Now showing 1 - 3 of 3
  • 2009Journal Article
    [["dc.bibliographiccitation.firstpage","347"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Erdkunde"],["dc.bibliographiccitation.lastpage","364"],["dc.bibliographiccitation.volume","63"],["dc.contributor.author","Dislich, Claudia"],["dc.contributor.author","Guenter, Sven"],["dc.contributor.author","Homeier, Juergen"],["dc.contributor.author","Schroeder, Boris"],["dc.contributor.author","Huth, Andreas"],["dc.date.accessioned","2018-11-07T11:23:30Z"],["dc.date.available","2018-11-07T11:23:30Z"],["dc.date.issued","2009"],["dc.description.abstract","The montane forests of Ecuador are part of one of the world's hotspots of biodiversity and they also suffer the highest deforestation rate amongst South American countries. The processes that drive the dynamics of these highly diverse ecosystems are poorly understood. This is particularly true for transient dynamics, which are crucial for the protection and sustainable management of such forests. Dynamic simulation models, can be used to anal use the growth of forests, but so far they have been applied mostly to temperate forests and to some few tropical lowland forests. In this study we investigate whether a process-based, individual-oriented simulation model like FORMIND is capable of reproducing the dynamics of tropical montane forests. For this purpose develop a parameterisation for the model and validate the model against field observations of different (structural) patterns. We then analyse the predicted succession dynamics. The model is capable of reproducing the structure and dynamics of mature ridge forest on different levels of complexity. The main results indicate that, in terms of relative abundances of different: species groups and stern size distribution in the tree community, our model predicts the observed patterns in the field. Additional field studies and model modifications are required to simulate the succession processes that follow different types of disturbances. FORMIND is a promising tool for the extrapolation of local measurements and for simulating the dynamics of tropical montane forests. Parameterisations of the model for further forest types within the research area are intended. The model has a number of potential applications, ranging from investigating the impact of (different) natural disturbances on forest structure and tree species diversity to analysing-different potential management strategies."],["dc.identifier.doi","10.3112/erdkunde.2009.04.05"],["dc.identifier.isi","000273971900005"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/56212"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Boss Druck Medien Gmbh"],["dc.relation.issn","0014-0015"],["dc.title","SIMULATING FOREST DYNAMICS OF A TROPICAL MONTANE FOREST IN SOUTH ECUADOR"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]
    Details DOI WOS
  • 2015Journal Article Overview
    [["dc.bibliographiccitation.firstpage","138"],["dc.bibliographiccitation.journal","Global Environmental Change"],["dc.bibliographiccitation.lastpage","147"],["dc.bibliographiccitation.volume","35"],["dc.contributor.author","Alexander, Peter"],["dc.contributor.author","Rounsevell, Mark D. A."],["dc.contributor.author","Dislich, Claudia"],["dc.contributor.author","Dodson, Jennifer R."],["dc.contributor.author","Engstroem, Kerstin"],["dc.contributor.author","Moran, Dominic"],["dc.date.accessioned","2018-11-07T09:49:17Z"],["dc.date.available","2018-11-07T09:49:17Z"],["dc.date.issued","2015"],["dc.description.abstract","The nexus of population growth and changing diets has increased the demands placed on agriculture to supply food for human consumption, animal feed and fuel. Rising incomes lead to dietary changes, from staple crops, towards commodities with greater land requirements, e.g. meat and dairy products. Despite yield improvements partially offsetting increases in demand, agricultural land has still been expanding, causing potential harm to ecosystems, e.g. through deforestation. We use country-level panel data (1961-2011) to allocate the land areas used to produce food for human consumption, waste and biofuels, and to attribute the food production area changes to diet, population and yields drivers. The results show that the production of animal products dominates agricultural land use and land use change over the 50-year period, accounting for 65% of land use change. The rate of extensification of animal production was found to have reduced more recently, principally due to the smaller effect of population growth. The area used for bioenergy was shown to be relatively small, but formed a substantial contribution (36%) to net agricultural expansion in the most recent period. Nevertheless, in comparison to dietary shifts in animal products, bioenergy accounted for less than a tenth of the increase in demand for agricultural land. Population expansion has been the largest driver for agricultural land use change, but dietary changes are a significant and growing driver. China was a notable exception, where dietary transitions dominate food consumption