Guillaume, Thomas

[["dc.bibliographiccitation.artnumber","5"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Ecology and Society"],["dc.bibliographiccitation.volume","21"],["dc.contributor.author","Merten, Jennifer"],["dc.contributor.author","Röll, Alexander"],["dc.contributor.author","Guillaume, Thomas"],["dc.contributor.author","Meijide, Ana"],["dc.contributor.author","Tarigan, Suria"],["dc.contributor.author","Agusta, Herdhata"],["dc.contributor.author","Dislich, Claudia"],["dc.contributor.author","Dittrich, Christoph"],["dc.contributor.author","Faust, Heiko"],["dc.contributor.author","Gunawan, Dodo"],["dc.contributor.author","Hölscher, Dirk"],["dc.contributor.author","Hein, Jonas"],["dc.contributor.author","Hendrayanto, H."],["dc.contributor.author","Knohl, Alexander"],["dc.contributor.author","Kuzyakov, Yakov"],["dc.contributor.author","Wiegand, Kerstin"],["dc.date.accessioned","2022-06-08T07:57:37Z"],["dc.date.available","2022-06-08T07:57:37Z"],["dc.date.issued","2016"],["dc.description.abstract","Conversions of natural ecosystems, e.g., from rain forests to managed plantations, result in significant changes in the hydrological cycle including periodic water scarcity. In Indonesia, large areas of forest were lost and extensive oil palm plantations were established over the last decades. We conducted a combined social and environmental study in a region of recent land-use change, the Jambi Province on Sumatra. The objective was to derive complementary lines of arguments to provide balanced insights into environmental perceptions and eco-hydrological processes accompanying land-use change. Interviews with villagers highlighted concerns regarding decreasing water levels in wells during dry periods and increasing fluctuations in stream flow between rainy and dry periods. Periodic water scarcity was found to severely impact livelihoods, which increased social polarization. Sap flux measurements on forest trees and oil palms indicate that oil palm plantations use as much water as forests for transpiration. Eddy covariance analyses of evapotranspiration over oil palm point to substantial additional sources of evaporation in oil palm plantations such as the soil and epiphytes. Stream base flow from a catchment dominated by oil palms was lower than from a catchment dominated by rubber plantations; both showed high peaks after rainfall. An estimate of erosion indicated approximately 30 cm of topsoil loss after forest conversion to both oil palm and rubber plantations. Analyses of climatic variables over the last 20 years and of a standardized precipitation evapotranspiration index for the last century suggested that droughts are recurrent in the area, but have not increased in frequency or intensity. Consequently, we assume that conversions of rain forest ecosystems to oil palm plantations lead to a redistribution of precipitated water by runoff, which leads to the reported periodic water scarcity. Our combined social and environmental approach points to significant and thus far neglected eco-hydrological consequences of oil palm expansion."],["dc.description.sponsorship","Open-Access-Publikationsfonds 2016"],["dc.identifier.doi","10.5751/ES-08214-210205"],["dc.identifier.fs","620597"],["dc.identifier.gro","3147091"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/13227"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/110156"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-575"],["dc.notes.status","final"],["dc.notes.submitter","chake"],["dc.relation","SFB 990: Ökologische und sozioökonomische Funktionen tropischer Tieflandregenwald-Transformationssysteme (Sumatra, Indonesien)"],["dc.relation","SFB 990 | A | A02: Wassernutzungseigenschaften von Bäumen und Palmen in Regenwald-Transformationssystemen Zusammenfassung"],["dc.relation","SFB 990 | A | A03: Untersuchung von Land-Atmosphäre Austauschprozesse in Landnutzungsänderungs-Systemen"],["dc.relation","SFB 990 | A | A04: Carbon stock, turnover and functions in heavily weathered soils under lowland rainforest transformation systems"],["dc.relation","SFB 990 | B | B10: Landschaftsbezogene Bewertung der ökologischen und sozioökonomischen Funktionen von Regenwald- Transformationssystemen in Sumatra (Indonesien)"],["dc.relation","SFB 990 | C | C02: Soziale Transformationsprozesse und nachhaltige Ressourcennutzung im ländlichen Jambi"],["dc.relation.issn","1708-3087"],["dc.relation.orgunit","Fakultät für Geowissenschaften und Geographie"],["dc.relation.orgunit","Abteilung Ökosystemmodellierung"],["dc.relation.orgunit","Abteilung Bioklimatologie"],["dc.rights","Goescholar"],["dc.rights.access","openAccess"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.subject","eco-hydrology; environmental perception; erosion; evapotranspiration; forest; land-use change; runoff; rural water supply; streamflow; transpiration"],["dc.subject.gro","Eco-hydrology"],["dc.subject.gro","Environmental