| 摘要 |
PROBLEM TO BE SOLVED: To provide a modifier capable of improving a bottom sediment environment of a habitat of a bivalve into an environment suitable for inhabitation of the bivalve, without suppressing activity of the bivalve digging into sand such as a freshwater clam.SOLUTION: There is provided a bottom sediment modifier of a habitat of a bivalve digging into sand, which is a granular material containing shell powder of the bivalve digging into sand, and magnesium hydroxide powder and/or magnesium oxide powder.SELECTED DRAWING: None |
