Article
Geography, Physical
Rokiah Suriadi, Hasrizal Shaari, Stephen J. Culver, Abdullah Sulaiman, Shouye Yang, Wan Nurzalia Wan Saelan, Fatin Izzati Minhat, Hamad Maalim Sharif
Summary: The history of Holocene sedimentation on the Sunda Shelf, particularly off Peninsular Malaysia, has been poorly studied. This study provides evidence of Holocene transgression in the inner shelf of Peninsular Malaysia based on lithologic and foraminiferal analyses of 24 cores. The results reveal the presence of coastal plain deposits from the earliest Holocene, as well as open marine deposits from the early Holocene and highstand systems tract.
QUATERNARY INTERNATIONAL
(2023)
Article
Environmental Sciences
Dharmendra Pratap Singh, Rajeev Saraswat, Rahul Pawar
Summary: This study examines the morphology of benthic foraminifera and its relationship with ambient environmental parameters in the southeastern Arabian Sea. The results show that different environmental conditions lead to variations in the morphology of benthic foraminifera, and they can be used as indicators for reconstructing paleoenvironments.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
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
Geosciences, Multidisciplinary
Geng Liu, Xibin Han, Yanping Chen, Jun Li, Lehui Song, Xin Zhou, Bangqi Hu, Liang Yi
Summary: This study investigates the influence of tropical cyclones on depositional processes in the South Yellow Sea. The results show that tropical cyclones have a significant impact on the sedimentary evolution of the area, and solar activity may control the intensity of tropical cyclones through strengthening the walker circulation over the tropical Pacific.
JOURNAL OF EARTH SCIENCE
(2022)
Article
Geology
Raquel Bryant, Kimberly C. Meehan, Christina L. Belanger
Summary: The methane cold seeps in the Cretaceous Western Interior Seaway played a significant role as food-rich habitats for macrofaunal communities, but the macrofaunal inhabitants were not endemic to seep environments. The study found that the benthic foraminiferal assemblages in the Western Interior Seaway differed between seep and non-seep environments, with seep assemblages being more similar to offshore assemblages.
CRETACEOUS RESEARCH
(2023)
Article
Environmental Sciences
Ling Qiao, Songyao Fan, Chengzhe Ren, Feng Gui, Tiejun Li, Anran Zhao, Zezheng Yan
Summary: This study used high-throughput sequencing to investigate the composition and diversity of benthic foraminifera communities in the Zhejiang coastal waters. The results showed moderate heavy metal contamination with higher ecological risks posed by cadmium and mercury. Cadmium, copper, and grain size were identified as key factors affecting the distribution and composition of active foraminiferal communities.
MARINE POLLUTION BULLETIN
(2022)
Article
Marine & Freshwater Biology
Koushik Saha, Prasanta Sanyal, Swarnadip Saha
Summary: Recent increases in sea level pose a major threat to coastal wetland ecosystems and their biodiversity. Changes in salinity conditions due to rising sea levels adversely affect vegetation communities and organic carbon content. The contribution of organic sources to salt marsh sediments is impacted by salinity, with vegetation contribution decreasing and tidal/marine water derived particulate organic matter (POM) contribution increasing as salinity increases. Salinity is the main determining factor for both marshland vegetation development and their contribution to organic carbon.
ESTUARINE COASTAL AND SHELF SCIENCE
(2022)
Article
Environmental Sciences
Ye Lyu, Hao Xu, Michael E. Meadows, Zhanghua Wang
Summary: This study examines the sediment cores from the Ningbo Plain to understand the infilling history of the palaeo-Ningbo Bay and its connection to Neolithic occupation. The study reveals that the palaeo-bay was an intertidal to subtidal environment during the early to mid-Holocene, with two major marine transgression events occurring around 8.8 and 7.6 thousand years ago. The emergence of the Hemudu culture is associated with the infilling and coastal marsh development in the palaeo-Ningbo Bay after 7.0 thousand years ago.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Multidisciplinary Sciences
Olivier Cartapanis, Lukas Jonkers, Paola Moffa-Sanchez, Samuel L. Jaccard, Anne de Vernal
Summary: Analysis of a large database of Holocene temperature time series challenges the concept of a globally synchronous Holocene Thermal Maximum. The discrepancies between climate reconstructions and model simulations highlight the need for reevaluation of climate models and proxy temperature records. The heterogeneous response to climate forcing indicates the lack of globally synchronous HTM.
