Bioenergie im globalen Energiesystem Möglichkeiten und Grenzen

Biomass as a source of energy becomes more and more important world wide. At the same time the demand for food and fodder as well as for renewable raw material is increasing significantly. On this background the goal of this paper is it to discuss based on a presentation of the world wide energy system the potentials of an energy provision from biomass and to discuss these potentials within the context of the dimensions of the global energy system. Based on these data statements are made under which circumstances the contribution of biomass within the energy system can be increased.     

Governing the commons: future directions for the Ostrom Project

Now, when longitudinal data are available or soon will be, it is important to carefully consider research strategies for the second phase of the Ostrom Project. I recommend a problem oriented approach aimed at answering questions and solving puzzles that have emerged in the last 25–30 years and a focus on the political dimensions of the commons. Reading Lin’s paper in this issue, I found her proposal valuable but too narrow. I suggest that the longitudinal phase of the Project should deal explicitly with institutions and mechanisms for solving conflicts among local participants over how to divide the costs and benefits of using common resources. I offer, as an illustration, a number of research questions that emphasize institutions in the policy and constitutional spheres rather than in the operational one.     

Bioenergie – Beitrag zum heutigen und zukünftigen Energiesystem

The introduction and establishment of renewable energies is still discussed intensively with the focus on climate-neutral coverage of the global energy demand. In this regard it is a valid option to use biomass as a feedstock. Already today biomass contributes significantly to cover the energy demand in the global energy system. Therefore, the present and future global bioenergy potentials are investigated in the following and compared to the respective biomass use. The results show, amongst others, that the share of biomass for heat, electricity and fuel production will increase worldwide until 2030, although the availability of biomass for energy production is likely to decline in the future.