Hertel, Dietrich

[["dc.bibliographiccitation.artnumber","191"],["dc.bibliographiccitation.journal","Frontiers in Plant Science"],["dc.bibliographiccitation.volume","6"],["dc.contributor.author","Hertel, Dietrich"],["dc.contributor.author","Barus, Henry"],["dc.contributor.author","Schuldt, Bernhard"],["dc.contributor.author","Kotowska, Martyna M."],["dc.contributor.author","Rajab, Yasmin Abou"],["dc.date.accessioned","2018-11-07T09:59:24Z"],["dc.date.available","2018-11-07T09:59:24Z"],["dc.date.issued","2015"],["dc.description.abstract","For decades it has been assumed that the largest vessels are generally found in roots and that vessel size and corresponding sapwood area-specific hydraulic conductivity are acropetally decreasing toward the distal twigs. However, recent studies from the perhumid tropics revealed a hump-shaped vessel size distribution. Worldwide tropical perhumid forests are extensively replaced by agroforestry systems often using introduced species of various biogeographical and climatic origins. Nonetheless, it is unknown so far what kind of hydraulic architectural patterns are developed in those agroforestry tree species and which impact this exerts regarding important tree functional traits, such as stem growth, hydraulic efficiency and wood density (WD). We investigated wood anatomical and hydraulic properties of the root, stem and branch wood in Theobroma cacao and five common shade tree species in agroforestry systems on Sulawesi (Indonesia); three of these were strictly perhumid tree species, and the other three tree species are tolerating seasonal drought. The overall goal of our study was to relate these properties to stem growth and other tree functional traits such as foliar nitrogen content and sapwood to leaf area ratio. Our results confirmed a hump-shaped vessel size distribution in nearly all species. Drought-adapted species showed divergent patterns of hydraulic conductivity, vessel density, and relative vessel lumen area between root, stem and branch wood compared to wet forest species. Confirming findings from natural old-growth forests in the same region, WD showed no relationship to specific conductivity. Overall, aboveground growth performance was better predicted by specific hydraulic conductivity than by foliar traits and WD. Our study results suggest that future research on conceptual trade-offs of tree hydraulic architecture should consider biogeographical patterns underlining the importance of anatomical adaptation mechanisms to environment."],["dc.description.sponsorship","Open Access Publikationsfonds 2015"],["dc.identifier.doi","10.3389/fpls.2015.00191"],["dc.identifier.isi","000352504600001"],["dc.identifier.pmid","25873922"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/11858"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/37578"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation","SFB 990 | B | B04: Pflanzenproduktivität und Ressourcenaufteilung im Wurzelraum entlang von Gradienten tropischer Landnutzungsintensität und Baumartenvielfalt"],["dc.relation.eissn","1664-462X"],["dc.relation.issn","1664-462X"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.subject.gro","sfb990_journalarticles"],["dc.title","Patterns in hydraulic architecture from roots to branches in six tropical tree species from cacao agroforestry and their relation to wood density and stem growth"],["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.artnumber","e0149949"],["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","PLoS One"],["dc.bibliographiccitation.lastpage","22"],["dc.bibliographiccitation.volume","11"],["dc.contributor.author","Abou Rajab, Yasmin"],["dc.contributor.author","Leuschner, Christoph"],["dc.contributor.author","Barus, Henry"],["dc.contributor.author","Tjoa, Aiyen"],["dc.contributor.author","Hertel, Dietrich"],["dc.date.accessioned","2017-11-28T10:03:31Z"],["dc.date.available","2017-11-28T10:03:31Z"],["dc.date.issued","2016"],["dc.description.abstract","One of the main drivers of tropical forest loss is their conversion to oil palm, soy or cacao plantations with low biodiversity and greatly reduced carbon storage. Southeast Asian cacao plantations are often established under shade tree cover, but are later converted to non-shaded monocultures to avoid