Hertel, Dietrich

[["dc.bibliographiccitation.artnumber","e47128"],["dc.bibliographiccitation.issue","10"],["dc.bibliographiccitation.journal","PLoS ONE"],["dc.bibliographiccitation.volume","7"],["dc.contributor.author","Homeier, Jürgen"],["dc.contributor.author","Hertel, Dietrich"],["dc.contributor.author","Camenzind, Tessa"],["dc.contributor.author","Cumbicus, Nixon L."],["dc.contributor.author","Maraun, Mark"],["dc.contributor.author","Martinson, Guntars O."],["dc.contributor.author","Poma, L. Nohemy"],["dc.contributor.author","Rillig, Matthias C."],["dc.contributor.author","Sandmann, Dorothee"],["dc.contributor.author","Scheu, Stefan"],["dc.contributor.author","Veldkamp, Edzo"],["dc.contributor.author","Wilcke, Wolfgang"],["dc.contributor.author","Wullaert, Hans"],["dc.contributor.author","Leuschner, Christoph"],["dc.contributor.editor","Chen, Han Y. H."],["dc.date.accessioned","2017-09-07T11:54:53Z"],["dc.date.available","2017-09-07T11:54:53Z"],["dc.date.issued","2012"],["dc.description.abstract","Tropical regions are facing increasing atmospheric inputs of nutrients, which will have unknown consequences for the structure and functioning of these systems. Here, we show that Neotropical montane rainforests respond rapidly to moderate additions of N (50 kg ha(-1) yr(-1)) and P (10 kg ha(-1) yr(-1)). Monitoring of nutrient fluxes demonstrated that the majority of added nutrients remained in the system, in either soil or vegetation. N and P additions led to not only an increase in foliar N and P concentrations, but also altered soil microbial biomass, standing fine root biomass, stem growth, and litterfall. The different effects suggest that trees are primarily limited by P, whereas some processes-notably aboveground productivity--are limited by both N and P. Highly variable and partly contrasting responses of different tree species suggest marked changes in species composition and diversity of these forests by nutrient inputs in the long term. The unexpectedly fast response of the ecosystem to moderate nutrient additions suggests high vulnerability of tropical montane forests to the expected increase in nutrient inputs."],["dc.identifier.doi","10.1371/journal.pone.0047128"],["dc.identifier.gro","3150124"],["dc.identifier.pmid","23071734"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/8325"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/6854"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","final"],["dc.relation.issn","1932-6203"],["dc.rights","CC BY 2.5"],["dc.rights.uri","https://creativecommons.org/licenses/by/2.5"],["dc.title","Tropical Andean Forests Are Highly Susceptible to Nutrient Inputs—Rapid Effects of Experimental N and P Addition to an Ecuadorian Montane Forest"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1675"],["dc.bibliographiccitation.issue","12"],["dc.bibliographiccitation.journal","Forests"],["dc.bibliographiccitation.volume","12"],["dc.contributor.author","Röll, Alexander"],["dc.contributor.author","Ramesha, Mundre N."],["dc.contributor.author","Link, Roman M."],["dc.contributor.author","Hertel, Dietrich"],["dc.contributor.author","Schuldt, Bernhard"],["dc.contributor.author","Patil, Shekhargouda L."],["dc.contributor.author","Hölscher, Dirk"],["dc.date.accessioned","2022-02-01T10:31:47Z"],["dc.date.available","2022-02-01T10:31:47Z"],["dc.date.issued","2021"],["dc.description.abstract","Farmland tree cultivation is considered an important option for enhancing wood production. In South India, the native leaf-deciduous tree species Melia dubia is popular for short-rotation plantations. Across a rainfall gradient from 420 to 2170 mm year–1, we studied 186 farmland woodlots between one and nine years in age. The objectives were to identify the main factors controlling aboveground biomass (AGB) and growth rates. A power-law growth model predicts an average stand-level AGB of 93.8 Mg ha–1 for nine-year-old woodlots. The resulting average annual AGB increment over the length of the rotation cycle is 10.4 Mg ha–1 year–1, which falls within the range reported for other tropical tree plantations. When expressing the parameters of the growth model as functions of management, climate and soil variables, it explains 65% of the variance in AGB. The results indicate that water availability is the main driver of the growth of M. dubia. Compared to the effects of water availability, the effects of soil nutrients are 26% to 60% smaller. We conclude that because of its high biomass accumulation rates in farm forestry, M. dubia is a promising candidate for short-rotation plantations in South India and beyond."],["dc.description.abstract","Farmland tree cultivation is considered an important option for enhancing wood production. In South India, the native leaf-deciduous tree species Melia dubia is popular for short-rotation plantations. Across a rainfall gradient from 420 to 2170 mm year–1, we studied 186 farmland woodlots between one and nine years in age. The objectives were to identify the main factors controlling aboveground biomass (AGB) and growth rates. A power-law growth model predicts an average stand-level AGB of 93.8 Mg ha–1 for nine-year-old woodlots. The resulting average annual AGB increment over the length of the rotation cycle