Article
Environmental Sciences
N. P. Jesiya, Girish Gopinath, T. R. Resmi
Summary: This study found that monsoon rains play a significant role in groundwater recharge in urban and peri urban areas of Kozhikode District in southern India. Changes in land use patterns over the past decade have significantly impacted groundwater recharge.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Meteorology & Atmospheric Sciences
Guangyao Wang, Haimao Lan, Zhongfang Liu
Summary: This study demonstrates the complex variations in stable isotope ratios in water vapor and rainfall during a super typhoon, showing the influences of convection intensity, moisture convergence, and rain evaporation. After the typhoon, dry continental air masses and subsidence lead to a significant decrease in both water vapor content and delta D values in the study region.
ATMOSPHERIC RESEARCH
(2021)
Article
Environmental Sciences
S. Garcia-Santos, R. Sanchez-Murillo, T. Pena-Paz, M. J. Chirinos-Escobar, J. O. Hernandez-Ortiz, E. J. Mejia-Escobar, L. Ortega
Summary: The inter-mountainous region of central Honduras has been facing urban drinking water shortages due to land use fragmentation and rainfall deficits. A 3-year tracer study conducted in the headwaters of the Choluteca River basin revealed the spatiotemporal connectivity between rainfall and groundwater recharge elevations. However, the method's effectiveness was limited by seasonal isotopic variability and rapid infiltration. Mapping critical recharge areas in central Honduras is crucial for improving water regulations and environmental protection.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Geochemistry & Geophysics
Christoph Spoetl, Yuri Dublyansky, Gabriella Koltai, Charlotte Honiat, Lukas Plan, Thomas Angerer
Summary: This study demonstrates that geochemical analysis of cave wall rock samples can identify hypogene karstification and provide further insights into the temperature and provenance of paleowater, as well as the source of its dissolved inorganic carbon.
Article
Engineering, Civil
Juan C. Guerra, Carlos M. Regalado, Axel Ritter, Maria Leon-Gonzalez
Summary: Stable isotopes of water were used to investigate the role of fog in cloud forests. The isotopic composition of rain and fog water and their variability were analysed for a Macaronesian cloud forest in Tenerife. The results showed little differences in the isotopic signature of fog and rain, indicating their common water sources and moisture conditions. The isotopic composition of rain and fog showed low correlation with temperature and total rainfall, but high anticorrelation with rainfall totals in the Canary Islands, which suggests a relationship between moisture source region and transport patterns.
JOURNAL OF HYDROLOGY
(2023)
Article
Environmental Sciences
C. Heredia, S. Guedron, D. Point, V Perrot, S. Campillo, C. Verin, M. E. Espinoza, P. Fernandez, C. Duwig, D. Acha
Summary: Cultural eutrophication is a major cause of water quality degradation worldwide. Carbon and nitrogen stable isotopes are simple and integrative tools for evaluating the degree of eutrophication in anthropogenically impacted aquatic ecosystems. The study found that carbon isotopes increased and nitrogen isotopes decreased with distance from the wastewater source in macrophytes and suspended particulate matter. The distribution of aquatic plants on the slope was influenced by both anthropogenic discharges and carbon uptake pathway. A binary mixing model allowed the assessment of anthropogenically derived carbon and nitrogen incorporation in macrophytes. Eutrophication was naturally attenuated within 6 to 8 km from the wastewater source.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Lize Meng, Changchun Huang, Yao He, Nana Shang, Heyu Yu, Tao Huang, Hao Yang, Kan Zhao
Summary: This study investigates the sources of char and soot using stable carbon isotopes to understand the impact of black carbon (BC) on the organic carbon pool in a lake. The results show that BC in the lake primarily comes from fossil fuels, with liquid fossil fuel contributing more to soot than char, and biomass and coal contributing less to soot than char. The source apportionment of BC, char, and soot reveals the influence of anthropogenically driven BC, char, and soot on the lake and the global carbon cycle.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Marianna Pinzone, Alice Cransveld, Emmanuel Tessier, Sylvain Berail, Joseph Schnitzler, Krishna Das, David Amouroux
Summary: This study reveals internal demethylation of methylmercury in European seabass and distinctive isotopic fractionation in Black Sea seabass. A multi-tissue approach proves to be effective in analyzing mercury sourcing and metabolism in marine fish.
