Article
Agronomy
Damian Fernandez-Rodriguez, David Paulo Fangueiro, David Pena Abades, Angel Albarran, Jose Manuel Rato-Nunes, Antonio Lopez-Pineiro
Summary: This study assessed the greenhouse gas emissions from rice fields amended with composted two-phase olive mill waste (C-TPOW) in Mediterranean conditions. The results showed that compost reduced CO2 emissions but increased CH4 and N2O emissions. However, there were no significant differences in global warming potential (GWP) and yield-scaled GWP between the compost and control treatments after three years.
Article
Environmental Sciences
Tyler L. Anthony, Whendee L. Silver
Summary: Although drained agricultural peatlands only occupy 1% of agricultural land, they are responsible for about one third of global cropland greenhouse gas emissions. Recent studies have shown that greenhouse gas fluxes from these peatlands vary greatly over time. The relationship between these fluctuations and the locations of emissions is poorly understood but may provide insights into the patterns and drivers of high greenhouse gas emissions from agricultural peatland soils.
Article
Environmental Sciences
Ziqian Li, Lingwei Kong, Liping Hu, Jun Wei, Xinzhi Zhang, Weijie Guo, Wenqing Shi
Summary: In this study, a bibliometric review and global-scale analysis were conducted to explore the potential approaches for controlling greenhouse gas (GHG) emissions in constructed wetlands (CWs). The research on CWs has evolved through three stages over the past 15 years: GHG emission level assessment, mechanisms, and control. It was found that the type of CWs is closely related to GHG emissions, with different types emitting different GHGs. Optimizing CW operation can synergistically reduce GHG emissions while enhancing pollutant removal.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Anna Pytlak, Anna Szafranek-Nakonieczna, Weronika Goraj, Izabela Sniezynska, Aleksandra Krazala, Artur Banach, Ivica Ristovic, Miroslaw Slowakiewicz, Zofia Stepniewska
Summary: Changes in the energy market are causing a projected reduction in lignite excavation in the near future. The flooding of lignite mines left abandoned can potentially release greenhouse gases, which is a growing environmental concern. Research has shown that different types of lignite have varying greenhouse gas emissions, with lignite with shorter existence emitting the lowest amount of gases with global warming potential.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
V Amaral, T. Ortega, C. Romera-Castillo, J. Forja
Summary: The Guadalete estuary in Spain was found to be a source of CO2, CH4, and N2O to the atmosphere, with CH4 showing the strongest relationship with DOM composition. Terrestrial and microbial humic-like substances with increasing aromaticity were linked to higher pCO2 levels, while N2O was related to the protein-like fraction and humic-like material from anthropogenic activities. This indicates a possible coupling between benthic fluxes of GHGs and DOM in this estuarine system, highlighting the importance of considering DOM composition in studying GHGs distribution in estuaries for better understanding of their roles in response to climate change.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Alexander J. Schmithausen, Hauke F. Deeken, Katrin Gerlach, Manfred Trimborn, Kirsten Weiss, Wolfgang Buescher, Gerd-Christian Maack
Summary: This study investigated the formation of greenhouse gases during the ensiling process, focusing on the variations in CO2, N2O, and CH4 concentrations in forage. Grass and lucerne were ensiled at different dry matter concentrations in laboratory-scale barrels, showing that low DM concentration led to faster CO2 production, while lucerne forage and higher DM concentrations resulted in increased N2O concentrations. The study also found that butyric acid formation by clostridia contributed to CH4 formation, with lucerne silage exhibiting significantly higher concentrations from day 13 of ensiling. These findings highlight the impact of malfermentation on greenhouse gas emissions during ensiling.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Agriculture, Multidisciplinary
Alice F. Charteris, Paul Harris, Karina A. Marsden, Ian M. Harris, Ziwei Guo, Deborah A. Beaumont, Helena Taylor, Gianmarco Sanfratello, Davey L. Jones, Sarah C. M. Johnson, Mick J. Whelan, Nicholas Howden, Hadewij Sint, David R. Chadwick, Laura M. Cardenas
Summary: Greenhouse gas fluxes from livestock grazed pasture soils exhibit high variability, influenced by local conditions. Nitrogen, ammonia, soil moisture, etc. play significant roles in regulating fluxes on different pastures for various greenhouse gases.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2021)
Article
Environmental Sciences
Mohammad Atif Khan, Sanjeev Kumar, Rajdeep Roy, Satya Prakash, Aneesh A. Lotliker, Sanjiba Kumar Baliarsingh
Summary: The potential effects of tidal and diel cycles on carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) concentrations and fluxes in tropical estuaries are poorly understood. This study conducted sampling for nine consecutive days in the Mahanadi estuary of India and found that tidal forcing affected CO2 and CH4 concentrations, with higher concentrations during low tide. CO2 concentrations increased with decrease in tidal height, possibly due to higher freshwater contribution. N2O showed no significant variability with tidal cycle or water level fluctuation. The study area was a source of greenhouse gases to the atmosphere, except for the offshore region.
