TY  - JOUR
A1  - Popp, Alexander
A1  - Domptail, Stephanie
A1  - Blaum, Niels
A1  - Jeltsch, Florian
T1  - Landuse experience does not qualify for adaptation to climate change
N2  - The need to implement sustainable resource management regimes for semi-arid and arid rangelands is acute as non- adapted grazing strategies lead to irreversible environmental problems such as desertification and associated loss of economic support to society. In these sensitive ecosystems, traditional sectoral, disciplinary approaches will not work to attain sustainability: achieving a collective vision of how to attain sustainability requires interactive efforts among disciplines in a more integrated approach. Therefore, we developed an integrated ecological-economic approach that consists of an ecological and an economic module and combines relevant processes on either level. Parameters for both modules are adjusted for an arid dwarf shrub savannah in southern Namibia. The economic module is used to analyse decisions of different virtual farmer types on annual stocking rates depending on their knowledge how the ecosystem works and climatic conditions. We used a dynamic linear optimisation model to simulate farm economics and livestock dynamics. The ecological module is used to simulate the impact of the farmers' land-use decision, derived by the economic module, on ecosystem dynamics and resulting carrying capacity of the system for livestock. Vegetation dynamics, based on the concept of State-and-transition models, and forage productivity for both modules is derived by a small- scale and spatially explicit vegetation model. This mechanistic approach guarantees that data collected and processes estimated at smaller scales are included in our application. Simulation results of the ecological module were successfully compared to simulation results of the optimisation model for a time series of 30 years. We revealed that sustainable management of semi-arid and arid rangelands relies strongly on rangeland managers' understanding of ecological processes. Furthermore, our simulation results demonstrate that the projected lower annual rainfall due to climate change adds an additional layer of risk to these ecosystems that are already prone to land degradation.
Y1  - 2009
UR  - http://www.sciencedirect.com/science/journal/03043800
U6  - https://doi.org/10.1016/j.ecolmodel.2008.11.015
SN  - 0304-3800
ER  - 
TY  - CHAP
A1  - Popp, Alexander
A1  - Blaum, Niels
A1  - Domptail, Stephanie
A1  - Herpel, Nicole
A1  - Gröngröft, Alexander
A1  - Hoffman, T. T.
A1  - Jürgens, Norbert
A1  - Milton, Sue
A1  - Nuppenau, Ernst-August
A1  - Rossmanith, Eva
A1  - Schmidt, Michael
A1  - Vogel, Melanie
A1  - Vohland, Katrin
A1  - Jeltsch, Florian
T1  - From satellite imagery to soil-plant interactions
BT  - integrating disciplines and scales in process based simulation models
N2  - Decisions for the conservation of biodiversity and sustainable management of natural resources are typically related to large scales, i.e. the landscape level. However, understanding and predicting the effects of land use and climate change on scales relevant for decision-making requires to include both, large scale vegetation dynamics and small scale processes, such as soil-plant interactions. Integrating the results of multiple BIOTA subprojects enabled us to include necessary data of soil science, botany, socio-economics and remote sensing into a high resolution, process-based and spatially-explicit model. Using an example from a sustainably-used research farm and a communally used and degraded farming area in semiarid southern Namibia we show the power of simulation models as a tool to integrate processes across disciplines and scales.
Y1  - 2006
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-7302
N1  - Interdisziplinäres Zentrum für Musterdynamik und Angewandte Fernerkundung Workshop vom 9. - 10. Februar 2006.

[Poster]
ER  -