Article
Environmental Sciences
T. I. Kahma, A. Norkko, I. F. Rodil
Summary: This study investigated the dietary variability and degradation and incorporation of macroalgae in key macroinvertebrate consumers. The results showed that drifting filamentous macroalgae influenced the dietary composition of benthic macroinvertebrate consumers. The degradation of Fucus vesiculosus was relatively slow, but after 2-3 weeks, there was detectable incorporation of Fucus-derived matter into epigrazers and detritivorous bivalves.
ESTUARIES AND COASTS
(2023)
Article
Ecology
Ethan M. Baruch, Heather L. Bateman, David A. Lytle, David M. Merritt, John L. Sabo
Summary: Ecosystems are managed and studied based on constructed boundaries to conceptualize patterns of interest at a certain scale and scope. Resource exchange across permeable boundaries can significantly impact ecosystem integration and stability, influencing the support of consumers at different trophic levels. This integrated ecosystem framework has broad applications for ecological research and management strategies globally.
Article
Biodiversity Conservation
Rongliang Zhang, Hua Zhang, Hui Liu, Jianmin Zhao
Summary: Artificial reefs can support trophic structure and pathways similar to those of natural reefs, although there may be spatial differences in pathway magnitudes. The study shows that the development of artificial reef systems over the years enables them to be comparable to natural reef systems. Future research should focus on comparing specific trophic compartments and combining trophic ecology with community structure to better understand the development of artificial reef systems.
ECOLOGICAL INDICATORS
(2021)
Article
Environmental Sciences
Lamine Boumaiza, Safouan Ben Ammar, Romain Chesnaux, Randy L. Stotler, Bernhard Mayer, Frederic Huneau, Karen H. Johannesson, Jana Levison, Kay Knoeller, Christine Stumpp
Summary: This study investigates the sources and transformation processes of nitrate (NO3) contamination in a typical Mediterranean coastal agricultural area in Tunisia using multiple isotopic tracers and a Bayesian isotope MixSIAR model. The results show that the measured NO3 concentrations in groundwater are above the natural baseline threshold, indicating anthropogenic influence. The isotopic analysis suggests that manure, soil organic matter, and sewage are the potential sources of NO3, with manure-derived NO3 being the dominant source. The study also reveals the occurrence of denitrification and nitrification in the groundwaters, reflecting the complexity of interactions within the coastal aquifer.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Geosciences, Multidisciplinary
Yanwu Pei, Laiming Huang, Ming'an Shao, Xiaoxu Jia, Xinzhai Tang, Yinglong Zhang, Yanhui Pan
Summary: In this study, the water use patterns of different aged Salix psammophila in a semi-arid region were investigated. It was found that the water sources used by the plants varied depending on their age and the season. The results highlight the importance of considering the age-dependent water use pattern of S. psammophila in future afforestation plans.
Article
Engineering, Civil
Benjamin Nyilitya, Stephen Mureithi, Marijn Bauters, Pascal Boeckx
Summary: This study identified the main sources of nitrate in the Nyando River basin of Kenya and emphasized the importance of optimizing animal manure use, land conservation measures, and improving sanitation systems to control excess nitrate discharge. Multiple methods, including hydrochemistry, stable isotopes, and a Bayesian mixing model, were used to determine nitrate sources and their spatial-temporal variation in the basin, revealing the significance of manure and sewage as leading sources of nitrate input.
JOURNAL OF HYDROLOGY
(2021)
Article
Environmental Sciences
Yuchen Li, Fangfang Zhu, Yu Wang, Jinhua Cheng
Summary: This study investigates the impact of plant water strategies and forest ecosystem adaptability under changing hydrological conditions. Isotope analysis and modeling revealed significant differences in water uptake depth and strategies among different tree species in different seasons, with some species showing the ability to access water from deep soil layers during dry seasons and displaying strong ecological plasticity.
Article
Forestry
Zhixue Chen, Guohui Wang, Yanhui Pan, Yuying Shen, Xianlong Yang
Summary: The study corrected hydrogen isotope offsets for Salix psammophila and Caragana korshinskii using the soil hydrogen and oxygen isotope waterline, finding notable differences in water-use patterns between the two shrubs. The combination of delta 18O and corrected delta 2H was identified as the best data type to determine the water use patterns of C. korshinskii.
Article
Ecology
Akira Kurasawa, Yuji Onishi, Keisuke Koba, Keitaro Fukushima, Hiromi Uno
Summary: An increasing number of studies have examined the ecological influence of semelparous and iteroparous fish migrations on spawning streams. These migrations not only contribute carcasses of spent adults, but also provide nutrients that support stream communities. This study evaluated the ecological influence of an iteroparous three-lips fish in an alluvial stream through field experiments. The results showed that the fish increased nutrient concentrations, organic matter levels, and densities of certain organisms in the stream. The study suggests that further research is needed to understand the complex ways in which migratory fish influence stream ecosystems.