ENVIRONMENTAL POLLUTION
(2021)
Article
Environmental Sciences
J. L. De Paepe, S. M. Aradvari Horvat, R. alvarez
Summary: This study aimed to analyze the changes in energy inputs, outputs, and energy indices along the rainfall gradient in the Pampas over the past four decades. The researchers also compared the current agrochemical and fertilizer use in Argentina with other major grain producing regions with large no-till surfaces. Furthermore, the study examined how energy fluxes varied with changes in soil organic carbon over the same time period. The findings showed that energy inputs increased over the four decades, while energy outputs and energy efficiencies improved. Additionally, the inclusion of soil organic carbon losses in energy quantifications provided a more comprehensive understanding of the energy fluxes in agricultural systems.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Mario Villalobos-Forbes, Germain Esquivel-Hernandez, Ricardo Sanchez-Murillo, Rolando Sanchez-Gutierrez, Ioannis Matiatos
Summary: This study investigated the compositions of precipitation and atmospheric nitrate in a tropical urban environment using stable isotopes and trajectory analysis. The results revealed contributions from different sources (such as lightning, biomass burning, gasoline, diesel, and soil biogenic emissions) to nitrate wet deposition, reflecting the oxidation processes of nitrogen oxides.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Forestry
Caroline Leland, Laia Andreu-Hayles, Edward R. Cook, Kevin J. Anchukaitis, Oyunsanaa Byambasuren, Nicole Davi, Amy Hessl, Dario Martin-Benito, Baatarbileg Nachin, Neil Pederson
Summary: Recent climate extremes in Mongolia have sparked interest in studying past climate variability in north-central Asia. Tree-ring width records in Mongolia have been extensively studied as proxies for climate reconstruction, but the climate and environmental signals of tree-ring stable isotopes in this region still need further exploration.
Article
Energy & Fuels
Qian Wang, Shifeng Dai, David French, Baruch Spiro, Ian Graham, Jingjing Liu
Summary: The thermal effects of a quartz intrusion during the Yanshanian Orogeny on coal mines in the Daqingshan Coalfield in Inner Mongolia have caused changes in coal quality and chemical characteristics. As the distance from the intrusion decreases, there is an increase in vitrinite reflectance values and a decrease in volatile matter content in the coal mines. The organic carbon isotopes in the coals also vary with the distance from the intrusion.
INTERNATIONAL JOURNAL OF COAL GEOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Yixin Dong, Ying Cui, Jiuyuan Wang, Hongde Chen, Feifei Zhang, Yuyang Wu, Ziheng Li, Peng Zhu, Shijun Jiang
Summary: The carbon isotope records of C-3 land plants in Paleozoic sediments and marine carbonates provide insights into the global carbon cycle. The data suggest an increase in organic carbon burial, controlled by factors such as sea level, nutrient availability, and life innovation. Proxy-based paleotemperature records indicate a correlation between elevated paleotemperatures and higher pCO2 levels in the Late Devonian.
EARTH-SCIENCE REVIEWS
(2021)
Article
Geosciences, Multidisciplinary
Jie Li, Zhonghe Pang
Summary: This study systematically monitored and modeled the elevation effect of stable isotopes in precipitation of the eastern margin of the Tibetan Plateau. The results showed a higher elevation gradient in this region compared to the interior part of the Tibetan Plateau, which may be caused by significant local moisture recycling.
SCIENCE CHINA-EARTH SCIENCES
(2022)
Article
Environmental Sciences
Semra Bakkaloglu, Dave Lowry, Rebecca E. Fisher, Malika Menoud, Mathias Lanoiselle, Huilin Chen, Thomas Rockmann, Euan G. Nisbet
Summary: This study characterizes the carbon isotopic signatures of methane waste sources and explores the use of hydrogen isotopes for waste source identification. The results show distinct signatures for different waste sources, providing valuable information for regional modeling.
ATMOSPHERIC ENVIRONMENT
(2022)
Article
Multidisciplinary Sciences
Scott L. Fedick, Louis S. Santiago
Summary: The Yucatan Peninsula experienced a series of droughts during the Classic Maya period, which may have contributed to the disruption or collapse of Maya polities. While climate change alone cannot explain the political turmoil of the time, strong droughts could have resulted in limited food availability, leading to famine, migration, and societal decline. This study reveals that there was a greater diversity of food sources beyond maize available to the Maya during the drought, allowing for a continuing food supply under most conditions.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Environmental Sciences
Evelyn Raquel Salas-Acosta, Jose Luis Andrade, Jorge Adrian Perera-Burgos, Roberth Us-Santamaria, Bernardo Figueroa-Espinoza, Jorge M. Uuh-Sonda, Eduardo Cejudo
Summary: This study used the thermal dissipation method to measure transpiration in a tropical dry deciduous forest in Yucatan, Mexico. It found that transpiration changes over time and is higher in the rainy season. Diameter at breast height was a reliable way of estimating transpiration. Direct measurement of transpiration would improve the accuracy of water availability estimation and assessment of vegetation responses to climate change.
