Article
Plant Sciences
M. Teresa Boquete, Ingeborg Lang, Marieluise Weidinger, Christina L. Richards, Conchita Alonso
Summary: The study investigates intraspecific phenotypic variation in bryophytes' response to heavy metal stress, focusing on two moss species with different affinities for heavy metals. The results show that different isolates of Scopelophila cataractae exhibit varying levels of tolerance to heavy metals based on their accumulation patterns, while Ceratodon purpureus displays differences in tolerance to Cd based on gender. This research provides insight into the mechanisms used by bryophytes to cope with heavy metal stress and reveals sex-specific differences in heavy metal tolerance.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2021)
Article
Biodiversity Conservation
Emile Brisson-Curadeau, Kyle Elliott, Charles-Andre Bost
Summary: The adaptation of king penguins to climate varies in different geographical environments, resulting in differences in breeding success rates. The king penguin population on Kerguelen island showed higher breeding success in warmer years, possibly due to increased prey abundance and improved chick survival in winter with warmer air temperature. In contrast, the penguin population in Crozet experienced lower breeding success in warmer years, as productive currents shifted away from the colony, affecting foraging behavior.
GLOBAL CHANGE BIOLOGY
(2022)
Article
Engineering, Environmental
Xinhui An, Jean-Chrisologue Totozafy, Alexis Peaucelle, Catherine Yvonne Jones, William G. T. Willats, Herman Hofte, Massimiliano Corso, Nathalie Verbruggen
Summary: Cadmium (Cd) accumulation varies greatly among different populations of Arabidopsis halleri. This study found that the Cd-hyperaccumulator population, PL22-H, had a 3-fold higher concentration of Cd in pectin compared to the Cd-excluder population, I16-E. The (1 -> 4)-beta-galactan pectic epitope showed the largest difference between the two populations. Through gene expression analysis, GALACTAN SYNTHASE1 was identified as a key gene involved in Cd translocation. Overall, these findings suggest that (1 -> 4)-beta-galactan plays an indirect role in Cd translocation by regulating pectin structure and interactions between polysaccharides in the cell wall.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Limnology
Laure Vilgrain, Frederic Maps, Marc Picheral, Marcel Babin, Cyril Aubry, Jean-Olivier Irisson, Sakina-Dorothee Ayata
Summary: The study utilized imaging techniques to extract morphological traits from marine zooplankton images, revealing spatial distribution and characteristic changes of Arctic zooplankton community during sea ice break-up. Results showed that large copepods were mostly associated with ice-covered waters, while smaller individuals were more common in open waters, with increased feeding activity in ice-free waters. These trait distributions are likely influenced by bottom-up control.
LIMNOLOGY AND OCEANOGRAPHY
(2021)
Article
Evolutionary Biology
Stuart Willis, D. Katharine Coykendall, Matthew R. Campbell, Shawn Narum
Summary: This study investigates the evolution of allele frequencies at major effect loci in steelhead populations that have declined due to human impacts. The researchers found that these loci showed variation influenced by evolutionary processes and human activities, highlighting the importance of understanding and conserving genetic diversity in protected species.
EVOLUTIONARY APPLICATIONS
(2023)
Article
Agronomy
Weina Zhang, Haigang Li, Junling Zhang, Jianbo Shen, Hamish Brown, Enli Wang
Summary: The growth, organ development, and yield formation of maize are controlled by biomass and phosphorus partitioning and remobilization processes. There is a lack of detailed data for modeling modern maize cultivars. The study found that the leaf-senescence rate of Zhengdan 958 is lower, allowing post-silking photosynthesis to meet grain biomass demand. Despite the higher post-silking P uptake, a portion of leaf and stem P accumulated pre-silking is remobilized into grain.
Article
Geography
Angela Hernandez-Moreno, Cristian Echeverria, Benjamin Sotomayor, Daniel P. Soto
Summary: The study evaluated the anthropization dynamics and their impact on landscape spatial patterns (LSPs) in two contrasting Chilean landscapes, Nuble and Coyhaique, using an anthropization index (AI) derived from land use and land cover (LULC) maps. The results showed significant differences in AI between the two landscapes, mainly due to urban expansion, agriculture, and tree plantation. The relationship between AI and landscape metrics was opposite in each landscape, with patch density and edge density showing positive relationship in Coyhaique and negative in Nuble.
