@article{oai:niigata-u.repo.nii.ac.jp:00006874,
 author = {Yasui, Satoshi and Kobayashi, Iwao},
 journal = {Science reports of Niigata University. (Geology), Science reports of Niigata University. (Geology)},
 month = {Mar},
 note = {Diatom floras of the Shorijo 10-2 core in the Shiotsugata Lagoon, northern Echigo Plain, central Japan are analyzed in order to elucidate the Pleistocene-Holocene diatom floral changes. Diatoms of 243 species belonging to 53 genera are identified. The diatom floras in this core are divided into seven divisions, D-1 to D-7. The D-1 to D-6 are in the Holocene and the D-7 is in the Pleistocene. The D-7 is dominant in fresh water species. The D-6 is a mixed flora of marine and fresh water species. The D-5 is characterized by the abundant existence of Cyclotella caspia as an indicator of brackish lake with low salinity. The D-4 is characterized by the appearance of several kinds of planktonic species in marine, brackish and fresh water. The D-3 consists mainly of a fresh water lake species Aulacoseira granulate. The D-2 and D-1consist mainly of fresh water species such as Aulacoseira ambigua and Achnanthes spp..},
 pages = {47--81},
 title = {Pleistocene-Holocene diatom floras of the Shiotsugata Lagoon in the Echigo Plain, central Japan},
 volume = {16},
 year = {2001}
}