Elina Vapaavuori,^* Jarmo K. Holopainen,^** Toini Holopainen,^*** Riitta Julkunen-Tiitto,^**** Seija Kaakinen,^***** Anne Kasurinen,^****** Sari Kontunen-Soppela,^******* Katri Kostiainen,^******** Elina Oksanen,^********* Petri Peltonen,^********** Johanna Riikonen,^*********** Ingmar Tulva<sup>************


*</sup>Elina Vapaavuori holds a PhD in plant physiology and works as a senior scientist and program leader at the Finnish Forest Research Institute. She is a specialist in ecophysiology and stress physiology of forest trees with emphasis on the whole tree physiology. Since the early 1990s her research focus is in climate change effects on trees and the effects of greenhouse gases, warming, and nitrogen availability on tree performance from the cellular to whole tree level. Her address: The Finnish Forest Research Institute, Suonenjoki Research Unit, Juntintie 154, FI-77600 Suonenjoki, Finland. Elina.Vapaavuori@metla.fi
^**Jarmo Holopainen is a professor in applied ecology at the University of Kuopio. His main research interests lie in entomology, species interactions, and biosphere-atmosphere feedback systems. His recent research focus has been on the multiple functions of plant volatiles, particularly under environmental stress. His address: Department of Environmental Science, University of Kuopio, P.O. Box 1627, FI-70211 Kuopio, Finland. jarmo.holopainen@uku.fi
^***Toini Holopainen is a professor of ecology and environmental science at the University of Kuopio. She is a specialist in environmental ecophysiology, and her study interests from the late 1970s have ranged from bioindication to climate change effects on plants and ecosystems. Recently her research has focused on climate change effects on forest and peatland ecosystems with special emphasis on belowground responses and interactions between the plant and environment. Her address: Department of Environmental Science, University of Kuopio, P.O. Box 1627, FI-70211 Kuopio, Finland. toini.holopainen@uku.fi
^****Riitta Julkunen-Tiitto is a professor in plant ecology at the University of Joensuu. She is a specialist in plant stress ecophysiology and plant chemical resistance issues. Her research has focused on different plant metabolic responses to CO2, O3, temperature, UV, and drought, and natural compounds as a raw material for product protections. Her address: University of Joensuu, Faculty of Biosciences, P.O. Box 111, FI-80101 Joensuu, Finland. rjt@joensuu.fi
^*****Seija Kaakinen holds a PhD in botany and has worked as a principal researcher at the University of Kuopio and at the Finnish Forest Research Institute. Her main interests have been in tree physiology. Since the late 1990s she has been working with wood chemistry and structure. She has studied this topic related to forest management, especially nutrient availability and thinning. Her other interests have been wood properties of deciduous as well as conifer trees in climate change experiments. Her address: The Finnish Forest Research Institute, Suonenjoki Research Unit, Juntintie 154, FI-77600 Suonenjoki, Finland. Seija.Kaakinen@metla.fi
^******Anne Kasurinen works as a postdoctoral researcher at the University of Kuopio. Her main focus is on climate change effects on soil ecology and belowground processes of forest trees. During her PhD work, she concentrated on elevated CO2 and O3 effects, but recently she has been studying the impacts of climatic warming and tropospheric O3 on tree carbon allocation by using the stable isotope labeling method. Her address: University of Kuopio, Department of Environmental Science, P.O. Box 1627, FI-70211 Kuopio, Finland. Anne.Kasurinen@uku.fi
^*******Sari Kontunen-Soppela holds a PhD in plant physiology and works as a senior assistant at the University of Joensuu. Her research interests are climate change effects on deciduous forest trees. Her address: University of Joensuu, Faculty of Biosciences, P.O. Box 111, FI-80101 Joensuu, Finland. Sari.Kontunen-Soppela@joensuu.fi
^********Katri Kostiainen holds a PhD in plant physiology and works as a postdoctoral researcher at the Finnish Forest Research Institute. She studies how climate change affects wood formation and wood properties of northern forest trees. Her address: Finnish Forest Research Institute, Suonenjoki Research Unit, Juntintie 154, FI-77600 Suonenjoki, Finland. katri.kostiainen@metla.fi
^*********Elina Oksanen is a professor of plant physiology and biotechnology at the University of Joensuu. She is a specialist in plant stress physiology and recently the main focus has been on ecophysiological research combined with molecular biology. She has been studying responses of deciduous forest trees to elevated ozone, carbon dioxide, drought, soil nitrogen, and several other climate change–related stress factors since the 1990s. Her address: University of Joensuu, Faculty of Biosciences, P.O. Box 111, FI-80101 Joensuu, Finland. Elina.Oksanen@joensuu.fi
^**********Petri Peltonen holds a PhD in biology and currently works as a consultant at Sito Ltd. During his PhD work he concentrated on the effects of elevated CO2 and O3 on plant phenolic chemistry and plant–pest interactions. His address: The Finnish Forest Research Institute, Suonenjoki Research Unit, Juntintie 154, FI-77600 Suonenjoki, Finland. Petri.Peltonen@metla.fi
^***********Johanna Riikonen is a postdoctoral researcher at the University of Kuopio. She is especially interested in the stress physiology of forest trees. Her address: University of Kuopio, Department of Environmental Science, Yliopistonranta 1E, FI-70210 Kuopio, Finland. Johanna.Riikonen@uku.fi
^************Ingmar Tulva holds a MSc in plant ecology and ecophysiology, and works as a researcher at the University of Tartu. His research interests are architecture of deciduous trees and tree photosynthesis modeling. His address: Institute of Ecology and Earth Sciences, University of Tartu, EE-51005 Tartu, Estonia. ingmar.tulva@ut.ee