Article
Plant Sciences
Ruimin Huang, Fei Peng, Dongsheng Wang, Fei Cao, Chunlei Guo, Liyang Yu, Jingzheng Zhang, Yuedong Yang
Summary: We analyzed the metabolites and genes related to sugar in two Chinese chestnut cultivars at different stages of development. The high-sugar cultivar had higher soluble sugar content compared to the low-sugar cultivar. Sucrose was found to be the dominant sugar in the embryos. Gene expression analysis revealed that the high-sugar cultivar promoted starch degradation and sucrose synthesis, leading to higher sugar accumulation. Our study provides new insights into the regulation of sugar accumulation in Chinese chestnut nuts.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Biochemistry & Molecular Biology
Inger Skrede, Claude Murat, Jaqueline Hess, Sundy Maurice, Jorn Henrik Sonstebo, Annegret Kohler, Dominique Barry-Etienne, Dan Eastwood, Nils Hogberg, Francis Martin, Havard Kauserud
Summary: Research shows that the populations of dry rot fungus in Europe and Japan split 3000-19,000 years ago, with the European population experiencing a tight bottleneck approximately 250 generations ago, leading to low adaptive potential. Only two loci under selection were found, and selective sweep analyses revealed different gene signals in Japan and Europe.
Article
Marine & Freshwater Biology
Francisco Asensio-Montesinos, Gloria Blaya-Valencia, Hugo Corbi, Ana Beltran-Sanahuja, Carlos Sanz-Lazaro
Summary: This study investigated the short-and long-term accumulation dynamics of microplastics on two beaches in the Western Mediterranean. The results suggest that in areas without direct sources of pollution, microplastic accumulation dynamics are driven more by oceanographic variables.
JOURNAL OF SEA RESEARCH
(2022)
Article
Mathematics
Jaroslav Masek, Vladimira Stefancova, Jaroslav Mazanec, Petra Jurankova
Summary: This paper is based on the concrete partial results of the H2020 project Shift2Rail IP4, which evaluates attitudes towards travel for demonstration sites based on a sample of respondents from two countries. Mathematical statistical tools were used to evaluate data and find a connection with promoting mobility as a service. The research identified differences in traffic behavior within MaaS activities using two-step cluster analysis.
Article
Biotechnology & Applied Microbiology
Geniane Schneider, Felix L. Figueroa, Julia Vega, Antonio Aviles, Paulo Antunes Horta, Nathalie Korbee, Jose Bonomi-Barufi
Summary: This study evaluated the performance of the red alga Gracilaria cornea under different radiation treatments. The results showed that UV radiation influenced the growth rates and accumulation of internal compounds, and suggested the presence of photoreceptors sensitive to UV-A, UV-B, and blue light.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2022)
Article
Biodiversity Conservation
Ivan Paz-Vinas, Iris Lang, Paul Millet, Charlotte Veyssiere, Geraldine Loot, Julien Cucherousset
Summary: Genetic analyses were used to identify local invasion pathways of two invasive crayfish species in a dense network of artificial lakes. Different patterns of genetic variability between the two species were revealed, with environmental factors affecting genetic variability indices. While limited by genetic variability in some cases, neutral genetic variation assessments can provide important insights for inferring local invasion pathways for invasive alien species.
JOURNAL OF APPLIED ECOLOGY
(2021)
Article
Plant Sciences
Jana Jaksova, Lubomir Adamec, Ivan Petrik, Ondrej Novak, Marek Sebela, Andrej Pavlovic
Summary: The study found that unlike Aldrovanda, Utricularia does not use jasmonates for the activation of carnivorous response, making it the second genus in Lamiales that has not co-opted jasmonate signaling for botanical carnivory. Both genera secrete digestive fluid containing cysteine protease homologous to dionain, but the regulation may vary between them.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2021)
Article
Agronomy
Isabel Borges, Luisa Oliveira, Ana C. Durao, Patricia Arruda, Elisabete Figueiredo, Jose Carlos Franco, Eric Lucas, Antonio O. Soares
Summary: This study compared the life-history traits and population growth parameters of two feral populations of Macrolophus pygmaeus from Portugal mainland and the Azores archipelago. Contrary to expectations, the Azorean population displayed better reproductive performance and higher population growth rate, even though it was predicted to have lower genetic diversity. These findings are significant for the biological control of the tomato leaf miner, Tuta absoluta.
