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Linear infrastructure habitats for the conservation of plants and pollinators - The value of road verges and power-line corridors for landscape-scale diversity and connectivity

Dániel Ferreira, Juliana (2021). Linear infrastructure habitats for the conservation of plants and pollinators - The value of road verges and power-line corridors for landscape-scale diversity and connectivity. Diss. (sammanfattning/summary) Sveriges lantbruksuniv., Acta Universitatis Agriculturae Sueciae, 1652-6880
ISBN 978-91-7760-803-5
eISBN 978-91-7760-804-2
[Doctoral thesis]

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Abstract

The substantial reduction in the area of semi-natural grasslands due to the intensification of agriculture and silviculture has resulted in a dramatic decline of species that depend on these habitats. Simultaneously, the area of grassland habitats along infrastructure such as power lines and roads continues to increase and can even surpass the area of semi-natural grasslands of high nature value. In this thesis, I aimed to explore to what extent linear infrastructure habitats contribute to the biodiversity of plants and flower-visiting insects and landscape connectivity. I showed that the presence of power-line corridors in the landscape positively influenced the alpha and gamma diversity of plants, but that this habitat had no effect on beta diversity. Road verges and power-line corridors had as high alpha diversity of plant and insect species as semi-natural pastures of high nature value. Despite the fact that road verges increase the structural connectivity in the landscape, they did not strongly influence the alpha, beta or gamma diversity of plants, butterflies or bumblebees in other grassland types. Further, I found that road verges are corridors for flower-visiting insects irrespective of their diversity of flowering plants. My results also showed that roads are barriers to the movements of flower-visiting insects regardless of the traffic intensity of the road, and that traffic mortality rates of bumblebee queens increase with increasing traffic intensity. Finally, my thesis highlights that the contribution of linear infrastructure habitats to landscape connectivity for flower-visiting insects can be constrained by the behavioural responses of individuals to these habitats and by an increased mortality risk.

Authors/Creators:Dániel Ferreira, Juliana
Title:Linear infrastructure habitats for the conservation of plants and pollinators - The value of road verges and power-line corridors for landscape-scale diversity and connectivity
Series Name/Journal:Acta Universitatis Agriculturae Sueciae
Year of publishing :2021
Number:2021:63
Number of Pages:98
Publisher:Swedish University of Agricultural Sciences
ISBN for printed version:978-91-7760-803-5
ISBN for electronic version:978-91-7760-804-2
ISSN:1652-6880
Language:English
Publication Type:Doctoral thesis
Article category:Other scientific
Version:Published version
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
Keywords:alpha-, beta-, gamma-diversity, functional connectivity, structural connectivity, road mortality, corridors, barriers, behaviour, semi-natural grasslands
URN:NBN:urn:nbn:se:slu:epsilon-p-114076
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-114076
ID Code:25947
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Ecology
(S) > Dept. of Ecology
Deposited By: SLUpub Connector
Deposited On:25 Oct 2021 15:25
Metadata Last Modified:25 Oct 2021 15:31

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