Article
Environmental Sciences
Ibrahim M. Ghandour, Aaid G. Al-Zubieri, Ali S. Basaham, Ammar A. Mannaa, Talha A. Al-Dubai, Brian G. Jones
Summary: This study used a shallow sediment core retrieved from the Red Sea coastal zone in northern Ghubbat al Mahasin, south of Al-Lith, Saudi Arabia, for reconstructing mid-Late Holocene paleoenvironments and sea level changes using a multiproxy approach. The core stratigraphy revealed three distinctive depositional units, indicating a warm and humid climate during the basal unit, a lagoonal or shallow marine environment during the middle unit, and an intertidal flat during the upper unit. The findings suggest a late Holocene sea-level fall and a shift to a more arid climate.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Geosciences, Multidisciplinary
Rodolfo Jose Angulo, Maria Cristina de Souza, Maria Luiza Correa da Camara Rosa, Eduardo G. Barboza, Guilherme Camargo Lessa, Luiz Carlos Ruiz Pessenda, Augusto Luiz Ferreira Junior
Summary: This study presents spatiotemporal paleo-sea-level reconstructions from Abrolhos archipelago and Abrolhos Bank, filling in a 500 km coastline gap. The data indicates sea levels up to 2.9 m higher than the current one between the Mid- to Late Holocene. There was little hydroisostatic compensation across the continental shelf between the archipelago and the mainland coast.
Article
Geosciences, Multidisciplinary
Guogang Li, Ruyuan Bu, Liang Yi, Bangqi Hu, Yunhai Li, Youjun Ji, Yixin Li, Liang Wang
Summary: This study focuses on the paleoceanographic research in the Ross Sea region of Antarctica. By analyzing a sediment sample, the sedimentation rate based on Th-230 isotopes is determined, and a large amount of ice-rafted debris is found in the sediments, suggesting an enhancement of these features in a warm climate. Additionally, this study observes the dominant role of biogenic processes in the ice sheet changes and establishes the correlation between regional paleoenvironmental processes and the temperature of the East Antarctic ice sheet.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
F. Caridi, A. Sabbatini, M. Bensi, V Kovacevic, R. G. Lucchi, C. Morigi, P. Povea, A. Negri
Summary: The study of benthic foraminifera in the Kveithola Trough revealed a diverse assemblage on the outer shelf, a disturbed area in the central part, and a stressed environment in the inner part. Cell Tracker Green (CTG) was found to be more effective than Rose Bengal (RB) for distinguishing between living and dead tests, and species distribution was influenced by geomorphological and environmental conditions in the area.
JOURNAL OF MARINE SYSTEMS
(2021)
Article
Geosciences, Multidisciplinary
Meryem Mojtahid, Magali Schweizer, Melanie Douarin, Justine Gabriel, Christophe Colin, Nadine Tisnerat-Laborde, Mary Elliot
Summary: Benthic foraminiferal assemblage data from a marine sediment core off northwest Scotland have provided insights into paleoenvironmental changes since the last glacial period and the environmental conditions that influenced the onset, formation, and decline of cold-water corals in the area. The study identified three distinct foraminiferal assemblages associated with different time intervals, indicating shifts in ecological conditions and water properties that allowed for the settlement of cold-water corals around 9,000 years ago. The presence of specific foraminiferal species also suggested varying contributions of water masses from the Eastern North Atlantic, influencing food export efficiency to the seafloor.
Article
Geosciences, Multidisciplinary
Jie Chen, Thomas Stevens, Taibao Yang, Mingrui Qiang, Gennady Matishov, Evgeny Konstantinov, Redzhep Kurbanov, Biao Zeng, Peihong Shi
Summary: This study presents a refined chronostratigraphy and a multiproxy record of Late Pleistocene environmental dynamics in the Azov Sea region. The results help to better understand the climatic trends and forcing mechanisms in the region and provide important implications for chronostratigraphic correlations and the reconstruction of Late Pleistocene climate.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Geography, Physical
Luigi Ferranti, Pierfrancesco Burrato, Daniele Sechi, Stefano Andreucci, Fabrizio Pepe, Vincenzo Pascucci
Summary: Mapping and luminescence aging of raised marine terraces and aeolian ridges along a 90 km coastal stretch in southwestern Sicily provide the first quantitative assessment of vertical tectonic deformation in this region. The results demonstrate that the uplift includes a regional component related to the involvement of thicker crustal portions of the northern African continental margin in the thrust belt, and a local component corresponding to actively growing bedrock folds.