resource competition. We compared three co-occurring cacao cultivation systems (3 replicate stands each) with different shade intensity (non-shaded monoculture, cacao with the legume Gliricidia sepium shade trees, and cacao with several shade tree species) in Sulawesi (Indonesia) with respect to above- and belowground biomass and productivity, and cacao bean yield. Total biomass C stocks (above- and belowground) increased fivefold from the monoculture to the multi-shade tree system (from 11 to 57 Mg ha-1), total net primary production rose twofold (from 9 to 18 Mg C ha-1 yr-1). This increase was associated with a 6fold increase in aboveground biomass, but only a 3.5fold increase in root biomass, indicating a clear shift in C allocation to aboveground tree organs with increasing shade for both cacao and shade trees. Despite a canopy cover increase from 50 to 93%, cacao bean yield remained invariant across the systems (variation: 1.1–1.2 Mg C ha-1 yr-1). The monocultures had a twice as rapid leaf turnover suggesting that shading reduces the exposure of cacao to atmospheric drought, probably resulting in greater leaf longevity. Thus, contrary to general belief, cacao bean yield does not necessarily decrease under shading which seems to reduce physical stress. If planned properly, cacao plantations under a shade tree cover allow combining high yield with benefits for carbon sequestration and storage, production system stability under stress, and higher levels of animal and plant diversity."],["dc.description.sponsorship","Open-Access-Publikationsfonds 2016"],["dc.identifier.doi","10.1371/journal.pone.0149949"],["dc.identifier.fs","619834"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/13130"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/10611"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","final"],["dc.relation","SFB 990: Ökologische und sozioökonomische Funktionen tropischer Tieflandregenwald-Transformationssysteme (Sumatra, Indonesien)"],["dc.relation","SFB 990 | B | B04: Pflanzenproduktivität und Ressourcenaufteilung im Wurzelraum entlang von Gradienten tropischer Landnutzungsintensität und Baumartenvielfalt"],["dc.relation.eissn","1932-6203"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.subject.gro","sfb990_journalarticles"],["dc.title","Cacao Cultivation under Diverse Shade Tree Cover Allows High Carbon Storage and Sequestration without Yield Losses"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","unknown"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","288"],["dc.bibliographiccitation.journal","Forest Ecology and Management"],["dc.bibliographiccitation.lastpage","298"],["dc.bibliographiccitation.volume","379"],["dc.contributor.author","Pransiska, Yuna"],["dc.contributor.author","Triadiati, Triadiati"],["dc.contributor.author","Tjitrosoedirjo, Soekisman"],["dc.contributor.author","Hertel, Dietrich"],["dc.contributor.author","Kotowska, M. M."],["dc.date.accessioned","2018-11-07T10:06:49Z"],["dc.date.available","2018-11-07T10:06:49Z"],["dc.date.issued","2016"],["dc.description.abstract","Deforestation and land-use change are occurring on an increasing scale throughout Indonesia with profound effects on ecosystem structure and functions marked by consequences in biogeochemical cycles. This study investigates the influence of forest conversion on soil organic matter as well as the fine and coarse root system. Furthermore, the relationships between carbon (C) and nitrogen (N) stocks in the root biomass were related to the total aboveground tree biomass. Root biomass and fine root morphology were investigated in 150 cm-deep soil pits along a gradient of increasing land-use intensity, i.e. in natural forest, rubber under a natural forest cover (jungle rubber'), rubber and oil palm monocultures. Total root biomass generally decreased with increasing land-use intensity together with aboveground tree biomass. Subsequently, carbon and nutrient stocks in the root system were over 50% lower in the monoculture plantations compared to the natural forest. Vertical root distribution showed distinct different patterns across the land-use types with a pronounced logarithmic decrease in vertical total root abundance in the natural forest and the jungle rubber plots that was less distinctive in the