van Straaten, Oliver

[["dc.bibliographiccitation.firstpage","55"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Plant Ecology"],["dc.bibliographiccitation.lastpage","66"],["dc.bibliographiccitation.volume","216"],["dc.contributor.author","Thonhofer, Joachim"],["dc.contributor.author","Getto, Daniela"],["dc.contributor.author","van Straaten, Oliver"],["dc.contributor.author","Cicuzza, Daniele"],["dc.contributor.author","Kessler, Michael"],["dc.date.accessioned","2018-11-07T10:03:54Z"],["dc.date.available","2018-11-07T10:03:54Z"],["dc.date.issued","2015"],["dc.description.abstract","Rattan palms are dominant elements of Southeast Asian rainforests and of high economic importance, yet little is known about the ecological factors determining the spatial distribution of species and assemblages. We studied rattan palm assemblages at two sites at different elevations in Lore Lindu National Park, Sulawesi, Indonesia (Pono: 958-1,266 m; Bariri: 1,390-1,507 m). At each site, we established a transect of 1.29 km consisting of 65 study plots of 10 x 10 m(2) each, regularly spaced 20 m from each other. In total, we recorded 5,081 rattan individuals belonging to 22 species, with 1,367 individuals of 16 species at Pono and 3,714 individuals of 8 species at Bariri. Variance partitioning explained 29-49 % of community variation at Pono and 40-72 % at Bariri, with most variation jointly explained by spatial and environmental variables. Within the environmental influence, soil factors dominated over local topographical ones. RDA ordination allowed the discrimination of four species groups at Pono and three groups at Bariri. These groups were related to soil and less clearly to topographic variables. Our study is the first documentation of the importance of soil parameters in determining the spatial distribution of rattan palms. Interestingly, juvenile palms (< 1 m tall) showed closer relationships to environmental factors than adult plants (> 1 m tall), calling for further studies on the demography of rattan palms."],["dc.description.sponsorship","German Research Foundation (DFG) [SFB 552]"],["dc.identifier.doi","10.1007/s11258-014-0416-x"],["dc.identifier.isi","000347696700005"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/38577"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","1573-5052"],["dc.relation.issn","1385-0237"],["dc.title","Influence of spatial and environmental variables on rattan palm (Arecaceae) assemblage composition in Central Sulawesi, Indonesia"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","117522"],["dc.bibliographiccitation.journal","Forest Ecology and Management"],["dc.bibliographiccitation.volume","451"],["dc.contributor.author","Tchiofo Lontsi, Rodine"],["dc.contributor.author","Corre, Marife D."],["dc.contributor.author","van Straaten, Oliver"],["dc.contributor.author","Veldkamp, Edzo"],["dc.date.accessioned","2019-12-13T16:52:30Z"],["dc.date.available","2019-12-13T16:52:30Z"],["dc.date.issued","2019"],["dc.description.abstract","Although disturbances associated with selective logging can cause pronounced changes in soil characteristics and nutrient stocks, such information is very limited for highly weathered soils in Africa. We assessed the effects of reduced impact logging (RIL, with a 30-year rotation management plan) and conventional logging (CL, without a management plan) on physical and biochemical characteristics of Ferralsol soils that developed on pre-Cambrian rocks in rainforests of Cameroon. Five to seven months after the logging operations were completed, we mapped the CL and RIL sites and quantified the disturbed areas: felling gaps, skidding trails, logging decks and roads. We selected four replicate plots at each site that encompassed these four disturbed strata and an adjacent undisturbed area as the reference. At each disturbed stratum and reference area per plot, we took soil samples down to 50 cm, and quantified soil physical and biochemical characteristics. Nutrient exports with timber harvest were also quantified. The logging intensity was very low with removals of 0.2 and 0.3 tree per hectare, and the ground area