FRESHWATER BIOLOGY
(2023)
Article
Environmental Sciences
Wanning Zhao, Deqing Yang, Qiang Sun, Yandong Gan, Liyong Bai, Shuangshuang Li, Dongmei Liu, Jiulan Dai
Summary: Accurately identifying nitrate sources is crucial for controlling non-point source pollution in watersheds. This study used multiple isotope techniques, hydrochemistry characteristics, land use information, and a stable isotope mixing model to identify the sources and contributions of nitrate in an agricultural watershed in China. The results showed that manure and sewage, ammonium fertilizers, and soil organic nitrogen were the mixed sources of nitrate, with manure and sewage being the main contributors throughout the watershed and groundwater.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Peijun Shi, Haoqi Gai, Zhi Li
Summary: This study investigates the partitioning of soil water balance (SWB) and quantifies the effects of afforestation by combining stable and radioactive water isotopes. The results show that apple orchards significantly increase evapotranspiration (ET), while decreasing soil water storage and deep drainage. The change in SWB is closely related to the water uptake strategies of apple trees.
WATER RESOURCES RESEARCH
(2023)
Article
Soil Science
Junming Liu, Zhuanyun Si, Lifeng Wu, Jinsai Chen, Yang Gao, Aiwang Duan
Summary: The experiment revealed differences in water uptake depth of winter wheat under High-Low Seed Beds Cultivation (HLSC) pattern, with part of the irrigation water infiltrating below 60 cm and becoming less available for the plants.
SOIL & TILLAGE RESEARCH
(2021)
Article
Environmental Sciences
Longran Chang, Xiaoxing Ming, Chris Groves, Brian Ham, Chaofu Wei, Pingheng Yang
Summary: This study investigates the nitrate fate and its decadal change in a rural karst basin in Chongqing, southwestern China, using hydrochemistry and dual nitrate isotopes. The results show that enhanced rural tourism activities and land use changes have led to a shift in nitrogen sources and increased nitrate pollution. The findings have significant implications for minimizing environmental health risks in drinking water when rural tourism activities are increasing.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Xiaoqi Kang, Yuan Niu, Hui Yu, Peng Gou, Qinyao Hou, Xiaofeng Lu, Yali Wu
Summary: This study investigates the sources and transformations of nitrate in an intensive agricultural region through high-frequency sampling, isotope analysis, and Bayesian modeling, revealing the complex changes in nitrate sources and transformations during rainfall events. The results suggest the dominance of nitrification process in nitrate transformations, with the occurrence of denitrification after rainfall. Livestock manure and groundwater are found to be major contributors to nitrate, highlighting the importance of regulating their use to mitigate anthropogenic nitrogen loading.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Zhendong Hong, Shengyan Ding, Qinghe Zhao, Zihan Geng, Pengwei Qiu, Jian Zhang, An Wang, Panpan Zhang
Summary: This study examines the contribution of multiple water sources to riparian wetlands in the lower Yellow River using hydrochemistry and isotopic methods. The results show that the Yellow River is the main water source for riparian wetlands, but its contribution varies spatially and temporally. Climate and hydrological variables, particularly suspended sediment content, have a significant impact on water recharge.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
David X. Soto, Geoff Koehler, Leonard Wassenaar, Keith A. Hobson
SCIENCE OF THE TOTAL ENVIRONMENT
(2019)
Article
Ecology
David X. Soto, Eva Decru, Jos Snoeks, Erik Verheyen, Lora Van de Walle, Jolien Bamps, Taylor Mambo, Steven Bouillon
ECOLOGY AND EVOLUTION
(2019)
Article
Environmental Sciences
Asuncion Romanelli, David X. Soto, Ioannis Matiatos, Daniel E. Martinez, Soledad Esquius
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Ornithology
Donald F. McAlpine, David X. Soto, James G. Wilson
Article
Agriculture, Multidisciplinary
Irene Paredes, Neus Otero, Albert Soler, Andy J. Green, David X. Soto
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2020)
Article
Environmental Sciences
Esperanca Gacia, David X. Soto, Romero Roig, Jordi Catalan
Summary: The common reed is not only a biomonitor of sediment pollution but also shows potential for assessing air pollution. Panicles and roots have higher concentrations of trace metals, with panicles indicating recent airborne pollution and roots indicating long-term transport of pollutants. This suggests that common reed could be a dual biomonitor for both air and sediment pollution.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Geochemistry & Geophysics
P. M. Wynn, S. Ambler, I. Grefe, D. X. Soto, B. W. J. Surridge, R. I. Gabitov, P. A. Barker, J. Anwar, A. Quin, M. G. Pereira, H. K. Grant
Summary: The movement of nitrate through the vadose zone, particularly in karst terrain, poses significant implications for environmental and human health. Speleothems in karst cave settings offer a valuable opportunity to obtain records of vadose zone nitrate contamination, with analyses of isotopes providing critical insights into nitrate source, biogeochemical processing, and hydrological pathways. Contemporary studies at Cuevacubio del Llanio in Spain demonstrate the potential for speleothem carbonate to provide a detailed record of vadose zone nitrate dynamics.
