Hans Martin Hanslin
Research Scientist
(+47) 404 75 239
hans.martin.hanslin@nibio.no
Place
Særheim
Visiting address
Postvegen 213, NO-4353 Klepp stasjon
Attachments
CVBiography
My research interests in plant ecology and ecophysiology centre around trait based approaches, phenotypic plasticity, local adaptation, seedling ecology and functional ecology of roots. To pursue the impact of environmental drivers and especially multiple co-varying stressors on plant-soil systems, I use designed experiments to manipulate biotic and abiotic factors under controlled or semi-controlled and field conditions. I have a strong focus on applied aspects and recent projects include multifunctionality in urban constructed systems, restoration of ecological processes and functions, urban climate adaptation, and impact studies of invasive plant species. In turn, these contributions improve planning and management of urban green infrastructure and ecological restoration.
Abstract
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Abstract
Green roofs provide vital functions within the urban ecosystem, from supporting biodiversity, to sustainable climate-positive ESS provisioning. However, how plant communities should best be designed to reach these objectives, and how specific green roof systems vary in their capacity to support these functions is not well understood. Here we compiled data on plant traits and plant–insect interaction networks of a regional calcareous grassland species pool to explore how designed plant communities could be optimised to contribute to ecological functionality for predefined green roof solutions. Five distinct systems with practical functionality and physical constraints were designed, plant communities modelled using object-based optimization algorithms and evaluated using five ecological functionality metrics (incl. phylogenetic and structural diversity). Our system plant communities supported a range of plant–insect interactions on green roofs, but not all species were equally beneficial, resulting in wide-ranging essentiality and redundancy in ecological processes. Floral traits were not predictive of pollinator preferences, but phylogeny was observed to govern the preferences. Large differences in ecological functionality can be expected between green roofs depending on system design and the extent of the plant community composition. Multifunctionality covariance diverged between systems, suggesting that ecological functionality is not inherently universal but dependent on structural limitations and species pool interactions. We conclude that informed system design has a potential to simultaneously support ecosystem services and urban biodiversity conservation by optimising green roof plant communities to provide landscape resources for pollinating insects and herbivores.
Abstract
No abstract has been registered
