Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1111/j.0906-7590.2006.04546.x |
Structure of a plant-pollinator network on a pahoehoe lava desert of the Galapagos Islands | |
Philipp, Marianne; Bocher, Jens; Siegismund, Hans R.; Nielsen, Lene R. | |
通讯作者 | Philipp, Marianne |
来源期刊 | ECOGRAPHY
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ISSN | 0906-7590 |
出版年 | 2006 |
卷号 | 29期号:4页码:531-540 |
英文摘要 | Plant-pollinator interactions are important for the evolution and survival of the species involved. Plant-pollinator networks on oceanic islands are often small in size and as a consequence the connectance is high suggesting a substantial generalisation level. Further, linkage level for insular plants is shown to be lower than on mainland. The present study investigates a plant-pollinator network on the Galdpagos Islands that is unique because of its very small size. We recorded pollinator visits to plant species as well as pollen grains on insect bodies. The combination of these data increased the observed number of interactions. The values for connectance and linkage level for plants were found to be consistent with similar values found in other network studies. There were no relation between the abundance of plant species and the number of pollinating species. The dominating pollinator species was the Galdpagos carpenter bee Xylocopa darwini. Specimens of the shorthorned grasshopper Halmenus cuspidatus turned out to carry pollen from five plant species out of twelve and are probably functioning as pollinator. Bagging experiments revealed dependency on insect visits for a high seed set for most of the plant species, but only one species Plumbago scandens seemed to possess a pollen limited seed set. The network showed an asymmetric pattern of number of interactions per species with a few species having several interactions and many species a few. This pattern is supposed to result in a rather robust community, but is also fairly sensitive if the dominant species are threatened. The high connectance value found could, however, counteract this vulnerability. |
类型 | Article |
语种 | 英语 |
国家 | Denmark |
收录类别 | SCI-E |
WOS记录号 | WOS:000240733600008 |
WOS关键词 | MUTUALISTIC NETWORKS ; SCALESIA-AFFINIS ; FOOD WEBS ; ASTERACEAE ; CONNECTANCE ; PATTERNS ; LIZARDS |
WOS类目 | Biodiversity Conservation ; Ecology |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/151216 |
作者单位 | (1)Univ Copenhagen, Inst Biol, DK-2100 Copenhagen O, Denmark;(2)Nat Hist Museum Denmark, DK-2100 Copenhagen, Denmark |
推荐引用方式 GB/T 7714 | Philipp, Marianne,Bocher, Jens,Siegismund, Hans R.,et al. Structure of a plant-pollinator network on a pahoehoe lava desert of the Galapagos Islands[J],2006,29(4):531-540. |
APA | Philipp, Marianne,Bocher, Jens,Siegismund, Hans R.,&Nielsen, Lene R..(2006).Structure of a plant-pollinator network on a pahoehoe lava desert of the Galapagos Islands.ECOGRAPHY,29(4),531-540. |
MLA | Philipp, Marianne,et al."Structure of a plant-pollinator network on a pahoehoe lava desert of the Galapagos Islands".ECOGRAPHY 29.4(2006):531-540. |
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