perception"],["dc.subject.gro","Erosion"],["dc.subject.gro","Evapotranspiration"],["dc.subject.gro","Forest"],["dc.subject.gro","Land-use change"],["dc.subject.gro","Runoff"],["dc.subject.gro","Rural water supply"],["dc.subject.gro","Streamflow"],["dc.subject.gro","Transpiration"],["dc.subject.gro","sfb990_journalarticles"],["dc.title","Water scarcity and oil palm expansion: social views and environmental processes"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","2388"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Nature Communications"],["dc.bibliographiccitation.volume","9"],["dc.contributor.author","Guillaume, Thomas"],["dc.contributor.author","Kotowska, Martyna M"],["dc.contributor.author","Hertel, Dietrich"],["dc.contributor.author","Knohl, Alexander"],["dc.contributor.author","Krashevska, Valentyna"],["dc.contributor.author","Murtilaksono, Kukuh"],["dc.contributor.author","Scheu, Stefan"],["dc.contributor.author","Kuzyakov, Yakov"],["dc.date.accessioned","2019-11-14T15:50:02Z"],["dc.date.available","2019-11-14T15:50:02Z"],["dc.date.issued","2018"],["dc.description.abstract","Land-use intensification in the tropics plays an important role in meeting global demand for agricultural commodities but generates high environmental costs. Here, we synthesize the impacts of rainforest conversion to tree plantations of increasing management intensity on carbon stocks and dynamics. Rainforests in Sumatra converted to jungle rubber, rubber, and oil palm monocultures lost 116 Mg C ha-1, 159 Mg C ha-1, and 174 Mg C ha-1, respectively. Up to 21% of these carbon losses originated from belowground pools, where soil organic matter still decreases a decade after conversion. Oil palm cultivation leads to the highest carbon losses but it is the most efficient land use, providing the lowest ratio between ecosystem carbon storage loss or net primary production (NPP) decrease and yield. The imbalanced sharing of NPP between short-term human needs and maintenance of long-term ecosystem functions could compromise the ability of plantations to provide ecosystem services regulating climate, soil fertility, water, and nutrient cycles."],["dc.identifier.doi","10.1038/s41467-018-04755-y"],["dc.identifier.pmid","29921837"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/15599"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/62631"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation","SFB 990: Ökologische und sozioökonomische Funktionen tropischer Tieflandregenwald-Transformationssysteme (Sumatra, Indonesien)"],["dc.relation","SFB 990 | A | A03: Untersuchung von Land-Atmosphäre Austauschprozesse in Landnutzungsänderungs-Systemen"],["dc.relation","SFB 990 | A | A04: Carbon stock, turnover and functions in heavily weathered soils under lowland rainforest transformation systems"],["dc.relation","SFB 990 | B | B04: Pflanzenproduktivität und Ressourcenaufteilung im Wurzelraum entlang von Gradienten tropischer Landnutzungsintensität und Baumartenvielfalt"],["dc.relation","SFB 990 | B | B08: Struktur und Funktion des Zersetzersystems in Transformationssystemen von Tiefland-Regenwäldern"],["dc.relation.eissn","2041-1723"],["dc.relation.issn","2041-1723"],["dc.relation.orgunit","Abteilung Bioklimatologie"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0/"],["dc.subject.gro","sfb990_journalarticles"],["dc.title","Carbon costs and benefits of Indonesian rainforest conversion to plantations"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","3548"],["dc.bibliographiccitation.issue","9"],["dc.bibliographiccitation.journal","Global Change Biology"],["dc.bibliographiccitation.lastpage","3560"],["dc.bibliographiccitation.volume","21"],["dc.contributor.author","Guillaume, Thomas"],["dc.contributor.author","Damris, Muhammad"],["dc.contributor.author","Kuzyakov, Yakov"],["dc.date.accessioned","2018-11-07T09:52:30Z"],["dc.date.available","2018-11-07T09:52:30Z"],["dc.date.issued","2015"],["dc.description.abstract","Indonesia lost more tropical forest than all of Brazil in 2012, mainly driven by the rubber, oil palm, and timber industries. Nonetheless, the effects of converting forest to oil palm and rubber plantations on soil organic carbon (SOC) stocks remain unclear. We analyzed SOC losses after lowland rainforest conversion to oil palm, intensive rubber, and extensive rubber plantations in Jambi Province on Sumatra Island. The focus was on two processes: (1) erosion and (2) decomposition of soil organic matter. Carbon contents in the Ah horizon under oil palm and rubber plantations were strongly reduced up to 70% and 62%, respectively. The decrease was lower under extensive rubber plantations (41%). On average, converting forest to plantations led to a loss of 10 Mg C ha(-1) after about 15 years of conversion. The C content in the subsoil was similar under the forest and the plantations. We therefore assumed