付ふ着ちゃく生せい物ぶつ

noun

periphyton

Technical term in ecology and limnology for the community of microorganisms, algae, and small animals attached to submerged surfaces in water.

• 河か川せんの石いしの表ひょう面めんには付ふ着ちゃく生せい物ぶつが多おおく見みられる。

  Periphyton is often found on the surfaces of stones in rivers.