Moser, Gerald

[["dc.bibliographiccitation.firstpage","1173"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Agroforestry Systems"],["dc.bibliographiccitation.lastpage","1187"],["dc.bibliographiccitation.volume","87"],["dc.contributor.author","Leuschner, Christoph"],["dc.contributor.author","Moser, Gerald"],["dc.contributor.author","Hertel, Dietrich"],["dc.contributor.author","Erasmi, Stefan"],["dc.contributor.author","Leitner, Daniela"],["dc.contributor.author","Culmsee, Heike"],["dc.contributor.author","Schuldt, Bernhard"],["dc.contributor.author","Schwendenmann, Luitgard"],["dc.date.accessioned","2018-08-10T14:37:12Z"],["dc.date.accessioned","2020-05-11T13:21:03Z"],["dc.date.available","2018-08-10T14:37:12Z"],["dc.date.available","2020-05-11T13:21:03Z"],["dc.date.issued","2013"],["dc.description.abstract","Tropical forests store a large part of the terrestrial carbon and play a key role in the global carbon (C) cycle. In parts of Southeast Asia, conversion of natural forest to cacao agroforestry systems is an important driver of deforestation, resulting in C losses from biomass and soil to the atmosphere. This case study from Sulawesi, Indonesia, compares natural forest with nearby shaded cacao agroforests for all major above and belowground biomass C pools (n = 6 plots) and net primary production (n = 3 plots). Total biomass (above- and belowground to 250 cm soil depth) in the forest (approx. 150 Mg C ha−1) was more than eight times higher than in the agroforest (19 Mg C ha−1). Total net primary production (NPP, above- and belowground) was larger in the forest than in the agroforest (approx. 29 vs. 20 Mg dry matter (DM) ha−1 year−1), while wood increment was twice as high in the forest (approx. 6 vs. 3 Mg DM ha−1 year−1). The SOC pools to 250 cm depth amounted to 134 and 78 Mg C ha−1 in the forest and agroforest stands, respectively. Replacement of tropical moist forest by cacao agroforest reduces the biomass C pool by approximately 130 Mg C ha−1; another 50 Mg C ha−1 may be released from the soil. Further, the replacement of forest by cacao agroforest also results in a 70–80 % decrease of the annual C sequestration potential due to a significantly smaller stem increment."],["dc.identifier.doi","10.1007/s10457-013-9628-7"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/65035"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation.eissn","1572-9680"],["dc.relation.issn","0167-4366"],["dc.title","Conversion of tropical moist forest into cacao agroforest: consequences for carbon pools and annual C sequestration"],["dc.title.subtitle","consequences for carbon pools and annual C sequestration"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["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","219"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Basic and Applied Ecology"],["dc.bibliographiccitation.lastpage","230"],["dc.bibliographiccitation.volume","8"],["dc.contributor.author","Leuschner, Christoph"],["dc.contributor.author","Moser, Gerald"],["dc.contributor.author","Bertsch, Christian"],["dc.contributor.author","Roederstein, Marina"],["dc.contributor.author","Hertel, Dietrich"],["dc.date.accessioned","2018-11-07T11:06:04Z"],["dc.date.available","2018-11-07T11:06:04Z"],["dc.date.issued","2007"],["dc.description.abstract","Tropical rain forests decrease in tree height and aboveground biomass (AGB) with increasing elevation. The causes of this phenomenon remain insufficiently understood despite a number of explanations proposed including direct or indirect effects of low temperature on carbon acquisition and carbon investment, adverse soil conditions and impaired nutrient supply. For analysing altitudinal patterns of aboveground/belowground carbon partitioning, we measured fine (<2mm in diameter) and coarse root (2-5mm) biomass and necromass and leaf area index (LAI), and estimated AGB, from stand structural parameters in five tropical mountain rain forests at 1050, 1540, 1890, 2380 and 3060 m along an altitudinal transect in the South Ecuadorian Andes. Average tree height and AGB were reduced to less than 50% between 1050 and 3060 m, LAI decreased from 5.1 to 2.9. The leaf area reduction must have resulted in a lowered canopy carbon gain and thus may partly explain the reduced tree growth in the high-elevation stands. In contrast, both fine and coarse