Tyrrhenian seamounts and banks were characterized using a remotely operated vehicle (ROV). Differences in species composition, abundance, and distribution patterns were observed between different sites and depth zones. The occurrence of some threatened elasmobranchs and evidence of heavy fishing activities highlight the importance of conservation measures. The inclusion of these seamounts and banks in the Natura 2000 network is recommended.
JOURNAL OF THE MARINE BIOLOGICAL ASSOCIATION OF THE UNITED KINGDOM
(2021)
Article
Limnology
Yang Li, Zifeng Zhan, Kuidong Xu
Summary: Sea pens are a specialized group of octocorallians, with two new species described in this study from the tropical Western Pacific. Alloptilella splendida is similar to the recently resurrected genus Ptilella but differs in certain characteristics, while Scytalium veneris has been resurrected as a distinct species. Genetic and phylogenetic analysis reveal insights into the relationships between these sea pens and their taxonomic classification.
JOURNAL OF OCEANOLOGY AND LIMNOLOGY
(2021)
Article
Veterinary Sciences
Gaetano Cammilleri, Stefano D'Amelio, Vincenzo Ferrantelli, Antonella Costa, Maria Drussilla Buscemi, Annamaria Castello, Emanuela Bacchi, Elisa Goffredo, Maria Emanuela Mancini, Serena Cavallero
Summary: Four dead Phalacrocorax carbo sinensis specimens from Southern Italy coasts were examined for the presence of Contracaecum sp. A total of 181 Contracaecum specimens, including larvae and adults, were found in the examined specimens. Contracaecum rudolphii A and B were detected, with a co-infestation of both in one of the specimens from Leporano Bay. This study provides the first report of Contracaecum sp. presence in P. carbo sinensis from Southern Italy.
VETERINARY SCIENCES
(2023)
Article
Environmental Sciences
Yang-Guang Gu, Yasu Wang, Jun Ouyang, Richard W. Jordan, Shijun Jiang
Summary: The study found that organic phosphorus is the dominant phosphorus species in the coastal area near Nan'ao Island, with terrestrial organic matter being an important carbon source for Shen'ao Bay. The lack of change in exchangeable or loosely sorbed P and organic P in the area around core S1 since the 2000s may be attributable to large-scale seaweed cultivation.
MARINE POLLUTION BULLETIN
(2021)
Article
Environmental Sciences
Santiago Herrera, William W. W. Chadwick, Matthew G. G. Jackson, Jasper Konter, Luke McCartin, Nicole Pittoors, Emily Bushta, Susan G. Merle
Summary: Volcanic eruptions provide rare opportunities to observe the recolonization of areas covered by new lava flows, resetting the ecological succession clock to zero. This study examines the role of submarine volcanic eruptions as disturbance events and their impact on ecological succession in non-vent ecosystems, particularly on seamounts. The research focuses on the early stages of ecological succession in the summit caldera of the Vailulu'u submarine volcano in American Samoa.
FRONTIERS IN MARINE SCIENCE
(2023)
