Consequences of invasion for pollen transfer and pollination revealed in a tropical island ecosystem
© 2018 The Authors. New Phytologist © 2018 New Phytologist Trust.
| Publié dans: | The New phytologist. - 1979. - 221(2019), 1 vom: 15. Jan., Seite 142-154 |
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| Auteur principal: | |
| Autres auteurs: | |
| Format: | Article en ligne |
| Langue: | English |
| Publié: |
2019
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| Accès à la collection: | The New phytologist |
| Sujets: | Journal Article Research Support, U.S. Gov't, Non-P.H.S. Apis mellifera Hawaii dry tropical forest floral traits heterospecific pollen interspecific pollen transfer invasive species pollination network |
| Résumé: | © 2018 The Authors. New Phytologist © 2018 New Phytologist Trust. Pollination is known to be sensitive to environmental change but we lack direct estimates of how quantity and quality of pollen transferred between plant species shifts along disturbance gradients. This limits our understanding of how species compositional change impacts pollen receipt per species and structure of pollen transfer networks. We constructed pollen transfer networks along a plant invasion gradient in the Hawaiian dry tropical forest ecosystem. Flowers and stigmas were collected from both native and introduced plants, pollen was identified and enumerated and floral traits were measured. We also characterized pollen loads carried by individuals of the dominant invasive pollinator, Apis mellifera. Species flowering in native-dominated sites were more tightly connected by pollen transfer than those in heavily invaded sites. Compositional turnover in the pollen loads of A. mellifera was correlated (70%) with turnover in the composition of pollen transfer networks. Floral traits predicted species roles within pollen transfer networks, but many of these differed qualitatively depending on whether plants were native or introduced. Our work indicates that pollen transfer networks change with invasion. Floral morphology and foraging behaviour of the introduced super-generalist pollinator are implicated as key in determining the roles introduced species play within native pollen transfer networks |
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| Description: | Date Completed 07.01.2020 Date Revised 30.09.2020 published: Print-Electronic Citation Status MEDLINE |
| ISSN: | 1469-8137 |
| DOI: | 10.1111/nph.15366 |