Article
Plant Sciences
Cristina I. Nunes, Juan L. Garcia Massini, Ignacio H. Escapa, Diego M. Guido, Kathleen A. Campbell
Summary: This study describes new specimens of sooty molds associated with conifer leaves from Jurassic hot spring deposits in Patagonia, Argentina. Through light microscopy observations, it was found that these fungi grow on twigs with podocarpaceous affinities, forming dense subicula. Additional research revealed various asexual and sexual reproductive structures present in these specimens.
AMERICAN JOURNAL OF BOTANY
(2021)
Article
Paleontology
Georgina M. Del Fueyo, Martin A. Carrizo, Daniel G. Poire, Maiten A. Lafuente Diaz
Summary: This study describes a petrified trunk collected from the Springhill Formation in Argentina, identifying a new fossil taxon. Analysis of sedimentology and plant fossils suggests the tree grew in a warm to temperate climate environment affected by frequent volcanic activity.
ACTA PALAEONTOLOGICA POLONICA
(2021)
Article
Geochemistry & Geophysics
Bronwyn L. Teece, Diego M. Guido, Kathleen A. Campbell, Martin J. Van Kranendonk, Amanda Galar, Simon C. George
Summary: Gas chromatography-mass spectrometry was used to analyze samples from a Late Jurassic sinter complex in Argentinean Patagonia. Results showed that distal sinter apron had higher preservation potential for organic matter compared to the proximal area. The study suggests that silica sinter can preserve abundant organics over millions of years.
ORGANIC GEOCHEMISTRY
(2022)
Article
Plant Sciences
Stephen McLoughlin, Chris Mays
Summary: This study reveals new features of longitudinally aligned borings attributed to the ichnotaxon Dekosichnus meniscatus in the inner secondary wood of a silicified Middle-Late Jurassic conifer from Argentina. The borings, which may have been excavated by cerambycid beetle larvae, represent one of the earliest potential fossil records of this group.
REVIEW OF PALAEOBOTANY AND PALYNOLOGY
(2022)
Article
Geochemistry & Geophysics
V Ruiz Gonzalez, E. M. Renda, H. Vizan, M. Ganerod, C. G. Puigdomenech, C. B. Zaffarana
Summary: This study presents the analysis of paleomagnetic data from the Jurassic Bahia Laura Complex in the Deseado Massif, revealing the regional deformation history during the breakup of Gondwana. The results indicate northward drift, clockwise rotation, and westward drift of South America during the Jurassic period. These findings provide important insights into the evolution of Gondwana.
Article
Environmental Sciences
Santiago I. Hurtado, Martin Calianno, Santino Adduca, Marcos H. Easdale
Summary: In the last few decades, the northern Patagonia region in Argentina has experienced a shift towards drier conditions, with decreasing precipitation and increasing temperatures. This has resulted in reduced streamflows in the Neuquen and Chubut rivers. The earlier onset of the second streamflow peak and the decline in spring streamflow highlight the importance of adapting water management strategies to meet summer-autumn water demands.
REGIONAL ENVIRONMENTAL CHANGE
(2023)
Article
Plant Sciences
Ricardo Alfredo del Barrio, Gustavo Adolfo Orioli, Andrea Soledad Brendel, Lilia Ivone Lindstroem, Cecilia Noemi Pellegrini, Jose Antonio Campoy
Summary: This study presents a multidisciplinary analysis of dormancy progression in walnut trees in northern Patagonia, linking forcing/field phenology, bud anatomical development, and soluble sugar dynamics. The results suggest that heat requirement is the main driver in phenology dynamics, and the decrease in sucrose may serve as a reliable biological marker for endodormancy release in walnut trees.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Multidisciplinary Sciences
Alberto E. Perez, Rodrigo Moulian Tesmer, Juan Francisco Reyes Sanchez, Jose L. Lanata, Andrea Medina, Miguel Chapanoff Cerda
Summary: This article reports on a burial found at the Newen Antug site in Argentine Patagonia, which is a wooden canoe-shaped structure dating back to 880 years BP during the Late Pottery period. This is the first discovery of a burial in a canoe structure in the region and the southernmost example on the continent. It also provides the earliest record in Argentina of pottery of the Red on White Bichrome tradition used as a grave offering, expanding the shared characteristics between the two sides of the Andes mountains during the pottery periods.
