摘要: The results of these studies indicate that the first diatom flora developed at 13-meter level. 12 meters increased. At 11- and 9-meter levels lake became increasingly eutrophic. Both plankton benthic forms were present. 8- 7-meter was in a transitional stage from to bog conditions. From 6 surface conditions
sci-hub.se 参考文章(1)
E. S. Deevey, Additional pollen analyses from southern New England American Journal of Science. ,vol. 241, pp. 717- 752 ,(1943) , 10.2475/AJS.241.12.717