Global impacts of fertilization and herbivore removal on soil net nitrogen mineralization are modulated by local climate and soil properties

Abstract

Global impacts of fertilization and herbivore removal on soil net nitrogen Global impacts of fertilization and herbivore removal on soil net nitrogen mineralization are modulated by local climate and soil properties mineralization are modulated by local climate and soil properties

Long-term regional evidence of the effects of livestock grazing on soil microbial community structure and functions in surface and deep soil layers

“…In contrast, a recent meta-analysis (Zhou et al, 2017) and a continental-scale experiment (Risch et al, 2020) indicated that soil C and N mineralization were increased or were unaffected by grazing, suggesting that the effect of grazing on C and N mineralization depends on spatial scale and grassland type. The strong associations of plant substrates (plant C:N ratio and BGB) with C or N mineralization rates in the surface soil layer in the current study are reasonable because these substrates are the main sources of energy for soil microorganisms (Dungait et al, 2012).…”

Nitrogen deposition and climate: an integrated synthesis

“…Soil microbial biomass and N. Grassland microbial biomass and microbial biomass C:N chemistry was unchanged in response to NutNet's consistently increased N supply across a wide range of climatic and edaphic conditions [77][78][79]. Although N did not generally reduce soil pH, N supply reduced microbial genes associated with metabolism, reducing both microbial growth and respiration, particularly in surface soils [78,80].…”

Long-term N-addition alters the community structure of functionally important N-cycling soil microorganisms across global grasslands

“…+ and NO 3 − concentration and pH (Risch et al, 2020). Another subsample was sieved (4 mm) and used to determine the N-cycling functional microbial communities (six samples per site).…”