QUATERNARY SCIENCE REVIEWS
(2021)
Article
Geography, Physical
Renato Pereira Lopes, Marcio Silva de Souza, Jamil Correa Pereira, Stela Valenti Raupp, Sonia Hatsue Tatumi, Marcio Yee, Sergio Rebello Dillenburg
Summary: The study analyzed samples from wetlands in the southern Brazilian coastal area and found a diverse assemblage of diatoms, indicating the importance of diatoms in understanding the formation and development of these wetlands. The presence of various diatom genera suggests a rich biodiversity and provides insights into the environmental changes that have influenced the southern Brazilian wetlands.
QUATERNARY INTERNATIONAL
(2021)
Article
Geography, Physical
Manisha Das, Raj K. Singh, Ann Holbourn, S. H. Farooq, Nishant Vats, D. K. Pandey
Summary: The study revealed significant changes in productivity in the Japan Sea during the Middle Pleistocene, mainly influenced by nutrient supply restrictions and the inflow of the Tsushima Warm Current. Variations in oxygen-tolerant species and total organic carbon influx also reflected changes in the marine environment to some extent.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2021)
Article
Marine & Freshwater Biology
Baichuan Duan, Tiegang Li, Linmiao Wang, Zhifang Xiong
Summary: The benthic foraminiferal assemblage in a drilled sediment core (LHSD-1) was studied to understand the offshore paleoenvironmental changes near the Shandong Peninsula during Holocene transgression. The results indicate that the early Holocene was characterized by an intertidal flat environment with Ammonia aomoriensis as the dominant species. Buccella frigida became dominant from 10.1 to 11.3 kyr BP, likely reflecting the strengthening of the Yellow Sea Coastal Current. Two rapid sea level rise events were detected, corresponding to MWP-1C and MWP-1D. The establishment of the current marine environment occurred around 4.6 kyr BP. The Holocene marine transgression had a significant impact on the paleoenvironmental changes near the Shandong Peninsula, although the high sedimentary rate balanced the rising sea levels.
JOURNAL OF SEA RESEARCH
(2023)
Article
Ecology
Wojciech Majewski, Witold Szczucinski, Andrew J. Gooday
Summary: Sub-Antarctic fjords in South Georgia were studied to understand the effect of climate change on living benthic foraminifera. Four distinct foraminiferal assemblages were identified, with Miliammina earlandi dominating in glacier-proximal habitats, Cassidulinoides aff. parkerianus in mid-fjord areas, and Globocassidulina aff. rossensis and an assemblage dominated by Ammobaculites rostratus, Reophax subfusiformis, and Astrononion echolsi in the outer fjords. Miliammina earlandi showed adaptability to glacial influence and high sedimentation rates, while C. aff. parkerianus was well-suited to inner-fjord conditions.
Article
Geography, Physical
Emilie A. Henry, Kira T. Lawrence, Laura C. Peterson, Marci M. Robinson
Summary: Global and regional reconstructions of past climate conditions often rely on sea surface temperature (SST) estimates from various proxies. This study compares two SST proxies, alkenone-derived SST and foraminiferal assemblage-based SST, and finds that they yield similar estimates for basic climate metrics. However, significant disparities between the two proxies exist for certain time periods, particularly during glacial and interglacial extrema.
QUATERNARY SCIENCE REVIEWS
(2022)
Article
Engineering, Marine
Anna Sabbatini, Matteo Bazzaro, Francesca Caridi, Cinzia De Vittor, Valentina Esposito, Renata Giulia Lucchi, Alessandra Negri, Caterina Morigi
Summary: The rapid response of benthic foraminifera to organic carbon flux to the seafloor makes them promising bioindicators for evaluating the organic carbon stored in marine sediments. Little is known about organic carbon-rich sediments in Arctic open shelves and their role in global carbon sequestration.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Geochemistry & Geophysics
Robert S. Feranec, Mario E. Cournoyer, Andrew L. Kozlowski
Summary: This study uses radiocarbon dating and stable isotope analyses on vertebrate specimens from the late Pleistocene to early Holocene Champlain Sea, focusing on the timing of colonization and ecological dynamics in this newly formed sea. The isotopic data reveal differences in prey consumption among different species, with some consuming prey from lower trophic levels and others consuming fish, similar to modern arctic marine ecosystems.
Article
Geosciences, Multidisciplinary
Adrian Lopez-Quiros, Francisco J. Lobo, Meghan Duffy, Amy Leventer, Dimitris Evangelinos, Carlota Escutia, Fernando Bohoyo
Summary: The study of sedimentation patterns in Ona Basin revealed significant changes driven by late Quaternary glacial-interglacial paleoclimatic and paleoceanographic variations. Through high-resolution sub-bottom profiles and gravity cores, researchers identified seismic units and sedimentary units, indicating shifts in depositional styles and regional bottom-current patterns.