MARINE POLLUTION BULLETIN
(2023)
Article
Agronomy
Carolina Fabbri, Anna Dalla Marta, Marco Napoli, Simone Orlandini, Leonardo Verdi
Summary: Precision fertilization, including variable-rate fertilization, is a promising approach to reduce the environmental impacts of nitrogen fertilization. This study evaluated the short-term response of greenhouse gas emissions following variable-rate fertilization on barley. The results showed that variable-rate fertilization can maintain high yields with a significant reduction in nitrogen application and improved nitrogen use efficiency. However, the sensor-based nitrogen application did not result in significantly different greenhouse gas emissions compared to conventional fertilization, suggesting the need for further research.
Article
Engineering, Environmental
Nicholas E. Ray, Robinson W. Fulweiler
Summary: In oyster habitats, the sediments show peak carbon dioxide production in spring and summer, as well as consistent methane release into the water column, while nitrous oxide is generally absorbed with occasional release in spring. The overall impact of oysters on sediment greenhouse gas cycling in temperate regions is considered negligible.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Nicholas E. Ray, Meredith A. Holgerson
Summary: Inland waters, especially small ponds, have a significant but poorly understood role in global greenhouse gas emissions. This study conducted high-resolution temporal sampling and found that temperate constructed ponds are a net source of greenhouse gases, with methane emissions being highly variable within seasons. The study suggests that building ponds to favor mixed conditions can help minimize the global greenhouse gas footprint of future pond construction.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Green & Sustainable Science & Technology
Chinedu Increase Onwachukwu, Kit-Ming Isabel Yan, Kerui Tu
Summary: The study found a significant impact of trade liberalization on environmental quality, challenging the use of a single indicator to assess this relationship.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Environmental Sciences
Weifeng Gao, Dawen Gao, Tijiu Cai, Hong Liang
Summary: This study investigated the effects of different permafrost wetland types on greenhouse gas emissions in the Daxing'an Mountains. The results showed that N2O emissions were influenced by the NO3--N content, while CO2 emissions were driven by soil temperature, water table level, and NO3--N content. CH4 emissions were affected by soil temperature and water table level. The study concluded that the permafrost wetland types significantly affected the emissions of N2O, CO2, and CH4.