Article
Environmental Sciences
Naiara Klopertanz, Martin Amestoy, Sergio Abate, Marina Winter
Summary: While the impact of plastic debris in Argentina has increased significantly in recent years, evidence of ingestion of such debris remains relatively low compared to other regions. This study found that one Great Grebe had ingested a single macroplastic piece, a yellow elastic band.
MARINE POLLUTION BULLETIN
(2022)
Article
Forestry
Facundo J. Oddi, Cecilia Casas, Matias G. Goldenberg, Juan P. Langlois, Jennifer B. Landesmann, Juan H. Gowda, Thomas Kitzberger, Lucas A. Garibaldi
Summary: The study developed a model for predicting the height of dominant trees of a southern South American conifer based on climate, topography, soil predictors, and tree age. It was found that dominant trees are taller in cooler and wetter sites with more soil carbon and lower soil acidity.
FOREST ECOLOGY AND MANAGEMENT
(2022)
Article
Geology
Soledad S. Brezina, Paul D. Taylor, Maria Romero, Evangelina E. Palopolo, Silvio Casadio
Summary: This study describes the diverse bryozoan fauna encrusting oyster shells from the Maastrichtian and Danian Jaguel and Roca formations in the Neuquen Basin, recording multiple species and introducing two new ones. Results indicate that the diversity of encrusting bryozoans associated with oyster shells shows no major changes across the K/Pg boundary in northern Patagonia. However, an important increase in diversity is recorded during the upper Danian.
CRETACEOUS RESEARCH
(2021)
Article
Chemistry, Analytical
Norah Salem Alsaiari, Muhammad Ahmad, Irum Shaheen, Ijaz Ali, Umay Amara, Fatimah Mohammed Alzahrani, Sayed M. Eldin, Waqas Ul Arifeen, Tae Jo Ko, Iftikhar Hussain
Summary: In this study, composites based on ZnO/NiO were successfully fabricated and exhibited high specific capacity and long stability as electrode materials for supercapacitors. The synthesized 3D flower-shaped ZnO/NiO composite was characterized using various techniques. The electrochemical measurements showed that the highest specific capacity of 350 C g-1 was achieved at 2 A g-1 current, while the lowest specific capacity of 217 C g-1 was observed at 20 A g-1. After 8000 GCD cycles, the 3D flower-shaped ZnO/NiO electrode demonstrated a cyclic stability of 72.1% capacitance retention and 97.1% Coulombic efficiency.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Geography, Physical
M. Sol Raigemborn, Sabrina Lizzoli, Ethan Hyland, Jennifer Cotton, Lucia E. Gomez Peral, Elisa Beilinson, J. Marcelo Krause
Summary: This study is of significant importance for understanding climatic changes in the Southern Hemisphere during the Eocene.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2022)
Article
Multidisciplinary Sciences
Alexis M. Aranciaga Rolando, Matias J. Motta, Federico L. Agnolin, Makoto Manabe, Takanobu Tsuihiji, Fernando E. Novas
Summary: This study describes a partial skeleton of a megaraptorid from the Maastrichtian beds in Argentina, which is the most informative megaraptoran known from this time period and is identified as a new taxon. Phylogenetic analysis shows that South American megaraptorans form a monophyletic clade, while Australian and Asian members are stem groups. South American megaraptorans differ from more basal forms in several anatomical features and are larger and more robustly built.
