RT Journal Article
T1 Nitrogen supply modulates the effect of changes in drying–rewetting frequency on soil C and N cycling and greenhouse gas exchange
A1 Morillas Viñuales, Lourdes
A1 Durán Humia, Jorge
A1 Rodríguez Pereiras, Alexandra
A1 Roales Batanero, Javier
A1 Gallardo, Antonio
A1 Lovett, Gary M.
A1 Groffman, Peter M.
K1 Global change
K1 Microbial functional diversity
K1 MicroResp
K1 Nitrogen addition
K1 Nutrient cycling
K1 Precipitation pattern
K1 Soil respiration
AB Climate change and atmospheric nitrogen (N) deposition are two of the most important global change drivers. However, the interactions of these drivers have not been well studied. We aimed to assess how the combined effect of soil N additions and more frequent soil drying–rewetting events affects carbon (C) and N cycling, soil:atmosphere greenhouse gas (GHG) exchange, and functional microbial diversity. We manipulated the frequency of soil drying–rewetting events in soils from ambient and N-treated plots in a temperate forest and calculated the Orwin & Wardle Resistance index to compare the response of the different treatments. Increases in drying–rewetting cycles led to reductions in soil urn:x-wiley:13541013:media:gcb12956:gcb12956-math-0001 levels, potential net nitrification rate, and soil : atmosphere GHG exchange, and increases in urn:x-wiley:13541013:media:gcb12956:gcb12956-math-0002 and total soil inorganic N levels. N-treated soils were more resistant to changes in the frequency of drying–rewetting cycles, and this resistance was stronger for C- than for N-related variables. Both the long-term N addition and the drying–rewetting treatment altered the functionality of the soil microbial population and its functional diversity. Our results suggest that increasing the frequency of drying–rewetting cycles can affect the ability of soil to cycle C and N and soil : atmosphere GHG exchange and that the response to this increase is modulated by soil N enrichment.
PB Wiley
YR 2015
FD 2015
LK https://hdl.handle.net/10433/22901
UL https://hdl.handle.net/10433/22901
LA en
NO Global Change Biology, 2015 Oct;21(10):3854-63
NO Postdoctoral Grant of the Portuguese Science and Technology Foundation (SFRH/BDP/87966/2012)
NO Departamento de Sistemas Físicos, Químicos y Naturales
DS RIO
RD May 8, 2026