disturbed accounted only 5.2% and 4.0% of the total area in CL and RIL, respectively. In terms of area disturbance for each harvested tree, CL had 753 m 2 tree −1 more affected ground area than RIL. Roads and logging decks were the most affected by logging operations, where effective cation exchange capacity, soil organic carbon (SOC), total nitrogen (N), Bray-extractable phosphorus (P) and exchangeable aluminum decreased whereas pH, 15 N natural abundance and exchangeable manganese increased compared to the undisturbed reference area (P < 0.01-0.04). The disturbed area showed overall reductions of 21-29% in SOC, N and P stocks relative to the reference areas (P = 0.02-0.07). The amounts of C, N, P and base cations exported with harvested timber were only 0.4-5.9% of the changes in stocks of these elements in the disturbed strata. Nutrient reductions in the soil and exports through timber harvest were comparable between CL and RIL, after one logging event in this very low intensity logging systems. Our results suggest that unplanned operations together with frequent re-logging inherent to CL can increase area damage and enhance changes in SOC and nutrients as opposed to RIL, which may affect the recovery of the succeeding vegetation."],["dc.identifier.doi","10.1016/j.foreco.2019.117522"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/62756"],["dc.language.iso","en"],["dc.relation.issn","0378-1127"],["dc.title","Changes in soil organic carbon and nutrient stocks in conventional selective logging versus reduced-impact logging in rainforests on highly weathered soils in Southern Cameroon"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","132"],["dc.bibliographiccitation.journal","Journal of Arid Environments"],["dc.bibliographiccitation.lastpage","140"],["dc.bibliographiccitation.volume","165"],["dc.contributor.author","van Straaten, Oliver"],["dc.contributor.author","Doamba, Sabine W.M.F."],["dc.contributor.author","Corre, Marife D."],["dc.contributor.author","Veldkamp, Edzo"],["dc.date.accessioned","2020-12-10T14:24:50Z"],["dc.date.available","2020-12-10T14:24:50Z"],["dc.date.issued","2019"],["dc.identifier.doi","10.1016/j.jaridenv.2019.02.013"],["dc.identifier.issn","0140-1963"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/72361"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Impacts of burning on soil trace gas fluxes in two wooded savanna sites in Burkina Faso"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","art119"],["dc.bibliographiccitation.issue","10"],["dc.bibliographiccitation.journal","Ecosphere"],["dc.bibliographiccitation.lastpage","22"],["dc.bibliographiccitation.volume","2"],["dc.contributor.author","van Straaten, Oliver"],["dc.contributor.author","Veldkamp, Edzo"],["dc.contributor.author","Corre, Marife D."],["dc.date.accessioned","2021-12-08T12:28:06Z"],["dc.date.available","2021-12-08T12:28:06Z"],["dc.date.issued","2011"],["dc.description.abstract","Climate models predict that the frequency and intensity of ENSO-related droughts will increase in Southeast Asia, yet little is known about how changes in precipitation patterns will affect soil CO2 efflux. Our objective was to determine drought responses on soil CO2 efflux, CO2 production sources (leaf litter, belowground heterotrophic (microbial) and autotrophic (root) respiration), and on CO2 production within the top 250 cm of soil. We simulated drought conditions in a sub-montane forest in Indonesia by constructing large throughfall displacement roofs in three 40 × 40 m plots and compared measurements with three control plots. The study lasted for 31 months with biweekly measurements: 2.5 months pre-treatment, 9 months of 50% roof closure followed by 15.5 months of 80% closure (46 ± 13% and 80 ± 12% throughfall reductions, respectively), and 4 months of roof opening. Soil CO2 efflux from the control plots was 11.7 ± 1.1 Mg C·ha−1·yr−1 and the contributions from leaf litter respiration, belowground heterotrophic respiration and autotrophic respiration were 29 ± 4%, 45 ± 6% and 30 ± 3%, respectively. Carbon dioxide production in the top 50 cm contributed 65% of the total