A single definition of forest resilience is yet to be found, so we decided to establish a series of interviews introducing scientists who deal with this term every day. Meet Ute Sass-Klaassen from Wageningen University. Her research focuses on tree growth in relation to environmental factors. Droughts, flooding, heat waves, fires, and frost events play an important role for productivity and survival of trees and may cause severe disturbances in forest ecosystem services. Knowledge about forest growth and mortality provides valuable information for understanding how surviving trees have reacted to these disturbances and determining basic parameters of a functioning forest ecosystem.
Tag: climate change
In an effort to foster a definition of resilience in the forestry field, we decided to establish a series of interviews introducing scientists who deal with this term every day. Today meet Elena Cantarello. She is a lecturer in sustainability science and conducts research on the dynamics and thresholds of ecosystem services at Bournemouth University, e.g. by measuring the resilience of forests in terms of recovery, resistance and net change after climate change, disease outbreak and extensive animal grazing.
When you google the term “Resilience”, you get heavily overwhelmed: The term is used in many contexts, both in science and practice, from Psychology to Education, from city planning to climate change adaptation. Obviously, “Resilience” is established jargon, but seems to mean different things in different fields.
by Silvia Abruscato, Gherardo Chirici, Giorgio Matteucci, and Davide Pettenella
On October 27-30th 2018, the storm Vaia hit North-eastern Italy with peak winds of 200 km/h, which compares to a very strong hurricane, and very relevant rainfall. Vaia has not only been the largest single windstorm event in recorded history causing serious damages to the forests in Italy. The storm was also a singular event that has raised unprecedented public attention because it hit some of the most beautiful and most productive forests in Italy located in the Dolomites Mountains, where several UNESCO world heritage sites full of history, culture, and traditions are located. Finally, Vaia caused enormous economic losses: the spruce and fir dominated mountain forests in the region are stocking twice the average biomass per hectare and their growth rates are also approximately double of the Italian average.
After the first shock and quick response to the damages, it became clear that a “multi-actor collaboration” is needed to develop a strategic approach to deal with the aftermath. Consequently, on February 8th 2019, a national congress was held in the Belluno province in the heart of the damaged area to discuss among the Italian scientific and civil community the impact, management and response perspectives after the Vaia storm. The conference was organized by Università di Padova – Dipartimento TESAF, Fondazione G. Angelini, Comune di Belluno, and SISEF – Società Italiana di Selvicoltura ed Ecologia Forestale. Around 600 participants and a large media visibility demonstrated the exceptionally strong interest in the case. Presentations and video are available here.
By Laura Nikinmaa & Maria Schlossmacher
International climate action and therefore climate negotiations are not only about fossil fuels. Forest conservation or forestations became strategies that are (sometimes more and sometimes less) acknowledged around the globe and strategies that are here to stay. The Paris Agreement promotes forest management as a pathway towards halting climate change through the reduction of CO2 emissions. At the end of the climate negotiations, more than 50 countries have pledged to protect existing forests and add tree cover in order to reduce greenhouse gas emissions. However, things might not be that simple.
Science writer and reporter Gabriel Popkin recently released an article in NATURE with the provocative title “How much can forests fight climate change?”. In his text, he examines several studies arguing that trees do not only influence the climate in one direction. Planting trees in order to take more carbon out of the atmosphere is a highly practical way to combat climate change – as long as the trees are planted in the right place. In boreal forests for instance, forests do cool the climate, so reforestation there is one crucial and applied way to meet the climate goals. However, the question how big of a role forest have in fighting climate change is at the same time diverse and complex. Although forests suck carbon dioxide from the air, they also affect the climate in various ways. For example, trees absorb and reflect light differently. The light-green broadleaves reflect more sunlight back to the atmosphere than the dark conifers and therefore have more cooling effect during the summer. All the trees emit chemical compounds that affect the climate in different ways: some cool the climate, some make it warmer. Planting trees in tundra might not be efficient when aiming at cooling the climate.
by Patrick Fonti & Ute Sass-Klaassen
As humans and animals, trees also perceive their environment. However, differently than humans and animals, trees cannot escape unfavorable situation and thus have to have good mechanisms to face them to survive over decades and centennials. Our COST Action STReESS (Studying Tree Responses to extreme Events: a SynthesiS) focused the attention on understanding how trees respond to a changing environment and on how to collect, use and interpret this information to early and directly assess the impact of extreme climate events on forests. This approach, called the “tree-centered approach”, basically let the trees tell us how strong they perceived a given climatic extreme and how this is affecting them over the following years. With today’s current techniques, this can be monitored in near real time, opening also the possibility to create early-warning systems to assess the health status of our forests.
We are happy to share that our network of Marteloscopes is continuously expanding both in terms of number of sites and countries. New countries joining…
An international scientific conference dealing with “Temperate and boreal primeval forests in the face of global change” is organized by The Swiss Federal Institute for…
New Joint EFI-IFSA-IUFRO Project on “Global student networking and green jobs” analyses changing employment in the forest sector and prepares current forest students and young scientists for future leadership.
The forest sector has been facing significant changes in recent years due to various challenges including globalization, international trade, and climate change.
Naturally, this has also changed the nature of forest sector employment. Forestry careers have expanded beyond traditional forest administration and industry jobs. New ‘green jobs’ match a broader societal awareness for forest ecosystem services, climate change mitigation and adaptation, environmental education, recreation, tourism, and nature protection, for example. These shifts in labour market trends call for a new generation of graduates with a strong foundation of knowledge in the context of current global issues.
“The crucial question we need to answer is: Are we, the world’s forestry students of today, prepared for the new expectations and skills society is placing in our hands as future land managers and forest policy decision makers?” emphasises Dolores Pavlovic, President of the International Forestry Students’ Association (IFSA).
A new project run by European Forest Institute (EFI) in close collaboration with IFSA and the International Union of Forest Research Organizations (IUFRO) has now been started to tackle this question. The joint project is generously funded by the German Federal Ministry of Food and Agriculture (BMEL) and will be hosted by EFI in Bonn, Germany.
You thought that humans were the only species that can affect areas far away from where they live? Think again. The forests in India might be the culprits of the rainy days you are having in Germany now.
Recent research has shown that forests and vegetation in general can control the weather across great distances, making the forests and climate even more interconnected than previously thought according to an article published in Quantamagazine. Plants, especially trees, are fascinating organisms: they pump up water from the soil to the atmosphere and simultaneously grab carbon dioxide from the atmosphere into themselves and soils. The features that make this transportation possible are tiny pores on the leaves’ surface, called the stomata. One leaf can have more than one million stomata. So in a large forest the number of stomata is stratospheric and the amount of water they pump can be trillions of liters!
The growing group of researchers studying the interactions between vegetation and climate can now estimate how a forest loss or gain in a certain area can sway the weather patterns in others. One of these scientists is Professor Abigail Swann, the head of the Ecoclimate Lab in the University of Washington. In her recent studies, she has found the teleconnection: the plant communities around the globe are connected by the atmospheric mechanics. Essentially, the effect is similar to that of El Niño, where the warm surface water in the East Pacific Ocean causes heavy rains in South America and Africa as well as drought in Southeast Asia and Australia.