root biomass significantly increased with elevation across this transect. The ratio of root biomass (fine and coarse) to AGB increased more than ten-fold from 0.04 at 1050 m to 0.43 at 3060 m. Under the assumption that fine root biomass does reflect root productivity, our data indicate a marked belowground shift in C allocation with increasing elevation. Possible explanations for this allocation shift are discussed including reduced N supply due to low temperatures, water logging or adverse soil chemical. conditions. We conclude that the fine root system and its activity may hold the key for understanding the impressive reduction in tree size along tropical mountain slopes in Ecuador. Analyses of fine root turnover and longevity in relation to environmental factors along altitudinal transects in tropical mountains are urgently needed. (C) 2006 Gesellschaft fur Okologie. Published by Elsevier GnnbH. All rights reserved."],["dc.identifier.doi","10.1016/j.baae.2006.02.004"],["dc.identifier.isi","000246259500003"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/52216"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Gmbh, Urban & Fischer Verlag"],["dc.relation.issn","1439-1791"],["dc.title","Large altitudinal increase in tree root/shoot ratio in tropical mountain forests of Ecuador"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","PII 926393782"],["dc.bibliographiccitation.firstpage","151"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Plant Ecology & Diversity"],["dc.bibliographiccitation.lastpage","164"],["dc.bibliographiccitation.volume","3"],["dc.contributor.author","Moser, Gerald"],["dc.contributor.author","Leuschner, Christoph"],["dc.contributor.author","Roederstein, Marina"],["dc.contributor.author","Graefe, Sophie"],["dc.contributor.author","Soethe, Nathalie"],["dc.contributor.author","Hertel, Dietrich"],["dc.date.accessioned","2018-11-07T08:48:28Z"],["dc.date.available","2018-11-07T08:48:28Z"],["dc.date.issued","2010"],["dc.description.abstract","Background: Data on below-ground production of tropical montane forests along elevation gradients are scarce. Aims: To determine fine, coarse and large root biomass and productivity along a 2000m elevation transect. Methods: In five south Ecuadorian mountain forests along a transect from 1000 to 3000m above sea level, fine ( 2 mm diameter), coarse (2-50 mm) and large root biomass ( 50 mm) were analysed by soil coring and excavation of soil pits. Fine root production was estimated synchronously by three different approaches (sequential soil coring, the ingrowth core method, and the mini-rhizotron technique). Coarse and large root production was estimated by recording diameter increment using dendrometer tapes. Results: Fine root biomass increased four-fold between 1000 and 3000 m; coarse and large root biomass doubled. The three approaches for estimating fine root production yielded highly divergent results, with the mini-rhizotron approach giving the most reliable data, and indicating a significant increase in fine root production with elevation. Conclusions: Our results indicate a marked carbon allocation shift from above- to below-ground towards higher elevations, which is probably a consequence of increasing nutrient limitation of tree growth with increasing elevation."],["dc.description.sponsorship","German Science Foundation (DFG)"],["dc.identifier.doi","10.1080/17550874.2010.517788"],["dc.identifier.isi","000284632400006"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/21218"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Taylor & Francis Ltd"],["dc.relation.issn","1755-0874"],["dc.title","Biomass and productivity of fine and coarse roots in five tropical mountain forests stands along an altitudinal transect in southern Ecuador"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","183"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Perspectives in Plant Ecology, Evolution and Systematics"],["dc.bibliographiccitation.lastpage","191"],["dc.bibliographiccitation.volume","12"],["dc.contributor.author","Groeneveld, Janna H."],["dc.contributor.author","Tscharntke, Teja"],["dc.contributor.author","Moser, Gerald"],["dc.contributor.author","Clough, Yann"],["dc.date.accessioned","2017-09-07T11:50:45Z"],["dc.date.available","2017-09-07T11:50:45Z"],["dc.date.issued","2010"],["dc.identifier.doi","10.1016/j.ppees.2010.02.005"],["dc.identifier.gro","3149897"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/6606"],["dc.language.iso","en"],["dc.notes.status","zu