The topological differences between visitation and pollen transport networks: a comparison in species rich communities of the Himalaya-Hengduan Mountains
Zhao, Yan-Hui1; Lazaro, Amparo3; Ren, Zong-Xin1; Zhou, Wei4; Li, Hai-Dong1; Tao, Zhi-Bin1,2; Xu, Kun5; Wu, Zhi-Kun5; Wolfe, Lorne M.1; Li, De-Zhu4; Wang, Hong1
Corresponding AuthorWang, Hong(wanghong@mail.kib.ac.cn)
2019-04-01
Source PublicationOIKOS
ISSN0030-1299
Volume128Issue:4Pages:551-562
AbstractPollination networks are usually constructed and assessed by direct field observations which commonly assume that all flower visitors are true pollinators. However, this assumption is often invalid and the use of data based on mere visitors to flowers may lead to a misunderstanding of intrinsic pollination networks. Here, using a large dataset by both sampling floral visitors and analyzing their pollen loads, we constructed 32 networks pairs (visitation versus pollen transport) across one flowering season at four elevation sites in the Himalaya-Hengduan Mountains region. Pollen analysis was conducted to determine which flower visitors acted as potential pollinators (pollen vectors) or as cheaters (those not carrying pollen of the visited plants). We tested whether there were topological differences between visitation and pollen transport networks and whether different taxonomic groups of insect visitors differed in their ability to carry pollen of the visited plants. Our results indicated that there was a significantly higher degree of specialization at both the network and species levels in the pollen transport networks in contrast to the visitation networks. Modularity was lower but nestedness was higher in the visitation networks compared to the pollen transport networks. All the cheaters were identified as peripheral species and most of them contributed positively to the nested structure. This may explain in part the differences in modularity and nestedness between the two network types. Bees carried the highest proportion of pollen of the visited plants. This was followed by Coleoptera, other Hymenoptera and Diptera. Lepidoptera carried the lowest proportion of pollen of the visited plants. Our study shows that the construction of pollen transport networks could provide a more in-depth understanding of plant-pollinator interactions. Moreover, it suggests that detecting and removing cheater interactions when studying the topology of other mutualistic networks might be also important.
Keywordcheater flower visitor modularity mutualistic network nestedness pollen load analysis
DOI10.1111/oik.05262
Indexed BySCI
Language英语
WOS IDWOS:000462902200009
Citation statistics
Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/67707
Collection中国科学院东亚植物多样性与生物地理学重点实验室
Corresponding AuthorWang, Hong
Affiliation1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Divers & Biogeog East Asia, CN-650201 Kunming, Yunnan, Peoples R China
2.Univ Chinese Acad Sci, Kunming Coll Life Sci, Kunming, Yunnan, Peoples R China
3.Mediterranean Inst Adv Studies, Esporles, Spain
4.Chinese Acad Sci, Kunming Inst Bot, Germplasm Bank Wild Species, Kunming, Yunnan, Peoples R China
5.Chinese Acad Sci, Kunming Inst Bot, Lijiang Forest Ecosyst Res Stn, Kunming, Yunnan, Peoples R China
Recommended Citation
GB/T 7714
Zhao, Yan-Hui,Lazaro, Amparo,Ren, Zong-Xin,et al. The topological differences between visitation and pollen transport networks: a comparison in species rich communities of the Himalaya-Hengduan Mountains[J]. OIKOS,2019,128(4):551-562.
APA Zhao, Yan-Hui.,Lazaro, Amparo.,Ren, Zong-Xin.,Zhou, Wei.,Li, Hai-Dong.,...&Wang, Hong.(2019).The topological differences between visitation and pollen transport networks: a comparison in species rich communities of the Himalaya-Hengduan Mountains.OIKOS,128(4),551-562.
MLA Zhao, Yan-Hui,et al."The topological differences between visitation and pollen transport networks: a comparison in species rich communities of the Himalaya-Hengduan Mountains".OIKOS 128.4(2019):551-562.
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