that a shift to higher values in plantation subsoil corresponds to the losses from the upper soil layer by erosion. Erosion was estimated by comparing the delta C-13 profiles in the soils under forest and under plantations. The estimated erosion was the strongest in oil palm (35 +/- 8 cm) and rubber (33 +/- 10 cm) plantations. The C-13 enrichment of SOC used as a proxy of its turnover indicates a decrease of SOC decomposition rate in the Ah horizon under oil palm plantations after forest conversion. Nonetheless, based on the lack of C input from litter, we expect further losses of SOC in oil palm plantations, which are a less sustainable land use compared to rubber plantations. We conclude that delta C-13 depth profiles may be a powerful tool to disentangle soil erosion and SOC mineralization after the conversion of natural ecosystems conversion to intensive plantations when soils show gradual increase of delta C-13 values with depth."],["dc.description.sponsorship","Deutsche Forschungsgemeinschaft (DFG) [CRC990]"],["dc.identifier.doi","10.1111/gcb.12907"],["dc.identifier.isi","000360998400032"],["dc.identifier.pmid","25707391"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/36140"],["dc.language.iso","en"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation","SFB 990: Ökologische und sozioökonomische Funktionen tropischer Tieflandregenwald-Transformationssysteme (Sumatra, Indonesien)"],["dc.relation","SFB 990 | A | A04: Carbon stock, turnover and functions in heavily weathered soils under lowland rainforest transformation systems"],["dc.relation.issn","1365-2486"],["dc.relation.issn","1354-1013"],["dc.rights","CC BY-NC 4.0"],["dc.subject.gro","sfb990_journalarticles"],["dc.title","Losses of soil carbon by converting tropical forest to plantations: erosion and decomposition estimated by delta C-13"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Nature Communications"],["dc.bibliographiccitation.volume","11"],["dc.contributor.author","Meijide Orive, Ana"],["dc.contributor.author","de la Rua, Cristina"],["dc.contributor.author","Guillaume, Thomas"],["dc.contributor.author","Röll, Alexander"],["dc.contributor.author","Hassler, Evelyn"],["dc.contributor.author","Stiegler, Christian"],["dc.contributor.author","Tjoa, Aiyen"],["dc.contributor.author","June, Tania"],["dc.contributor.author","Corre, Marife D."],["dc.contributor.author","Veldkamp, Edzo"],["dc.contributor.author","Knohl, Alexander"],["dc.date.accessioned","2020-12-10T18:09:53Z"],["dc.date.available","2020-12-10T18:09:53Z"],["dc.date.issued","2020"],["dc.description.abstract","The potential of palm-oil biofuels to reduce greenhouse gas (GHG) emissions compared with fossil fuels is increasingly questioned. So far, no measurement-based GHG budgets were available, and plantation age was ignored in Life Cycle Analyses (LCA). Here, we conduct LCA based on measured CO2, CH4 and N2O fluxes in young and mature Indonesian oil palm plantations. CO2 dominates the on-site GHG budgets. The young plantation is a carbon source (1012 ± 51 gC m−2 yr−1), the mature plantation a sink (−754 ± 38 gC m−2 yr−1). LCA considering the measured fluxes shows higher GHG emissions for palm-oil biodiesel than traditional LCA assuming carbon neutrality. Plantation rotation-cycle extension and earlier-yielding varieties potentially decrease GHG emissions. Due to the high emissions associated with forest conversion to oil palm, our results indicate that only biodiesel from second rotation-cycle plantations or plantations established on degraded land has the potential for pronounced GHG emission savings."],["dc.identifier.doi","10.1038/s41467-020-14852-6"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/73788"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.relation","SFB 990: Ökologische und sozioökonomische Funktionen tropischer Tieflandregenwald-Transformationssysteme (Sumatra, Indonesien)"],["dc.relation","SFB 990 | A | A03: Untersuchung von Land-Atmosphäre Austauschprozesse in Landnutzungsänderungs-Systemen"],["dc.relation","SFB 990 | A | A04: Carbon stock, turnover and functions in heavily weathered soils under lowland rainforest transformation systems"],["dc.relation","SFB 990 | A | A05: Optimierung des Nährstoffmanagements in Ölpalmplantagen und Hochrechnung plot-basierter Treibhausgasflüsse auf die Landschaftsebene transformierter Regenwälder"],["dc.relation.orgunit","Zentrum für Biodiversität und Nachhaltige Landnutzung"],["dc.relation.orgunit","Department für Nutzpflanzenwissenschaften"],["dc.relation.orgunit","Fakultät für Agrarwissenschaften"],["dc.relation.orgunit","Abteilung Pflanzenbau"],["dc.relation.orgunit","Abteilung Bioklimatologie"],["dc.rights","CC BY 4.0"],["dc.subject.gro","sfb990_journalarticles"],["dc.title","Measured greenhouse gas budgets challenge emission savings from palm-oil biodiesel"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]