Article
Environmental Sciences
Benigno Rivera-Hernandez, Vianey Gonzalez-Jimenez, Eugenio Carrillo-Avila, Rene Garruna-Hernandez, Jose Luis Andrade, Victor Hugo Quej-Chi, Jesus Arreola-Enriquez
Summary: This study analyzed the effects of irrigation management on the growth and yield of Persian lime. The results showed that different soil moisture tensions during different phenological stages significantly influenced variables such as leaf water potential, fruit weight, fruit yield, and water footprint. The study recommended specific soil moisture tensions for irrigation during different stages to optimize fruit production and quality, while also emphasizing the importance of efficient use of blue water to reduce water consumption.
Article
Biochemistry & Molecular Biology
Gerardo Carrillo-Niquete, Jose Luis Andrade, Laura Hernandez-Terrones, Victor Cobos-Gasca, Gabriela Fuentes, Jorge M. Santamaria
Summary: Copper and zinc have a high demand in the industry, but can cause severe damage to fauna and flora at high concentrations. Salvinia minima can accumulate copper and zinc in a relatively short time, but long-term accumulation negatively impacts the appearance, physiology, and growth of the plant species, with copper having a more severe effect.
Review
Ecology
G. Darrel Jenerette, Kurt E. Anderson, Mary L. Cadenasso, Mark Fenn, Janet Franklin, Michael L. Goulden, Loralee Larios, Stephanie Pincetl, Helen M. Regan, Sergio J. Rey, Louis S. Santiago, Alexandra D. Syphard
Summary: Wildland-urban interfaces (WUIs) are areas where highly developed and minimally developed lands are juxtaposed, and they play a significant role in environmental and ecological change and require careful planning and management. Understanding the dynamics and coupling between cities and surrounding wildlands in WUIs is crucial for reducing environmental hazards, preserving ecosystem services, and conserving biodiversity.
FRONTIERS IN ECOLOGY AND THE ENVIRONMENT
(2022)
Article
Horticulture
Benigno Rivera, Victor H. Quej, Roberto Gutierrez, Jose L. Andrade, Eugenio Carrillo, Vianey Gonzalez, Edelia C. Villarreal
Summary: This study evaluated the physical and chemical properties of five local organic substrates as substitutes for the commercial substrate Peat Moss in watermelon seedling production. The results showed that cacao husk and vermicompost substrates performed the best in terms of morphological indicators and morphological quality indexes, similar to the commercial substrate. Compost had the lowest stability and efficiency. These local substrates, cacao husk and vermicompost, can replace Peat Moss as a viable alternative for rural farmers in watermelon seedling production, as they are easy to obtain and low-cost.
HORTICULTURA BRASILEIRA
(2022)
Article
Multidisciplinary Sciences
David S. Ellsworth, Kristine Y. Crous, Martin G. De Kauwe, Lore T. Verryckt, Daniel Goll, Sonke Zaehle, Keith J. Bloomfield, Philippe Ciais, Lucas A. Cernusak, Tomas F. Domingues, Mirindi Eric Dusenge, Sabrina Garcia, Rossella Guerrieri, F. Yoko Ishida, Ivan A. Janssens, Tanaka Kenzo, Tomoaki Ichie, Belinda E. Medlyn, Patrick Meir, Richard J. Norby, Peter B. Reich, Lucy Rowland, Louis S. Santiago, Yan Sun, Johan Uddling, Anthony P. Walker, K. W. Lasantha K. Weerasinghe, Martine J. van de Weg, Yun-Bing Zhang, Jiao-Lin Zhang, Ian J. Wright
Summary: Phosphorus limitation is common in tropical forests and incorporating phosphorus constraints in terrestrial biosphere models improves predictive power. The authors demonstrate the dependency of photosynthesis on leaf nitrogen and phosphorus concentrations and find that phosphorus regulation of photosynthetic capacity is similar across continents. Implementing phosphorus constraints in the ORCHIDEE-CNP model reduces photosynthesis in tropical and subtropical regions by 36%.
