Effects of short- and long-term experimental warming on plant–pollinator interactions and floral rewards in the Low Arctic
Plant phenological and growth responses to experimental warming are widely documented, but less is known about warming effects on plant–pollinator interactions. We investigated the effects of short- and long-term passive warming on flowering phenology, insect visitation, fruit production, and floral...
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Online Access: | http://dx.doi.org/10.1139/as-2022-0034 https://cdnsciencepub.com/doi/full-xml/10.1139/as-2022-0034 https://cdnsciencepub.com/doi/pdf/10.1139/as-2022-0034 |
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crcansciencepubl:10.1139/as-2022-0034 2024-09-30T14:27:35+00:00 Effects of short- and long-term experimental warming on plant–pollinator interactions and floral rewards in the Low Arctic Khorsand, Roxaneh S. Sancier-Barbosa, Flavia May, Jeremy L. Høye, Toke T. Oberbauer, Steven F. National Science Foundation 2024 http://dx.doi.org/10.1139/as-2022-0034 https://cdnsciencepub.com/doi/full-xml/10.1139/as-2022-0034 https://cdnsciencepub.com/doi/pdf/10.1139/as-2022-0034 en eng Canadian Science Publishing https://creativecommons.org/licenses/by/4.0/deed.en_GB Arctic Science volume 10, issue 3, page 424-442 ISSN 2368-7460 journal-article 2024 crcansciencepubl https://doi.org/10.1139/as-2022-0034 2024-09-05T04:11:16Z Plant phenological and growth responses to experimental warming are widely documented, but less is known about warming effects on plant–pollinator interactions. We investigated the effects of short- and long-term passive warming on flowering phenology, insect visitation, fruit production, and floral rewards in the Low Arctic in northern Alaska. To better understand the role of insect visitors in plant reproductive success, we quantified pollen loads on floral visitors and tested for pollen limitation in four species. Long-term warming advanced flowering onset in evergreen shrubs and forbs. Warming, in general, increased the duration of flowering for forbs, evergreen shrubs, and deciduous shrubs. Considering all growth forms together, long-term warming increased floral density. This pattern was primarily driven by deciduous and evergreen shrubs. Dipterans accounted for more visits than Hymenopterans, although Hymenopterans had higher pollen loads. Insect exclusion and warming decreased fruit set in the forb, Bistorta officinalis Delarbre. Nectar volume in the deciduous shrub, Vaccinium uliginosum, was higher in the warmed plots than the control, but nectar quality did not differ. Advanced flowering onset, longer flowering duration, and increased flower density and nectar volume may have important implications for the pollinator community, warranting further research on long-term warming effects on tundra ecosystems. Article in Journal/Newspaper Arctic Arctic Tundra Alaska Canadian Science Publishing Arctic Arctic Science |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
Plant phenological and growth responses to experimental warming are widely documented, but less is known about warming effects on plant–pollinator interactions. We investigated the effects of short- and long-term passive warming on flowering phenology, insect visitation, fruit production, and floral rewards in the Low Arctic in northern Alaska. To better understand the role of insect visitors in plant reproductive success, we quantified pollen loads on floral visitors and tested for pollen limitation in four species. Long-term warming advanced flowering onset in evergreen shrubs and forbs. Warming, in general, increased the duration of flowering for forbs, evergreen shrubs, and deciduous shrubs. Considering all growth forms together, long-term warming increased floral density. This pattern was primarily driven by deciduous and evergreen shrubs. Dipterans accounted for more visits than Hymenopterans, although Hymenopterans had higher pollen loads. Insect exclusion and warming decreased fruit set in the forb, Bistorta officinalis Delarbre. Nectar volume in the deciduous shrub, Vaccinium uliginosum, was higher in the warmed plots than the control, but nectar quality did not differ. Advanced flowering onset, longer flowering duration, and increased flower density and nectar volume may have important implications for the pollinator community, warranting further research on long-term warming effects on tundra ecosystems. |
author2 |
National Science Foundation |
format |
Article in Journal/Newspaper |
author |
Khorsand, Roxaneh S. Sancier-Barbosa, Flavia May, Jeremy L. Høye, Toke T. Oberbauer, Steven F. |
spellingShingle |
Khorsand, Roxaneh S. Sancier-Barbosa, Flavia May, Jeremy L. Høye, Toke T. Oberbauer, Steven F. Effects of short- and long-term experimental warming on plant–pollinator interactions and floral rewards in the Low Arctic |
author_facet |
Khorsand, Roxaneh S. Sancier-Barbosa, Flavia May, Jeremy L. Høye, Toke T. Oberbauer, Steven F. |
author_sort |
Khorsand, Roxaneh S. |
title |
Effects of short- and long-term experimental warming on plant–pollinator interactions and floral rewards in the Low Arctic |
title_short |
Effects of short- and long-term experimental warming on plant–pollinator interactions and floral rewards in the Low Arctic |
title_full |
Effects of short- and long-term experimental warming on plant–pollinator interactions and floral rewards in the Low Arctic |
title_fullStr |
Effects of short- and long-term experimental warming on plant–pollinator interactions and floral rewards in the Low Arctic |
title_full_unstemmed |
Effects of short- and long-term experimental warming on plant–pollinator interactions and floral rewards in the Low Arctic |
title_sort |
effects of short- and long-term experimental warming on plant–pollinator interactions and floral rewards in the low arctic |
publisher |
Canadian Science Publishing |
publishDate |
2024 |
url |
http://dx.doi.org/10.1139/as-2022-0034 https://cdnsciencepub.com/doi/full-xml/10.1139/as-2022-0034 https://cdnsciencepub.com/doi/pdf/10.1139/as-2022-0034 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic Tundra Alaska |
genre_facet |
Arctic Arctic Tundra Alaska |
op_source |
Arctic Science volume 10, issue 3, page 424-442 ISSN 2368-7460 |
op_rights |
https://creativecommons.org/licenses/by/4.0/deed.en_GB |
op_doi |
https://doi.org/10.1139/as-2022-0034 |
container_title |
Arctic Science |
_version_ |
1811633641357312000 |