prüfen"],["dc.relation.issn","1433-8319"],["dc.title","Experimental evidence for stronger cacao yield limitation by pollination than by plant resources"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1481"],["dc.bibliographiccitation.journal","Global Change Biology"],["dc.bibliographiccitation.lastpage","1491"],["dc.bibliographiccitation.volume","20"],["dc.contributor.author","Moser, Gerald"],["dc.contributor.author","Schuldt, Bernhard"],["dc.contributor.author","Hertel, Dietrich"],["dc.contributor.author","Horna, Viviana"],["dc.contributor.author","Barus, Henry"],["dc.contributor.author","Leuschner, Christoph"],["dc.date.accessioned","2018-08-01T14:12:07Z"],["dc.date.available","2018-08-01T14:12:07Z"],["dc.date.issued","2014"],["dc.description.abstract","Climate change scenarios predict increases in the frequency and duration of ENSO-related droughts for parts of South-East Asia until the end of this century exposing the remaining rainforests to increasing drought risk. A pan-tropical review of recorded drought-related tree mortalities in more than 100 monitoring plots before, during and after drought events suggested a higher drought-vulnerability of trees in South-East Asian than in Amazonian forests. Here, we present the results of a replicated (n=3 plots) throughfall exclusion experiment in a perhumid tropical rainforest in Sulawesi, Indonesia. In this first large-scale roof experiment outside semihumid eastern Amazonia, 60% of the throughfall was displaced during the first 8months and 80% during the subsequent 17months, exposing the forest to severe soil desiccation for about 17months. In the experiment's second year, wood production decreased on average by 40% with largely different responses of the tree families (ranging from -100 to +100% change). Most sensitive were trees with high radial growth rates under moist conditions. In contrast, tree height was only a secondary factor and wood specific gravity had no influence on growth sensitivity. Fine root biomass was reduced by 35% after 25months of soil desiccation while fine root necromass increased by 250% indicating elevated fine root mortality. Cumulative aboveground litter production was not significantly reduced in this period. The trees from this Indonesian perhumid rainforest revealed similar responses of wood and litter production and root dynamics as those in two semihumid Amazonian forests subjected to experimental drought. We conclude that trees from paleo- or neotropical forests growing in semihumid or perhumid climates may not differ systematically in their growth sensitivity and vitality under sublethal drought stress. Drought vulnerability may depend more on stem cambial activity in moist periods than on tree height or wood specific gravity."],["dc.identifier.doi","10.1111/gcb.12424"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/15226"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.title","Replicated throughfall exclusion experiment in an Indonesian perhumid rainforest"],["dc.title.subtitle","Wood production, litter fall and fine root growth under simulated drought"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.journal","Frontiers in Forests and Global Change"],["dc.bibliographiccitation.volume","3"],["dc.contributor.affiliation","Kotowska, Martyna M.; 1Plant Ecology and Ecosystems Research, Albrecht von Haller Institute for Plant Sciences, University of Goettingen, Göttingen, Germany"],["dc.contributor.affiliation","Link, Roman M.; 1Plant Ecology and Ecosystems Research, Albrecht von Haller Institute for Plant Sciences, University of Goettingen, Göttingen, Germany"],["dc.contributor.affiliation","Röll, Alexander; 3Tropical Silviculture and Forest Ecology, University of Goettingen, Göttingen, Germany"],["dc.contributor.affiliation","Hertel, Dietrich; 1Plant Ecology and Ecosystems Research, Albrecht von Haller Institute for Plant Sciences, University of Goettingen, Göttingen, Germany"],["dc.contributor.affiliation","Hölscher, Dirk; 3Tropical Silviculture and Forest Ecology, University of Goettingen, Göttingen, Germany"],["dc.contributor.affiliation","Waite, Pierre-André; 1Plant Ecology and Ecosystems Research, Albrecht von