Rights statement: This is the peer reviewed version of the following article: Risch, AC, Zimmermann, S, Moser, B, et al. Global impacts of fertilization and herbivore removal on soil net nitrogen mineralization are modulated by local climate and soil properties. Glob Change Biol. 2020; 26 (12): pp 7173-7185. https://doi.org/10.1111/gcb.15308 which has been published in final form at https://onlinelibrary.wiley.com/doi/10.1111/gcb.15308 This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.
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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Global impacts of fertilization and herbivore removal on soil net nitrogen mineralization are modulated by local climate and soil properties
AU - Risch, Anita C.
AU - Zimmermann, S.
AU - Moser, B.
AU - Schuetz, Martin
AU - Hagedorn, F.
AU - Firn, Jennifer
AU - Fay, P.A.
AU - Adler, Peter B.
AU - Biederman, Lori A.
AU - Blair, J.M.
AU - Borer, Elizabeth T.
AU - Broadbent, Arthur A. D.
AU - Brown, C.S.
AU - Cadotte, Marc W.
AU - Caldeira, Maria
AU - Davies, K.F.
AU - di Virgilio, A.
AU - Eisenhauer, N.
AU - Eskelinen, A.
AU - Knops, Johannes M. H.
AU - MacDougall, Andrew S.
AU - McCulley, Rebecca L.
AU - Melbourne, Brett
AU - Moore, J.L.
AU - Power, S.A.
AU - Prober, Suzanne M.
AU - Seabloom, Eric W.
AU - Siebert, J.
AU - Silveira, Maria
AU - Speziale, K.L.
AU - Stevens, Carly
AU - Tognetti, P.M.
AU - Virtanen, Risto
AU - Yahdjian, L.
AU - Ochoa, H.
N1 - This is the peer reviewed version of the following article: Risch, AC, Zimmermann, S, Moser, B, et al. Global impacts of fertilization and herbivore removal on soil net nitrogen mineralization are modulated by local climate and soil properties. Glob Change Biol. 2020; 26 (12): pp 7173-7185. https://doi.org/10.1111/gcb.15308 which has been published in final form at https://onlinelibrary.wiley.com/doi/10.1111/gcb.15308 This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.
PY - 2020/12/1
Y1 - 2020/12/1
N2 - Soil nitrogen (N) availability is critical for grassland functioning. However, human activities have increased the supply of biologically limiting nutrients, and changed the density and identity of mammalian herbivores. These anthropogenic changes may alter net soil N mineralization (soil net Nmin), that is, the net balance between N mineralization and immobilization, which could severely impact grassland structure and functioning. Yet, to date, little is known about how fertilization and herbivore removal individually, or jointly, affect soil net Nmin across a wide range of grasslands that vary in soil and climatic properties. Here we collected data from 22 grasslands on five continents, all part of a globally replicated experiment, to assess how fertilization and herbivore removal affected potential (laboratory‐based) and realized (field‐based) soil net Nmin. Herbivore removal in the absence of fertilization did not alter potential and realized soil net Nmin. However, fertilization alone and in combination with herbivore removal consistently increased potential soil net Nmin. Realized soil net Nmin, in contrast, significantly decreased in fertilized plots where herbivores were removed. Treatment effects on potential and realized soil net Nmin were contingent on site‐specific soil and climatic properties. Fertilization effects on potential soil net Nmin were larger at sites with higher mean annual precipitation (MAP) and temperature of the wettest quarter (T.q.wet). Reciprocally, realized soil net Nmin declined most strongly with fertilization and herbivore removal at sites with lower MAP and higher T.q.wet. In summary, our findings show that anthropogenic nutrient enrichment, herbivore exclusion and alterations in future climatic conditions can negatively impact soil net Nmin across global grasslands under realistic field conditions. This is an important context‐dependent knowledge for grassland management worldwide.
AB - Soil nitrogen (N) availability is critical for grassland functioning. However, human activities have increased the supply of biologically limiting nutrients, and changed the density and identity of mammalian herbivores. These anthropogenic changes may alter net soil N mineralization (soil net Nmin), that is, the net balance between N mineralization and immobilization, which could severely impact grassland structure and functioning. Yet, to date, little is known about how fertilization and herbivore removal individually, or jointly, affect soil net Nmin across a wide range of grasslands that vary in soil and climatic properties. Here we collected data from 22 grasslands on five continents, all part of a globally replicated experiment, to assess how fertilization and herbivore removal affected potential (laboratory‐based) and realized (field‐based) soil net Nmin. Herbivore removal in the absence of fertilization did not alter potential and realized soil net Nmin. However, fertilization alone and in combination with herbivore removal consistently increased potential soil net Nmin. Realized soil net Nmin, in contrast, significantly decreased in fertilized plots where herbivores were removed. Treatment effects on potential and realized soil net Nmin were contingent on site‐specific soil and climatic properties. Fertilization effects on potential soil net Nmin were larger at sites with higher mean annual precipitation (MAP) and temperature of the wettest quarter (T.q.wet). Reciprocally, realized soil net Nmin declined most strongly with fertilization and herbivore removal at sites with lower MAP and higher T.q.wet. In summary, our findings show that anthropogenic nutrient enrichment, herbivore exclusion and alterations in future climatic conditions can negatively impact soil net Nmin across global grasslands under realistic field conditions. This is an important context‐dependent knowledge for grassland management worldwide.
U2 - 10.1111/gcb.15308
DO - 10.1111/gcb.15308
M3 - Journal article
VL - 26
SP - 7173
EP - 7185
JO - Global Change Biology
JF - Global Change Biology
SN - 1354-1013
IS - 12
ER -