bei Google ScholarTitelangaben
Wolff, Doris ; Meve, Ulrich ; Liede-Schumann, Sigrid:
Pollination ecology of Ecuadorian Asclepiadoideae (Apocynaceae) : how generalized are morphologically specialized flowers?
In: Basic and Applied Ecology.
Bd. 9
(2008)
Heft 1
.
- S. 24-34.
ISSN 1439-1791
DOI: https://doi.org/10.1016/j.baae.2007.06.013
Abstract
This paper studies phenology and pollination ecology of an assemblage of nine small-flowered species of Asclepiadoideae–Asclepiadeae in a southern Ecuadorian mountain forest. These observations were augmented by laboratory studies of floral traits including scanning electron microscopy. Supported by multidimensional scaling analysis, three distinct pollination systems were identified: (a) pollination by small flies (Orthosia, Scyphostelma), (b) pollination by small bees and flies (Ditassa), and (c) pollination unspecialized ("Cynanchum",Jobinia,Oxypetalum). Although numerous floral visitors were observed in the field, pollinaria were carried by only seveninsect species. The average pollinaria removal rate of all species was low with 0.3270.13%, and still lower for thepollinia insertion rate with 0.1370.07%. The ratio of inserted pollinia to removed pollinaria was comparatively highwith an average of 42.7722.3%. If an insect achieved pollinia transfer, it did so very effectively. The complex floralmorphology of the Asclepiadoideae has often been interpreted as a general trend toward specialization, but ourobservations indicate that the flowers are specialized functionally rather than ecologically.
Weitere Angaben
| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Zusätzliche Informationen: | BAYCEER56531 |
| Institutionen der Universität: | Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Biologie > Lehrstuhl Pflanzensystematik Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Biologie > Lehrstuhl Pflanzensystematik > Lehrstuhl Pflanzensystematik - Univ.-Prof. Dr. Sigrid Liede-Schumann Forschungseinrichtungen > Forschungszentren > Bayreuther Zentrum für Ökologie und Umweltforschung - BayCEER Fakultäten Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Biologie Forschungseinrichtungen Forschungseinrichtungen > Forschungszentren |
| Titel an der UBT entstanden: | Ja |
| Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik |
| Eingestellt am: | 14 Jul 2015 06:21 |
| Letzte Änderung: | 14 Jul 2015 06:21 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/16358 |