Spatial dynamics of stream fish populations at a stream network scale in relation to patch mosaic structure of riparian forests
| Project/Area Number |
26450197
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Forest science
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| Research Institution | Ehime University |
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Principal Investigator |
Inoue Mikio 愛媛大学, 理工学研究科(理学系), 教授 (10294787)
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| Research Collaborator |
SUEKUNI Senri
FUJITA Tomonori
FUKE Yawara
OKUYA Takahiro
GOTO Shota
ABE Hirofumi
ICHIMORI Daisuke
SHINOHARA Takuma
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | 渓流魚 / アマゴ / 渓畔林 / 人工林 / 移動分散 / イワナ / 分断化 |
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| Outline of Final Research Achievements |
This study examined spatial dynamics of salmonid populations at a whole stream network scale in relation to patch mosaic structure of riparian forests (natural broadleaved forests / conifer plantation). The results illustrated that the distribution of spawning sites was highly heterogeneous, but that of young-of-the-year (YOY) fish became gradually homogenized during summer, owing to their density-dependent dispersal. The results also suggested that, in this process, natural forest patches functioned as a habitat where YOY fish attained higher growth rates.
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Report
(4 results)
Research Products
(8 results)
