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Research Unit Colloquia

  • Long colloquia last approx. 1h (45'+15')
  • Medium-length colloquia last approx. 50' (35'+15')
  • Short colloquia last approx. 35' (25'+10')

Depending on the interests of the participants, the invitation will only be distributed internally or widely.



Dates 2020Time, LocationDurationTitleAuthor
10.02.202013:00, Engler25'Impact of tree species interactions on intra-specific trait variability in temperate forestsMargaux Didion-Gency
17.03.202013:00, Engler25'Open access: the new publication standardDr. Lothar Nunnenmacher, LIB4RI
08.04.202013:00, Engler25'Modelling CO2 & VegetationProf. Dr. Beni Stocker
19.05.202013:00, Engler25'The production ecology of mixtures: From pattern to process to applicationDr. David Forrester
30.06.202013:00, Engler25'C pools and fluxes in Swiss forests - Data / Models / ScenariosDr. Esther Thürig
25.08.202013:00, Engler25'Tolerance of mixed versus monospecific forest stands to ongoing climate change: indications by functional traits in beech foliage from the Western AlpsCamille Donzé, BSc., University
of Lausanne
28.09.202013:00, Engler25'Forest vegetation in Switzerland based on NFI-dataDr. Daniel Scherrer
26.10.202013:00, Zoom-Meeting25'Tree species responses to soil water shortage in Swiss forestsLorenz Walthert
23.11.202013:00, Zoom-Meeting25'In-situ polytunnel greenhouses to assess the impact of climate smart forests on ecosystem functioning and diversityDr. Barbara Moser
16.12.202013:00, Engler25'Linking O3 fluxes to plant responses: physiological, structural and molecular aspects of O3 injury dynamic within deciduous tree foliageBenjamin Turc, M.Sc
Dates 2019Time, LocationDurationTitleAuthor
29.01.201913:00, Engler25'The potential role of transgenerational epigenetic effects for the acclimation of Pinus sylvestris L. to droughtArun Bose
05.03.201913:00, Engler25'What drives vulnerability to drought in mixed Norway spruce-silver fir forests in Central Europe?Alessandra Bottero
01.04.201913:00, Engler25'Where is the ecological memory in trees?Roman Zweifel
22.05.201913:00, Engler25'Phenology and trace gas exchange affected by climate variability in secondary dry dipterocarp forestRungnapa Kaewthongrach
11.06.201913:00, Engler25'Changes in land use and climate: insights from a long term experiment in a dry Scots pine forest from Central ValaisYann Wittwer
09.07.201913:00, Engler25'Tree rings as a multi-proxy record of past tropical cyclone activity

