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dc.contributor.authorGoulson, Dave-
dc.contributor.authorHanley, Michael E-
dc.description.abstractThe rapid decline in bumblebee populations within Europe has been linked to habitat loss through agricultural intensification, and a consequential reduction in the availability of preferred forage plants. The successful introduction of four European Bombus species to the South Island of New Zealand from England (in 1885 and 1906) provides an opportunity to determine how important different forage plants (also introduced from the U.K.) are to two severely threatened European bumblebee species (Bombus ruderatus and B. subterraneus). In January 2003 we conducted a survey of bumblebee populations across 70 sites in the central and southern South Island, recording which plant species were being used as pollen and nectar sources for each Bombus species. All four bumblebee species showed a clear preference for plants of European origin. Only B. terrestris, the most polylectic species, was recorded feeding on native plant species. The longer-tongued bumblebees, B. hortorum, B. ruderatus, and B. subterraneus, foraged predominantly on just two plant species; Trifolium pratense for both nectar and pollen, and Echium vulgare for nectar. These plant species are now declining in abundance in the U.K. Our results provide support for the hypothesis that the loss of flower-rich meadows, particularly those containing populations of Fabaceae species with long corollae, is responsible for the decline of bumblebee species across Europe. Comparison with earlier bumblebee surveys suggests that long-tongued bumblebees may also be in decline in New Zealand, particularly B. subterraneus which is now very localised and scarce.en_UK
dc.publisherNew Zealand Ecological Society-
dc.relationGoulson D & Hanley ME (2004) Distribution and forage use of exotic bumblebees in South Island, New Zealand, New Zealand Journal of Ecology, 28 (2), pp. 225-232.-
dc.rightsPublished in New Zealand Journal of Ecology by the New Zealand Ecological Society Inc (NZES) with the following policy: Copyright in this material is owned by the New Zealand Ecological Society Inc (NZES). The material with an original publication date greater than three years old may be reproduced free of charge in any format or media without requiring specific permission.-
dc.subjectTrifolium pratenseen_UK
dc.titleDistribution and forage use of exotic bumblebees in South Island, New Zealanden_UK
dc.typeJournal Articleen_UK
dc.citation.jtitleNew Zealand Journal of Ecology-
dc.type.statusPublisher version-
dc.contributor.affiliationBiological and Environmental Sciences-
dc.contributor.affiliationUniversity of Southampton-
Appears in Collections:Biological and Environmental Sciences Journal Articles

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