The board & Bylaws

Torben Hoffman
Board member
Read more!

Torben’s everyday work and passion for the last 11 years, has been climate-adapted solutions such as green roofs, green walls and permeable pavements. From the drawing board together with architects, to the contractor on the construction site, Torben has had a finger on the green infrastructure pulse.

Torben’s has developed, produced and supplied green infrastructure systems to the cities of Scandinavia.

Torben has a background as landscaper, and started working with green roofs 20 years ago in Germany. Later as a professional landscape engineer, Torben has been working with contractors as an operations – and sales manager.

With his geo- and plant knowledge, and a backpack full of sustainable systems, it is Torben’s ultimate goal to contribute to the meeting the challenge of climate change, with solutions that make the cities greener for the benefit of humans, fauna and flora.

Mats Ola Nilsson
Board member
Sofia Eskilsdotter
Board member
Read more!

The best moment in my work as a practising landscape architect, is when I get to experience the actual implementation of green and blue public spaces, in full scale, in real life. Being a part of improving everyday life for a broad range of people, is truly motivating. This driving force combined with a strong passion for nature and art, has influenced me to put time and energy into the fields of knowledge that I personally find the most difficult, that is the technical and biological parts. I believe that these are the most crucial areas when it comes to implementation of our green and blue visons.

I have a long term experience in project planning for complex urban projects, previously working many years within a large architectural office and since a few years back working as an independent specialist consultant. Multifunctional planting beds for urban trees, using rock, and urban wetland parks for stormwater treatment, are some of the technical solutions that are a part of my work. During the last few years my scope has widened to also include vegetation on buildings, such as green walls and green roofs.

Part time I teach at the landscape architect programme at the Swedish University of
Agricultural Sciences in Uppsala. An important part of this work is to engage in course development, assuring that our students will be well equiped to handle the needs of the future. Subject areas that I believe will need extra attention when we adjust our pedagogical activities, are urban ecology, sustainable stormwater solutions, environmental psychology and building integrated vegetation.

Susanna Lehvävirta
Board member
Read more!

Susanna Lehvävirta learned her doctoral degree in 2005, with a thesis focusing on urban forest ecology and user effects. Since then, she has run several research projects concerning urban ecology and the interrelationship between nature and man.

Her research is interdisciplinary and problem-driven. She focuses on holistic approaches to understand urban ecosystems and in order to apply research results. She combines different fields of science to understand the interlinkages between nature and the human society, and to e.g. explore values, and help develop decision making, jurisprudential perspectives etc.

She is a researcher at University of Helsinki and runs three major research programs that focus on green roofs, urban forests, and assisted migration of plants according to climate change. She has a strong background in empirical ecology but due to her interdisciplinary research has published in the fields of law, engineering, economy, recreational psychology and aesthetics also.

Taina Suonio
Board member
Read more!

Taina is a horticulturist, garden designer and researcher at the University of Helsinki Fifth Dimension – Green Roofs in Urban Areas research group. Her research concentrates particularly on the environmental change and policy with regard to green roofs in urban areas. She lectures at various educational institutions on gardening and design, and frequently writes articles in gardening magazines on matters relating to horticulture, gardening, landscaping and the environment.

She was a member of the Executive Committee of the Urban Diversity research project (2010-2013), coordinated by the University of Tampere and also worked as an expert for the “Deck and Roof Gardens and Green Roofs Committee” on the renewal of the RT 85-10709, the national directive on the subject matter.

Taina obtained her first professional qualifications in the field, the British Higher National Diploma (HND) in Horticulture in Northern Ireland. For over ten years she has worked as Planting Designer on several award-winning designs for leading British garden designers (Carol Klein, Andy Sturgeon, Thomas Hoblyn, Paul Stone, Nigel Dunnett, Catherine McDonald, Mark Gregory) at the world-renowned Chelsea Flower Show.

She has also worked as a Product Manager for Environmental Products for VRJ Group, where her main responsibilities comprised sales, product development and planning of green roofs and urban runoff in the ever-growing urban environment. Through her private consultancy Roslings Manor Gardens, she design gardens, roof gardens, planting and green environments (most recently at the 2015 National Housing Fair in Vantaa, Finland, at the London Barbican Center Roof Garden and at major housing development in urban coastal Helsinki, where she was the other initiator of the “Greenest of Green” project, comprising research green roofs, biodiversity kitchen garden, berry forest garden and a deck garden).