plantation systems. However, fine root morphology in the jungle rubber system revealed a large specific root area and specific root tip abundance, therefore partly compensating for the reduction in the fine root system after forest conversion. Soil organic matter was particularly low in rubber plantations. In conclusion, the results of our study suggests that conversion of natural forest to agroforestry and monoculture systems has a profound belowground impact reflected in the decrease of root biomass, nutrient stocks in coarse roots, and total soil organic matter. (C) 2016 Elsevier B.V. All rights reserved."],["dc.description.sponsorship","German Research Foundation (DFG); [CRC 990]"],["dc.identifier.doi","10.1016/j.foreco.2016.07.038"],["dc.identifier.isi","000383816600030"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/39164"],["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 | B | B04: Pflanzenproduktivität und Ressourcenaufteilung im Wurzelraum entlang von Gradienten tropischer Landnutzungsintensität und Baumartenvielfalt"],["dc.relation.issn","1872-7042"],["dc.relation.issn","0378-1127"],["dc.subject.gro","sfb990_journalarticles"],["dc.subject.gro","sfb990_abs"],["dc.title","Forest conversion impacts on the fine and coarse root system, and soil organic matter in tropical lowlands of Sumatera (Indonesia)"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","3620"],["dc.bibliographiccitation.issue","10"],["dc.bibliographiccitation.journal","Global Change Biology"],["dc.bibliographiccitation.lastpage","3634"],["dc.bibliographiccitation.volume","21"],["dc.contributor.author","Kotowska, Martyna M."],["dc.contributor.author","Leuschner, Christoph"],["dc.contributor.author","Triadiati, Triadiati"],["dc.contributor.author","Meriem, Selis"],["dc.contributor.author","Hertel, Dietrich"],["dc.date.accessioned","2018-07-26T16:30:03Z"],["dc.date.available","2018-07-26T16:30:03Z"],["dc.date.issued","2015"],["dc.description.abstract","Natural forests in South‐East Asia have been extensively converted into other land‐use systems in the past decades and still show high deforestation rates. Historically, lowland forests have been converted into rubber forests, but more recently, the dominant conversion is into oil palm plantations. While it is expected that the large‐scale conversion has strong effects on the carbon cycle, detailed studies quantifying carbon pools and total net primary production (NPPtotal) in above‐ and belowground tree biomass in land‐use systems replacing rainforest (incl. oil palm plantations) are rare so far. We measured above‐ and belowground carbon pools in tree biomass together with NPPtotal in natural old‐growth forests, ‘jungle rubber’ agroforests under natural tree cover, and rubber and oil palm monocultures in Sumatra. In total, 32 stands (eight plot replicates per land‐use system) were studied in two different regions. Total tree biomass in the natural forest (mean: 384 Mg ha−1) was more than two times higher than in jungle rubber stands (147 Mg ha−1) and >four times higher than in monoculture rubber and oil palm plantations (78 and 50 Mg ha−1). NPPtotal was higher in the natural forest (24 Mg ha−1 yr−1) than in the rubber systems (20 and 15 Mg ha−1 yr−1), but was highest in the oil palm system (33 Mg ha−1 yr−1) due to very high fruit production (15–20 Mg ha−1 yr−1). NPPtotal was dominated in all systems by aboveground production, but belowground productivity was significantly higher in the natural forest and jungle rubber than in plantations. We conclude that conversion of natural lowland forest into different agricultural systems leads to a strong reduction not only in the biomass carbon pool (up to 166 Mg C ha−1) but also in carbon sequestration as carbon residence time (i.e. biomass‐C:NPP‐C) was 3–10 times higher in the natural forest than in rubber and oil palm plantations."],["dc.identifier.doi","10.1111/gcb.12979"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/15201"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation","SFB 990: Ökologische und sozioökonomische Funktionen tropischer Tieflandregenwald-Transformationssysteme (Sumatra, Indonesien)"],["dc.relation","SFB 990 | B | B04: Pflanzenproduktivität und Ressourcenaufteilung im Wurzelraum entlang von Gradienten tropischer