Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.1007/s10533-016-0283-8 |
| Document | Shareable Link |
| Title (Primary) | Mechanisms behind plant diversity effects on inorganic and organic N leaching from temperate grassland |
| Author | Leimer, S.; Oelmann, Y.; Eisenhauer, N.; Milcu, A.; Roscher, C.; Scheu, S.; Weigelt, A.; Wirth, C.; Wilcke, W. |
| Source Titel | Biogeochemistry |
| Year | 2016 |
| Department | iDiv; PHYDIV |
| Volume | 131 |
| Issue | 3 |
| Page From | 339 |
| Page To | 353 |
| Language | englisch |
| Keywords | The Jena Experiment; Biodiversity; DON leaching; Ammonium leaching; TDN leaching; Land-use change |
| UFZ wide themes | RU1 |
| Abstract |
Higher
plant diversity reduces nitrate leaching by complementary resource use, while
its relation to leaching of other N species is unclear. We determined the
effects of plant species richness, functional group richness, and the presence
of specific functional groups on ammonium, dissolved organic N (DON), and total
dissolved N (TDN) leaching from grassland in the first 4 years after conversion
from fertilized arable land to unfertilized grassland. On 62 experimental plots
in Jena, Germany, with 1–60 plant species and 1–4 functional groups (legumes,
grasses, tall herbs, small herbs), nitrate, ammonium, and TDN concentrations in
soil solution (0–0.3 m soil layer) were measured fortnightly during 4 years.
DON concentrations were calculated by subtracting inorganic N from TDN.
Nitrogen concentrations were multiplied with modeled downward water fluxes to
obtain N leaching. DON leaching contributed most to TDN leaching (64 ± SD 4% of
TDN). Ammonium leaching was unaffected by plant diversity. Increasing species richness
decreased DON leaching in the fourth year. We attribute this finding to
enhanced use of DON as a C and N source and enhanced mineralization of DON by
soil microorganisms. An increase of species richness decreased TDN leaching
likely driven by the complementary use of nitrate by diverse mixtures. Legumes
increased DON and TDN leaching likely because of their N2- use of nitrate and of DON and TDN. |
| Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=18412 |
| Leimer, S., Oelmann, Y., Eisenhauer, N., Milcu, A., Roscher, C., Scheu, S., Weigelt, A., Wirth, C., Wilcke, W. (2016): Mechanisms behind plant diversity effects on inorganic and organic N leaching from temperate grassland Biogeochemistry 131 (3), 339 - 353 10.1007/s10533-016-0283-8 |
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