is 10.4 Mg ha–1 year–1, which falls within the range reported for other tropical tree plantations. When expressing the parameters of the growth model as functions of management, climate and soil variables, it explains 65% of the variance in AGB. The results indicate that water availability is the main driver of the growth of M. dubia. Compared to the effects of water availability, the effects of soil nutrients are 26% to 60% smaller. We conclude that because of its high biomass accumulation rates in farm forestry, M. dubia is a promising candidate for short-rotation plantations in South India and beyond."],["dc.description.sponsorship","Open-Access-Publikationsfonds 2021"],["dc.identifier.doi","10.3390/f12121675"],["dc.identifier.pii","f12121675"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/98945"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-517"],["dc.relation.eissn","1999-4907"],["dc.relation.orgunit","Abteilung Waldbau und Waldökologie der Tropen"],["dc.rights","CC BY 4.0"],["dc.title","Water Availability Controls the Biomass Increment of Melia dubia in South India"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["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.artnumber","e47192"],["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.issue","10"],["dc.bibliographiccitation.journal","PloS one"],["dc.bibliographiccitation.lastpage","7"],["dc.bibliographiccitation.volume","7"],["dc.contributor.author","Kessler, Michael"],["dc.contributor.author","Hertel, Dietrich"],["dc.contributor.author","Jungkunst, Hermann F."],["dc.contributor.author","Kluge, Jürgen"],["dc.contributor.author","Abrahamczyk, Stefan"],["dc.contributor.author","Bos, Merijn Marinus"],["dc.contributor.author","Buchori, Damayanti"],["dc.contributor.author","Gerold, Gerhard"],["dc.contributor.author","Gradstein, S. Robbert"],["dc.contributor.author","Köhler, Stefan"],["dc.contributor.author","Leuschner, Christoph"],["dc.contributor.author","Moser, Gerald"],["dc.contributor.author","Pitopang, Ramadhanil"],["dc.contributor.author","Saleh, Shahabuddin"],["dc.contributor.author","Schulze, Christian Hansjoachim"],["dc.contributor.author","Sporn, Simone Goda"],["dc.contributor.author","Steffan-Dewenter, Ingolf"],["dc.contributor.author","Tjitrosoedirdjo, Sri Sudarmiyati"],["dc.contributor.author","Tscharntke, Teja"],["dc.contributor.editor","Bond-Lamberty, Ben"],["dc.date.accessioned","2018-07-05T16:08:40Z"],["dc.date.available","2018-07-05T16:08:40Z"],["dc.date.issued","2012"],["dc.description.abstract","Managing ecosystems for carbon storage may also benefit biodiversity conservation, but such a potential ‘win-win’ scenario has not yet been assessed for tropical agroforestry landscapes. We measured above- and below-ground carbon stocks as well as the species richness of four groups of plants and eight of animals on 14 representative plots in Sulawesi, Indonesia, ranging from natural rainforest to cacao agroforests that have replaced former natural forest. The conversion of natural forests with carbon stocks of 227–362 Mg C ha−1 to agroforests with 82–211 Mg C ha−1 showed no relationships to overall biodiversity but led to a significant loss of forest-related species richness. We conclude that the conservation of the forest-related biodiversity, and to a lesser degree of carbon stocks, mainly depends on the preservation of natural forest habitats. In the three most carbon-rich agroforestry systems, carbon stocks were about 60% of those of natural forest, suggesting that 1.6 ha of optimally managed agroforest can contribute to the conservation of carbon stocks as much as 1 ha of natural forest. However, agroforestry systems had comparatively low biodiversity, and we found no evidence for a tight link between carbon storage and biodiversity. Yet, potential win-win agroforestry management solutions include combining high shade-tree quality which favours biodiversity with cacao-yield adapted shade levels."],["dc.description.sponsorship","Open-Access-Publikationsfonds 2012"],["dc.identifier.doi","10.1371/journal.pone.0047192"],["dc.identifier.gro","3150069"],["dc.identifier.pmid","23077569"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/8161"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/15169"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","final"],["dc.relation.issn","1932-6203"],["dc.rights","CC BY 2.5"],["dc.rights.uri","https://creativecommons.org/licenses/by/2.5"],["dc.title","Can Joint Carbon and Biodiversity Management in Tropical Agroforestry Landscapes Be Optimized?"