| dc.contributor.author | Rutting, T. |
| dc.contributor.author | Cizungu-Ntaboba, L. |
| dc.contributor.author | Roobroeck, D. |
| dc.contributor.author | Bauters, M. |
| dc.contributor.author | Huygens, D. |
| dc.contributor.author | Boeckx, P. |
| dc.date.accessioned | 2019-12-04T11:03:35Z |
| dc.date.available | 2019-12-04T11:03:35Z |
| dc.date.issued | 2015-11-11 |
| dc.identifier.citation | Rütting, T., Cizungu Ntaboba, L., Roobroeck, D., Bauters, M., Huygens, D. & Boeckx, P. (2015). Leaky nitrogen cycle in pristine African montane rainforest soil. Global Biogeochemical Cycles, 29(10), 1754-1762. |
| dc.identifier.issn | 0886-6236 |
| dc.identifier.uri | https://hdl.handle.net/20.500.12478/1150 |
| dc.description.abstract | Many pristine humid tropical forests show simultaneously high nitrogen (N) richness and sustained loss of bioavailable N forms. To better understand this apparent upregulation of the N cycle in tropical forests, process-based understanding of soil N transformations, in geographically diverse locations, remains paramount. Field-based evidence is limited and entirely lacking for humid tropical forests on the African continent. This study aimed at filling both knowledge gaps by monitoring N losses and by conducting an in situ 15N labeling experiment in the Nyungwe tropical montane forest in Rwanda. Here we show that this tropical forest shows high nitrate (NO3−) leaching losses, confirming findings from other parts of the world. Gross N transformation rates point to an open soil N cycle with mineralized N nitrified rather than retained via immobilization; gross immobilization of NH4+ and NO3− combined accounted for 37% of gross mineralization, and plant N uptake is dominated by ammonium (NH4+). This study provided new process understanding of soil N cycling in humid tropical forests and added geographically independent evidence that humid tropical forests are characterized by soil N dynamics and N inputs sustaining bioavailable N loss. |
| dc.format.extent | 1754–1762 |
| dc.language.iso | en |
| dc.subject | Tropical Forests |
| dc.subject | Nitrogen Cycle |
| dc.subject | Mineralization |
| dc.title | Leaky nitrogen cycle in pristine African montane rainforest soil |
| dc.type | Journal Article |
| dc.description.version | Peer Review |
| cg.contributor.crp | Integrated Systems for the Humid Tropics |
| cg.contributor.affiliation | University of Gothenburg |
| cg.contributor.affiliation | Université Catholique de Bukavu |
| cg.contributor.affiliation | Ghent University |
| cg.contributor.affiliation | International Institute of Tropical Agriculture |
| cg.coverage.region | Central Africa |
| cg.coverage.country | Rwanda |
| cg.isijournal | ISI Journal |
| cg.authorship.types | CGIAR and developing country institute |
| cg.iitasubject | Forestry |
| cg.journal | Global Biogeochemical Cycles |
| cg.howpublished | Formally Published |
| cg.accessibilitystatus | Limited Access |
| local.dspaceid | 78207 |
| cg.targetaudience | Scientists |
| cg.identifier.doi | https://dx.doi.org/10.1002/2015gb005144 |