changes, due to rapidly rising incomes. This suggests that future dietary changes will become the principal driver for land use change, pointing to the potential need for demand-side measures to regulate agricultural expansion. (C) 2015 Elsevier Ltd. All rights reserved."],["dc.identifier.doi","10.1016/j.gloenvcha.2015.08.011"],["dc.identifier.isi","000366767100014"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/35474"],["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 | B10: Landschaftsbezogene Bewertung der ökologischen und sozioökonomischen Funktionen von Regenwald- Transformationssystemen in Sumatra (Indonesien)"],["dc.relation.issn","1872-9495"],["dc.relation.issn","0959-3780"],["dc.relation.orgunit","Abteilung Ökosystemmodellierung"],["dc.subject.gro","Dietary patterns"],["dc.subject.gro","Food security"],["dc.subject.gro","Land displacement"],["dc.subject.gro","Land use"],["dc.subject.gro","sfb990_reviews"],["dc.title","Drivers for global agricultural land use change: The nexus of diet, population, yield and bioenergy"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","overview_ja"],["dspace.entity.type","Publication"]]
    Details DOI WOS
  • 2016Journal Article Research Paper
    [["dc.bibliographiccitation.firstpage","4"],["dc.bibliographiccitation.journal","Sustainability of Water Quality and Ecology"],["dc.bibliographiccitation.lastpage","13"],["dc.bibliographiccitation.volume","8"],["dc.contributor.author","Tarigan, Suria Darma"],["dc.contributor.author","Wiegand, Kerstin"],["dc.contributor.author","Dislich, Claudia"],["dc.contributor.author","Slamet, Bejo"],["dc.contributor.author","Heinonen, Johannes"],["dc.contributor.author","Meyer, Katrin Mareike"],["dc.date.accessioned","2017-09-07T11:52:21Z"],["dc.date.available","2017-09-07T11:52:21Z"],["dc.date.issued","2016"],["dc.description.abstract","The impact of continuing rainforest transformation on hydrological functioning and other ecosystem functions in South East Asia remains uncertain. The vast majority of the local residents in our study area believe that the expansion of oil palm reduced the flow regulation function of a watershed causing more frequent flooding in the rainy season and water scarcity problems during the dry season. The research aimed to characterize surface runoff as an indicator of water flow regulation and simulate effectiveness of different mitigation options for surface runoff management in a watershed with rapid expansion of oil palm plantations. Our study started with plot experiments to characterize surface runoff used to adapt curve number (CN) values of the different land-use types required for SWAT modeling. Further, we carried out small watershed experiments to adapt the CN values of different mitigation options. The SWAT model performance was in satisfactory agreement with the Nash–Sutcliff efficiency values of 0.88 and 0.82 for calibration and validation, respectively. After successful model calibration and validation, we simulated the effectiveness of the following mitigation options: (a) frond pile management, and (b) frond pile management and silt pit treatment with a density of 20 units per ha. Both options were chosen for their simple construction enhancing their adoption and sustainable application. Frond pile management and the combination of frond pile and silt pit treatment reduced total surface runoff in a watershed scale from 151 mm to 141 mm (10{\\%}) and from 151 mm to 109 mm (31{\\%}), respectively. The mitigation options which were evaluated in this study were ecologically effective in regulating water flow through reduction of surface runoff. They were also economically viable, because the mitigation options increased the availability of water which can increase oil palm production while the implementation costs are low due to the simple design using frond leaves residues abundantly available onsite. Due to the fulfillment of at least two sustainability pillars, these mitigation options should be adopted as one evaluation criterion in the certification process carried out by Indonesian certification body for sustainable palm oil (ISPO). Further research is still needed to study optimal design criteria for mitigation options including their dimension, density and spatial distribution in a watershed."],["dc.identifier.doi","10.1016/j.swaqe.2016.05.001"],["dc.identifier.gro","3148908"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/5546"],["dc.language.iso","en"],["dc.notes.intern","Wiegand Crossref Import"],["dc.notes.status","public"],["dc.notes.submitter","chake"],["dc.relation.issn","2212-6139"],["dc.relation.orgunit","Abteilung Ökosystemmodellierung"],["dc.subject.gro","Expansion of oil palm plantation"],["dc.subject.gro","Mitigation option"],["dc.subject.gro","SWAT model"],["dc.subject.gro","Surface runoff management"],["dc.title","Mitigation options for improving the ecosystem function of water flow regulation in a watershed with rapid expansion of oil palm plantations"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","no"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]
    Details DOI