NATURE COMMUNICATIONS
(2022)
Article
Geography, Physical
Victor M. Giraldo-Gomez, Maria Rose Petrizzo, Gabriele Gambacorta, Cinzia Bottini, Silvia E. Gilardoni, Elisabetta Erba
Summary: The benthic foraminiferal assemblages from the Scaglia Bianca Formation in Italy provide a detailed record of faunal changes during the Oceanic Anoxic Event 1d (OAE 1d). Integration of different proxies allows reconstruction of water conditions during this event. Prior to OAE 1d, stable mesotrophic conditions were observed. During OAE 1d, there was an increase in infaunal taxa suggesting mesotrophic conditions and hypoxic/anoxic conditions in bottom waters. After OAE 1d, there was a restoration of oxygen conditions and continued mesotrophic regime in bottom waters.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Gerhard Schmiedl, Yvonne Milker, Andreas Mackensen
Summary: The biodiversity of deep-sea ecosystems is influenced by climate changes and resource availability. The diversity and species composition of benthic foraminifera serve as indicators of these changes. Highly diverse deep-sea ecosystems are more resilient to disturbances, while oligotrophic and well-ventilated ecosystems experience lower diversity due to seasonal pulses of phytodetritus.
EARTH-SCIENCE REVIEWS
(2023)
Article
Environmental Sciences
Yoshiyuki Ishitani, Caterina Ciacci, Yurika Ujiie, Akihiro Tame, Mattia Tiboni, Goro Tanifuji, Yuji Inagaki, Fabrizio Frontalini
Summary: Titanium dioxide nanoparticles (NPs) have diverse applications and are increasingly being used as an alternative to banned sunscreen filters. However, little is known about their toxicity mechanisms. This study investigates the cytotoxicity and detoxification mechanism of TiO2 NPs in marine benthic foraminifers. The findings reveal that the foraminifers can tolerate the toxicity of TiO2 NPs and prevent their further uptake by trapping them inside mucus. This previously unknown strategy could be useful for bioremediation and managing TiO2 pollution.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Jacque N. Cresswell, Peter J. van Hengstum
Summary: The benthic meiofaunal communities in Bermudian underwater caves are primarily controlled by changes in groundwater salinity, but are also influenced by changes in the source and quantity of particle organic carbon (POC) deposited in the caves.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Geography, Physical
Marta Szczesniak, Mikolaj Kokocinski, Robert Jagodzinski, Krzysztof Pleskot, Marek Zajaczkowski, Witold Szczucinski
Summary: During the 2010 flood of the Vistula River, a thin layer of medium-grained sand deposits extended up to 70 km into the Gulf of Gdańsk (Baltic Sea). The study aimed to identify flood indicators and reveal paleoflood records in sediment cores from the Gulf of Gdańsk. Analysis of surface samples and sediment cores showed that large flood deposits were not preserved after a year in water depth less than 30 m, while deeper cores consisted of sandy mud with unimodal and occasionally bimodal grain size distributions. Diatom analysis supported the interpretation of certain layers as deposited during river flood events. Evaluation of major flood events in the past was challenging due to changes in river mouth positions.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2023)
Article
Microbiology
Iines S. Salonen, Panagiota-Myrsini Chronopoulou, Hidetaka Nomaki, Dewi Langlet, Masashi Tsuchiya, Karoliina A. Koho
Summary: Foraminifera are unicellular eukaryotes that play a vital role in benthic fauna in marine ecosystems, with specific microhabitat preferences that are linked to sediment characteristics. Despite their ecological importance, the microbiome composition and diversity of foraminifera remain poorly understood. A study using 16S rRNA gene metabarcoding revealed distinct microbiomes for different foraminiferal species, indicating potential symbiotic relationships with specific bacterial groups that have been overlooked. This study highlights the potential of metabarcoding in unraveling the microbiome of eukaryotic unicellular organisms and providing unique insights into deep-sea ecosystems.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Geology
Marcello Gugliotta, Yoshiki Saito, Thi Kim Oanh Ta, Van Lap Nguyen, Andrew D. La Croix, Zhanghua Wang, Toru Tamura, Rei Nakashima, Kim Phuong Lieu
Summary: By analyzing a core dataset from the Ba Lai palaeochannel in the Mekong River Delta, this study identified and interpreted nine sedimentary facies, revealing the evolution history and sedimentation processes of the channel. The findings provide important information for better understanding tide-dominated deltaic systems and improving their interpretation in the geological record.
