|
Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Environmental Science / Faculty of Environmental Earth Science >
Peer-reviewed Journal Articles, etc >
Relationship between thallus size and apothecium density in two alpine umbilicate lichens
| Title: | Relationship between thallus size and apothecium density in two alpine umbilicate lichens |
| Authors: | Shimizu, Akira Browse this author | | Kubo, Takuya Browse this author |
| Keywords: | apothecia | | aspect | | Bayesian modelling | | sky openness | | thallus area |
| Issue Date: | May-2009 |
| Publisher: | Cambridge University Press |
| Journal Title: | The Lichenologist |
| Volume: | 41 |
| Issue: | 03 |
| Start Page: | 285 |
| End Page: | 297 |
| Publisher DOI: | 10.1017/S0024282909007762 |
| Abstract: | The relationship between thallus size and apothecium density was studied in two umbilicate lichens, Umbilicaria cylindrica and Lasallia pensylvanica, growing in alpine rock surface environments. Samples of the two lichens were collected from the Daisetsuzan National Park, northern Japan. U. cylindrica produced many smaller apothecia, whereas L. pensylvanica had larger but fewer apothecia. To explain the differences in reproductive efforts between these two species, we analyzed the lichen data using a hierarchical Bayesian model in which the density of apothecia for each species was predicted by the thallus area and the sky openness index (SOI). The Bayesian model including unobservable effects, i.e., the random effects of individual lichens and rock faces, predicted that the apothecium densities for both species increased as the thallus area increased. The estimated coefficient of thallus area to apothecium density for U. cylindrica was larger than that for L. pensylvanica. We also detected a probably positive relationship between SOI and apothecium density for U. cylindrica, whereas none was detected for L. pensylvanica. |
| Rights: | Copyright © 2009 British Lichen Society |
| Relation: | http://journals.cambridge.org/action/displayJournal?jid=LIC |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/38821 |
| Appears in Collections: | 環境科学院・地球環境科学研究院 (Graduate School of Environmental Science / Faculty of Environmental Earth Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
|
Submitter: 久保 拓弥
|