Haller Institute for Plant Sciences, University of Goettingen, Göttingen, Germany"],["dc.contributor.affiliation","Moser, Gerald; 4Plant Ecology, Justus Liebig University of Giessen, Giessen, Germany"],["dc.contributor.affiliation","Tjoa, Aiyen; 5Department of Agrotechnology, Faculty of Agricultural Sciences, Tadulako University, Palu, Indonesia"],["dc.contributor.affiliation","Leuschner, Christoph; 1Plant Ecology and Ecosystems Research, Albrecht von Haller Institute for Plant Sciences, University of Goettingen, Göttingen, Germany"],["dc.contributor.affiliation","Schuldt, Bernhard; 1Plant Ecology and Ecosystems Research, Albrecht von Haller Institute for Plant Sciences, University of Goettingen, Göttingen, Germany"],["dc.contributor.author","Kotowska, Martyna M."],["dc.contributor.author","Link, Roman M."],["dc.contributor.author","Röll, Alexander"],["dc.contributor.author","Hertel, Dietrich"],["dc.contributor.author","Hölscher, Dirk"],["dc.contributor.author","Waite, Pierre-André"],["dc.contributor.author","Moser, Gerald"],["dc.contributor.author","Tjoa, Aiyen"],["dc.contributor.author","Leuschner, Christoph"],["dc.contributor.author","Schuldt, Bernhard"],["dc.date.accessioned","2021-05-17T16:13:19Z"],["dc.date.accessioned","2021-10-27T13:11:43Z"],["dc.date.available","2021-05-17T16:13:19Z"],["dc.date.available","2021-10-27T13:11:43Z"],["dc.date.issued","2021"],["dc.date.updated","2022-09-06T14:25:58Z"],["dc.description.abstract","The efficiency of the water transport system in trees sets physical limits to their productivity and water use. Although the coordination of carbon assimilation and hydraulic functions has long been documented, the mutual inter-relationships between wood anatomy, water use and productivity have not yet been jointly addressed in comprehensive field studies. Based on observational data from 99 Indonesian rainforest tree species from 37 families across 22 plots, we analyzed how wood anatomy and sap flux density relate to tree size and wood density, and tested their combined influence on aboveground biomass increment (ABI) and daily water use (DWU). Results from pairwise correlations were compared to the outcome of a structural equation model (SEM). Across species, we found a strong positive correlation between ABI and DWU. Wood hydraulic anatomy was more closely related to these indicators of plant performance than wood density. According to the SEM, the common effect of average tree size and sap flux density on the average stem increment and water use of a species was sufficient to fully explain the observed correlation between these variables. Notably, after controlling for average size, only a relatively small indirect effect of wood properties on stem increment and water use remained that was mediated by sap flux density, which was significantly higher for species with lighter and hydraulically more efficient wood. We conclude that wood hydraulic traits are mechanistically linked to water use and productivity via their influence on sap flow, but large parts of these commonly observed positive relationships can be attributed to confounding size effects."],["dc.description.sponsorship","Open-Access-Publikation 2020"],["dc.identifier.doi","10.3389/ffgc.2020.598759"],["dc.identifier.doi","10.3389/ffgc.2020.598759.s001"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/17787"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/91618"],["dc.language.iso","en"],["dc.notes.intern","Migrated from goescholar"],["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 | B | B04: Pflanzenproduktivität und Ressourcenaufteilung im Wurzelraum entlang von Gradienten tropischer Landnutzungsintensität und Baumartenvielfalt"],["dc.relation.eissn","2624-893X"],["dc.relation.orgunit","Fakultät für Biologie und Psychologie"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.subject.ddc","570"],["dc.subject.gro","sfb990_journalarticles"],["dc.title","Effects of wood hydraulic properties on water use and productivity of tropical rainforest trees"],["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","996"],["dc.bibliographiccitation.issue","12"],["dc.bibliographiccitation.journal","Mammalian