Abstract The Amazonian clear-water igapós are floodplains mainly covered by forests with intermediate hydrochemical and edaphic conditions between the nutrient-rich várzea along white-water rivers and the oligotrophic igapós along black-water rivers. Earlier studies indicate the potential for management of timber species in the várzea due to the fast tree growth and high forest productivity. Timber resource management, however, is not recommended in the black-water ecosystem because of the general slow tree growth and regenerative capacity. For clear-water igapós, information on the potential for sustainable management of timber resources is lacking. In this context, we aimed at modelling tree growth in diameter, height, and volume to derive estimates for potential management criteria (minimum logging diameter - MLD, felling cycle - FC) for eight timber species in the clear-water igapós of the Branco and Tapajós rivers in the northern and southern section of the Amazon basin, respectively. Growth modeling followed the guidelines of the Growth-Oriented Logging concept with an adaptation of diameter growth adjusted by mixed-effect non-linear regression. The studied tree species had MLDs varying from 36 to 90 cm and FCs ranging from 6 to 21 years, contrasting the established standards in forest legislation (MLD: 50 cm; FC: 25-35 years). As clear-water igapós are among the most threatened ecosystems in the Amazon basin due to different land uses (large-scale deforestation, hydropower generation, mining), we recommend testing the management of commercial tree species at a small scale and integrating in conservation units to stepwise promote the sustainable management of these natural resources by traditional communities to increase their welfare and to conserve the ecosystem.

The goal to address broader societal problems by mission-oriented research and inno-vation policy has brought new demands for the governance and implementation to the forefront and led to a great diversity of missions. By developing a typology for the clas-sification of different types of missions, this working paper can serve as a first step for studying the impact of the missions of the German High-Tech Strategy 2025 (HTS). Combining existing literature on mission-oriented innovation policy with insights from governance structures, we identify four types of missions - two subtypes of transformer and accelerator missions each - and demonstrate that this typology can be successfully applied to the 12 missions of the German HTS 2025. Thereby, we contribute to a more fine-grained understanding of the different demands and challenges inherent to different missions and thus provide the opportunity for a systematic comparison and a reflection on the varying requirements for assessing the impact of mission-oriented policies.

The demand for the public sector to be more involved in transitions towards a more sustainable society has raised questions about what capabilities are needed for Public Sector Organisations (PSOs) to play a part in tackling important societal issues such as climate change. To do this, PSOs need new capabilities at three levels. Firstly, the capability to reflect and assess the complexity of societal issues. Secondly, the capability to collaborate across sectors, as well as with non-state actors, in order to tackle complex problems. Lastly, the capability to gather and analyze different types of data. To assume this active role, PSOs must also cultivate an organisational culture that motivates individuals to engage in addressing these issues. This cultural shift cannot be planned in detail but can be shaped by changes in the formal structures of the PSO. Up to this point, little research has been conducted on the capabilities PSOs require to become change agents. This article offers a model to systematically identify these capabilities so that PSOs can assume an active role in leading transformation processes.

The promise of mission-oriented innovation policies (MOIP) to address some of the grand societal challenges as a cross-sectoral and interdisciplinary approach to innova-tion policy with increased directionality has raised high hopes. However, the complexity attached to MOIP constitutes a challenge, both for policy-makers and innovation schol-ars. Seeking to enhance our understanding of MOIP and the diverse policy choices and challenges involved, we propose a conceptualization of missions as multiple, intercon-nected translation processes that span from a societal challenge as the starting point to impacts as the ultimate translational stage. We argue that adopting a process-oriented perspective is well-suited to account for the interdependencies and complex feedback dynamics among the different stages during the realization of MOIP. The proposed framework aims to support the development of frameworks for impact assessment, but also yields relevant insights for policy-makers implementing MOIP.