湛水土壌系におけるイトミミズ類(BRANCHIURA SOWERBYI および LIMNODRILUS SOCIALIS)の作用
1977 年 27 巻 3 号 p. 163-170
詳細
1977 年 27 巻 3 号 p. 163-170
KIKUCHI, Eisuke (Biol. Inst., Fac. Sci., Tohoku Univ.), FURUSAKA, Choseki (Inst. Agr. Res. Tohoku Univ.) & KURIHARA, Yasushi (Biol. Inst., Fac. Sci., Tohoku Univ.). 1900. Effects of tubificids (Branchiura sowerbyi and Limnodrilus socialis) on the nature of a submerged soil ecosystem. Jap. J. Ecol., 27 : 163-170. Measurements of the chemical and biological nature of submerged paddy soil in vitro with and without tubificids revealed that the presence of tubificids inhibited the growth of weeds and increased the frequency of appearance of Moina sp., and that the presence of weeds led to a increase in the Eh of soil, a decrease in the pH and a decrease in the activity of the soil's biological and nonbiological uptake of O_2. Examination of the changes of biotic and abiotic factors by artificial mixing of the soil led to the supposition that the action of tubificids is similar to physical mixing of the soil.
