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Why flower visitation is a poor proxy for pollination: measuring single-visit pollen deposition, with implications for pollination networks and conservation

文献类型：期刊论文

作者Caroline King ; Gavin Ballantyne ; Pat G. Willmer*
刊名Methods in Ecology and Evolution
出版日期2013
卷号4期号:9页码:811-818
关键词flower visitor network pollen deposition pollination syndromes pollinator specialization/generalization
中文摘要

Summary

  1. The relative importance of specialized and generalized plant-pollinator relationships is contentious, yet analyses usually avoid direct measures of pollinator quality (effectiveness), citing difficulties in collecting such data in the field and so relying on visitation data alone.
  2. We demonstrate that single-visit deposition (SVD) of pollen on virgin stigmas is a practical measure of pollinator effectiveness, using 13 temperate and tropical plant species. For each flower the most effective pollinator measured from SVD was as predicted from its pollination syndrome based on traditional advertisement and reward traits. Overall, c. 40% of visitors were not effective pollinators (range 0–78% for different flowers); thus, flower–pollinator relationships are substantially more specialized than visitation alone can reveal.
  3. Analyses at species level are crucial, as significant variation in SVD occurred within both higher-level taxonomic groups (genus, family) and within functional groups.
  4. Other measures sometimes used to distinguish visitors from pollinators (visit duration, frequency, or feeding behaviour in flowers) did not prove to be suitable proxies.
  5. Distinguishing between ‘pollinators’ and ‘visitors’ is therefore crucial, and true ‘pollination networks’ should include SVD to reveal pollinator effectiveness (PE). Generating such networks, now underway, could avoid potential misinterpretations of the conservation values of flower visitors, and of possible extinction threats as modelled in existing networks.
公开日期2013-10-23
源URL[http://ir.xtbg.org.cn/handle/353005/4728]  
专题西双版纳热带植物园_文献共享
推荐引用方式
GB/T 7714		 Caroline King,Gavin Ballantyne,Pat G. Willmer*. Why flower visitation is a poor proxy for pollination: measuring single-visit pollen deposition, with implications for pollination networks and conservation[J]. Methods in Ecology and Evolution,2013,4(9):811-818.
APA Caroline King,Gavin Ballantyne,&Pat G. Willmer*.(2013).Why flower visitation is a poor proxy for pollination: measuring single-visit pollen deposition, with implications for pollination networks and conservation.Methods in Ecology and Evolution,4(9),811-818.
MLA Caroline King,et al."Why flower visitation is a poor proxy for pollination: measuring single-visit pollen deposition, with implications for pollination networks and conservation".Methods in Ecology and Evolution 4.9(2013):811-818.

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来源：西双版纳热带植物园

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