Her current positions of trust include the Deputy Chairperson of the Association of Green Environment (VYL) and the Chairperson of the Garden Builders Association (Puutarhanrakentajat ry). Between 2012-2015 she was the Chairperson of Finnish Horticulturists’ Association.

She joined the Scandinavian Green Roof Association (SRGA) as a Member of the Executive Board in the beginning of 2015.

Bent Braskerud
Board member
Read more!

Bent C. Braskerud works as a chief engineer at The City of Oslo Water and Sewerage Works. His main responsibility is preparing the city for increased stormwater due to urbanization and heavy rainfall due to climate change. Green infrastructure is an effective approach to making the city resilient to urban flooding, while increasing the quality of life. Green roofs are important to achieve these goals.

Bent was educated as an agronomist at the Norwegian University of Life Sciences. He worked as a researcher at Jordforsk (now: NIBIO) for several years constructing wetlands to mitigate diffuse agricultural pollution. The work included a PhD. His career continued as a researcher on urban hydrology at The Norwegian Water Resources and Energy Directorate (NVE), resulting in construction of experimental raingardens and green roofs, with measurement of precipitation and runoff. Bent’s work has been published in numerous scientific papers and reports.

Marja Mesimäki
Alternate board member
Read more!

M.Soc.Sc, doctoral student, associate leader of The Fifth Dimension – Green Roofs in Urban Areas -research program, University of Helsinki, Finnish Museum of Natural History & Urban Ecology Research Group

My field of expertise is environmental sociology and environmental social science, specifically urban questions. At the moment I am studying people’s mental images of different kinds of urban green roof solutions and testing multisensory aesthetic and restorative experiences on green roofs. I have explored expectations and experiences of private green roof owners, and studied how green roofs are adopted and realized in large construction processes. I am developing a future-oriented method for studying experiences of urban spaces in different surroundings, to be used e.g. in the context of participatory urban planning and design. My aim is to integrate user perspective into urban greening, using green roofs as model spaces. As part of Fifth Dimension -research program, I am also applying scientific knowledge in real-life construction processes in Helsinki, Finland.

The Fifth Dimension – Green Roofs in Urban Areas –research program aims to produce scientifically high-level and broadly applicable knowledge on optimal green roof solutions in Finland. Scientifically, green roofs serve as experimental model ecosystems for research and provide an opportunity for inter- and transdisciplinary research that is societally relevant. The research policy of the program includes working in close contact with the end users of scientific knowledge, such as municipal and state authorities, companies and the citizens. The main target of the program concerns the potential of green roofs to enhance urban nature and ecosystem services, as part of multifunctional urban green infrastructure. The aim of the program is to evaluate the various benefits green roofs may offer, and to develop optimal solutions and designs for green roofs that offer the best possible services for the urban residents.

Tobias Emilsson
Alternate board member
Read more!

Tobias Emilsson is working as a researcher at the Swedish university of agricultural sciences. He finished his phd in 2006 where he investigated system design and environmental performance of extensive green roofs in a Swedish context. He has since then been working extensively on urban vegetation, substrate design and green wall installations both in research based projects and in cooperation with industrial partners. 

Kamilla Aggerlund
Read more!

Kamilla Aggerlund is a Landscape Architect specialized in adapting cities to climate changes by using green technologies. She is an advocate for sustainable, multifunctional and green storm water solutions, and takes pride to correlate function and design with construction and maintenance. Therefore Kamilla has an extensive knowledge about technics, soil types, green roof substrates, plants and growth conditions.

She works as an Assistant Professor at the University of Copenhagen, Department of Geosciences and Natural Resource Management, Forestry College.

In her daily work Kamilla develops and teaches courses for Urban Landscape Engineers. An education Kamilla has established the climate adaptation courses for since the launch in 2012, one of these, being a green roof and wall course.

Most recent Kamilla and her colleague established the Danish training program for Landscapers, Sewer contractors, Landscape Architects and City planners called “Regnvandskonsulent”, in association with The Danish Technological Institute. The training program will, among others, give Danish municipalities a tool to recommend capable professionals to citizens who want to handle their own rainwater correctly, as part of the Danish municipality’s climate adaptation plans.



(currently only in swedish)