Header

UZH-Logo

Maintenance Infos

The openness of a flower and its number of flower-visitor species


Olesen, Jens M; Dupont, Yoko L; Ehlers, Bodil K; Hansen, Dennis M (2007). The openness of a flower and its number of flower-visitor species. Taxon, 56(3):729-736.

Abstract

Using a sample of 1,403 flowering plant species, we tested the hypothesis that flower openness and flower-visitor aeneralization level of a plant species correlate positively. The "flower-visitor generalization level" L. of a flo, vering plant species n, here defined as number of flower-visiting animal species attracted to the flowers of n in a aiven study site, varied enormously among plant species. Its frequency distribution was extremely skewed. Within a study site, L also increased with number of flower-visitor species A. In order to correct for this, ve expressed L relatively, as the proportion of the total flower-visitor fauna in a study site that visited a gyiv-en plant species (relative generalization level, L/A). We listed the top-10 most generalized species (both according to L and LIA) in the "world", i.e., out of our sample of 1,403 plant species. Flower openness is defined as accessibilitv to the interior of the flower. We placed the blossom classes of Facgri & van der Pijl along a aradient, albeit not very well defined, of decreasing flower openness (dish-bowl, bell-funnel, head-brush, tube. aullet. flag) and tested for any relationship to their generalization level. The classes differed slightly but significantly in their level of L/A. Tube, bell-funnel, and dish-bowl had the highest generalization level and flaLy. uullet. and head-brush the lowest. Thus, flower openness and generalization level were not correlated. We discuss other factors influencing generalization level such as accessibility to pollen and nectar, morphology and behavior of visitor, and species diversity of the different functional types of visitors.

Abstract

Using a sample of 1,403 flowering plant species, we tested the hypothesis that flower openness and flower-visitor aeneralization level of a plant species correlate positively. The "flower-visitor generalization level" L. of a flo, vering plant species n, here defined as number of flower-visiting animal species attracted to the flowers of n in a aiven study site, varied enormously among plant species. Its frequency distribution was extremely skewed. Within a study site, L also increased with number of flower-visitor species A. In order to correct for this, ve expressed L relatively, as the proportion of the total flower-visitor fauna in a study site that visited a gyiv-en plant species (relative generalization level, L/A). We listed the top-10 most generalized species (both according to L and LIA) in the "world", i.e., out of our sample of 1,403 plant species. Flower openness is defined as accessibilitv to the interior of the flower. We placed the blossom classes of Facgri & van der Pijl along a aradient, albeit not very well defined, of decreasing flower openness (dish-bowl, bell-funnel, head-brush, tube. aullet. flag) and tested for any relationship to their generalization level. The classes differed slightly but significantly in their level of L/A. Tube, bell-funnel, and dish-bowl had the highest generalization level and flaLy. uullet. and head-brush the lowest. Thus, flower openness and generalization level were not correlated. We discuss other factors influencing generalization level such as accessibility to pollen and nectar, morphology and behavior of visitor, and species diversity of the different functional types of visitors.

Statistics

Citations

14 citations in Web of Science®
18 citations in Scopus®
Google Scholar™

Altmetrics

Downloads

11 downloads since deposited on 18 Jul 2012
0 downloads since 12 months
Detailed statistics

Additional indexing

Item Type:Journal Article, not refereed, original work
Communities & Collections:07 Faculty of Science > Institute of Evolutionary Biology and Environmental Studies
Dewey Decimal Classification:570 Life sciences; biology
590 Animals (Zoology)
Language:English
Date:2007
Deposited On:18 Jul 2012 13:22
Last Modified:05 Apr 2016 15:44
Publisher:International Association for Plant Taxonomy
ISSN:0040-0262
Publisher DOI:https://doi.org/10.2307/25065857
Other Identification Number:IDS Number: 207JM

Download

Preview Icon on Download
Filetype: PDF - Registered users only
Size: 1MB
View at publisher

TrendTerms

TrendTerms displays relevant terms of the abstract of this publication and related documents on a map. The terms and their relations were extracted from ZORA using word statistics. Their timelines are taken from ZORA as well. The bubble size of a term is proportional to the number of documents where the term occurs. Red, orange, yellow and green colors are used for terms that occur in the current document; red indicates high interlinkedness of a term with other terms, orange, yellow and green decreasing interlinkedness. Blue is used for terms that have a relation with the terms in this document, but occur in other documents.
You can navigate and zoom the map. Mouse-hovering a term displays its timeline, clicking it yields the associated documents.

Author Collaborations