Review
Ecology
Emily B. Graham, Colin Averill, Ben Bond-Lamberty, Joseph E. Knelman, Stefan Krause, Ariane L. Peralta, Ashley Shade, A. Peyton Smith, Susan J. Cheng, Nicolas Fanin, Cathryn Freund, Patricia E. Garcia, Sean M. Gibbons, Marc W. Van Goethem, Marouen Ben Guebila, Julia Kemppinen, Robert J. Nowicki, Juli G. Pausas, Samuel P. Reed, Jennifer Rocca, Aditi Sengupta, Debjani Sihi, Marie Simonin, Michal Slowinski, Seth A. Spawn, Ira Sutherland, Jonathan D. Tonkin, Nathan I. Wisnoski, Samuel C. Zipper
Summary: Disturbances cause fundamental changes in ecosystem functions, but there is a lack of unified foundation for discussing and quantifying the complexity of disturbances across interdisciplinary perspectives. By identifying a key limitation in disturbance ecology, researchers have developed a generalizable framework to understand disturbances and their impacts, which can be supplemented by discipline-specific variables to benefit both inter- and intra-disciplinary research. This framework provides a baseline standard for comparing disturbances across different fields and encourages explicit definition of disturbance drivers and impacts to support future syntheses and meta-analyses of disturbance research.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2021)
Article
Fisheries
Patricia E. Garcia, Carolina F. Mansilla Ferro, Maria C. Dieguez
Summary: The optical characterization of DOM in a Patagonian wetland showed that changes in hydroperiod and dissolved organic carbon concentration influenced the photoreactivity and lability of DOM. The relative contribution of humic and non-humic components played a crucial role in determining the reactivity of DOM.
NEW ZEALAND JOURNAL OF MARINE AND FRESHWATER RESEARCH
(2023)
Article
Environmental Sciences
Luis B. Epele, Marta G. Grech, Emilio A. Williams-Subiza, Cristina Stenert, Kyle McLean, Hamish S. Greig, Leonardo Maltchik, Mateus Marques Pires, Matthew S. Bird, Aurelie Boissezon, Dani Boix, Eliane Demierre, Patricia E. Garcia, Stephanie Gascon, Michael Jeffries, Jamie M. Kneitel, Olga Loskutova, Luz M. Manzo, Gabriela Mataloni, Musa C. Mlambo, Beat Oertli, Jordi Sala, Erica E. Scheibler, Haitao Wu, Scott A. Wissinger, Darold P. Batzer
Summary: Climate change has multiple effects on wetland macroinvertebrate diversity, mainly through increasing maximum temperature and changing precipitation patterns. Wetlands located in warm-dry regions are the most vulnerable, while montane and high-latitude wetlands are also susceptible but not expected to experience complete extirpation at the family level.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
L. G. De Stefano, A. Sanchez Valdivia, D. Gianello, M. Gerea, M. Reissig, P. E. Garcia, R. D. Garcia, C. Soto Cardenas, M. C. Dieguez, C. P. Queimalinos, G. L. Perez
Summary: For the past twenty years, lacustrine dissolved organic matter (DOM) has been a focus in various scientific disciplines due to its significance in carbon biogeochemistry and ecosystem functioning. The development of new satellites now allows for the evaluation of chromophoric dissolved organic matter (CDOM) in inland waters, which provides the opportunity to estimate DOM at appropriate spatiotemporal scales. This study evaluates the use of CDOM as a proxy for dissolved organic carbon (DOC) in seven Andean Patagonian lakes, and explores the relationship between CDOM absorption coefficients and DOC. The findings suggest that incorporating CDOM spectral shape information improves the estimation of DOC and has significant implications for environmental management, biogeochemical studies, and future remote sensing applications.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Mariana Lozada, Maria Soledad Zabala, Patricia E. Garcia, Maria C. Dieguez, Gregorio Bigatti, Paulina Fermani, Fernando Unrein, Hebe M. Dionisi
Summary: This study analyzed the microbial communities associated with Undaria pinnatifida in a coastal site in Patagonia. The presence of U. pinnatifida was found to have a significant impact on seawater quality, bacterial abundance, and microbial community structure.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Corina A. Coviaga, A. Patricia Perez, Lorena Y. Ramos, Laura Zalazar, Patricia E. Garcia, Gabriela C. Cusminsky
Summary: This study investigates the structure of non-marine ostracod metacommunities in Patagonia and finds that environmental and spatial processes have different influences on ostracod community structure in the Northern and Southern regions. While Southern Patagonia is primarily influenced by environmental factors, Northern Patagonia is influenced by both environmental and spatial factors.
