Knowledge gaps about mixed forests: What do European forest managers want to know and what answers can science provide?

Lluís Coll*, Aitor Ameztegui, Catherine Collet, Magnus Löf, Bill Mason, Maciej Pach, Kris Verheyen, Ioan Abrudan, Anna Barbati, Susana Barreiro, Kamil Bielak, Andrés Bravo-Oviedo, Barbara Ferrari, Zoran Govedar, Jiri Kulhavy, Dagnija Lazdina, Marek Metslaid, Frits Mohren, Mário Pereira, Sanja PericErvin Rasztovits, Ian Short, Peter Spathelf, Hubert Sterba, Dejan Stojanovic, Lauri Valsta, Tzvetan Zlatanov, Quentin Ponette

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

72 Citations (Scopus)


Research into mixed-forests has increased substantially in the last decades but the extent to which the new knowledge generated meets practitioners’ concerns and is adequately transmitted to them is unknown. Here we provide the current state of knowledge and future research directions with regards to 10 questions about mixed-forest functioning and management identified and selected by a range of European forest managers during an extensive participatory process. The set of 10 questions were the highest ranked questions from an online prioritization exercise involving 168 managers from 22 different European countries. In general, the topics of major concern for forest managers coincided with the ones that are at the heart of most research projects. They covered important issues related to the management of mixed forests and the role of mixtures for the stability of forests faced with environmental changes and the provision of ecosystem services to society. Our analysis showed that the current scientific knowledge about these questions was rather variable and particularly low for those related to the management of mixed forests over time and the associated costs. We also found that whereas most research projects have sought to evaluate whether mixed forests are more stable or provide more goods and services than monocultures, there is still little information on the underlying mechanisms and trade-offs behind these effects. Similarly, we identified a lack of knowledge on the spatio-temporal scales at which the effects of mixtures on the resistance and adaptability to environmental changes are operating. Our analysis may help researchers to identify what knowledge needs to be better transferred and to better design future research initiatives meeting practitioner's concerns.

Original languageEnglish
Pages (from-to)106-115
JournalForest Ecology and Management
Publication statusPublished - 1 Jan 2018


  • Ecosystem services
  • Forest management and functioning
  • Forest stability
  • Participatory process
  • Research challenges
  • Review
  • Species mixtures


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