Landnutzungsintensität und Baumartenvielfalt"],["dc.subject.gro","sfb990_journalarticles"],["dc.title","Quantifying above‐ and belowground biomass carbon loss with forest conversion in tropical lowlands of Sumatra (Indonesia)"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","349"],["dc.bibliographiccitation.issue","1-2"],["dc.bibliographiccitation.journal","Plant and Soil"],["dc.bibliographiccitation.lastpage","369"],["dc.bibliographiccitation.volume","422"],["dc.contributor.author","Rajab, Yasmin Abou"],["dc.contributor.author","Hölscher, Dirk"],["dc.contributor.author","Leuschner, Christoph"],["dc.contributor.author","Barus, Henry"],["dc.contributor.author","Tjoa, Aiyen"],["dc.contributor.author","Hertel, Dietrich"],["dc.date.accessioned","2018-01-09T15:04:15Z"],["dc.date.available","2018-01-09T15:04:15Z"],["dc.date.issued","2018"],["dc.description.abstract","Background and Aims To increase yield, cacao is planted increasingly in unshaded monocultures, replacing a more traditional cultivation under shade. We investigated how shade tree cover and species diversity affect the root system and its dynamics. Methods In a replicated study in Sulawesi (Indonesia), we studied the fine and coarse root system down to 3 m soil depth in three modern and more traditional cacao cultivation systems: unshaded cacao monoculture (Cacao-mono), cacao under either the legume Gliricidia sepium (Cacao-Gliricidia), or a diverse (> 6 species) shade tree cover (Cacao-multi). We analysed the vertical distribution of fine, large and coarse roots as well as fine root production, turnover and morphology on the species level. Results Stand-level fine root biomass showed a doubling with increasing shade tree cover (from 206 to 432 g m−2), but a tendency for a decrease in cacao fine root biomass. The presence of Gliricidia roots seemed to shift the cacao fine roots to a more shallow distribution, while the presence of shade tree roots in the Cacao-multi systems caused a biomass reduction and relative downward shift of the cacao roots. The turnover of cacao fine roots was much higher in the Cacao-multi stands than in the other two cultivation systems, although stand-level root production remained unchanged across the three systems. According to the stable isotope signature, Gliricidia extracted water from deeper soil layers than cacao, while no soil water partitioning was observed in the Cacao-multi stands. Conclusions Our data suggest that the cacao trees altered their fine root distribution patterns in response to root competition. Both interspecific competition and root system segregation seem to play an important role in cacao agroforests with different shade tree cover."],["dc.identifier.doi","10.1007/s11104-017-3456-x"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/11617"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.notes.status","final"],["dc.relation","SFB 990: Ökologische und sozioökonomische Funktionen tropischer Tieflandregenwald-Transformationssysteme (Sumatra, Indonesien)"],["dc.relation","SFB 990 | B | B04: Pflanzenproduktivität und Ressourcenaufteilung im Wurzelraum entlang von Gradienten tropischer Landnutzungsintensität und Baumartenvielfalt"],["dc.subject.gro","sfb990_journalarticles"],["dc.title","Effects of shade tree cover and diversity on root system structure and dynamics in cacao agroforests"],["dc.title.subtitle","The role of root competition and space partitioning"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","160"],["dc.bibliographiccitation.journal","Agricultural and Forest Meteorology"],["dc.bibliographiccitation.lastpage","171"],["dc.bibliographiccitation.volume","274"],["dc.contributor.author","Röll, Alexander"],["dc.contributor.author","Niu, F."],["dc.contributor.author","Meijide Orive, Ana"],["dc.contributor.author","Ahongshangbam, J."],["dc.contributor.author","Ehbrecht, M."],["dc.contributor.author","Guillaume, T."],["dc.contributor.author","Gunawan, D."],["dc.contributor.author","Hardanto, A."],["dc.contributor.author","Hendrayanto, null"],["dc.contributor.author","Hertel, Dietrich"],["dc.contributor.author","Kotowska, M.M."],["dc.contributor.author","Kreft, H."],["dc.contributor.author","Kuzyakov, Yakov"],["dc.contributor.author","Leuschner, Christoph"],["dc.contributor.author","Nomura, M."],["dc.contributor.author","Polle, Andrea"],["dc.contributor.author","Rembold, K."],["dc.contributor.author","Sahner, J."],["dc.contributor.author","Seidel, Dominik"],["dc.contributor.author","Zemp, D.C."],["dc.contributor.author","Knohl, Alexander"],["dc.contributor.author","Hölscher, Dirk"],["dc.date.accessioned","2019-11-14T15:27:44Z"],["dc.date.available","2019-11-14T15:27:44Z"],["dc.date.issued","2019"],["dc.description.abstract","Following