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Open AccessWarming and redistribution of nitrogen inputs drive an increase in terrestrial nitrous oxide emission factor
Anthropogenic nitrogen inputs cause major negative environmental impacts, including emissions of the important greenhouse gas N2O. Despite their importance, shifts in terrestrial N loss pathways driven by global ...
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Article
Assessment of soil fertility and quality for improved cocoa production in six cocoa growing regions in Ghana
Inadequate or lack of prudent soil fertility management by cocoa farmers leads to nutrient depletion in cocoa production fields. The objective of this study was to assess current soil fertility status of cocoa...
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Article
Links among warming, carbon and microbial dynamics mediated by soil mineral weathering
Quantifying soil carbon dynamics is of utmost relevance in the context of global change because soils play an important role in land–atmosphere gas exchange. Our current understanding of both present and futur...
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Article
Gross Nitrogen Dynamics in the Mycorrhizosphere of an Organic Forest Soil
The rhizosphere is a hot-spot for biogeochemical cycles, including production of greenhouse gases, as microbial activity is stimulated by rhizodeposits released by roots and mycorrhizae. The biogeochemical cyc...
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Article
Increased fungal dominance in N2O emission hotspots along a natural pH gradient in organic forest soil
Drained organic forest soils represent a hotspot for nitrous oxide (N2O) emissions, which are directly related to soil fertility, with generally higher emissions from N-rich soils. Highest N2O emissions have been...
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Article
Anaerobic oxidation of methane in a cold-water coral carbonate mound from the Gulf of Cadiz
The Gulf of Cadiz is an area of mud volcanism and gas venting through the seafloor. In addition, several cold-water coral carbonate mounds have been discovered at the Pen Duick escarpment amidst the El Arraich...
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Article
Wetland vegetation distribution modelling for the identification of constraining environmental variables
Wetland ecosystems are of primary concern for nature conservation and restoration. Adequate conservation and restoration strategies emerge from a scientific comprehension of wetland properties and processes. H...
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Improved estimation of biological nitrogen fixation of soybean cultivars (Glycine max L. Merril) using 15N natural abundance technique
Biological nitrogen fixation (BNF) of 17 soybean cultivars was comparatively estimated by the δ15N natural abundance technique using two non-nodulation soybeans (Clay and Chippewa) as reference plants. A field st...
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Article
Functional role of DNRA and nitrite reduction in a pristine south Chilean Nothofagus forest
Nitrite (NO2 −) is an intermediate in a variety of soil N cycling processes. However, NO2 − dynamics are often not included in studies that explore the N cycle in s...
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Article
Do nitrogen isotope patterns reflect microbial colonization of soil organic matter fractions?
Different theories have been brought forward to explain the commonly observed δ15N enrichment with depth in soil profiles, including the discrimination against 15N during N decomposition and the buildup of 15N-en...
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Article
Regional Assessment of N Saturation using Foliar and Root \(\varvec {\delta}^{\bf 15}{\bf N}\)
N saturation induced by atmospheric N deposition can have serious consequences for forest health in many regions. In order to evaluate whether foliar \(\delta^{15}\hbox{N}\)
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Open AccessInfluence of Nitrification Inhibitors on Soil N Dynamics after Incorporation of Vegetable Crop Residues: A Field Study
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Mitigation of N2O and CH4 Emission from Rice and Wheat Crop** Systems Using Dicyandiamide and Hydroquinone
Agriculture contributes considerably to the emission of greenhouse gases, such as N2O and CH4. Here we summarize results from previous pot experiments assessing the effectiveness of urease and nitrification inhib...
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Physicochemical and biological factors affecting atmospheric methane oxidation in gray forest soils
The decline of methane oxidizing activities in gray forest soil upon its conversion into arable land was shown to be caused by major changes in biotic and physicochemical properties of soil. Using the method o...
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Article
The role of gross and net N transformation processes and NH4 + and NO3 − immobilization in controlling the mineral N pool of a temperate mixed deciduous forest soil
In many forests of Europe and north-eastern North America elevated N deposition has opened the forest N cycle, resulting in NO3 − leaching. On the other hand, despite this elevated N deposition, the domin...
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Article
Seasonal Dynamics of Atmospheric Methane Oxidation in Gray Forest Soils
Seasonal fluctuations in the methane fluxes in the soil–atmosphere system were determined for gray forest soils of Central Russia. Consumption of atmospheric methane was found to exceed methane emission in gra...
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Article
Can δ15N profiles in forest soils predict \( {\rm{NO}}_3^ - \) loss and net N mineralization rates?
This paper studies changes of 15N signatures (δ15N, ‰) and total N (TN, %) in soil profiles among forest stands with different \( {\rm NO}_3^ - \) losses within the same cli...
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Article
Nitrous oxide production from an ultisol of the humid tropics treated with different nitrogen sources and moisture regimes
To investigate the impact of different N sources and moisture regimes on N2O production, laboratory incubations using a Bungor series soil (Typic Paleudults) were carried out for a period of 25 days. A maximum N
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Nitrous oxide and methane emissions during rice growth and through rice plants: effect of dicyandiamide and hydroquinone
There is growing interest in N2O and CH4 transport through rice plants, but very little information is available on the effects of inhibitors on these gaseous emissions during rice growth and through rice plants...
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Article
Influence of Azolla on CH4 Emission from Rice Fields
Azolla is an aquatic fern that has been used successfully as a dual crop with wetland rice. Rice fields are a major source of atmospheric CH4, which is an important greenhouse gas. In this study, field and labor...
