Article
Geosciences, Multidisciplinary
Xiaotong Tang, B. David A. Naafs, Richard D. Pancost, Zhao Liu, Tongyu Fan, Yanhong Zheng
Summary: Unusual H-Shaped branched and isoprenoidal glycerol monoalkyl glycerol tetraethers (GMGTs, or H-GDGTs) have been found in peat, lake, and ocean sediments. Relationship between the abundance of H-GDGTs relative to regular GDGTs and temperature, however, has not been widely explored. Results from peat cores in northeastern China show that high relative abundances of H-brGDGTs are associated with high temperatures, while high relative abundances of H-isoGDGTs are generally associated with low temperatures. These findings are partly inconsistent with observations from a modern global peat database.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Environmental Sciences
Yuichi Horii, Nobutoshi Ohtsuka, Takahiro Nishino, Keisuke Kuroda, Yoshitaka Imaizumi, Takeo Sakurai
Summary: This study investigated the distribution, mass profiles, and benthic risk assessment of methylsiloxanes in sediments from Tokyo Bay. The results showed the widespread presence of methylsiloxanes in the sediment samples, but the risk assessment indicated low threat to benthic organisms.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Green & Sustainable Science & Technology
Ruiqi Bao, Zezheng Wang, Huaiyuan Qi, Tariq Mehmood, Minggang Cai, Yumeng Zhang, Runlan Yang, Licheng Peng, Fengjiao Liu
Summary: This study investigates the removal efficiency of microplastics in a tropical urban wastewater treatment plant during dry and rainy periods. The results reveal that the secondary treatment step is able to effectively remove a majority of the microplastics, with higher concentrations observed in the effluent during the rainy period. Strategies for controlling microplastic pollution in wastewater treatment plants are suggested based on the findings of this study.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Environmental Sciences
Fatin Izzati Minhat, Suresh M. Ghandhi, Nurul Syahirah Mohd Ahzan, Norizmaira Abdul Haq, Omar Abdul Rahman Abdul Manaf, Shinazamreena Mhd Sabohi, Lee Hin Lee, Mohd Fadzil Akhir, Maizah Mohd Abdullah
Summary: The study collected surface samples of benthic foraminifera in the northern Strait of Malacca and found that the distribution was dominated by calcareous hyaline species, with water depth having a greater influence on foraminifera distribution than organic matter and salinity.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Geosciences, Multidisciplinary
G. Cisse, M. Essi, B. Kedi, M. Nicolas, S. Staunton
Summary: Soil organic matter (SOM) is crucial for ecosystem functioning, and glomalin-related soil protein (GRSP) is responsible for the physical stability of soil. This study investigated the origin and factors influencing the accumulation of GRSP in soils. The results showed that GRSP was higher in conifer forests compared to broadleaf forests and was positively correlated with SOC and total nitrogen, while inversely related to pH.
Article
Biochemistry & Molecular Biology
Julian Mensch, Lucas Kreiman, Pablo E. Schilman, Esteban Hasson, David Renault, Herve Colinet
Summary: Fruit fly species from temperate regions, particularly immature females, demonstrate higher cold tolerance and faster recovery times, along with elevated levels of energy-related metabolites such as glucose and alanine compared to tropical counterparts. These metabolites may play a crucial role in cold tolerance for temperate species, even at modest concentrations.
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY
(2021)
Article
Environmental Sciences
Zihao Zhang, Yue Xu, Yan Wang, Zhiyuan Li, Chenmeng Yang, Timothy F. M. Rodgers, Feng Tan
Summary: The concentrations of organophosphate flame retardants (OPFRs) in soil samples from Tibetan Plateau are relatively high, especially around urban areas. OPFRs in the soil mainly originate from atmospheric transport, but may also be influenced by nearby sources. Most OPFRs have relatively low ecological risks, but in some cases, moderate risks exist, especially in urban areas.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Oceanography
Kate R. Sprogis, Alicia L. Sutton, Micheline-N Jenner, Robert D. McCauley, K. Curt S. Jenner
Summary: This study aims to examine the distribution of cetaceans and seabirds along the 110 degrees E meridian from temperate to tropical waters. Through acoustic recordings and visual observations, a total of seven cetacean species, 186 seabird species sightings, and 225 cetacean acoustic detections were recorded. Pygmy blue whales were the most commonly detected cetacean species, while soft-plumaged petrels were the most commonly sighted seabird species. The data collected provide a baseline occurrence for future studies.
DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
(2022)
Article
Multidisciplinary Sciences
Ntwanano Moirah Malepfane, Pardon Muchaonyerwa, Jeffrey Charles Hughes, Rebecca Zengeni
Summary: Land use affects the stocks of soil organic carbon, with subsoil horizons potentially containing more protected carbon than topsoil layers. In South Africa, humic soils have high organic carbon in the A horizon, but the carbon stocks throughout the soil profile depth are unknown. Cultivation reduces soil organic carbon, and soils with thick humic A horizons and coarser texture store more carbon in deeper layers, while soils with thin humic A horizons and finer texture store more carbon in the 0-20 cm depth.