large-scale conversion of rainforest, rubber and oil palm plantations dominate lowland Sumatra (Indonesia) and other parts of South East Asia today, with potentially far-reaching ecohydrological consequences. We assessed how such land-use change affects plant transpiration by sap flux measurements at 42 sites in selectively logged rainforests, agroforests and rubber and oil palm monoculture plantations in the lowlands of Sumatra. Site-to-site variability in stand-scale transpiration and tree-level water use were explained by stand structure, productivity, soil properties and plantation age. Along a land-use change trajectory forest-rubber-oil palm, time-averaged transpiration decreases by 43 ± 11% from forest to rubber monoculture plantations, but rebounds with conversion to smallholder oil palm plantations. We uncovered that particularly commercial, intensive oil palm cultivation leads to high transpiration (827 ± 77 mm yr −1), substantially surpassing rates at our forest sites (589 ± 52 mm yr −1). Compared to smallholder oil palm, land-use intensification leads to 1.7-times higher transpiration in commercial plantations. Combined with severe soil degradation, the high transpiration may cause periodical water scarcity for humans in oil palm-dominated landscapes. As oil palm is projected to further expand, severe shifts in water cycling after land-cover change and water scarcity due to land-use intensification may become more widesprea"],["dc.identifier.doi","10.1016/j.agrformet.2019.04.017"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/62625"],["dc.language.iso","en"],["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 | B04: Pflanzenproduktivität und Ressourcenaufteilung im Wurzelraum entlang von Gradienten tropischer Landnutzungsintensität und Baumartenvielfalt"],["dc.relation","SFB 990 | B | B06: Taxonomische, funktionelle, phylogenetische und biogeographische Diversität vaskulärer Pflanzen in Regenwald-Transformationssystemen auf Sumatra (Indonesien)"],["dc.relation","SFB 990 | B | B07: Functional diversity of mycorrhizal fungi along a tropical land-use gradient"],["dc.relation","SFB 990 | B | B11: Biodiversitäts-Anreicherung in Ölpalmen-Plantagen: Pflanzliche Sukzession und Integration"],["dc.relation.issn","0168-1923"],["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.subject.gro","sfb990_journalarticles"],["dc.title","Transpiration on the rebound in lowland Sumatra"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","601"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Oecologia"],["dc.bibliographiccitation.lastpage","618"],["dc.bibliographiccitation.volume","180"],["dc.contributor.author","Kotowska, Martyna M."],["dc.contributor.author","Leuschner, Christoph"],["dc.contributor.author","Triadiati, Triadiati"],["dc.contributor.author","Hertel, Dietrich"],["dc.date.accessioned","2018-07-19T14:33:27Z"],["dc.date.available","2018-07-19T14:33:27Z"],["dc.date.issued","2016"],["dc.description.abstract","Tropical landscapes are not only rapidly transformed by ongoing land-use change, but are additionally confronted by increasing seasonal climate variation. There is an increasing demand for studies analyzing the effects and feedbacks on ecosystem functioning of large-scale conversions of tropical natural forest into intensively managed cash crop agriculture. We analyzed the seasonality of aboveground litterfall, fine root litter production, and aboveground woody biomass production (ANPPwoody) in natural lowland forests, rubber agroforests under natural tree cover (“jungle rubber”), rubber and oil palm monocultures along a forest-to-agriculture transformation gradient in Sumatra. We hypothesized that the temporal fluctuation of litter production increases with increasing land-use intensity, while the associated nutrient fluxes and nutrient use efficiency (NUE) decrease. Indeed, the seasonal variation of aboveground litter production and ANPPwoody increased from the natural forest to the plantations, while aboveground litterfall generally decreased. Nutrient return through aboveground litter was mostly highest in the natural forest; however, it was significantly lower only in rubber plantations. NUE of N, P and K was lowest in the oil palm plantations, with natural forest and the rubber systems showing comparably high values. Root litter production was generally lower than leaf litter production in all systems, while the root-to-leaf ratio of litter C flux increased along the land-use intensity gradient. Our results suggest that nutrient and C cycles are more directly affected by climate seasonality in species-poor agricultural systems than in species-rich forests, and therefore might be more susceptible to inter-annual climate fluctuation and climate change."],["dc.identifier.doi","10.1007/s00442-015-3481-5"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/15191"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation","SFB 990 | B | B04: Pflanzenproduktivität und Ressourcenaufteilung im Wurzelraum entlang von Gradienten tropischer Landnutzungsintensität und Baumartenvielfalt"],["dc.relation.issn","0029-8549"],["dc.subject.gro","sfb990_journalarticles"],["dc.title","Conversion of tropical lowland forest reduces nutrient return through litterfall, and alters nutrient use efficiency and seasonality of net primary production"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","299"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Annals of Forest Research"],["dc.bibliographiccitation.lastpage","310"],["dc.bibliographiccitation.volume","59"],["dc.contributor.author","Meriem, S."],["dc.contributor.author","Tjitrosoedirjo, Soekisman"],["dc.contributor.author","Kotowska, M. M."],["dc.contributor.author","Hertel, Dietrich"],["dc.contributor.author","Triadiati, Triadiati"],["dc.date.accessioned","2018-11-07T10:19:44Z"],["dc.date.available","2018-11-07T10:19:44Z"],["dc.date.issued","2016"],["dc.description.abstract","Rapid transformation of natural forests into other land-use systems in the lowlands of Sumatra, Indonesia, strongly reduces total aboveground biomass and affects nutrient cycling. However, the consequences of this conversion for C and N stocks of dead wood remains poorly understood particularly in natural forests and jungle rubber. This study examined the differences in dead wood abundance, mass, and C, N and lignin concentrations of three decay stages of dead wood as well as the stocks of these chemical components stored in dead wood. Standing and fallen dead wood was determined as coarse woody debris with diameter > 10 cm and classified into three decay stages of wood. Mass of dead wood was estimated using allometric equation. Total C and N stocks in dead wood in the natural forests (4.5 t C ha(-1), 0.05 t N ha(-1), respectively) were three times higher than those in the jungle rubber (1.5 t C ha(-1), 0.02 t N ha(-1), respectively). The stocks of C and N at early and advanced wood decay stages in the natural forests were also higher than those in the jungle rubber. The decay stages showed pronounced differences in concentrations of chemical components. With advancing stage of wood decay, N concentration increased and C/N ratio decreased, while concentrations of C and lignin were variable. The distribution of dead wood mass and stocks of C, and lignin were found to be higher in the early decay than those in the advanced decay stage. Higher input of dead wood in natural forests indicated a higher importance of dead wood decay in natural forests than in jungle rubber systems. Thus, replacing natural forests with jungle rubber strongly reduces total C and N stocks which might have a marked negative effect on the ecosystems' nutrient turnover and cycle."],["dc.identifier.doi","10.15287/afr.2016.524"],["dc.identifier.isi","000390828700011"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/14302"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/41723"],["dc.notes.intern","Merged from goescholar"],["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 | B | B04: Pflanzenproduktivität und Ressourcenaufteilung im Wurzelraum entlang von Gradienten tropischer