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1103"],["dc.bibliographiccitation.issue","7"],["dc.bibliographiccitation.journal","Ecosystems"],["dc.bibliographiccitation.lastpage","1116"],["dc.bibliographiccitation.volume","12"],["dc.contributor.author","Meinen, Catharina"],["dc.contributor.author","Hertel, Dietrich"],["dc.contributor.author","Leuschner, Christoph"],["dc.date.accessioned","2018-11-07T11:22:31Z"],["dc.date.available","2018-11-07T11:22:31Z"],["dc.date.issued","2009"],["dc.description.abstract","In contrast to studies on aboveground processes, the effect of species diversity on belowground productivity and fine-root regrowth after disturbance is still poorly studied in forests. In 12 old-growth broad-leaved forest stands, we tested the hypotheses that (i) the productivity and recovery rate (regrowth per standing biomass) of the fine-root system (root diameter < 2 mm) increase with increasing tree species diversity, and that (ii) the seasonality of fine-root biomass and necromass is more pronounced in pure than in tree species-rich stands as a consequence of non-synchronous root biomass peaks of the different species. We investigated stands with 1, 3, and 5 dominant tree species growing under similar soil and climate conditions for changes in fine-root biomass and necromass during a 12-month period and estimated fine-root productivity with two independent approaches (ingrowth cores, sequential coring). According to the analysis of 360 ingrowth cores, fine-root growth into the root-free soil increased with tree species diversity from 72 g m(-2) y(-1) in the monospecific plots to 166 g m(-2) y(-1) in the 5-species plots, indicating an enhanced recovery rate of the root system after soil disturbance with increasing species diversity (0.26, 0.34, and 0.51 y(-1) in 1-, 3-, and 5-species plots, respectively). Fine-root productivity as approximated by the sequential coring data also indicated a roughly threefold increase from the monospecific to the 5-species stand. We found no indication of a more pronounced seasonality of fine-root mass in species-poor as compared to species-rich stands. We conclude that species identification on the fine root level, as conducted here, may open new perspectives on tree species effects on root system dynamics. Our study produced first evidence in support of the hypothesis that the fine-root systems of more diverse forest stands are more productive and recover more rapidly after soil disturbance than that of species-poor forests."],["dc.description.sponsorship","German Research Council (DFG)"],["dc.identifier.doi","10.1007/s10021-009-9271-3"],["dc.identifier.isi","000272028000003"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?goescholar/4158"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/56009"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.issn","1432-9840"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Root Growth and Recovery in Temperate Broad-Leaved Forest Stands Differing in Tree Species Diversity"],["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","303"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Trees"],["dc.bibliographiccitation.lastpage","315"],["dc.bibliographiccitation.volume","22"],["dc.contributor.author","Hertel, Dietrich"],["dc.contributor.author","Wesche, Karsten"],["dc.date.accessioned","2018-11-07T11:14:58Z"],["dc.date.available","2018-11-07T11:14:58Z"],["dc.date.issued","2008"],["dc.description.abstract","We studied Polylepis forests along an elevational transect between 3,650 and 4,050 m a.s.l. at the treeline of the moist eastern cordillera in Bolivia to examine changes in above- and below-ground stand structure, leaf and root morphology, and regeneration in relation to stand microclimate. Field measurements and model predictions indicated relatively cold growth conditions of the Polylepis forests. Tree height, stem diameter, and basal area of the stands decreased markedly while stem density increased with elevation. Leaf morphology differed between the two occurring Polylepis species, and trees at the treeline had smaller leaves with higher specific leaf area. In contrast, fine root biomass increased from 37 g m(-2) at the lowermost stand to 234 g m(-2) at the treeline. Trees of the uppermost stand had higher specific root surface area and a much higher number of root tips per unit dry mass. Thus, root surface area and total number of root tips per unit ground area increased conspicuously from the lowermost stand to the treeline. Density of young growth inside the forest increased towards the treeline, while density in the open grassland decreased with elevation. Young growth originated from sexual reproduction at the lower forest but was comprised exclusively of root suckers at the treeline stand. We conclude that both the marked change in carbon allocation towards the root system, as well as the changes in root morphology with elevation indicate an adaptation to reduced nutrient supply under cold conditions of these Polylepis stands at the treeline in E Bolivia."],["dc.identifier.doi","10.1007/s00468-007-0185-4"],["dc.identifier.isi","000255630000004"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?goescholar/3545"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/54263"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","0931-1890"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Tropical moist Polylepis stands at the treeline in East Bolivia: the effect of elevation on stand microclimate, above- and below-ground structure, and regeneration"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","1233"],["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.journal","Frontiers in Plant Science"],["dc.bibliographiccitation.lastpage","13"],["dc.bibliographiccitation.volume","7"],["dc.contributor.author","Kubisch, Petra"],["dc.contributor.author","Hertel, Dietrich"],["dc.contributor.author","Leuschner, Christoph"],["dc.date.accessioned","2017-11-28T10:03:37Z"],["dc.date.available","2017-11-28T10:03:37Z"],["dc.date.issued","2016"],["dc.description.abstract","Advancing