Article
Geosciences, Multidisciplinary
Xiao Wu, Houjie Wang, Yoshiki Saito, Jaia Syvitski, Naishuang Bi, Zuosheng Yang, Jingping Xu, Weibing Guan
Summary: Global deltas are at risk of being submerged due to a decrease in river-derived sediment. Increasing riverine sediment supply can save deltas, but it must exceed opposing forces. The release of an artificial flood from the Xiaolangdi Reservoir in China replenished sediment and created new land.
Article
Geography, Physical
S. Qiaola, T. M. L. Nguyen, T. K. O. Ta, V. L. Nguyen, M. Gugliotta, Y. Saito, H. Kitagawa, R. Nakashima, T. Tamura
Summary: This study examines the applicability of optically-stimulated luminescence (OSL) dating to wave-dominated deltas and proposes comparing different luminescence signals as an effective method to check the reliability of age estimates in environments where sunlight bleaching is not ensured.
QUATERNARY GEOCHRONOLOGY
(2022)
Article
Environmental Sciences
Yu Ma, Yoshiki Saito, Thi Kim Oanh Ta, Yue Li, Qinglu Yao, Chao Yang, Van Lap Nguyen, Marcello Gugliotta, Zhanghua Wang, Ling Chen
Summary: Limited information is available about organophosphate esters (OPEs) in sediments of the Dong Nai River System in Vietnam and the study found that human activities and fluvial-tidal interactions significantly influence the distribution of OPEs.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Multidisciplinary Sciences
Xin Wang, Gang Hu, Yoshiki Saito, Guanzhong Ni, Han Hu, Ziying Yu, Jingping Chen, Mi Wang, Xiaoping Yuan, Lei Wang, Zhenbo Hu, Junsheng Nie, Baotian Pan
Summary: The study reveals that the modern Yellow River was formed approximately 1.25 million years ago, which is consistent with the beginning of the Mid-Pleistocene transition. The accelerated lowering of sea level may have played an important role in the birth and evolution of the Yellow River, similar to tectonism.
Review
Geography, Physical
Jaia Syvitski, Edward Anthony, Yoshiki Saito, Florin Zainescu, John Day, Janok P. Bhattacharya, Liviu Giosan
Summary: Deltas are subaerial landforms formed by rivers depositing sediment into standing bodies of water. They are environmentally complex and influenced by natural conditions, sediment input, redistribution processes, and human actions. Deltas play a significant role in terms of their size, ecological importance, and human population.
GLOBAL AND PLANETARY CHANGE
(2022)
Article
Geosciences, Multidisciplinary
Lina Ai, Zongzhu Han, Xiao Wu, Shengfa Liu, Naishuang Bi, Yoshiki Saito, Xuefa Shi, Houjie Wang
Summary: This study provides insights into the environmental and climate changes in the Central Yellow Sea Mud (CYSM) during the Holocene. The contributions of the Yellow River and Yangtze River to the CYSM sedimentation varied over time, with sea level rise, weakened East Asian Summer Monsoon, and human activities playing key roles in sediment transport and accumulation.
JOURNAL OF ASIAN EARTH SCIENCES
(2022)
Article
Geosciences, Multidisciplinary
Xuanqi Zhao, Weiguo Zhang, Feng Wang, Quang Lan Vu, Yoshiki Saito
Summary: In this study, the sediment provenance changes in the Red River Delta, Vietnam, during the Holocene were inferred through magnetic measurement, particle size analysis, diffuse reflectance spectroscopy (DRS), and geochemical analyses. The results showed that Holocene climate change and human activities have led to variations in sediment composition. The magnetic properties, together with DRS analysis, provided insights into paleoclimate and paleoenvironmental changes in deltaic environments.