Article
Ecology
Arthur A. D. Broadbent, Michael Bahn, William J. Pritchard, Lindsay K. Newbold, Tim Goodall, Andrew Guinta, Helen S. K. Snell, Irene Cordero, Antonios Michas, Helen K. Grant, David X. Soto, Rudiger Kaufmann, Michael Schloter, Robert Griffiths, Richard D. Bardgett
Summary: Climate change disproportionately affects mountain ecosystems, leading to reductions in winter snow cover and earlier snowmelt, with shrub expansion exacerbating these impacts on soil properties. Despite seasonal changes, shifts in vegetation can modulate belowground effects of future alpine climate change.
Article
Environmental Sciences
Lizaan de Necker, Luc Brendonck, Ruan Gerber, Pieter Lemmens, David X. Soto, Yoshinori Ikenaka, Mayumi Ishizuka, Victor Wepener, Nico J. Smit
Summary: Climate change and droughts threaten the ecology and resilience of saline lakes globally. However, research on their ecological response to climatic events in the Global South is lacking. This study investigated the effect of a severe drought in South Africa on the trophic structure of fish communities in a saline shallow lake. The results showed that drought altered the availability of basal resources and affected the food web, but did not significantly alter the fish community itself.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Editorial Material
Chemistry, Inorganic & Nuclear
Yuliya Vystavna, Johannes Cullmann, Keith Hipel, Jodie Miller, David X. Soto, Astrid Harjung, Andrew Watson, Alexandra Mattei, Seifu Kebede, Maksym Gusyev
ISOTOPES IN ENVIRONMENTAL AND HEALTH STUDIES
(2022)
Article
Environmental Sciences
Wondie Zelalem, Wassie Anteneh, Minwyelet Mingist, Mulugeta Kibret, Enyew Adgo, Jan Nyssen, Elie Verleyen, David X. Soto, Steven Bouillon, Alain De Vocht
Summary: This study investigates the nursery grounds, habitat shifts, and potential energy sources for juvenile Labeobarbus species in the tributary rivers of Lake Tana. The findings indicate that the different size classes of juveniles exhibit variations in habitat use and food sources, influenced by seasonality and water flow velocity.
JOURNAL OF GREAT LAKES RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Grzegorz Skrzypek, Colin E. Allison, John K. Bohlke, Luana Bontempo, Paul Brewer, Federica Camin, James F. Carter, Michelle M. G. Chartrand, Tyler B. Coplen, Manfred Groning, Jean-Francois Helie, Germain Esquivel-Hernandez, Rebecca A. Kraft, Dana A. Magdas, Jacqueline L. Mann, Juris Meija, Harro A. J. Meijer, Heiko Moossen, Nives Ogrinc, Matteo Perini, Antonio Possolo, Karyne M. Rogers, Arndt Schimmelmann, Aldo Shemesh, David X. Soto, Freddy Thomas, Robert Wielgosz, Michael R. Winchester, Zhao Yan, Philip J. H. Dunn
Summary: This paper proposes the minimum requirements for publishing HCNOS stable-isotope delta results. To ensure longevity and reusability of published data, a comprehensive description of analytical procedure, traceability, data processing, and uncertainty evaluation is necessary.
PURE AND APPLIED CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
David X. Soto, Luis J. Araguas-Araguas, Liang-Feng Han, Leonard I. Wassenaar
Summary: This study evaluated the impact of storage protocols on carbon isotopes in groundwater and found that using plastic sampling bottles for storage led to contamination and underestimated age estimations. In contrast, using glass bottles for storage can avoid contamination and maintain higher analytical precision.
ISOTOPES IN ENVIRONMENTAL AND HEALTH STUDIES
(2023)
Article
Biodiversity Conservation
B. Hayden, S. Tongnunui, F. W. H. Beamish, P. Nithirojpakdee, D. X. Soto, R. A. Cunjak
Summary: Tropical freshwater ecosystems in headwater streams are mainly supported by autochthonous resources, with both allochthonous and autochthonous specialists present. Fish isotopic diversity increases with stream size, along with an increase in maximum trophic position.