Hans Martin Hanslin

Forsker

(+47) 404 75 239
hans.martin.hanslin@nibio.no

Sted
Særheim

Besøksadresse
Postvegen 213, NO-4353 Klepp stasjon

Biografi

Fagtema

  • økosystemtjenester og multifunksjonalitet i urban grøntstruktur
  • økologisk restaurering etter inngrep i landskapet
  • spredning og økologiske effekter av invasive arter
  • urban grønn infrastruktur som grønne tak, vegeterte infiltrasjonssoner og regnbed
  • restaurering av biologisk mangfold og funksjoner
  • stressresponser, rotvekst og samspill med jordforhold i konstruerte systemer

Les mer
Til dokument

Sammendrag

Road Ecology has experienced rapid growth as a field, yet significant knowledge and research gaps remain, particularly regarding underexplored impacts of roads on fauna and flora, ecosystems and landscapes, as mitigation methods and management solutions to avoid or reduce negative impacts. Here, we synthesize the key research needs identified throughout the book and emphasize topics that have received limited attention, highlighting the growing need for interdisciplinary and technologically advanced studies, and innovative statistical methodologies to assess infrastructure impacts and the combined effects of different types of infrastructures (such as roads and powerlines) on biodiversity. We highlight the need for more comprehensive studies on ecosystem functioning, evolutionary effects, and the role of roadside habitats, while calling for improvements in the cost-effectiveness of mitigation measures and large-scale assessments of road impacts. Emerging research priorities for Road Ecology include a growing emphasis on interdisciplinary and technologically advanced studies, and innovative statistical methodologies to assess infrastructure impacts and the combined effects of multiple infrastructures (such as roads and powerlines) on biodiversity. The impact of new infrastructure in areas supporting multiple migratory species is also becoming a priority issue, especially in regions where there is significant growth in infrastructure projects. Interdisciplinary efforts should prioritize strategies that balance infrastructure development with biodiversity conservation, especially in rapidly developing regions.

Til dokument

Sammendrag

Plant selection is critical for the performance and long-term functionality of NBS. However, selecting suitable species remains challenging due to factors such as the need to balance multiple performance criteria. This study addressed this gap by proposing a structured decision-making framework for roadside rain gardens (RGs) in cold climates, based on three objectives, thirteen criteria, and sixteen quantitative metrics scored on a 1–5 scale. The framework was tested on five plant species commonly used in RGs in Norway to demonstrate its application and assess data availability for the metrics. Results showed that the evaluated plant species exhibit different strengths across objectives: for instance, Bolboschoenus maritimus excelled in plant procurement and establishment support, while Iris pseudacorus scored highest in functions of interest. Consequently, a combination of high-performing species was recommended for RG vegetation design. While the framework was successfully applied, limited data for some metrics required assumptions, highlighting the need for more comprehensive species-specific databases. Given the critical role of plants in the success of NBS, it is recommended that the framework be integrated into official RG design guidelines, with criteria tailored to local conditions.

Til dokument

Sammendrag

Roads impose several types of negative impact on landscapes and biodiversity, but may also favor some organisms by providing habitats and dispersal corridors. To prioritize, plan, design, and perform activities for promoting biodiversity in road verges, it is essential to understand which key environmental factors contribute to forming different types of roadside habitats. In this chapter, we explore relationships between biodiversity and environmental factors in road verges based on a literature review with a primary focus of vascular plants and arthropods. Roadside literature indicates a number of interacting ecological factors, which together form the roadside habitat and determine community composition. These key factors can be assigned to three groups: (1) ecological conditions such as soil, topography, and microclimate, (2) ecological processes such as vegetation succession and disturbance or management of ground and vegetation, and (3) the surrounding landscape. Based on the identified key factors, we suggest an ecological classification of roadside habitats into four major groups, namely successional roadsides, dry roadsides, tallgrass roadsides, and meadow roadsides. Trees and shrubs can occur in all groups, for example as tree avenues or hedgerows, resulting in a cross-cutting subgroup: successional/dry/tallgrass/meadow roadsides with trees and shrubs.