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Delimiting Pig Slurry Affected Subsurface Areas by Combining Geophysical and Geochemical Techniques

“…In fact, Carrasco (2005) [41] demonstrated how applying slurry in the soil promotes EC value increases. Carnol et al (1997) [42] attributed the increase in soil SO 4 2− concentrations to slurryamended crop soils, similarly to the accumulation of Cl − at the surface [43].…”

Microbial biomass and C and N transformations in forest floors under European beech, sessile oak, Norway spruce and Douglas-fir at four temperate forest sites

“…Traditionally, a C/N ratio of 25-27 is considered to be a threshold below which net nitrification and nitrate leaching may take place (Gundersen and Rasmussen, 1990). However, Robertson (1982) has shown relative nitrification over a wide range of C/N ratios and Carnol et al (1997) observed nitrate leaching at sites with high C/N ratios. In our study, relative nitrification was also observed above a C/N ratio of 25 and was not correlated to forest floor C/N ratios, indicating that the C/N ratio of the forest floor was not a good indicator of the potential impact of tree species on nitrification.…”

Only Minor Changes in the Soil Microbiome of a Sub-alpine Forest After 20 Years of Moderately Increased Nitrogen Loads

“…In temperate and boreal forests, reactive N inputs have been shown to alter tree growth and understory biomass, sometimes positively, sometimes negatively, depending on the N status, and other site factors (Solberg et al, 2009;Thomas et al, 2010;Gundale et al, 2014;Forstner et al, 2019a). N deposition can further accelerate soil acidification and base cation loss (Carnol et al, 1997;Högberg et al, 2006;Forstner et al, 2019a), increase N leaching (Carnol et al, 1997;Moldan and Wright, 2011;Schleppi et al, 2017), favor forest nutritional imbalances (Mooshammer et al, 2014;Zechmeister-Boltenstern et al, 2015;Forstner et al, 2019b) and affect the cycling and storage of soil organic C (Treseder, 2008;Janssens et al, 2010;Maaroufi et al, 2015). N deposition can also accelerate microbial soil processes that are part of the N cycle, such as nitrification and denitrification (Gundersen et al, 2012).…”