Palmborg, Cecilia
- Institutionen för växtproduktionsekologi, Sveriges lantbruksuniversitet
Sammanfattning
Effects of plant diversity on grassland productivity, or overyielding, are found to be robust to nutrient enrichment. However, the impact of cumulative nitrogen (N) addition (total N added over time) on overyielding and its drivers are underexplored. Synthesizing data from 15 multi-year grassland biodiversity experiments with N addition, we found that N addition decreases complementarity effects and increases selection effects proportionately, resulting in no overall change in overyielding regardless of N addition rate. However, we observed a convex relationship between overyielding and cumulative N addition, driven by a shift from complementarity to selection effects. This shift suggests diminishing positive interactions and an increasing contribution of a few dominant species with increasing N accumulation. Recognizing the importance of cumulative N addition is vital for understanding its impacts on grassland overyielding, contributing essential insights for biodiversity conservation and ecosystem resilience in the face of increasing N deposition.15 multi-year grassland biodiversity experiments suggest that with increasing cumulative nitrogen addition, the effect of diversity on productivity becomes increasingly reliant on a small number of dominant species rather than on overall species richness.
Publicerad i
Communications biology
2024, volym: 7, nummer: 1, artikelnummer: 309
Utgivare: NATURE PORTFOLIO
SLU författare
Globala målen (SDG)
SDG15 Ekosystem och biologisk mångfald
UKÄ forskningsämne
Ekologi
Publikationens identifierare
- DOI: https://doi.org/10.1038/s42003-024-05999-9
Permanent länk till denna sida (URI)
https://res.slu.se/id/publ/129281