General question to all:
This question is open to anyone with information concerning the daily
vertical movements of earthworms. Specifically I am interested in how long
an individual may spend in e.g., 0-5 cm from the surface, 5-10 cm from the
surface, 10-15 cm from the surface. I am aware that moisture,
temperature, food resources all play a factor in the vertical distribution,
however, are there any studies which examined this and present a
quantifed data under defined experimental conditions? If studies can not
be found in the primary literature, how about generalized comments in the
literature and earthworm biology books? The purpose of these questions is
to assess how daily vertical movements may influence exposure to
potentially harmful chemicals (pesticides) which are highest in soil close to
the surface. Any comments are appreciated.
Thanks in advance for your help
Steve Levine
Department of Veterinary Science
Penn State University
University Park, 16802
email: SLL13 at psu.edu
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