Genome"],["dc.bibliographiccitation.lastpage","1006"],["dc.bibliographiccitation.volume","15"],["dc.contributor.author","Chen, K. F."],["dc.contributor.author","Knorr, C."],["dc.contributor.author","Moser, Gerald"],["dc.contributor.author","Gatphayak, Kesinee"],["dc.contributor.author","Brenig, Bertram"],["dc.date.accessioned","2018-11-07T10:43:32Z"],["dc.date.available","2018-11-07T10:43:32Z"],["dc.date.issued","2004"],["dc.description.abstract","We have isolated and characterized the porcine testis-specific phosphoglycerate kinase 2 (PGK2) gene, and 1665 bp of full-length PGK2 cDNA were also compiled using modified rapid amplification 5'-RACE and 3-RACE information. The results of genomic and cDNA sequences of the porcine PGK2 gene demonstrated that it is a single-exon intronless gene with a complete open reading frame of 1251 bp encoding a PGK protein of 417 amino acids. Realtime quantitative PCR results showed that PGK2 mRNA was solely expressed in the testis. There was a lower amount of PGK2 expression in the testis of a 10-month-old herniated boar and a very small amount of PGK2 expression in the testis of an 8-week-old cryptorchid piglet compared to an adult boar. Two SNPs in the PGK2 gene (SNP-A: T427C; SNP-B: C914A) resulting in amino acid substitutions (SNP-A: Ser(102)-Pro(102); SNP-B: Thr(264)-Lys(264)) were detected and genotyped among six pig breeds. The nucleotide C at SNP-A responsible for the amino acid exchange to proline could lead to the loss of a casein kinase II (CK2) phosphorylation site in the PGK2 peptide. Association analyses between PGK2 genotypes and several traits of sperm quantity and quality were performed. The results showed that SNP-B has a positive significant effect on semen volume in the breed Pietrain (p = 0.08), i.e., boars carrying genotype CC revealed an increased volume of 49 ml compared with boars having the genotype AA."],["dc.identifier.doi","10.1007/s00335-004-2405-1"],["dc.identifier.isi","000225371100007"],["dc.identifier.pmid","15599558"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/47077"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","0938-8990"],["dc.title","Molecular characterization of the porcine testis-specific phosphoglycerate kinase 2 (PGK2) gene and its association with male fertility"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","2211"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","Global Change Biology"],["dc.bibliographiccitation.lastpage","2226"],["dc.bibliographiccitation.volume","17"],["dc.contributor.author","Moser, Gerald"],["dc.contributor.author","Leuschner, Christoph"],["dc.contributor.author","Hertel, Dietrich"],["dc.contributor.author","Graefe, Sophie"],["dc.contributor.author","Soethe, Nathalie"],["dc.contributor.author","Iost, Susanne"],["dc.date.accessioned","2018-11-07T08:55:56Z"],["dc.date.available","2018-11-07T08:55:56Z"],["dc.date.issued","2011"],["dc.description.abstract","Carbon storage and sequestration in tropical mountain forests and their dependence on elevation and temperature are not well understood. In an altitudinal transect study in the South Ecuadorian Andes, we tested the hypotheses that (i) aboveground net primary production (ANPP) decreases continuously with elevation due to decreasing temperatures, whereas (ii) belowground productivity (BNPP) remains constant or even increases with elevation due to a shift from light to nutrient limitation of tree growth. In five tropical mountain forests between 1050 and 3060 m a.s.l., we investigated all major above- and belowground biomass and productivity components, and the stocks of soil organic carbon (SOC). Leaf biomass, stemwood mass and total aboveground biomass (AGB) decreased by 50% to 70%, ANPP by about 70% between 1050 and 3060 m, while stem wood production decreased 20-fold. Coarse and large root biomass increased slightly, fine root biomass fourfold, while fine root production (minirhizotron study) roughly doubled between 1050 and 3060 m. The total tree biomass (above- and belowground) decreased from about 320 to 175 Mg dry mass ha-1, total NPP from ca. 13.0 to 8.2 Mg ha-1 yr-1. The belowground/aboveground ratio of biomass and productivity increased with elevation indicating a shift from light to nutrient limitation of tree growth. We propose that, with increasing elevation, an increasing nitrogen limitation combined with decreasing temperatures causes a large reduction in stand leaf area resulting in a substantial reduction of canopy carbon gain toward the alpine tree line. We