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Landscape complexity benefits bumble bee visitation in faba bean (Vicia faba minor L.) but crop productivity is not pollinator-dependent

Lundin, Ola and Raderschall, Chloe A. and Raderschall, Chloë (2021). Landscape complexity benefits bumble bee visitation in faba bean (Vicia faba minor L.) but crop productivity is not pollinator-dependent. Agriculture, Ecosystems and Environment. 314 , 107417
[Research article]

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Abstract

Faba bean (Vicia faba minor L.) is partially dependent on insects for pollination, but the degree of pollinatordependency and whether crop productivity is limited by insufficient insect pollination remain unknown. We monitored insect pollinators and their foraging behaviors (i. e., legitimate flower visitation, nectar robbing and extra-floral nectary visitation) in a total of 20 faba bean fields of a single cultivar (Tiffany) 2018?2019. Focal fields were situated along a gradient of landscape complexity. In each field, a pollination experiment was established, where plants were either bagged to exclude pollination by insects or remained open for pollinator visits. In addition, all flowers on half of the bagged and open-pollinated plants were pollinated by hand to measure the degree of pollen limitation. We found that bumble bee abundance was higher, and legitimate flower visitor abundance tended to be higher, in complex landscapes with more semi-natural habitat, indicating that the faba bean pollination potential is higher in complex landscapes. The pollination experiment showed that the number of beans per pod was lower in bagged plants compared with other treatments in one of the years, but the lower number of beans per pod was compensated for by a higher individual bean weight, such that there was no pollinator-dependency or effect of hand pollination on total bean mass per plant. We conclude that to be able to characterize the value of insect pollination services in faba bean we need an improved understanding of how pollinator-dependency varies across modern cultivars, and how environmental conditions can increase or, as in our case, cancel this pollinator-dependency.

Authors/Creators:Lundin, Ola and Raderschall, Chloe A. and Raderschall, Chloë
Title:Landscape complexity benefits bumble bee visitation in faba bean (Vicia faba minor L.) but crop productivity is not pollinator-dependent
Series Name/Journal:Agriculture, Ecosystems and Environment
Year of publishing :2021
Volume:314
Article number:107417
Number of Pages:9
Publisher:ELSEVIER
ISSN:0167-8809
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Agricultural Science
Keywords:Apis mellifera, Bombus, Hand pollination, Landscape complexity, Pollen limitation
URN:NBN:urn:nbn:se:slu:epsilon-p-112083
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-112083
Additional ID:
Type of IDID
DOI10.1016/j.agee.2021.107417
Web of Science (WoS)000647427500001
ID Code:24388
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Ecology
(S) > Dept. of Ecology
Deposited By: SLUpub Connector
Deposited On:03 Jun 2021 14:03
Metadata Last Modified:03 Jun 2021 14:11

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