Experiment 1 - Results
Sorry its taken me this long - lots of issues going on at once on my end. I can run the statistics if need be to try and determine significance - I'm looking up how to do it, since there are many complex factors, such as lost worms, environmental factors, etc. However, I think the trend is clear - there's some benefit with the most heavily-treated group, at least early on. Later, the effects of contamination make definitive determinations impossible. Replication with more redundancy and better control over environmental conditions is in order:
http://www.nasonschooler.com/research/docs/exp1.pdf
Nason