SUPERB Demo area – North Rhine Westphalia – SUPERB (forest-restoration.eu) lead Catharina Schmidt introduced the project work on October 30th and 31st in Arnsberg, Germany, to a group of ca. 40 scientists and practitioners from various organisations based in NRW. Aim of the “Forest Research NRW“ event was to discuss the latest scientific results and practical challenges related to how we can better prepare and adapt our forests in times of climate change. The agenda of the symposium included topics such as the opportunities of digitalization in the forest for climate change adaptation, the performance of forest soils, questions of forest governance as well as reflections on how to combine climate protection and timber construction. The event was organized on the initiative of the NRW Ministry of Agriculture and Consumer Protection with the objective to establish a new forest research network in NRW, formally announced by NRW Minister for Agriculture and Consumer Protection Silke Gorißen on October 30th.
The workshop also included an excursion to SUPERB’s demo sites in Arnsberg, where participants learned about ongoing forest restoration measures: reforesting beetle-infected spruce forests into more diverse, mixed-forest ecosystems by using a combination of natural regeneration and replanting.
What is SUPERB? How does our research look like? And why do we talk about a “Prestoration” approach? Recently, Catharina Schmidt, leader of SUPERB’s NRW demo, and Simon Fleckenstein, PhD student from University of Freiburg presented SUPERB at the poster session of the International Forestry Students’ Symposium (IFSS) in Freiburg. Simon provided the audience, consisting of approximately 100 international forestry students from around the world, with a general overview of the project’s objectives and structures, while Catharina shared some hands-on experiences from the German demo and discussed their specific approach to “Prestoration.”
IFSS is the largest annual meeting of the International Forestry Students’ Association (IFSA). It provides students with the opportunity to participate in various forestry activities, exchange information, and share their experiences. The theme for this year’s event was “Transforming Forestry – Staying Ahead of Current and Future Challenges,” which thematically aligns perfectly with the SUPERB project. IFSA students traveled throughout Germany for two weeks, gaining insights into German forests and forestry. During their weekend in Freiburg, they were also joined by IFSA SAN, the IFSA Alumni Network.
This 3rd of October is World Habitat Day! To celebrate the occasion, SUPERB coordinator Elisabeth Pötzelsberger, Head of Resilience Programme at the European Forest Institute (EFI), explained the importance of “prestoration” – the combination of restoration and climate adaptation – for resilient and functional forest habitats. She discussed how it differs from classical restoration approaches, highlighted its relevance to the new EU Nature Restoration Law and listed concrete examples of how prestoration is being applied within the SUPERB demonstration areas in Germany and in the Czech Republic.
What is prestoration? How does it differ from more classical approaches to forest restoration?
Why do we actually restore restore forests? There are large restoration needs, for example, when forests are impacted by hot temperatures, forest fires, and also by prolonged droughts that will also cause outbreaks of pests and pathogens, which can kill forests on large landscape levels. But also to make our forests more diverse again in Europe and to bring back important habitats that, for example, are associated with deadwood and old-growth elements, which have become rare across Europe.
When people talk about restoration, they might think of different objectives that may be located along the so-called restoration continuum. The classical restoration continuum ranges from fighting the drivers of degradation over remediation of ecosystem functions up to full ecological restoration, where species diversity, ecosystem structure and function are restored. However, climate change adds a new dimension to this restoration continuum. Therefore, the consideration of adaptation in restoration, what we can call prestoration, is becoming so important.
Forest researchers and practitioners are therefore supporting this concept, which means the combination of restoration ambitions with the need for adaptation. Adaptation of tree species composition and forest structure in order to increase the resilience of forests under climate change and also ensure forest functioning in the future.
Can you give a few examples that illustrate how prestoration works?
There are already good examples where we are practising prestoration, like in our two SUPERB demonstration areas in central Europe – in Germany (North Rhine-Westfalia) and in the Czech Republic. These regions are naturally dominated by beech forests but some decades or centuries ago have been converted into Norway Spruce plantations.
Now with prolonged droughts, these Norway Spruce forests have been severely damaged by subsequent bark beetle infestations. In SUPERB, we are not only restoring them back into native beech forest ecosystems but already looking into more drought-tolerant habitat types like oak/hornbeam forests and mixing them with even more broadleaved tree species to increase forest resilience and functionality also for future climate conditions.
What challenges does prestoration entail?
Prestoration is neither simple nor straightforward. With climate change, we are really entering uncharted territory. We will be and already are experiencing conditions that we have never experienced before. Also our native forest species are not adjusted to these new conditions. Looking for more adapted species in the Mediterranean may be an option. However, there is also large uncertainty associated with it because we don’t know, for example, whether these species will be truly suited to the climatic conditions that will occur in 100 years’ time, because there is still a broad range of possible climate change scenarios.
And then there is another challenge: forests do not consist only of trees. There are many other plant and animal species that live in these forests and are also dependent on these tree species. So, will they be fit to survive in these climatic conditions and will they be happy to thrive in these forests which may consist of different tree species than today?
What are the prerequisites for successful prestoration?
Due to this large uncertainty, in SUPERB we are convinced that we need flexible approaches and to revisit decisions as we go along. And of course, with SUPERB we are also providing continuous scientific support which will allow us to find out which are the right species compositions and how we can assist the migration of other plant and animal species across the landscape so they can find in the future forest habitats and climate conditions that they are adjusted to.
How is prestoration relevant to the new EU Restoration Law?
So this prestoration concept, this idea of integrating adaptation into restoration, will be of crucial importance if we want to achieve the overall goal of the new EU’s Biodiversity Strategy and the EU’s Forest Strategy, which is to restore European biodiversity and continuous provision of ecosystem services in the future.
These Biodiversity and Forest Strategies of the EU now will be supported by the Nature Restoration legislation which is currently being debated at the EU level. It remains to be seen how much space will be given actually to adaptation in this new restoration proposal.
But already experiencing this high-speed climate change, I think it is pretty clear: we have to look ahead and not backwards if we want to be prepared for what is coming.
Did you know that many forests in Germany’s demo area North Rhine-Westphalia (NRW) have been severely affected by drought and bark beetle outbreaks since 2018? By now, approximately 140.000 ha of Norway spruce forests have been damaged due to spruce bark beetle attacks, and 10.000 ha of pure beech stands are severely affected by drought. To ensure that our forests provide the ecosystem services we need, those areas need to be restored. Therefore, the state of NRW already developed a silviculture and reforestation concept in cooperation with several stakeholders. The concepts are now being tested – amongst others – in SUPERB’s demo sites. These include a total of at least 35 ha in 7 demo sites with at least 5 ha of restoration area per site which will be established across NRW. One “best-practice forest stand” will have the average size of 1 ha.