Monitoring European forests: results for science, policy, and society
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KeywordsEuropean Forest United Nation Convention Tree Defoliation Forest Monitoring Wood Supply
Forest inventories have been carried out in Europe for centuries with the view to secure the wood supply. The first forest surveys based on probabilistic sampling design started in the early 1920s with the aim to provide information about sustainability of wood use at national level. The origin of forest monitoring is much more recent as it often rises from international information needs that demand answers from coordinated multidisciplinary research. In Europe forest monitoring started in the 1970s to respond to urgent scientific, political, and societal questions related to the alleged forest decline in relation to air pollution. At that time, the concern on possible effects of air pollutants was at the top of the political agenda and led to an unprecedented, international effort, like the United Nations Convention on Long-range Transboundary Air Pollution (CLRTAP, Geneva 1979) signed by 51 parties. Within the CLRTAP, International Co-operative Programme on the Assessment and Monitoring of Air Pollution Effects on Forests (ICP Forests) was installed and launched in 1985.
Much work, with great enthusiasm and with improved quality, has been done over the past 30 years. At the same time, however, it is easy to realize that—while the demand for the monitoring of European forest boosted the set-up of internationally coordinated forest monitoring initiatives—the support has considerably slowed down over time. There are many reasons behind this loss of support (e.g., Skelly and Innes 1994; Peterman 1990; Legg and Nagy 2006; Lindenmayer and Likens 2009), but now reconciling monitoring with science, policy, and society has been repeatedly claimed to be an important target (e.g., Ferretti and Fischer 2013). This target may be achieved by making forest monitoring (i) of high quality (e.g., Sulkava et al. 2007) and compliant with key scientific requirements, (ii) capable to address forest and environmental issues that are of concern for our society, and (iii) able to provide answers to political questions (Ferretti 2011). This is particularly true for a programme like ICP Forests, which has a clear mandate rooted in the UNECE CLRTAP.
The 2nd ICP Forests Scientific Conference “Today’s evaluations and future monitoring” held in Belgrad, Serbia in 2013, intended to launch a signal in this direction. It was a one-day event attended by 70 scientists and experts from 21 countries, with an impressive number of oral presentations (21) and posters (28). Several issues related to the biological response of forests to environmental factors, the factors driving the biological response, as well as new tools, ideas, and concepts were addressed (Ferretti and Fischer 2013). Particular emphasis was placed on atmospheric deposition, its impact on tree and soil compartments and on reliable measurement methods.
the multi-purpose use of inventory and monitoring network: from the investigation on patterns related to pine sawfly and Scleroderris canker (Nevalainen et al. 2015), to the estimation of ozone risk for forests and human health (Cristofori et al. 2015), and to a platform for large-scale mycorrhizal studies (Suz et al. 2015);
When introducing this special issue we would like to acknowledge the members of the Scientific Committee of the Conference (Bruno De Vos INBO, Belgium; Richard Fischer, TI, Hamburg, Germany; Karin Hansen, IVL, Sweden; Marcus Schaub, WSL, Switzerland) and the organizers of the conference (Institute of Forestry, Serbia and Programme Coordinating Centre of ICP Forests). We are grateful to all those that submitted their manuscript for this special issue. Last, but not least, sincere thanks to Erwin Dreyer and Marianne Pfeiffer (INRA Nancy) for their efforts in coordinating the editorial work of this special issue.
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