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＜departmental bulletin paper＞
Spatial arrangement of the areas to supply the condition for fire fly ecosystem

Creator
Creator Name
境, 裕子
Sakai, Hiroko
Affiliation
Affiliation Name
九州大学農学部林学科砂防学講座
Soil and Water Conservation Laboratory, Faculty of Agriculture Kyushu University
Author PID
L000981
Creator Name
丸谷, 知己
Marutani, Tomomi
Affiliation
Affiliation Name
九州大学農学部林学科砂防学講座
Soil and Water Conservation Laboratory, Faculty of Agriculture Kyushu University
Creator Name
伊藤, 哲
Ito, Satoshi
Affiliation
Affiliation Name
九州大学農学部林学科砂防学講座
Soil and Water Conservation Laboratory, Faculty of Agriculture Kyushu University
Language
Japanese
Publisher
九州大學農學部
Faculty of Agriculture, Kyushu University
Date
1993-03
Source Title
Science bulletin of the Faculty of Agriculture, Kyushu University
Vol
47
Issue
3/4
First Page
213
Last Page
222
Publication Type
Version of Record
Access Rights
open access
JaLC DOI
https://doi.org/10.15017/23445
Related DOI
九州大學農學部學藝雜誌 || 47(3/4) || p213-222
Science bulletin of the Faculty of Agriculture, Kyushu University || 47(3/4) || p213-222
http://www.agr.kyushu-u.ac.jp/
Related URI
九州大學農學部學藝雜誌 || 47(3/4) || p213-222
Science bulletin of the Faculty of Agriculture, Kyushu University || 47(3/4) || p213-222
http://www.agr.kyushu-u.ac.jp/
Relation
九州大學農學部學藝雜誌 || 47(3/4) || p213-222
Science bulletin of the Faculty of Agriculture, Kyushu University || 47(3/4) || p213-222
http://www.agr.kyushu-u.ac.jp/

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Details

Record ID
23445
Peer-Reviewed
Unrefereed
Subject Terms
水辺生態系
ゲンジボタル
河川
空間配置
生息環境
waterside ecosystem
fire fly
river
spatial arrangement
habitat
ISSN
0368-6264
NCID
AN0005519X
Notes
A purpose of this study is to clear the spatial arrangement of the areas to supply the conditions for fire fly ecosystem. Conditions for catching melanian snail throughout larva life in current and those of flying throughout adult in the air were analyzed at Kawabe river in Kumamoto. Numbers of rocks (boulder and cobblestone), current velocity and water depth in the river and vegetation on the bank were measured. Numbers of melanian snails in the river and these of adults in the air were observed. Results are as follows. Area of larva stands is in need of conditions under 10 m/sec in current velocity, 60 cm in depth and above 140/m^2 in numbers of rocks. Fire fly, laying eggs, larva, pupa and adult need not only spots under these conditions but also areas under them. In addition to supply some areas consisting of the conditions for life, it is important to keep spatial arrangement to these areas with linking each other in the river, bank and air.
河川地形と河川水理とによって様々な条件が形成されるが, それらの条件ごとに生息の場が成立し, 流れの方向に沿って場が連繋することによって, ホタルの生活環は成立していると考えられる. 砂防構造物のあり方は, 生物の生活環を維持する生息の場にずれを生じさせる一方で, 河川空間を一定の地形および水理条件に保つ役割があり, 場の安定性を導いているとも考えられる. 今後は, ホタル生活環の各段階での生息に必要な場の大きさと場が連繋する際のずれの大きさとを検討し, 河川空間の中に砂防構造物を組み込むための方法論を開発するつもりである. それによって, 河川動態の中での水辺生態系の維持と人間活動との共存が可能となるであろう.
Created Date 2012.08.02
Modified Date 2022.11.11

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