production within 250 cm. During the simulated drought, soil CO2 efflux declined by 23% in the first 9 months and 48% in the next 15.5 months compared to the control. This was accompanied by significant decreases in both autotrophic and heterotrophic sources. Following roof opening, soil CO2 efflux rebounded slowly, but did not surpass the control. Soil matric potential exhibited an exponential relationship with soil CO2 efflux. The strong drought-induced decrease in soil respiration indicates that this forest ecosystem is drought sensitive, but could recover with commencement of normal rainfall levels."],["dc.identifier.doi","10.1890/ES11-00079.1"],["dc.identifier.gro","3150185"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/95555"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-476"],["dc.notes.status","final"],["dc.relation.issn","2150-8925"],["dc.rights.uri","http://doi.wiley.com/10.1002/tdm_license_1.1"],["dc.subject","Keywords: experimental drought;litter removal;root exclusion;soil CO2 efflux; soil CO2 production; throughfall displacement roof; tropical sub-montane forest"],["dc.title","Simulated drought reduces soil CO 2 efflux and production in a tropical forest in Sulawesi, Indonesia"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","13"],["dc.bibliographiccitation.journal","SOIL"],["dc.bibliographiccitation.lastpage","23"],["dc.bibliographiccitation.volume","2"],["dc.contributor.author","Hombegowda, H. C."],["dc.contributor.author","van Straaten, Oliver"],["dc.contributor.author","Köhler, M."],["dc.contributor.author","Hölscher, Dirk"],["dc.date.accessioned","2017-09-07T11:45:36Z"],["dc.date.available","2017-09-07T11:45:36Z"],["dc.date.issued","2016"],["dc.description.abstract","Tropical agroforestry has an enormous potential to sequester carbon while simultaneously producing agricultural yields and tree products. The amount of soil organic carbon (SOC) sequestered is influenced by the type of the agroforestry system established, the soil and climatic conditions, and management. In this regional-scale study, we utilized a chronosequence approach to investigate how SOC stocks changed when the original forests are converted to agriculture, and then subsequently to four different agroforestry systems (AFSs): home garden, coffee, coconut and mango. In total we established 224 plots in 56 plot clusters across 4 climate zones in southern India. Each plot cluster consisted of four plots: a natural forest reference, an agriculture reference and two of the same AFS types of two ages (30–60 years and > 60 years). The conversion of forest to agriculture resulted in a large loss the original SOC stock (50–61 %) in the top meter of soil depending on the climate zone. The establishment of home garden and coffee AFSs on agriculture land caused SOC stocks to rebound to near forest levels, while in mango and coconut AFSs the SOC stock increased only slightly above the agriculture SOC stock. The most important variable regulating SOC stocks and its changes was tree basal area, possibly indicative of organic matter inputs. Furthermore, climatic variables such as temperature and precipitation, and soil variables such as clay fraction and soil pH were likewise all important regulators of SOC and SOC stock changes. Lastly, we found a strong correlation between tree species diversity in home garden and coffee AFSs and SOC stocks, highlighting possibilities to increase carbon stocks by proper tree species assemblies."],["dc.identifier.doi","10.5194/soil-2-13-2016"],["dc.identifier.fs","625149"],["dc.identifier.gro","3149043"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/5686"],["dc.language.iso","en"],["dc.notes.intern","Hoelscher Crossref import"],["dc.notes.status","final"],["dc.notes.submitter","chake"],["dc.relation.issn","2199-398X"],["dc.title","On the rebound: soil organic carbon stocks can bounce back to near forest levels when agroforests replace agriculture in southern