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Title: Diurnal effectiveness of pollination by bees and flies in agricultural 'Brassica rapa': implications for ecosystem resilience
Contributor(s): Rader, Romina  (author)orcid ; Edwards, Will (author); Westcott, David A (author); Cunningham, Saul A (author); Howlett, Bradley G (author)
Publication Date: 2013
DOI: 10.1016/j.baae.2012.10.011
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Abstract: Bees are known to provide pollination services to a wide range of crops, yet flies are rarely included in estimates of function. As bees and flies differ markedly in their life history characteristics and resource needs, they may be active and hence provide pollination services at different times of the day. Here, we explore the differences in bee and fly diurnal activity patterns and how this may impact upon pollination services provided to 'Brassica rapa', a mass-flowering crop. We observed pollinators at two-hourly intervals from 6:00 to 20:00 h in twelve fields in New Zealand in 2004-2005. Overall, bees were most active in the middle of the day and were more effective pollinators than flies, driven primarily by the high pollinator efficiency of 'Apis mellifera' and 'Bombus terrestris'. Some fly taxa however, visited flowers early and late in the day when there were few bees. The results of this study demonstrate that fine-scale temporal dynamics and the spatial distribution of crop pollinators may directly affect the quantity of pollination services. The maintenance of biodiversity in agro-ecosystems may therefore be critical to ensure pollinator taxa are available under a range of environmental conditions.
Publication Type: Journal Article
Source of Publication: Basic and Applied Ecology, 14(1), p. 20-27
Publisher: Urban und Fischer Verlag
Place of Publication: Germany
ISSN: 1439-1791
Field of Research (FOR): 060202 Community Ecology (excl Invasive Species Ecology)
060208 Terrestrial Ecology
060808 Invertebrate Biology
Socio-Economic Outcome Codes: 960904 Farmland, Arable Cropland and Permanent Cropland Land Management
960804 Farmland, Arable Cropland and Permanent Cropland Flora, Fauna and Biodiversity
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
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