conclude that the marked decrease in tree height, AGB and ANPP with elevation in these mountain forests is caused by both a belowground shift of C allocation and a reduction in C source strength, while a temperature-induced reduction in C sink strength (lowered meristematic activity) seems to be of secondary importance."],["dc.description.sponsorship","Deutsche Forschungsgemeinschaft (DFG) [402]"],["dc.identifier.doi","10.1111/j.1365-2486.2010.02367.x"],["dc.identifier.isi","000289641400016"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/23028"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-blackwell"],["dc.relation.issn","1354-1013"],["dc.title","Elevation effects on the carbon budget of tropical mountain forests (S Ecuador): the role of the belowground compartment"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","2179"],["dc.bibliographiccitation.issue","8"],["dc.bibliographiccitation.journal","BIOGEOSCIENCES"],["dc.bibliographiccitation.lastpage","2194"],["dc.bibliographiccitation.volume","8"],["dc.contributor.author","Schuldt, Bernhard"],["dc.contributor.author","Leuschner, C."],["dc.contributor.author","Horna, Viviana"],["dc.contributor.author","Moser, Gerald"],["dc.contributor.author","Koehler, M."],["dc.contributor.author","van Straaten, Oliver"],["dc.contributor.author","Barus, Henry"],["dc.date.accessioned","2018-11-07T09:00:20Z"],["dc.date.available","2018-11-07T09:00:20Z"],["dc.date.issued","2011"],["dc.description.abstract","A large-scale replicated throughfall exclusion experiment was conducted in a pre-montane perhumid rainforest in Sulawesi (Indonesia) exposing the trees for two years to pronounced soil desiccation. The lack of regularly occurring dry periods and shallow rooting patterns distinguish this experiment from similar experiments conducted in the Amazonian rainforest. We tested the hypotheses that a tree's sun canopy is more affected by soil drought than its shade crown, making tall trees particularly vulnerable even under a perhumid climate, and that extended drought periods stimulate an acclimation in the hydraulic system of the sun canopy. In the abundant and tall tree species Castanopsis acuminatissima (Fagaceae), we compared 31 morphological, anatomical, hydraulic and chemical variables of leaves, branches and the stem together with stem diameter growth between drought and control plots. There was no evidence of canopy dieback. However, the drought treatment led to a 30% reduction in sapwood-specific hydraulic conductivity of sun canopy branches, possibly caused by the formation of smaller vessels and/or vessel filling by tyloses. Drought caused an increase in leaf size, but a decrease in leaf number, and a reduction in foliar calcium content. The delta C-13 and delta O-18 signatures of sun canopy leaves gave no indication of a permanent down-regulation of stomatal conductance during the drought, indicating that presenescent leaf shedding may have improved the water status of the remaining leaves. Annual stem diameter growth decreased during the drought, while the density of wood in the recently produced xylem increased in both the stem and sun canopy branches (marginally significant). The sun canopy showed a more pronounced drought response than the shade crown indicating that tall trees with a large sun canopy are more vulnerable to drought stress. We conclude that the extended drought prompted a number of medium-to long-term responses in the leaves, branches and the trunk, which may have reduced drought susceptibility. However, unlike a natural drought, our drought simulation experiment was carried out under conditions of high humidity, which may have dampened drought induced damages."],["dc.description.sponsorship","German Science Foundation [SFB 552]"],["dc.identifier.doi","10.5194/bg-8-2179-2011"],["dc.identifier.isi","000294457100012"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/8422"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/24130"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Copernicus Gesellschaft Mbh"],["dc.relation.issn","1726-4170"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Change in hydraulic properties and leaf traits in a tall rainforest tree species subjected to long-term throughfall exclusion in the perhumid tropics"],["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"]]