India"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","3307"],["dc.bibliographiccitation.issue","12"],["dc.bibliographiccitation.journal","BIOGEOSCIENCES"],["dc.bibliographiccitation.lastpage","3308"],["dc.bibliographiccitation.volume","11"],["dc.contributor.author","Vicca, S."],["dc.contributor.author","Bahn, M."],["dc.contributor.author","Estiarte, M."],["dc.contributor.author","van Loon, E. E."],["dc.contributor.author","Vargas, R."],["dc.contributor.author","Alberti, G."],["dc.contributor.author","Ambus, P."],["dc.contributor.author","Arain, M. Altaf"],["dc.contributor.author","Beier, C."],["dc.contributor.author","Bentley, L. P."],["dc.contributor.author","Borken, W."],["dc.contributor.author","Buchmann, Nina"],["dc.contributor.author","Collins, Sally L."],["dc.contributor.author","de Dato, G."],["dc.contributor.author","Dukes, Jeffrey S."],["dc.contributor.author","Escolar, C."],["dc.contributor.author","Fay, P."],["dc.contributor.author","Guidolotti, G."],["dc.contributor.author","Hanson, P. J."],["dc.contributor.author","Kahmen, A."],["dc.contributor.author","Kroeel-Dulay, G."],["dc.contributor.author","Ladreiter-Knauss, T."],["dc.contributor.author","Larsen, Klaus Steenberg"],["dc.contributor.author","Lellei-Kovacs, E."],["dc.contributor.author","Lebrija-Trejos, E."],["dc.contributor.author","Maestre, F. T."],["dc.contributor.author","Marhan, Sven"],["dc.contributor.author","Marshall, M."],["dc.contributor.author","Meir, P."],["dc.contributor.author","Miao, Y."],["dc.contributor.author","Muhr, J."],["dc.contributor.author","Niklaus, P. A."],["dc.contributor.author","Ogaya, R."],["dc.contributor.author","Penuelas, Josep"],["dc.contributor.author","Poll, Christian"],["dc.contributor.author","Rustad, L. E."],["dc.contributor.author","Savage, K."],["dc.contributor.author","Schindlbacher, A."],["dc.contributor.author","Schmidt, Inger Kappel"],["dc.contributor.author","Smith, A. R."],["dc.contributor.author","Sotta, E. D."],["dc.contributor.author","Suseela, V."],["dc.contributor.author","Tietema, A."],["dc.contributor.author","van Gestel, N."],["dc.contributor.author","van Straaten, Oliver"],["dc.contributor.author","Wan, S."],["dc.contributor.author","Weber, U."],["dc.contributor.author","Janssens, Ivan A."],["dc.date.accessioned","2018-11-07T09:46:00Z"],["dc.date.available","2018-11-07T09:46:00Z"],["dc.date.issued","2014"],["dc.identifier.doi","10.5194/bg-11-3307-2014"],["dc.identifier.isi","000338761200014"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/34766"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Copernicus Gesellschaft Mbh"],["dc.relation.issn","1726-4189"],["dc.relation.issn","1726-4170"],["dc.title","Can current moisture responses predict soil CO2 efflux under altered precipitation regimes? A synthesis of manipulation experiments (vol 11, pg 2991, 2014)"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1216"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Journal of Vegetation Science"],["dc.bibliographiccitation.lastpage","1224"],["dc.bibliographiccitation.volume","25"],["dc.contributor.author","Jones, Mirkka M."],["dc.contributor.author","Cicuzza, Daniele"],["dc.contributor.author","van Straaten, Oliver"],["dc.contributor.author","Veldkamp, Edzo"],["dc.contributor.author","Kessler, Michael"],["dc.contributor.editor","Pugnaire, Francisco"],["dc.date.accessioned","2017-09-07T11:43:38Z"],["dc.date.available","2017-09-07T11:43:38Z"],["dc.date.issued","2014"],["dc.identifier.doi","10.1111/jvs.12181"],["dc.identifier.gro","3150195"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/6933"],["dc.language.iso","en"],["dc.notes.status","zu prüfen"],["dc.relation.issn","1100-9233"],["dc.title","Determinants of fern and angiosperm herb community structure in lower montane rainforest in Indonesia"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","518"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","New Phytologist"],["dc.bibliographiccitation.lastpage","522"],["dc.bibliographiccitation.volume","195"],["dc.contributor.author","Vicca, S."],["dc.contributor.author","Gilgen, A. K."],["dc.contributor.author","Serrano, M. Camino"],["dc.contributor.author","Dreesen, F. E."],["dc.contributor.author","Dukes, Jeffrey