Article
Environmental Sciences
Maria V. Castro, Patricia E. Garcia, Maria C. Maluendez Testoni, Patricia Rodriguez
Summary: This study analyzes the optical characteristics of dissolved organic matter (DOM) in shallow lakes and beaver ponds in Patagonia, Argentina. The results show that beaver ponds have significantly different DOM quality compared to shallow lakes, with higher levels of aromaticity and humic content and lower levels of recently produced DOM. This research is the first to compare DOM quantity and quality in Subantarctic shallow lakes and beaver ponds.
Article
Environmental Sciences
Roberto D. Garcia, Maria C. Dieguez, Patricia E. Garcia, Mariana Reissig
Summary: The cold-temperate headwaters of Patagonia in the Andes mountains provide an opportunity to study the impacts of climate and landscape on terrestrial-aquatic fluxes. This study focused on evaluating dissolved organic matter and nutrient dynamics in a stream originated from a mountain lake in a forested catchment. The results contribute to the understanding of carbon and nutrient dynamics in pristine freshwater systems of the Southern Hemisphere.
Article
Fisheries
Fabian Gaston Jara, Patricia Elizabeth Garcia, Roberto Daniel Garcia, Julieta Valeria Sganga, Mariana Pueta
Summary: Herbivores in wetlands play a crucial role in shaping wetland plant communities and providing nutrients for other organisms. A study of seasonal wetlands in Andean Patagonian forests found that the structure of the communities was not related to the length of the hydroperiod, but was influenced by factors such as chlorophyll, pH, and dissolved oxygen. The most abundant herbivores in these wetlands were rotifers, copepods, cladocerans, caddisflies, and amphibians.
NEW ZEALAND JOURNAL OF MARINE AND FRESHWATER RESEARCH
(2023)
Article
Environmental Sciences
Patricia E. Garcia, R. Daniel Garcia, Fabian G. Jara
Summary: This study contributes to understanding the interaction between terrestrial and aquatic systems in a pristine region which is increasingly impacted by global climate change.
WETLANDS ECOLOGY AND MANAGEMENT
(2023)
Article
Multidisciplinary Sciences
Lara Milena Sabater, Maria Celeste Franceschini, Luciana Irene Gallardo, Juan Manuel Coronel, Alejandra Patricia Perez
Summary: This study assesses the effect of vegetation structure on subtropical invertebrate communities in the Ibera wetlands. The results show that different macrophyte species provide varying vegetation structures that significantly affect animal density. Each macrophyte species is associated with different invertebrate taxa, and different sampling dates also have different dominant taxa.
ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS
(2022)
Article
Multidisciplinary Sciences
Lorena Y. Ramos, Alejandra Patricia Perez, Corina A. Coviaga, Antje Schwalb, Daniel Ariztegui, Marta Alperin, Gabriela C. Cusminsky
Summary: Geometric morphometric methods were utilized to discriminate between non-marine ostracods C. silvestrii and R. whatleyi juveniles, revealing differences in morphology, taxonomy, and paleoecology. The study identified three morphotypes in the specimens from Patagonia, with one morphotype associated with specific climatic conditions. These findings provide a foundation for further ecological and paleoenvironmental studies in the region.
ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS
(2021)