Ian Altman, Institute of Botany of the Czech Academy of Sciences

21.08.201913:00, Engler25'  
26.09.201910:00, Flury  25'Estimating canopy photosynthesis from sapflux and d13C: the key role of mesophyll conductanceJohn Marshall, Swedish University of Agricultural Sciences, Uppsala
23.10.201913:00, Engler25'Impact of climate change disturbances affecting Mediterranean plant communities. Implications for restorationAlberto Vilagrosa, CEAM & University of Alicante, Spain
26.11.201913:00, Engler25'The role of nutrient and drought in the process of trees morality and survivalShengnan Ouyang
17.12.201913:00, Engler25'QUPFiS project resultsVolodymyr Trotsiuk
Dates 2018Time, LocationDurationTitleAuthor
09.01.201813:00, Engler no presentation 
13.02.201813:00, Engler25'Statistical upscaling of tree-ring data for environmental change researchFlurin Babst
14.03.201813:00, Engler25'Was the late spring frost in 2017 the frost of the century in Switzerland and Germany?Yann Vitasse
09.04.201813:00, Engler no presentation 
17.05.201813:00, Engler25'Linking fungal dynamics, tree growth and forest management in a Mediterranean pine ecosystemEduardo Collado
05.06.201813:00, Engler25'Title not yet defined (Master thesis)Rahel Mösch
09.07.201813:00, Engler35'Mediteranean Tree Rings, Pharaons and the Olive-Tree Radiocarbon Dating of the Santorini Minoan Volcanic EruptionPaolo Cherubini
21.08.201813:00, Engler25'Chilling requirements of major tree species: an experimental approachFrederik Baumgarten
18.09.201813:00, Engler25'Carbon storage and allocation under drought and nutrient availabilityLeonie Schönbeck
   While carbon dynamics in drought exposed trees have gained increasing interest over the last years, the combined effects of drought and nutrient availability on tree functioning are still largely unknown. In the past 3 years, the Model Ecosystem Facility at WSL has been subject of a combined study on drought and nutrient availability on Scots pine. Using photosynthesis, biomass, and carbon allocation measurements we want to unravel the thresholds of drought to tree mortality, and answer the question whether nutrients mitigate or exacerbate the negative effects of drought. 
23.10.201813:00, Engler25'Quantifying, understanding and predicting forest growth in SwitzerlandVolodymir Trotsiuk
13.11.201813:00, Engler25'10 years of high-resolution tree growth monitoring in the LoetschentalPatrick Fonti
04.12.201813:00, Engler25'Climate change impacts and mitigation in forest ecosystemsCharlotte Grossiord
   Predictions on how warming and drying will affect forests are challenged by important lacks in mechanistic understanding of tree species community dynamics. Particularly recognized processes that could influence forest responses to climate change, but that are largely misunderstood, are how trees acclimate to long-term shifts in climate, and how the interactions among species in natural conditions influence this acclimation potential. This presentation will summarize my findings on this topic by combining experimental and observational studies conducted in multiple forest types around the globe (boreal, temperate, Mediterranean, semi-arid and tropical forests). 
Dates 2017Time, Location TitleAuthor
Tue 24. january10:00, Engler The next gradation of the larch winder is expected (35')Beat Forster, WSL
   Every ten years the population of the larch moth (Zeiraphera griseana) in the inner alpine valleys increases significantly. Mass multiplication runs like a wave from west to east through the Alpine region. A new gradation has begun in France. Will it be the same as in previous decades or will the impact of global warming become increasingly clear? 
Mon 13. march10:00, Flury Stitching together ‘big data’ sources: a pan-European fungal meta-database that addresses contemporary questions in ecology and global change biology (35'+15')Carrie Andrew, WSL
   Species occurrence observations from citizen science projects, herbaria, and the digitization of museum records represent a largely underutilized ecological resource. Yet there is unparalleled potential for understanding many aspects of the ecology and biogeography of organisms with these data. This talk demonstrates how such continental-scale meta-databases, in this case a pan-European mycological one (ClimFun), offer unique insights into climate change effects on phenology in recent decades. 
Tue 11. april10:00, Engler Introduced tree species in European forests – Opportunities and challenges (45'+15')Frank Krumm, WSL
   An emotional discussion across Europe is dominating the debate among non-native tree species. Varying definitions of specific terms, social perception – often based on different historic backgrounds, political and economic influences and finally fast environmental changes that are often too fast for basic research activities to provide scientific consultation. The project In-Tree aimed to create a compilation of chapters highlighting some of the major aspects of the topic of introduced tree species within a European context. The presented findings are based on sound scientific studies as well as on reliable examples from practice. The main final product is a book where 90 authors from 45 different institutions and 18 countries have contributed their expertise - some are forestry practitioners actively engaged in forest management, while others are researchers, others are civil servants, and others work for non-governmental agencies focusing on natural sciences. The variety of expertise amongst the authors ranges from nature conservation to forestry, but authors from  social sciences and invasion ecology have also contributed. The book has been translated into German language and as a further outcome of the project that has been funded by the German Ministry of Food and Agriculture, a policy brief has been produced that appeared in 6 different languages and aims to provide policy makers the essentials of the book publication. 
Tue 16. may10:00, Flury The new stable isotope research lab at WSL (35+15')Matthias Saurer, WSL
   Recently, the stable isotope lab of PSI was transferred to WSL. This opens new possibilities for WSL researchers to apply the cutting edge technology of compound-specific isotope analysis and expands the capacity for bulk isotope analysis already available at WSL Zentrallabor. In this talk, background information on stable isotopes is given, the new facilities are presented, and research opportunities discussed. It will be shown that stable isotopes are very helpful to improve our understanding of physiological and biochemical responses of trees to environmental conditions and thus their adaptation/acclimation potential to changing climate conditions. 
Tue 20. june10:00, Engler From Waldsterben to Klimawandel - changing perspective on forest monitoring and inventorying (45'+15')Marco Ferretti, WSL
   Information about forest resources was traditionally based on national forest inventories (NFIs). Starting in the 1970s, emerging environmental concerns make also monitoring to become a popular investigation approach across the forest community. Since then, forest inventory and forest monitoring developed rather independently across Europe, up to the point to be perceived and implemented as two separate, sometimes competing systems.
Scientific and political priorities (e.g. from forest decline to climate change) and spatial and temporal scales (e.g. from national to global) of concern have changed a lot over the past 40 years. Alongside, the demand for multidisciplinary, comparable, long-term, multiscale, high-quality data on forest ecosystem status and changes has increased. As a result, the dualism between forest inventorying and forest monitoring sounds quite obsolete now. Rather, a conceptual and functional integration between forest inventory and forest monitoring is essential.
Thu 6. july10:00, Engler no presentation 
Mon 21. august10:00, Engler Ecological responses to de-icing salt contamination in the street greenery of Riga, Latvia (25'+10')Dalinda Bouraoui, WSL
Mon 2. october10:00, Engler Sounds of soils and trees (35'+15')Marcus Mäder, WSL
Tue 14. november10:00, Engler A synthesis of radial growth patterns preceding tree mortalityMaxime Cailleret, WSL
Tue 19. december10:00, Engler Mountain pine beetle, global marketsCoupling of the canopy and the root system through carbon dynamics in tropical treesJosé Grünzweig