|Title||Nutrient identity modifies the destabilising effects of eutrophication in grasslands|
|Publication Type||Journal Article|
|Year of Publication||2022|
|Authors||Carroll, O, Batzer, E, Bharath, S, Borer, ET, Campana, ía, Esch, E, Hautier, Y, Ohlert, T, Seabloom, EW, Adler, PB, Bakker, JD, Biederman, L, Bugalho, MN, Caldeira, M, Chen, Q, Davies, KF, Fay, PA, Knops, JMH, Komatsu, KJ, Martina, JP, McCann, KS, Moore, JL, Morgan, JW, Muraina, TO, Osborne, B, Risch, AC, Stevens, C, Wilfahrt, PA, Yahdjian, L, MacDougall, AS|
|Secondary Authors||Peñuelas, J|
|Pagination||754 - 765|
Nutrient enrichment can simultaneously increase and destabilise plant biomass production, with co-limitation by multiple nutrients potentially intensifying these effects. Here, we test how factorial additions of nitrogen (N), phosphorus (P) and potassium with essential nutrients (K+) affect the stability (mean/standard deviation) of aboveground biomass in 34 grasslands over 7 years. Destabilisation with fertilisation was prevalent but was driven by single nutrients, not synergistic nutrient interactions. On average, N-based treatments increased mean biomass production by 21–51% but increased its standard deviation by 40–68% and so consistently reduced stability. Adding P increased interannual variability and reduced stability without altering mean biomass, while K+ had no general effects. Declines in stability were largest in the most nutrient-limited grasslands, or where nutrients reduced species richness or intensified species synchrony. We show that nutrients can differentially impact the stability of biomass production, with N and P in particular disproportionately increasing its interannual variability.