科学的調査028

東京大学三方湖実習

感想

地点（相田付近）

聞き取り内容

＜環境の特徴＞
一部コンクリート護岸
・川幅：2-3m
・優占する植生：ツルヨシ
・水深：0.2m
・底質：砂と礫

＜採集方法＞
タモ網、投網

＜生物相＞
トウヨシノボリ、アユ、オイカワ、ドジョウ、カワムツ、ヤゴ（ヤンマ、ハグロ）、ヌマチチブ、カマツカ、カジカ

＜コメント＞
・種組成は大きく変化したが，環境の変化を示すような種はみられなかった。
　→ 河床の環境はあまり変化せず、多様性は維持された。
　⇒河岸・水深の変化に種組成は影響を受けたと考えられる。
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地図を読み込み中...

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