our understanding of tree fine root dynamics is of high importance for tree physiology and forest biogeochemistry. In temperate broad-leaved forests, ectomycorrhizal (EM) and arbuscular mycorrhizal (AM) tree species often are coexisting. It is not known whether EM and AM trees differ systematically in fine root dynamics and belowground resource foraging strategies. We measured fine root productivity (FRP) and fine root turnover (and its inverse, root longevity) of three EM and three AM broad-leaved tree species in a natural cool-temperate mixed forest using ingrowth cores and combined the productivity data with data on root biomass per root orders. FRP and root turnover were related to root morphological traits and aboveground productivity. FRP differed up to twofold among the six coexisting species with larger species differences in lower horizons than in the topsoil. Root turnover varied up to fivefold among the species with lowest values in Acer pseudoplatanus and highest in its congener Acer platanoides. Variation in root turnover was larger within the two groups than between EM and AM species. We conclude that the main determinant of FRP and turnover in this mixed forest is species identity, while the influence of mycorrhiza type seems to be less important."],["dc.description.sponsorship","Open-Access-Publikationsfonds 2016"],["dc.identifier.doi","10.3389/fpls.2016.01233"],["dc.identifier.fs","622658"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/13691"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/10619"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","final"],["dc.relation.eissn","1664-462X"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","Fine Root Productivity and Turnover of Ectomycorrhizal and Arbuscular Mycorrhizal Tree Species in a Temperate Broad-Leaved Mixed Forest"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","unknown"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","99"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Oecologia"],["dc.bibliographiccitation.lastpage","111"],["dc.bibliographiccitation.volume","161"],["dc.contributor.author","Meinen, Catharina"],["dc.contributor.author","Hertel, Dietrich"],["dc.contributor.author","Leuschner, Christoph"],["dc.date.accessioned","2018-11-07T08:27:30Z"],["dc.date.available","2018-11-07T08:27:30Z"],["dc.date.issued","2009"],["dc.description.abstract","Biodiversity effects on ecosystem functioning in forests have only recently attracted increasing attention. The vast majority of studies in forests have focused on above-ground responses to differences in tree species diversity, while systematic analyses of the effects of biodiversity on root systems are virtually non-existent. By investigating the fine root systems in 12 temperate deciduous forest stands in Central Europe, we tested the hypotheses that (1) stand fine root biomass increases with tree diversity, and (2) 'below-ground overyielding' of species-rich stands in terms of fine root biomass is the consequence of spatial niche segregation of the roots of different species. The selected stands represent a gradient in tree species diversity on similar bedrock from almost pure beech forests to medium-diverse forests built by beech, ash, and lime, and highly-diverse stands dominated by beech, ash, lime, maple, and hornbeam. We investigated fine root biomass and necromass at 24 profiles per stand and analyzed species differences in fine root morphology by microscopic analysis. Fine root biomass ranged from 440 to 480 g m(-2) in the species-poor to species-rich stands, with 63-77% being concentrated in the upper 20 cm of the soil. In contradiction to our two hypotheses, the differences in tree species diversity affected neither stand fine root biomass nor vertical root distribution patterns. Fine root morphology showed marked distinctions between species, but these root morphological differences did not lead to significant differences in fine root surface area or root tip number on a stand area basis. Moreover, differences in species composition of the stands did not alter fine root morphology of the species. We conclude that 'below-ground overyielding' in terms of fine root biomass does not occur in the species-rich stands, which is most likely caused by the absence of significant spatial segregation of the root systems of these late-successional species."],["dc.description.sponsorship","German Research Foundation (DGF); Research Training Group"],["dc.identifier.doi","10.1007/s00442-009-1352-7"],["dc.identifier.isi","000267345500010"],["dc.identifier.pmid","19415337"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?goescholar/3543"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/16217"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.issn","0029-8549"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Biomass and morphology of fine roots in temperate broad-leaved forests differing in tree species diversity: is there evidence of below-ground overyielding?"],["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","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"]]