NATURE COMMUNICATIONS
(2022)
Article
Plant Sciences
Joel Flores, Oscar Briones, Jose Luis Andrade
Summary: This article reviews the current status of ecophysiological studies on CAM plants in Mexico, pointing out that only a small fraction of Mexican CAM plants have been studied. Studies have mainly focused on CAM species of Cactaceae, Bromeliaceae, Asparagaceae, and Orchidaceae, with a primary focus on germination, photosynthesis, and water relations. However, there have been few physiological studies on CAM seedlings in Mexico and few studies using stable isotopes of water and carbon to study water and carbon stable isotopes of CAM plants in the field. More field and laboratory studies are needed to understand the physiological responses and plasticity of CAM plants to multiple stress factors for predicting plant responses to global climate change.
BOTANICAL SCIENCES
(2022)
Review
Plant Sciences
Gerhard Zotz, Jose Luis Andrade, Helena J. R. Einzmann
Summary: This article reviews the importance of crassulacean acid metabolism (CAM) among epiphytes in current climatic conditions and explores the prospects under global change. The authors question the view of a disproportionate importance of CAM among epiphytes and its role as a 'key innovation' for epiphytism, but identify ecological conditions in which epiphytic existence seems to be contingent on the presence of this photosynthetic pathway. The possible divergent responses of CAM and C-3 epiphytes to future changes in climate and land use are discussed with experimental evidence and long-term descriptive community studies.
Article
Entomology
Alejandro Perez-Morfi, Azucena Canto, Richard E. Feldman, Luis A. Medina-Medina, Humberto Estrella-Maldonado, Rosalina Rodriguez, Jose Luis Andrade
Summary: Floral diversity helps honey bees meet their nutritional requirements, but infection by Nosema spp. can hinder their ability to absorb nutrients. Nosemosis is widespread in commercial apiaries in the Yucatan Peninsula, Mexico, but there have been no reports of colony deaths. This study suggests that natural stored bee bread in honey bee colonies from the Yucatan Peninsula may play a role in their survival and reducing Nosema spp. spore load.
ENTOMOLOGIA EXPERIMENTALIS ET APPLICATA
(2023)
Article
Agronomy
Stuart T. Schwab, Kenjiro W. Quides, Camille E. Wendlandt, Jerry Trinh, Matthew Sung, Paola Cardenas, Michael Torres, Louis S. Santiago, Loralee Larios, Joel L. Sachs
Summary: This study investigates how symbiotic relationships mediate plant responses to drought. The results show that root nodule symbiosis can benefit plants by mitigating carbon strain during drought-induced mortality events. This finding is significant for understanding the impact of changing symbiotic relationships on plant mortality under climate change scenarios.
Article
Biodiversity Conservation
Leonie Schonbeck, Marc Arteaga, Humera Mirza, Mitchell Coleman, Denise Mitchell, Xinyi Huang, Haile Ortiz, Louis S. Santiago
Summary: Plant physiology is important for assessing the health status of plant species, but reference points are needed for meaningful interpretation. This article discusses the best practices for measuring plant physiological status and reference points in conservation biology.
CONSERVATION PHYSIOLOGY
(2023)
Article
Environmental Sciences
Julio A. Salas-Rabaza, Jose Luis Andrade, Roberth Us-Santamaria, Pablo Morales-Rico, Gisela Mayora, Francisco Javier Aguirre, Vicente Fecci-Machuca, Eugenia M. Gade-Palma, Frederic Thalasso
Summary: This study investigated the impacts of concentration buildup and leaks on semi-rigid closed chamber methods for measuring methane and carbon dioxide fluxes from tree stems. The results showed that concentration buildup had a significant impact on methane flux measurements, while carbon dioxide flux measurements were relatively less affected. The combined effects of leaks and concentration buildup led to an underestimation of methane emissions by around 40% and carbon dioxide emissions by around 22%.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Biology
Peter C. C. Ibsen, Louis S. S. Santiago, Sheri A. A. Shiflett, Mark Chandler, G. Darrel Jenerette
Summary: Urbanization leads to the formation of new ecosystems with unique species compositions and environments. The impact of irrigation on functional traits across multiple species in urban ecosystems remains unclear. This study found that urban irrigation influences the plasticity of functional traits in trees, with species adapting to increased carbon-gain trait and greater water loss in irrigated desert-like environments. These findings suggest that irrigated urban environments can alter trait responses and create novel dynamics compared to native ecosystems.
Article
Forestry
Leonie C. Schonbeck, Louis S. Santiago