DOI: 10.1111/gcb.14130
Scopus记录号: 2-s2.0-85045236213
论文题名: Drought reduces floral resources for pollinators
作者: Phillips B.B. ; Shaw R.F. ; Holland M.J. ; Fry E.L. ; Bardgett R.D. ; Bullock J.M. ; Osborne J.L.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2018
卷: 24, 期: 7 起始页码: 3226
结束页码: 3235
语种: 英语
英文关键词: calcareous grassland
; climate change
; drought stress
; functional traits
; Lathyrus pratensis
; nectar
; Onobrychis viciifolia
; pollination
; Prunella vulgaris
; water availability
Scopus关键词: angiosperm
; calcareous grassland
; climate change
; community composition
; drought stress
; functional response
; meadow
; nectar
; pollination
; pollinator
; water availability
; Lathyrus pratensis
; Onobrychis viciifolia
; Prunella vulgaris
英文摘要: 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. © 2018 The Authors. Global Change Biology Published by John Wiley & Sons Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110362
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Environment and Sustainability Institute, University of Exeter, Penryn, Cornwall, United Kingdom; School of Earth and Environmental Sciences, The University of Manchester, Manchester, United Kingdom; NERC Centre for Ecology and Hydrology, Wallingford, Oxfordshire, United Kingdom
Recommended Citation:
Phillips B.B.,Shaw R.F.,Holland M.J.,et al. Drought reduces floral resources for pollinators[J]. Global Change Biology,2018-01-01,24(7)