Article
Environmental Sciences
Yongqiang Qin, Xiaoyue Ren, Hanye Ju, Yankun Zhang, Jin Liu, Jiliang Zhang, Xiaoping Diao
Summary: With the increase in global demand for mariculture products, the use of antibiotics in mariculture areas has significantly risen. However, there is limited research on antibiotic residues in mariculture environments, especially in tropical waters, which hinders a comprehensive understanding of their environmental presence and risk. Therefore, this study examined the occurrence and distribution of 50 antibiotics in the near-shore aquaculture waters of Fengjia Bay. The results showed the presence of 21 antibiotics, with quinolones and tetracyclines being the most commonly detected. The concentrations of antibiotic residues varied, and certain antibiotics were found to pose medium to high risks to the ecosystem. Overall, this study provides important insights into the distribution and ecological risk of antibiotics in Fengjia Bay.
Article
Environmental Sciences
Mehta Bulbul, Sharmila Bhattacharya, Yadav Ankit, Pushpit Yadav, Ambili Anoop
Summary: This study provides baseline information on the concentration levels, distribution characteristics and pollution sources of environmental contaminants, such as phthalic acid esters and petroleum hydrocarbons in surface sediments of tropical estuaries in western Peninsular India. The results show varying spatial distributions and dominance of different contaminants in the two estuaries, possibly due to discharge sources and anthropogenic activities. The findings highlight the need for effective measures in controlling the pervasion of these contaminants.
ENVIRONMENTAL RESEARCH
(2022)
Article
Biodiversity Conservation
Maria Kahlert, Satu Maaria Karjalainen, Francois Keck, Martyn Kelly, Mathieu Ramon, Frederic Rimet, Susanne Schneider, Kalman Tapolczai, Jonas Zimmermann
Summary: In recent years, diatom taxonomy has advanced with the discovery of new species and the use of molecular genetics to reveal cryptic diversity. This study focuses on defining the ecological profiles and geographical distributions of unique molecular identifiers (ASVs) for the genera Fragilaria and Ulnaria. The study found that there are no general geographical barriers for the distribution of freshwater benthic diatom ASVs in Europe, but dispersal is not rapid enough to hide historical events. Fragilaria and Ulnaria ASVs showed considerable overlap in geographical distribution, habitat, and ecological preferences.
ECOLOGICAL INDICATORS
(2022)
Article
Engineering, Environmental
Muhammad Rozaimi Mohd Zaki, Peh Xin Ying, Azim Haziq Zainuddin, Muhammad Raznisyafiq Razak, Ahmad Zaharin Aris
Summary: This study investigated the abundance and characteristics of microplastics in the surface water of the Klang River estuary in Malaysia. The microplastics were mainly transparent fibers, fragments, and pellets, originating from heavily urbanized and industrial areas, posing a potential threat to organisms. Future research is needed to further investigate microplastic contamination in estuaries.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2021)
Article
Biology
Gonzalo Sotomayor, Jorge Romero, Daniela Ballari, Raul F. Vazquez, Ivan Ramirez-Morales, Henrietta Hampel, Xavier Galarza, Bolivar Montesinos, Marie Anne Eurie Forio, Peter L. M. Goethals
Summary: In this study, a machine learning algorithm, Random Forest, was used to establish species distribution models for five genera of riffle beetles (Elmidae) in the Paute river basin, southern Ecuador. The study considered meteorology, land use, hydrology, and topography as environmental variables. The results showed that alterations to riparian vegetation, canopy presence, precipitation, elevation, and slope were the main factors affecting the spatial variability of Elmidae. The findings provide important insights for conservation and restoration efforts in the study area and potentially similar systems.
Article
Environmental Sciences
Lei Du, Sining Zhong, Kongyan Luo, Shanqing Yang, Jianxin Xia, Qian Chen
Summary: This study has expanded our knowledge of distribution patterns, co-occurrence networks, and environmental factors influencing microbial communities in metal pollution soils.
