Home About Browse Search
Svenska


Landscape crop diversity and semi-natural habitat affect crop pollinators, pollination benefit and yield

Raderschall, Chloë and Bommarco, Riccardo and Lindström, Sandra A.M. and Lundin, Ola (2021). Landscape crop diversity and semi-natural habitat affect crop pollinators, pollination benefit and yield. Agriculture, Ecosystems and Environment. 306 , 107189
[Journal article]

[img] PDF
2MB

Abstract

Agricultural intensification has led to the conversion of natural habitats into agricultural fields, increased field sizes and simplified crop rotations. The resulting homogenisation of the landscape has led to a decline in bees, which provide an essential ecosystem service to agriculture. It has been suggested that an increase in landscape crop diversity supports higher biodiversity by providing more diverse and continuous resources without taking land out of agricultural production. We selected 14 faba bean (Vicia faba minor L.) fields in southern Sweden along uncorrelated gradients of landscape crop diversity and proportion of semi-natural habitat within 1.5 km radii surrounding focal fields. Pollinator surveys and pollinator exclusion experiments were conducted to assess whether landscape crop diversity affected pollinator densities, pollinator foraging behaviour (i.e. legitimate flower visitation, nectar robbing or extra-floral nectary visitation), pollination and yield formation. Landscape crop diversity enhanced bumble bee densities. Insect-pollinated faba bean plants produced, on average, 27 % higher bean weight per plant than bagged plants and the insect pollination benefit decreased with increasing semi-natural habitat cover. Bumble bee and honey bee densities, the proportion of nectar robbing bees as well as faba bean yield increased with increasing proportion of semi-natural habitat. Pollinator densities were not the driver of high yields associated with higher proportions of semi-natural habitat because the observed yield increase was unrelated to pollinator densities and driven by bagged plants that were excluded from pollinator visits. Insect pollination, however, clearly decreased the yield gap associated with low proportions of semi natural habitat in the landscape. Our results highlight that agri-environmental policies should promote the retention of existing semi-natural habitats and encourage landscape crop diversity to provide pollinators with sufficient food and nesting resources.

Authors/Creators:Raderschall, Chloë and Bommarco, Riccardo and Lindström, Sandra A.M. and Lundin, Ola
Title:Landscape crop diversity and semi-natural habitat affect crop pollinators, pollination benefit and yield
Series Name/Journal:Agriculture, Ecosystems and Environment
Year of publishing :2021
Volume:306
Article number:107189
Number of Pages:10
Publisher:ELSEVIER
ISSN:0167-8809
Language:English
Publication Type:Journal 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:Landscape crop diversity, Pollinators, Pollination, Faba beans, Bumble bee, Semi-natural habitat, Ecological intensification
URN:NBN:urn:nbn:se:slu:epsilon-p-110048
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-110048
Additional ID:
Type of IDID
DOI10.1016/j.agee.2020.107189
Web of Science (WoS)000594528900010
ID Code:21368
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Ecology
(S) > Dept. of Ecology
Deposited By: SLUpub Connector
Deposited On:20 Jan 2021 15:43
Metadata Last Modified:20 Jan 2021 15:51

Repository Staff Only: item control page

Downloads

Downloads per year (since September 2012)

View more statistics

Downloads
Hits