S."],["dc.contributor.author","Estiarte, M."],["dc.contributor.author","Gray, S. B."],["dc.contributor.author","Guidolotti, G."],["dc.contributor.author","Hoeppner, S. S."],["dc.contributor.author","Leakey, A. D. B."],["dc.contributor.author","Ogaya, R."],["dc.contributor.author","Ort, D. R."],["dc.contributor.author","Ostrogovic, M. Z."],["dc.contributor.author","Rambal, Serge"],["dc.contributor.author","Sardans, J."],["dc.contributor.author","Schmitt, M."],["dc.contributor.author","Siebers, M."],["dc.contributor.author","van der Linden, L."],["dc.contributor.author","van Straaten, Oliver"],["dc.contributor.author","Granier, A."],["dc.date.accessioned","2018-11-07T09:08:03Z"],["dc.date.available","2018-11-07T09:08:03Z"],["dc.date.issued","2012"],["dc.identifier.doi","10.1111/j.1469-8137.2012.04224.x"],["dc.identifier.isi","000306179200006"],["dc.identifier.pmid","22734795"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/25940"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-blackwell"],["dc.relation.issn","1469-8137"],["dc.relation.issn","0028-646X"],["dc.title","Urgent need for a common metric to make precipitation manipulation experiments comparable"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.subtype","letter_note"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","10"],["dc.bibliographiccitation.journal","Journal of Geophysical Research. G, Biogeosciences"],["dc.bibliographiccitation.volume","126"],["dc.contributor.author","Iddris, Najeeb A."],["dc.contributor.author","Corre, Marife D."],["dc.contributor.author","van Straaten, Oliver"],["dc.contributor.author","Tchiofo Lontsi, Rodine"],["dc.contributor.author","Veldkamp, Edzo"],["dc.date.accessioned","2021-12-01T09:20:47Z"],["dc.date.available","2021-12-01T09:20:47Z"],["dc.date.issued","2021"],["dc.identifier.doi","10.1029/2021JG006312"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/94273"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-478"],["dc.relation.eissn","2169-8961"],["dc.relation.issn","2169-8953"],["dc.title","Substantial Stem Methane Emissions From Rainforest and Cacao Agroforest Partly Negate Soil Uptake in the Congo Basin"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","433"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","SOIL"],["dc.bibliographiccitation.lastpage","451"],["dc.bibliographiccitation.volume","7"],["dc.contributor.author","Tamale, Joseph"],["dc.contributor.author","Hüppi, Roman"],["dc.contributor.author","Griepentrog, Marco"],["dc.contributor.author","Turyagyenda, Laban Frank"],["dc.contributor.author","Barthel, Matti"],["dc.contributor.author","Doetterl, Sebastian"],["dc.contributor.author","Fiener, Peter"],["dc.contributor.author","van Straaten, Oliver"],["dc.date.accessioned","2021-08-12T07:46:09Z"],["dc.date.available","2021-08-12T07:46:09Z"],["dc.date.issued","2021"],["dc.description.abstract","Abstract. Soil macronutrient availability is one of the abiotic controls that alters the exchange of greenhouse gases (GHGs) between the soil and the atmosphere in tropical forests. However, evidence on the macronutrient regulation of soil GHG fluxes from central African tropical forests is still lacking, limiting our understanding of how these biomes could respond to potential future increases in nitrogen (N) and phosphorus (P) deposition. The aim of this study was to disentangle the regulation effect of soil nutrients on soil GHG fluxes from a Ugandan tropical forest reserve in the context of increasing N and P deposition. Therefore, a large-scale nutrient manipulation experiment (NME), based on 40 m×40 m plots with different nutrient addition treatments (N, P, N + P, and control), was established in the Budongo Central Forest Reserve. Soil carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) fluxes were measured monthly, using permanently installed static chambers, for 14 months. Total soil CO2 fluxes were partitioned into autotrophic and heterotrophic components through a root trenching treatment. In addition, soil temperature, soil water content, and nitrates were measured in parallel to GHG fluxes. N addition (N and N + P) resulted in significantly higher N2O fluxes in the transitory phase (0–28 d after fertilization; p<0.01) because