Article
Environmental Sciences
Sebastian Naeher, Arnaud Huguet, Celine L. Roose-Amsaleg, Anniet M. Laverman, Celine Fosse, Moritz F. Lehmann, Sylvie Derenne, Jakob Zopfi
Article
Environmental Sciences
Sebastien Gogo, Fatima Laggoun-Defarge, Fatima Merzouki, Stephane Mounier, Audrey Guirimand-Dufour, Nevila Jozja, Arnaud Huguet, Frederic Delarue, Christian Defarge
JOURNAL OF SOILS AND SEDIMENTS
(2016)
Article
Geochemistry & Geophysics
Arnaud Huguet, Vincent Grossi, Imene Belmahdi, Celine Fosse, Sylvie Derenne
ORGANIC GEOCHEMISTRY
(2015)
Article
Geochemistry & Geophysics
Sarah Coffinet, Arnaud Huguet, David Williamson, Laurent Bergonzini, Christelle Anquetil, Amos Majule, Sylvie Derenne
ORGANIC GEOCHEMISTRY
(2015)
Article
Geography, Physical
Mariusz Galka, Laurent Bergonzini, David Williamson, Amos Majule, Catherine Masao, Arnaud Huguet
QUATERNARY INTERNATIONAL
(2015)
Article
Environmental Sciences
M. Mendez-Millan, T. T. Nguyen Tu, J. Balesdent, S. Derenne, D. Derrien, C. Egasse, A. Thongo M'Bou, B. Zeller, C. Hatte
Article
Geochemistry & Geophysics
Sarah Coffinet, Arnaud Huguet, David Williamson, Celine Fosse, Sylvie Derenne
ORGANIC GEOCHEMISTRY
(2014)
Article
Geochemistry & Geophysics
Arnaud Huguet, Andre-Jean Francez, My Dung Jusselme, Celine Fosse, Sylvie Derenne
ORGANIC GEOCHEMISTRY
(2014)
Article
Geography, Physical
Sarah Coffinet, Arnaud Huguet, Laurent Bergonzini, Nikolai Pedentchouk, David Williamson, Christelle Anquetil, Mariusz Galka, Piotr Kolaczek, Monika Karpinska-Kolaczek, Amos Majule, Fatima Laggoun-Defarge, Thomas Wagner, Sylvie Derenne
QUATERNARY SCIENCE REVIEWS
(2018)
Article
Biology
Arnaud Huguet, Sylvain Bernard, Rime El Khatib, Martina I. Gocke, Guido L. B. Wiesenberg, Sylvie Derenne
Summary: This study characterizes the mineralogical and chemical properties of rhizoliths in a Late Pleistocene loess-paleosol sequence, revealing that large rhizoliths are actually composed of numerous microrhizoliths formed by calcium carbonates. The precipitation of secondary carbonates occurs both around and within plant roots, leading to the selective preservation of recalcitrant root biopolymers like lignin and suberin.
Article
Geography, Physical
Joana F. Cruz, Ioanna Bouloubassi, Arnaud Huguet, Alice M. S. Rodrigues, Thiago P. Santos, Igor M. Venancio, Douglas Lessa, Rodrigo L. Sobrinho, Rodrigo A. Nascimento, Marcelo C. Bernardes
Summary: This study reconstructed the upper temperature variations in the Subtropical South-western Atlantic (SSWA) using organic proxies. The results showed similar patterns in sea temperature records derived from alkenone-based UK'37 and isoprenoid glycerol dialkyl glycerol tetraethers (isoGDGTs)-based TEXH86 proxies. The study suggests that the joint use of these proxies is a promising approach to estimating paleoceanographic changes in the upper thermocline.
QUATERNARY SCIENCE REVIEWS
(2023)
Article
Engineering, Environmental
Minli Guo, Xiaolu Li, Yi Wang, Yunlin Zhang, Qinglong Fu, Arnaud Huguet, Guanglong Liu
Summary: This study used EEM fluorescence spectroscopy and FT-ICR MS to assess the release of DIP during POM photodegradation. The results showed that POM significantly photodegraded under light irradiation, accompanied by the production and release of DIP in the aqueous solution. Organic phosphorus participated in photo-chemical reactions, generating oxygen-enriched and saturated compounds that can be utilized by organisms. Reactive oxygen species and 3CDOM* played important roles in POM photodegradation.
Article
Geography, Physical
Louis Rouyer-Denimal, Aline Govin, Ioanna Bouloubassi, Thanh Thuy Nguyen Tu, Ana Luiza Spadano Albuquerque, Christelle Anquetil, Arnaud Huguet
Summary: The role of cross-equatorial currents in the northward spreading of warm and salty waters during glacial terminations is essential. This study presents temperature records based on organic proxies from a marine sediment core covering the last 305 thousand years before present. The results suggest that the strong warming of the tropical western Atlantic during glacial terminations can be explained by the combined influences of the thermal bipolar seesaw and the Agulhas Leakage. Additionally, an enhanced cross-equatorial gyre may explain the synchronous deglacial warming of the western and eastern sides of the tropical Atlantic.
QUATERNARY SCIENCE REVIEWS
(2023)
Article
Soil Science
Cyrill U. Zosso, Nicholas O. E. Ofiti, Jennifer L. Soong, Emily F. Solly, Margaret S. Torn, Arnaud Huguet, Guido L. B. Wiesenberg, Michael W. Schmidt
Summary: The study found that the abundance of microorganisms decreased with depth in subsoils, and the response of microbial communities to warming depended on depth, with an increase in the relative abundance of Actinobacteria in warmed subsoils. These microbial responses could be explained by the observed decrease in subsoil organic carbon concentrations.