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タイトル: | Factors affecting the genetic diversity of a perennial herb Viola grypoceras A. Gray var. grypoceras in urban fragmented forests |
著者: | Toma, Yuichi Imanishi, Junichi https://orcid.org/0000-0002-4901-0715 (unconfirmed) Yokogawa, Masashi Hashimoto, Hiroshi Imanishi, Ayumi Morimoto, Yukihiro Hatanaka, Yuki Isagi, Yuji https://orcid.org/0000-0002-9777-076X (unconfirmed) Shibata, Shozo |
著者名の別形: | 今西, 純一 |
キーワード: | Habitat fragmentation Urbanization Genetic variation Spatial variables SSR |
発行日: | Oct-2015 |
出版者: | Springer Netherlands |
誌名: | Landscape Ecology |
巻: | 30 |
号: | 8 |
開始ページ: | 1435 |
終了ページ: | 1447 |
抄録: | [Context]Habitat fragmentation is likely to have deleterious genetic consequences for plant populations. Although the genetic effects of fragmentation in plants have been investigated in various landscapes, such studies are scarce in urban landscapes where forests tend to be fragmented and have a complex internal structure. [Objectives]This study aimed to determine the factors, including patch and sub-patch level spatial factors, affecting the genetic diversity of a herbaceous species in urban fragmented forests. [Methods]We collected 30–39 leaf samples of Viola grypoceras A. Gray var. grypoceras, a perennial herbaceous species with short-distance seed dispersal, from 12 fragmented and 12 suburban forests each at Kyoto City, Japan, and analyzed the genetic diversity of this species by developing six simple sequence repeat markers. Field survey was conducted to collect demographic and spatial data. [Results]There was no significant difference in allelic richness between the urban fragmented and suburban forests. However, statistical analysis revealed that the area of vegetation, distribution pattern of populations in a forest, and average distance between nearest populations affected the genetic diversity of this species in urban fragmented forests. [Conclusion]Although V. grypoceras has traits that allow it to tolerate fragmentation, such as self-pollination and seed bank-formation ability, pure loss of habitat and reduced fragment size might have deleterious effects on this species, and these effects might become more apparent if fragmentation continues to proceed in the future. |
著作権等: | The final publication is available at Springer via http://dx.doi.org/10.1007/s10980-015-0197-1. 許諾条件により本文ファイルは2016-11-01に公開. This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 |
URI: | http://hdl.handle.net/2433/199850 |
DOI(出版社版): | 10.1007/s10980-015-0197-1 |
出現コレクション: | 学術雑誌掲載論文等 |
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