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Gender variation of Dryas octopetala along snowmelt and latitudinal gradients in the Subarctic and the High Arctic
https://doi.org/10.15094/00006134
https://doi.org/10.15094/00006134c2d2e961-e07d-473e-8edc-bcb288c400e9
名前 / ファイル | ライセンス | アクション |
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KJ00000045378 (1.6 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 1999-02-01 | |||||
タイトル | ||||||
タイトル | Gender variation of Dryas octopetala along snowmelt and latitudinal gradients in the Subarctic and the High Arctic | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Arctic | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Dryas octopetala | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | femaleness | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | sex allocation | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | snowmelt | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | departmental bulletin paper | |||||
ID登録 | ||||||
ID登録 | 10.15094/00006134 | |||||
ID登録タイプ | JaLC | |||||
ページ属性 | ||||||
内容記述タイプ | Other | |||||
内容記述 | P(論文) | |||||
著者名(英) |
Wada,Naoya
× Wada,Naoya× Kudo,Gaku× Kojima,Satoru |
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著者所属(英) | ||||||
en | ||||||
Department of Biosphere Science, Faculty of Science,Toyama University/Graduate School of Environmental Earth Science, Hokkaido University/Department of Biosphere Science, Faculty of Science,Toyama University | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | We describe variations of floral traits of Dryas octopetala L. along a snowmelt gradient within and among three sites : 1) the Subarctic Latnjajaure in northernmost Sweden, 2) the High Arctic Longyearbyen and 3) Ny-Alesund, Svalbard in Norway, also High Arctic. Dryas octopetala had two types of flowers, hermaphrodite flowers and male flowers, lacking any gynoecium. The frequency of male flowers was higher in late snow-melt habitats (i. e. late flowering populations) both at Latnjajaure and Ny-Alesund. Male flowers were significantly lighter in dry weight than hermaphrodite flowers; the difference was larger in the High Arctic than in the Subarctic, suggesting a higher resource limitation in male flowers in the High Arctic. Flower weight also varied among the three sites, and showed a significant difference along the latitudinal gradient both in hermaphrodite and male flowers. In the hermaphrodite flowers, the gynoecium dry weight differed among the three sites, being significantly heavier at Latnjajaure than at Longyearbyen and Ny-Alesund. As a result, the "femaleness" (gynoecium weight/androecium+gynoecium weight) showed significantly higher values at Latnjajaure than at Longyearbyen and Ny-Alesund. Thus, the floral allocation to female function in D. octopetala decreases with an increase in latitude from the Subarctic to the High Arctic. Gender variation of flowers is a size-dependent phenomenon; a positive correlation between flower size and femaleness was observed within each site. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA11327019 | |||||
書誌情報 |
Polar bioscience 巻 12, p. 87-99, 発行日 1999-02 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |