@article{oai:nagoya.repo.nii.ac.jp:00003870,
 author = {Suzuki, Yoshiaki and Matsubara, Teruo and Hoshino, Mitsuo and 松原, 輝男},
 journal = {Geoderma},
 month = {},
 note = {Feeding experiments were conducted quantitatively to examine the breakdown of mineral grains by earthworm, Eisenia feida, and larva of beetle, Protaetia lugubris insperata. Crushed and sieved test minerals of K-feldspar and/or quartz were mixed with artificial humus that contained no mineral grains. The mixture was fed to the soil animals in the plastic containers. After 1-, 4- and 7-day experimental durations, the ingested mineral grains were collected from the casts excreted by the soil animals in each container. Even 1 day after feeding of mineral grains, the casts of soil animals contained finer, rounded mineral grains that were not included in the initial prepared mineral samples.},
 pages = {131--142},
 title = {Breakdown of mineral grains by earthworms and beetle larvae},
 volume = {112},
 year = {2003}
}