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Joel Lönnqvist
Joel Lönnqvist

Joel Lönnqvist

PhD Student
Luleå University of Technology
Urban Water Engineering
Architecture and Water
Department of Civil, Environmental and Natural Resources Engineering
+46 (0)920 493624
T3019 Luleå

Joel's research interest is mainly green infrastructure and the role of green roofs for the provision of ecosystem services such as stormwater management and biodiversity in built-up areas.

The primary focus of the research is on how different plant compositions affect the ability of green roofs to maintain and delay stormwater volumes at different rainfall intensities and seasons. The research also aims to improve the understanding of how plant communities on green roofs develop over time, especially in challenging climates, and to what extent unintended vegetation (weeds) can contribute with various ecosystem services.

He also studies the relationship between species diversity and biomass on Nordic green roofs and the importance of various abiotic variables as well as weather parameters for plant propagation and survival over time.

Joel has a background as a biologist with a master's degree in biology with a specialization in limnology. His master's thesis was carried out at the Swedish University of Agricultural Sciences (LTU) and dealt with how the size and characteristics of the stream catchments affect the distribution and composition of aquatic plants in dams made of beavers (Castor fiber).

Research Projects


Article, review/survey

Socio-Ecological Dimensions of Spontaneous Plants on Green Roofs (2021)

Schrieke. D, Lönnqvist. J, Blecken. G, Williams. N, Farrell. C
Part of: Frontiers in Sustainable Cities
Article in journal

Temperatures and precipitation affect vegetation dynamics on Scandinavian extensive green roofs (2021)

Lönnqvist. J, Hanslin. H, Gisvold Johannessen. B, Muthanna. T, Viklander. M, Blecken. G
International journal of biometeorology, Vol. 65, nr. 6, s. 837-849
Article in journal

The thermal performance of a green roof on a highly insulated building in a sub-arctic climate (2021)

Schade. J, Lidelöw. S, Lönnqvist. J
Energy and Buildings, Vol. 241
Article in journal

Vegetation cover and plant diversity on cold climate green roofs (2021)

Lönnqvist. J, Blecken. G, Viklander. M
Journal of Urban Ecology, Vol. 7, nr. 1
Conference paper

Impacts of monoculture and mixed vegetation on green roof hydrological function (2019)

Lönnqvist. J, Hjelm. J, Blecken. G, Viklander. M
Part of: Urban Water, Novatech 2019, Graie, 2019