Assessing context-dependent survival of Quercus glauca seeds in a humid maritime woodland

Makoto Yoko-o, Mutsunori Tokeshi

研究成果: ジャーナルへの寄稿記事

3 引用 (Scopus)

抄録

Whilst consumption by rodents is often invoked as a major mortality factor for large-seed species of trees, its relative importance compared with other mortality factors is poorly known. We investigated experimentally the fate of post-dispersal seeds of Quercus glauca under different understorey environments (areas covered by (i) a pteridophyte Pyrrosia lingua, (ii) a ground-vine, Trachelospermum asiaticum and (iii) no vegetation) from the germination stage to seedling emergence and establishment stages in humid maritime woodland. We employed a pair of caged and uncaged treatments to evaluate the impact of seed removal/predation by rodents, which allowed us to separate seed removal/predation mortality from mortality due to other factors. Effects by rodents were greater in the no-understorey habitat than in the Pyrrosia and Trachelospermum habitats at early stages of development, whilst non-rodent-associated mortality was relatively more important towards the seedling establishment stages in all habitats. In the absence of predation/removal by rodents (i. e. the caged treatment), more seedlings survived in the no-understorey habitat whilst seedlings were significantly taller in the Pyrrosia habitat. In contrast, no significant difference was observed in either seed/seedling survivorship or seedling height amongst habitats where seeds/seedlings were exposed to rodent predation/removal. Overall, this study in a humid maritime woodland has revealed the temporally variable influence of mortality factors and the context-dependent survival of oak seeds/seedlings, making a contrast to observations in drier woodlands; in the no-understorey environment predation/removal effect was heavier but later survivorship was higher, whilst in vegetated environments, predation/removal was reduced but survivorship was not high.

元の言語英語
ページ(範囲)143-153
ページ数11
ジャーナルPlant Ecology
213
発行部数1
DOI
出版物ステータス出版済み - 1 1 2012

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Quercus glauca
woodlands
woodland
predation
rodent
seedling
Pyrrosia
seed
mortality
understory
seedlings
rodents
habitat
seeds
survivorship
Trachelospermum
habitats
seedling establishment
survival rate
pteridophyte

All Science Journal Classification (ASJC) codes

  • Ecology
  • Plant Science

これを引用

Assessing context-dependent survival of Quercus glauca seeds in a humid maritime woodland. / Yoko-o, Makoto; Tokeshi, Mutsunori.

:: Plant Ecology, 巻 213, 番号 1, 01.01.2012, p. 143-153.

研究成果: ジャーナルへの寄稿記事

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