SCIENTIFIC REPORTS
(2022)
Article
Geosciences, Multidisciplinary
J. L. Garcia Massini, D. M. Guido, K. C. Campbell, A. J. Sagasti, M. Krings
Summary: A new cyanobacterium, Patagonifilum jurassicum nov. gen. et sp., has been discovered in Late Jurassic chert from the Deseado Massif in Patagonia, Argentina. The cyanobacterium exhibits various forms and may have interacted with other organisms.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2021)
Article
Geography, Physical
Huyue Song, Shixue Hu, Michael Benton, Dayong Jiang
Summary: This article examines the end Permian to Middle Triassic interval, which witnessed a significant marine mass extinction and delayed recovery. The focus is on Triassic marine sediments in South China, providing unique documentation of the collapse and recovery of marine ecosystems. Several papers analyze different fossils and their ecological significance, while others study biostratigraphy, reconstruct paleoenvironments, and link records to volcanic eruptions.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2024)
Article
Geography, Physical
Mohammad Firoze Quamar, Upasana Swaroop Banerji, Biswajeet Thakur, Ratan Kar
Summary: The Indian Summer Monsoon is a crucial component of the Asian Monsoon System, impacting rainfall, agricultural productivity, and socio-economic growth in India and nearby regions. The central monsoon zone in India is more responsive to strong monsoon phases than weak ones.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2024)
Article
Geography, Physical
Maria Laura Balestrieri, Valerio Olivetti, David Chew, Luca Zurli, Massimiliano Zattin, Foteini Drakou, Gianluca Cornamusini, Matteo Perotti
Summary: This study presents a multidisciplinary provenance study on legacy cores drilled in the central Ross Sea, Antarctica, providing insights into the oscillation of ice flows and advance and retreat phases of the West Antarctic Ice Sheet.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2024)
Article
Geography, Physical
P. Depuydt, S. Toucanne, C. Barras, S. Le Houedec, M. Mojtahid
Summary: This study provides a comprehensive overview of the dynamics of the upper branch of the Atlantic Meridional Overturning Circulation (AMOC) in the mid-latitudes of the Northeast Atlantic. It focuses on the European Slope Current (ESC) and its glacial equivalent known as the Glacial Eastern Boundary Current (GEBC). The study reveals significant changes in flow strength and ventilation during the glacial and deglaciation periods, as well as a gradual weakening of the slope current during the Holocene.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2024)
Article
Geography, Physical
Junhee Park, Holly J. Stein, Judith L. Hannah, Svetoslav V. Georgiev, Oyvind Hammer, Snorre Olaussen
Summary: This study reports new Re-Os ages for black shales from Svalbard and evaluates the paleoenvironment during organic-rich shale deposition. The study also proposes correlations of specific Late Jurassic ammonite zones between the Boreal and Tethyan realms.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2024)
Article
Geography, Physical
Guocheng Dong, Weijian Zhou, Feng Xian, Yunchong Fu, Li Zhang, Ling Tang, Pengkai Ding
Summary: The cause of ice-age cycles is still not fully understood, and studying the timing and magnitude of mountain glaciations can provide valuable insights. This study presents new dating results from the Niqingqu Valley in the Tibetan Plateau, showing multiple glacial activities prior to the Penultimate Glacial Maximum. The findings suggest that low atmospheric CO2 content and reduced summer solar insolation/high summer-monsoon precipitation played a role in these glacial fluctuations.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2024)
Article
Geography, Physical
Haoran Dong, Zhitong Chen, Yucheng Wang, Jie Chen, Zhiping Zhang, Zhongwei Shen, Xinwei Yan, Jianbao Liu
Summary: Through sediment records from Lake Nanyi in the lower Yangtze, we found that anthropogenic fire activity played a dominant role in the region, and the temporal pattern of fire activity was asynchronous from east to west. Archaeological evidence suggests an inverse relationship between agricultural and population levels and fire intensity during the mid-Holocene, with fire intensity being influenced by the diversity of landscape types associated with pre-historic subsistence patterns. Overall, changes in regional water-level delayed the transition from hunting-gathering to agriculture in the lower Yangtze region.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2024)
Article
Geography, Physical
Giovanni Coletti, Giulia Bosio, Alberto Collareta, Or Mordecai Bialik, Eleonora Regattieri, Irene Cornacchia, Gianni Insacco, John Buckeridge
Summary: This paper argues that sessile barnacles are an excellent proxy for palaeoenvironmental reconstructions. The shells of barnacles consist of diagenetically stable low-magnesium calcite and record short-term variations. Analyses of several Western Mediterranean barnacle-rich deposits demonstrate the utility of barnacles as proxies for water depth, distance from the coastline, and hydrodynamic conditions. Moreover, the stable isotope ratios of barnacle shells can provide detailed palaeoenvironmental information.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2024)
Article
Geography, Physical
Feng Wu, Xinong Xie, Wen Yan, Youhua Zhu, Beichen Chen, Jianuo Chen, Mo Zhou
Summary: This paper describes the Quaternary evolution of Meiji Atoll in the southern South China Sea. The findings show how variations in sea surface temperature, eustatic sea level, and tectonics have influenced the development of the atoll. These findings have broader implications for understanding the Quaternary evolution of similar tropical carbonate atolls in the region.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2024)
Article
Geography, Physical
Ana Mateos, Ericson Hoelzchen, Jesus Rodriguez
Summary: The Epivillafranchian and the transition to the Galerian was a period of environmental fluctuations and faunal turnover. Hominins and giant hyenas could coexist during the Epivillafranchian, but the transition to the Galerian led to a disruption of the scavenging niche, coinciding with the extinction of P. brevirostris.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2024)
Article
Geography, Physical
Tianyu Du, Wensheng Zhang, Bing Li, Linjing Liu, Yuecong Li, Yawen Ge, Shiyong Yu
Summary: This article presents sedimentary evidence for a dramatic channel displacement of the lower Yellow River about 3000-2600 years ago, and explains the impact of this displacement on the geomorphology and human migration.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2024)
Article
Geography, Physical
Johann Mueller, Michael M. Joachimski, Oliver Lehnert, Peep Mannik, Yadong Sun
Summary: The Late Ordovician mass extinction occurred during an ice age, with maximum ice coverage and a substantial drop in global sea level. This led to the exposure or shallowing of shallow tropical shelf environments. The study suggests that the burial rate of nutrient phosphorus (P) on shelves was minimal during this glacial period, leading to excess bioavailable P entering the open ocean and stimulating phytoplankton production, which in turn lowered oxygen concentrations.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2024)
Article
Geography, Physical
Marina Addante, Patrizia Maiorano, Giovanna Scopelliti, Angela Girone, Maria Marino, Samanta Trotta, Antonio Caruso
Summary: This study presents the first high-resolution results on planktonic foraminiferal stable oxygen isotopes and calcareous plankton assemblages, providing insights into the glacial-interglacial variability and North Atlantic climate variability. The research also reveals evidence of the first significant southward migration of the Subarctic Front in the mid-latitudes.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2024)
Article
Geography, Physical
Bing-Cai Liu, Rui-Wen Zong, Kai Wang, Jiao Bai, Yi Wang, Hong-He Xu
Summary: Phytogeography plays a vital role in the evolution of plants. This paper describes a new species of a spore-bearing plant from the upper Silurian period in West Junggar, China. By analyzing global Silurian macrofossil records, the study reveals the spatial-temporal distribution of Silurian plant macrofossils and identifies two phytogeographic realms during the Pridoli Epoch.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2024)
Article
Geography, Physical
Francois Fournier, Thomas Teillet, Alexis Licht, Jean Borgomano, Lucien Montaggioni
Summary: This study investigates the temporal evolution of neritic carbonates in the proto-South China Sea to reconstruct East Asian monsoonal currents and winds during the middle to late Paleogene. The results highlight that many of the features of the summer East Asian Monsoon large-scale circulation are rooted in the middle Paleogene.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2024)