Leaves and needles from deciduous and coniferous trees play a major role in the formation of soil in their respective forests and thus help to determine the type of life that can successfully live there. Because of the known effects of leaf and needle litter on larger invertebrate life, earthworms, millipedes, etc., it was decided to experiment with infusions of paramecia derived from both leaves and needles to see if they were similarly affected.
Iowa Science Teachers' Journal
© Copyright 1971 by the Iowa Academy of Science
Bley, M.; Frenchick, B.; and Smith, K.
"Paramecia Affected by Leaf Extracts,"
Iowa Science Teachers Journal: Vol. 9
, Article 13.
Available at: https://scholarworks.uni.edu/istj/vol9/iss1/13