Drought reduces floral resources for pollinators

© 2018 The Authors. Global Change Biology Published by John Wiley & Sons Ltd.

Bibliographische Detailangaben
Veröffentlicht in:Global change biology. - 1999. - 24(2018), 7 vom: 13. Juli, Seite 3226-3235
1. Verfasser: Phillips, Benjamin B (VerfasserIn)
Weitere Verfasser: Shaw, Rosalind F, Holland, Matthew J, Fry, Ellen L, Bardgett, Richard D, Bullock, James M, Osborne, Juliet L
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2018
Zugriff auf das übergeordnete Werk:Global change biology
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Lathyrus pratensis Onobrychis viciifolia Prunella vulgaris calcareous grassland climate change drought stress functional traits nectar mehr... pollination water availability Plant Nectar
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520 |a Climate change is predicted to result in increased occurrence and intensity of drought in many regions worldwide. By increasing plant physiological stress, drought is likely to affect the floral resources (flowers, nectar and pollen) that are available to pollinators. However, little is known about impacts of drought at the community level, nor whether plant community functional composition influences these impacts. To address these knowledge gaps, we investigated the impacts of drought on floral resources in calcareous grassland. Drought was simulated using rain shelters and the impacts were explored at multiple scales and on four different experimental plant communities varying in functional trait composition. First, we investigated the effects of drought on nectar production of three common wildflower species (Lathyrus pratensis, Onobrychis viciifolia and Prunella vulgaris). In the drought treatment, L. pratensis and P. vulgaris had a lower proportion of flowers containing nectar and O. viciifolia had fewer flowers per raceme. Second, we measured the effects of drought on the diversity and abundance of floral resources across plant communities. Drought reduced the abundance of floral units for all plant communities, irrespective of functional composition, and reduced floral species richness for two of the communities. Functional diversity did not confer greater resistance to drought in terms of maintaining floral resources, probably because the effects of drought were ubiquitous across component plant communities. The findings indicate that drought has a substantial impact on the availability of floral resources in calcareous grassland, which will have consequences for pollinator behaviour and populations 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 4 |a Lathyrus pratensis 
650 4 |a Onobrychis viciifolia 
650 4 |a Prunella vulgaris 
650 4 |a calcareous grassland 
650 4 |a climate change 
650 4 |a drought stress 
650 4 |a functional traits 
650 4 |a nectar 
650 4 |a pollination 
650 4 |a water availability 
650 7 |a Plant Nectar  |2 NLM 
700 1 |a Shaw, Rosalind F  |e verfasserin  |4 aut 
700 1 |a Holland, Matthew J  |e verfasserin  |4 aut 
700 1 |a Fry, Ellen L  |e verfasserin  |4 aut 
700 1 |a Bardgett, Richard D  |e verfasserin  |4 aut 
700 1 |a Bullock, James M  |e verfasserin  |4 aut 
700 1 |a Osborne, Juliet L  |e verfasserin  |4 aut 
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773 1 8 |g volume:24  |g year:2018  |g number:7  |g day:13  |g month:07  |g pages:3226-3235 
856 4 0 |u http://dx.doi.org/10.1111/gcb.14130  |3 Volltext 
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