A1 Journal article (refereed)
Effects of landscape composition on hoverflies (Diptera: Syrphidae) in mass-flowering crop fields within forest-dominated landscapes (2022)

Toikkanen, J., Halme, P., Kahanpää, J., & Toivonen, M. (2022). Effects of landscape composition on hoverflies (Diptera: Syrphidae) in mass-flowering crop fields within forest-dominated landscapes. Journal of Insect Conservation, 26(6), 907-918. https://doi.org/10.1007/s10841-022-00436-w

JYU authors or editors

Publication details

All authors or editors: Toikkanen, Jenni; Halme, Panu; Kahanpää, Jere; Toivonen, Marjaana

Journal or series: Journal of Insect Conservation

ISSN: 1366-638X

eISSN: 1572-9753

Publication year: 2022

Publication date: 16/10/2022

Volume: 26

Issue number: 6

Pages range: 907-918

Publisher: Springer

Publication country: Netherlands

Publication language: English

DOI: https://doi.org/10.1007/s10841-022-00436-w

Publication open access: Openly available

Publication channel open access: Partially open access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/83944

Abstract

Agricultural intensifcation has led to structurally simplifed landscapes with reduced and fragmented resources for farmland insects. However, studies on the efects of landscape composition on farmland insects have mainly been performed in areas dominated by open arable land and semi-natural grasslands, while studies from forest-dominated landscapes are scarce. This research examined the efects of landscape composition on hoverfy species richness and abundance in arable land in boreal forest-dominated landscapes. Hoverfies were sampled in 22 mass-fowering caraway (Carum carvi) felds in Central Finland using pan traps. The efects of landscape composition on species richness and abundance were examined for all hoverfies, and for species groups with diferent adult habitat preferences. Landscape composition was measured as proportions of land cover classes within two diferent radii. Species richness and abundances of all hoverfies, forest species and open-habitat species increased with decreasing arable land cover and/or increasing forest cover within a 500 m radius (the two land cover classes strongly negatively correlated). Wetland species were most abundant in landscapes with an intermediate cover of arable land and forest, and most species-rich in landscapes with intermediate (10%) water cover. The species richness and abundance of mixed-habitat species increased with increasing cover of transitional woodland.

Keywords: insects; Syrphidae; biodiversity; habitat; agricultural environment; land cover; agricultural land; arable area; carum; forests

Free keywords: arable land; Carum carvi; forest; habitat preference; land cover; syrphid

Contributing organizations

Ministry reporting: Yes

Reporting Year: 2022

JUFO rating: 1