N fertilization likely increased soil N beyond the microbial immobilization and plant nutritional demands, leaving the excess to be nitrified or denitrified. Prolonged N fertilization, however, did not elicit a significant response in background (measured more than 28 d after fertilization) N2O fluxes. P fertilization marginally and significantly increased transitory (p=0.05) and background (p=0.01) CH4 consumption, probably because it enhanced methanotrophic activity. The addition of N and P (N + P) resulted in larger CO2 fluxes in the transitory phase (p=0.01), suggesting a possible co-limitation of both N and P on soil respiration. Heterotrophic (microbial) CO2 effluxes were significantly higher than the autotrophic (root) CO2 effluxes (p<0.01) across all treatment plots, with microbes contributing about two-thirds of the total soil CO2 effluxes. However, neither heterotrophic nor autotrophic respiration significantly differed between treatments. The results from this study suggest that the feedback of tropical forests to the global soil GHG budget could be disproportionately altered by increases in N and P availability over these biomes."],["dc.description.abstract","Abstract. Soil macronutrient availability is one of the abiotic controls that alters the exchange of greenhouse gases (GHGs) between the soil and the atmosphere in tropical forests. However, evidence on the macronutrient regulation of soil GHG fluxes from central African tropical forests is still lacking, limiting our understanding of how these biomes could respond to potential future increases in nitrogen (N) and phosphorus (P) deposition. The aim of this study was to disentangle the regulation effect of soil nutrients on soil GHG fluxes from a Ugandan tropical forest reserve in the context of increasing N and P deposition. Therefore, a large-scale nutrient manipulation experiment (NME), based on 40 m×40 m plots with different nutrient addition treatments (N, P, N + P, and control), was established in the Budongo Central Forest Reserve. Soil carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) fluxes were measured monthly, using permanently installed static chambers, for 14 months. Total soil CO2 fluxes were partitioned into autotrophic and heterotrophic components through a root trenching treatment. In addition, soil temperature, soil water content, and nitrates were measured in parallel to GHG fluxes. N addition (N and N + P) resulted in significantly higher N2O fluxes in the transitory phase (0–28 d after fertilization; p<0.01) because N fertilization likely increased soil N beyond the microbial immobilization and plant nutritional demands, leaving the excess to be nitrified or denitrified. Prolonged N fertilization, however, did not elicit a significant response in background (measured more than 28 d after fertilization) N2O fluxes. P fertilization marginally and significantly increased transitory (p=0.05) and background (p=0.01) CH4 consumption, probably because it enhanced methanotrophic activity. The addition of N and P (N + P) resulted in larger CO2 fluxes in the transitory phase (p=0.01), suggesting a possible co-limitation of both N and P on soil respiration. Heterotrophic (microbial) CO2 effluxes were significantly higher than the autotrophic (root) CO2 effluxes (p<0.01) across all treatment plots, with microbes contributing about two-thirds of the total soil CO2 effluxes. However, neither heterotrophic nor autotrophic respiration significantly differed between treatments. The results from this study suggest that the feedback of tropical forests to the global soil GHG budget could be disproportionately altered by increases in N and P availability over these biomes."],["dc.identifier.doi","10.5194/soil-7-433-2021"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/88629"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-448"],["dc.relation.eissn","2199-398X"],["dc.title","Nutrient limitations regulate soil greenhouse gas fluxes from tropical forests: evidence from an ecosystem-scale nutrient manipulation experiment in Uganda"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]