Article
Geography, Physical
Bing Song, Zhen Li, Limi Mao, Yoshiki Saito, Xiangdong Yang, Shixiong Yang
Summary: This study presents vegetation succession and climate change during 9.2-8.0 cal kyr BP based on sub-decennial scale pollen data, revealing two cold and dry events at 8.5 ka and 8.2 ka.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2023)
Article
Environmental Sciences
Ruihe Jin, Yue Li, Yoshiki Saito, Zhanghua Wang, Thi Kim Oanh Ta, Van Lap Nguyen, Jing Yang, Min Liu, Yan Wu
Summary: This study investigated the spatial distribution of 15 Amino accelerators and antioxidants (AAL/Os) and 5 AAO transformation products (AAOTPs) in sediments from the Dong Nai River System (DNRS) in Vietnam. The results showed higher levels of these compounds in downstream and primary tributary sediments, suggesting their cumulative sedimentation towards the estuarine region. The characteristics of the sediments, such as total organic carbon (TOC) content and grain sizes, were significantly correlated with the burdens of these compounds, indicating their preferential partitioning into fine and TOC-rich matter. This research provides valuable insights into the environmental behavior of AAL/Os and AAOTPs in Asian aquatic systems and highlights the need for further evaluation of their impacts on wildlife and public health.
ENVIRONMENTAL RESEARCH
(2023)
Article
Geography, Physical
Martin J. Head, Colin N. Waters, Jan A. Zalasiewicz, Anthony D. Barnosky, Simon D. Turner, Alejandro Cearreta, Reinhold Leinfelder, Francine M. G. McCarthy, Daniel de B. Richter, Neil L. Rose, Yoshiki Saito, Davor Vidas, Michael Wagreich, Yongming Han, Colin P. SumMerhayes, Mark Williams, Jens Zinke
JOURNAL OF QUATERNARY SCIENCE
(2023)
Article
Geosciences, Multidisciplinary
Jian Liu, Jiandong Qiu, Yoshiki Saito, Xin Zhang, Hong Wang, Feifei Wang, Lilei Chen, Gang Xu, Bin Chen, Meina Li, Yuhui An
Summary: This study provides new insights into the formation of the Holocene mud wedge along the Zhejiang-Fujian coast in East China Sea. The researchers conducted an integrated analysis of seismic profiles and borehole cores to understand the sedimentary evolution of the area since the Late Pleistocene. The study identified five major seismic units and various subunits, providing new understanding of the paleoenvironmental and paleogeographic evolution of the coastal area.
Article
Geography, Physical
Yuhui An, Xiuli Feng, Jian Liu, Yoshiki Saito, Jiandong Qiu, Xin Zhang, Hong Wang, Lilei Chen
Summary: The northern Jiangsu coastal zone (NJCZ) has developed multi-stage deltas and clinoforms due to the discharge of the Yellow and Yangtze rivers and the Huaihe River. An old clinoform, located below the old Yellow River delta (OYRD), has been studied to understand its evolution. The study used various analyses, including dating techniques, grain size measurements, isotopic analysis, and identification of sedimentary organisms.
Article
Geology
Yuanyuan Chen, Bing Deng, Yoshiki Saito, Zhanghua Wang, Xiaoqiang Yang, Jiaxue Wu
Summary: High-resolution seismic data were used to study the Holocene sedimentary evolution of the Pearl River delta-estuary-shelf system. A subaqueous clinoform developed in the Holocene over the pre-Holocene incised channel/valley network. The highstand sediment displayed asymmetric accumulation within 30 m water depths, with a thicker depocenter located in western Lingdingyang Bay.
Article
Geography, Physical
Xishuang Li, Yuexia Zhao, Zuosheng Yang, Shuqing Qiao, Baohua Liu, Qiuhong Xie, Yoshiki Saito, Chenguang Liu
Summary: This study estimates the thickness and sediment budget of Holocene marine deposits in the Bohai Sea using high-resolution subbottom profiles. The average thickness of Holocene marine deposits in the Bohai Sea is approximately 7.8 m, with a maximum thickness of 28 m in Jinzhou Bay. Three deposit centers were identified, accounting for approximately 42% of the total Bohai Sea sediments.