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NealBBrown's avatar

To Try At Home

Make an earthworm sample site in your own backyard. Begin by making a 50cm square frame, to provide a standard sized area to sample. Choose a sample location and lay the frame down. Mix two ounces of mustard powder with a gallon of water and shake well. Clear the top level of loose leaf litter within the frame. Pour half of this mixture slowly and evenly into the frame, allowing it to soak into the ground as needed. Now, watch to see if earthworms surface and use forceps to deposit them into a vial containing 70 percent to 90 percent isopropyl alcohol.

Repeat this process with two more sites at the same location to sample diverse places in close proximity. All specimens from one location can be kept in the same vial. In the center of these the sample sites, take a GPS reading and record the coordinates, as well as the extent (radius of the sample circle) and the elevation. Weather, location description, sample method (mustard extraction), date, time and the names of those who collected the specimens should also be recorded in a notebook and on a label with archival ink. Place this in the vial with the earthworms.

Fairbanks Earth worms

http://www.newsminer.com/features/sundays/community_features/student-s-work-leads-to-interior-alaska-earthworm-discovery/article_af00dcbe-9d0a-11e8-90f4-23903c8e2f69.html

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