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Response of a Wild Edible Plant to Human Disturbance: Harvesting Can Enhance the Subsequent Yield of Bamboo Shoots

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Title: Response of a Wild Edible Plant to Human Disturbance: Harvesting Can Enhance the Subsequent Yield of Bamboo Shoots
Authors: Katayama, Noboru Browse this author
Kishida, Osamu Browse this author
Sakai, Rei Browse this author
Hayakashi, Shintaro Browse this author
Miyoshi, Chikako Browse this author
Ito, Kinya Browse this author
Naniwa, Aiko Browse this author
Yamaguchi, Aya Browse this author
Wada, Katsunori Browse this author
Kowata, Shiro Browse this author
Koike, Yoshinobu Browse this author
Tsubakimoto, Katsuhiro Browse this author
Ohiwa, Kenichi Browse this author
Sato, Hirokazu Browse this author
Miyazaki, Toru Browse this author
Oiwa, Shinichi Browse this author
Oka, Tsubasa Browse this author
Kikuchi, Shinya Browse this author
Igarashi, Chikako Browse this author
Chiba, Shiho Browse this author
Akiyama, Yoko Browse this author
Takahashi, Hiroyuki Browse this author
Takagi, Kentaro Browse this author →KAKEN DB
Issue Date: 31-Dec-2015
Publisher: PLOS
Journal Title: PLoS ONE
Volume: 10
Issue: 12
Start Page: e0146228
Publisher DOI: 10.1371/journal.pone.0146228
Abstract: Wild edible plants, ecological foodstuffs obtained from forest ecosystems, grow in natural fields, and their productivity depends on their response to harvesting by humans. Addressing exactly how wild edible plants respond to harvesting is critical because this knowledge will provide insights into how to obtain effective and sustainable ecosystem services from these plants. We focused on bamboo shoots of Sasa kurilensis, a popular wild edible plant in Japan. We examined the effects of harvesting on bamboo shoot productivity by conducting an experimental manipulation of bamboo shoot harvesting. Twenty experimental plots were prepared in the Teshio Experimental Forest of Hokkaido University and were assigned into two groups: a harvest treatment, in which newly emerged edible bamboo shoots were harvested (n = 10); and a control treatment, in which bamboo shoots were maintained without harvesting (n = 10). In the first year of harvesting (2013), bamboo shoot productivities were examined twice; i.e., the productivity one day after harvesting and the subsequent post-harvest productivity (2-46 days after harvesting), and we observed no difference in productivity between treatments. This means that there was no difference in original bamboo shoot productivity between treatments, and that harvesting did not influence productivity in the initial year. In contrast, in the following year (2014), the number of bamboo shoots in the harvested plots was 2.4-fold greater than in the control plots. These results indicate that over-compensatory growth occurred in the harvested plots in the year following harvesting. Whereas previous research has emphasized the negative impact of harvesting, this study provides the first experimental evidence that harvesting can enhance the productivity of a wild edible plant. This suggests that exploiting compensatory growth, which really amounts to less of a decline in productivity, may be s a key for the effective use of wild edible plants.
Rights: http://creativecommons.org/licenses/by/4.0/
Type: article
URI: http://hdl.handle.net/2115/60726
Appears in Collections:北方生物圏フィールド科学センター (Field Science Center for Northern Biosphere) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 片山 昇

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