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2022)
Review
Environmental Sciences
Danlian Huang, Lan Gao, Min Cheng, Ming Yan, Gaoxia Zhang, Sha Chen, Li Du, Guangfu Wang, Ruijin Li, Jiaxi Tao, Wei Zhou, Lingshi Yin
Summary: Composting plays a crucial role in carbon and nitrogen conservation, but losses of carbon and nitrogen still occur during the process. Researchers have explored ways to reduce these losses and enhance conservation through amendments, and proposed potential mechanisms for conservation. Evaluating the contribution of composting requires a comprehensive assessment, and the impact of compost clinker on carbon and nitrogen sequestration capacity needs further investigation.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Plant Sciences
Bonginkosi S. Vilakazi, Rebecca Zengeni, Paramu Mafongoya, Napo Ntsasa, James Tshilongo
Summary: There is limited research on greenhouse gas emissions in dryland agriculture in South Africa, hindering policy formulation for mitigation and adaptation in the sub-Saharan region. The study aimed to assess CO2, N2O, and CH4 effluxes under different nitrogen fertilizer management in conventional tillage and no-till systems across seasons. Higher GHG emissions in summer were attributed to soil temperature and moisture, with tillage intensity and climatic conditions influencing emissions direction. Conservation tillage, particularly no-till at 120 kg N ha(-1), is recommended for lower emissions, especially during summer.
JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION
(2021)
Article
Plant Sciences
Katerina Machacova, Libor Borak, Thomas Agyei, Thomas Schindler, Kaido Soosaar, Ulo Mander, Claudine Ah-Peng
Summary: The study found that in a tropical lowland rainforest situated on a basaltic lava flow on Reunion Island, trees and cryptogams have a significant potential for absorbing CH4 and N2O, impacting greenhouse gas fluxes. The volcanic tropical lowland rainforest appears to be an important CH4 sink, as well as a possible N2O sink.
Article
Ecology
Riin Tamme, Meelis Partel, Urmas Koljalg, Lauri Laanisto, Jaan Liira, Ulo Mander, Mari Moora, Ulo Niinemets, Maarja Opik, Ivika Ostonen, Leho Tedersoo, Martin Zobel
Summary: The distribution of nitrogen-fixing plant species worldwide shows regional hotspots and coldspots related to environmental conditions and biogeographical history. The diversity and relative richness of nitrogen-fixing plants are highest in warm and wet climates, dry biomes, Australasia, warm and dry climates, tropical and temperate grasslands, and Eurasia.
GLOBAL ECOLOGY AND BIOGEOGRAPHY
(2021)
Letter
Ecology
Cindy E. Prescott, Sue J. Grayston, Helja-Sisko Helmisaari, Eva Kastovska, Christian Korner, Hans Lambers, Ina C. Meier, Peter Millard, Ivika Ostonen
TRENDS IN ECOLOGY & EVOLUTION
(2021)
Article
Plant Sciences
Katerina Machacova, Thomas Schindler, Kaido Soosaar
Article
Forestry
Azadeh Rezapour, Marika Truu, Martin Maddison, Gristin Rohula-Okunev, Arvo Tullus, Veiko Uri, Uelo Mander, Ivika Ostonen
Summary: This study investigated the morphological variation in absorptive roots in drained peatland forests and found that the dominating tree species had a significant effect on the variation. The distance from the ditch also affected the absorptive root morphological traits, indicating a potential shift in nutrient foraging. However, soil physical and chemical properties were not dependent on the distance from the ditch. The study also revealed a species-specific response in absorptive root morphological traits to soil properties.
Article
Agronomy
A. Krasnova, Ue. Mander, S. M. Noe, V. Uri, D. Krasnov, K. Soosaar
Summary: This study assessed the impact of the 2018 heatwave on the carbon exchange of different forest types and a clear-cut area in Europe. The results showed that the carbon exchange varied among forest types, with coniferous forests being the most resistant and mixed forests being the most affected. These findings are important for understanding the effects of global climate change on ecosystems.
AGRICULTURAL AND FOREST METEOROLOGY
(2022)
Article
Forestry
K. Aun, M. Kukumagi, M. Varik, M. Uri, M. Buht, J. Aosaar, A. Padari, A. Sepaste, K. Soosaar, H. Becker, V Uri
Summary: Clear-cutting is a widely used silvicultural method in the Nordic and Baltic countries, and it has a significant impact on soil carbon storage. The carbon accumulation ability of young stands varies depending on the site, leading to a high variability in annual net ecosystem productivity among stands of similar ages. The study reveals the existence of a carbon balance point at a stand age of 6 years.
SCANDINAVIAN JOURNAL OF FOREST RESEARCH
(2022)
Article
Environmental Sciences
Reti Ranniku, Thomas Schindler, Jordi Escuer-Gatius, Ulo Mander, Katerina Machacova, Kaido Soosaar
Summary: Nutrient-rich northern peatlands, once drained for enhancing forest productivity, result in peatland soils becoming methane (CH4) sinks and nitrous oxide (N2O) sources. In addition to soil, tree stems can also emit CH4 and N2O. This study investigates the winter-time dynamics of CH4 and N2O fluxes in a drained peatland forest, considering both soil and stem emissions. The results show that tree stems are a net source of CH4 and N2O during winter, and their emissions can offset the CH4 sink and contribute to forest floor N2O emissions.
ENVIRONMENTAL RESEARCH COMMUNICATIONS
(2023)
Article
Plant Sciences
Chao Fang, Niel Verbrigghe, Bjarni D. D. Sigurdsson, Ivika Ostonen, Niki I. W. Leblans, Sara Maranon-Jimenez, Lucia Fuchslueger, Pall Sigurosson, Kathiravan Meeran, Miguel Portillo-Estrada, Erik Verbruggen, Andreas Richter, Jordi Sardans, Josep Penuelas, Michael Bahn, Sara Vicca, Ivan A. A. Janssens
Summary: Long-term soil warming experiments in a subarctic grassland revealed that the increase in temperature led to soil nitrogen loss, resulting in decreased above and belowground plant productivity.
Article
Biotechnology & Applied Microbiology
Anne Menert, Triin Korb, Kaja Orupold, Alar Teemusk, Holar Sepp, Ulo Mander, Tanel Ilmjarv, Jaak Truu, Paarn Paiste, Kalle Kirsimae, Terje Menert, Inna Kamenev, Eeva Heinaru, Ain Heinaru, Sirli Sipp Kulli, Maia Kivisaar
Summary: This study investigates the impact of microorganisms on the decomposition of organic matter and leaching/precipitation of metals in Estonian sedimentary deposits. It reveals the microbial diversity associated with methane production and metal leaching and explains the role of betaine in the biodegradation of organic matter. A tentative mechanism for simultaneous organic matter degradation and methanogenesis is proposed.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2023)
Article
Environmental Sciences
Bruno Montibeller, Michael Marshall, Ulo Mander, Evelyn Uuemaa
Summary: This study analyzed the monthly trends in gross primary productivity and evapotranspiration in undisturbed core forest areas in Europe. The results showed that increases in productivity during spring and autumn led to improved water-use efficiency, but these increases were not enough to compensate for decreases in summer. Overall, around 20% of forest areas exhibited a net decrease in productivity during summer.
COMMUNICATIONS EARTH & ENVIRONMENT
(2022)
Review
Environmental Sciences
Mohamed Abdalla, Ziyin Shang, Mikk Espenberg, Xiaoqing Cui, Ulo Mander, Pete Smith
Summary: This study aims to estimate the BNE from Chinese cropland soils and to assess the impacts of crop type, management, and soil quality indicators on BNE. The results showed that crop type has a significant impact on BNE, and it is variably controlled by soil quality indicators, climate, and management. Estimating the BNE at a national level is suggested to reduce uncertainty in total N2O emissions from Chinese croplands.
ENVIRONMENTAL SCIENCE-ATMOSPHERES
(2022)
Article
Forestry
Marili Sell, Ivika Ostonen, Gristin Rohula-Okunev, Linda Rusalepp, Azadeh Rezapour, Priit Kupper
Summary: Elevated air humidity reduces water flux through tree canopies and affects nutrient uptake. The response of fine roots to altered transpiration and nitrogen availability varies among different tree species. Changes in fine root functional distribution play an important role in tree adaptation to environmental change.