Landnutzungsintensität und Baumartenvielfalt"],["dc.relation.issn","1844-8135"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.subject.gro","sfb990_journalarticles"],["dc.title","Carbon and nitrogen stocks in dead wood of tropical lowland forests as dependent on wood decay stages and land-use intensity"],["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","1511"],["dc.bibliographiccitation.issue","10"],["dc.bibliographiccitation.journal","Nature Ecology & Evolution"],["dc.bibliographiccitation.lastpage","1519"],["dc.bibliographiccitation.volume","1"],["dc.contributor.author","Barnes, Andrew D."],["dc.contributor.author","Allen, Kara"],["dc.contributor.author","Kreft, Holger"],["dc.contributor.author","Corre, Marife D."],["dc.contributor.author","Jochum, Malte"],["dc.contributor.author","Veldkamp, Edzo"],["dc.contributor.author","Clough, Yann"],["dc.contributor.author","Daniel, Rolf"],["dc.contributor.author","Darras, Kevin"],["dc.contributor.author","Denmead, Lisa H."],["dc.contributor.author","Farikhah Haneda, Noor"],["dc.contributor.author","Hertel, Dietrich"],["dc.contributor.author","Knohl, Alexander"],["dc.contributor.author","Kotowska, Martyna M."],["dc.contributor.author","Kurniawan, Syahrul"],["dc.contributor.author","Meijide, Ana"],["dc.contributor.author","Rembold, Katja"],["dc.contributor.author","Edho Prabowo, Walesa"],["dc.contributor.author","Schneider, Dominik"],["dc.contributor.author","Tscharntke, Teja"],["dc.contributor.author","Brose, Ulrich"],["dc.date.accessioned","2018-03-13T14:12:09Z"],["dc.date.available","2018-03-13T14:12:09Z"],["dc.date.issued","2017"],["dc.description.abstract","The conversion of tropical rainforest to agricultural systems such as oil palm alters biodiversity across a large range of interacting taxa and trophic levels. Yet, it remains unclear how direct and cascading effects of land-use change simultaneously drive ecological shifts. Combining data from a multi-taxon research initiative in Sumatra, Indonesia, we show that direct and cascading land-use effects alter biomass and species richness of taxa across trophic levels ranging from microorganisms to birds. Tropical land use resulted in increases in biomass and species richness via bottom-up cascading effects, but reductions via direct effects. When considering direct and cascading effects together, land use was found to reduce biomass and species richness, with increasing magnitude at higher trophic levels. Our analyses disentangle the multifaceted effects of land-use change on tropical ecosystems, revealing that biotic interactions on broad taxonomic scales influence the ecological outcome of anthropogenic perturbations to natural ecosystems."],["dc.identifier.doi","10.1038/s41559-017-0275-7"],["dc.identifier.pmid","29185508"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/13011"],["dc.language.iso","en"],["dc.notes.status","final"],["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 | A05: Optimierung des Nährstoffmanagements in Ölpalmplantagen und Hochrechnung plot-basierter Treibhausgasflüsse auf die Landschaftsebene transformierter Regenwälder"],["dc.relation","SFB 990 | B | B01: Structure, stability and functioning of macro-invertebrate communities in rainforest transformation systems in Sumatra (Indonesia)"],["dc.relation","SFB 990 | B | B02: Impact of rainforest transformation on phylogenetic and functional diversity of soil prokaryotic communities in Sumatra (Indonesia)"],["dc.relation","SFB 990 | B | B04: Pflanzenproduktivität und Ressourcenaufteilung im Wurzelraum entlang von Gradienten tropischer Landnutzungsintensität und Baumartenvielfalt"],["dc.relation","SFB 990 | B | B06: Taxonomische, funktionelle, phylogenetische und biogeographische Diversität vaskulärer Pflanzen in Regenwald-Transformationssystemen auf Sumatra (Indonesien)"],["dc.relation","SFB 990 | B | B09: Oberirdische Biodiversitätsmuster und Prozesse in Regenwaldtransformations-Landschaften"],["dc.relation.eissn","2397-334X"],["dc.relation.orgunit","Abteilung Bioklimatologie"],["dc.subject.gro","sfb990_journalarticles"],["dc.title","Direct and cascading impacts of tropical land-use change on multi-trophic biodiversity"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["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"]]