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Pill bugs (Porcellio) are terrestrial invertebrates. How do you create an acidic or basic environment for a terrestrial animal?

Pill bugs prefer moist, dark places. Any place that contains water, should be slightly acidic as the carbon dioxide in the air forms carbonic acid with water.

Before anyone can comment they need to see your experiment, sample size, control (pure water is acidic because of what I mention above), you way of testing the pH and how you standardized it, how you gave the animals a choice, etc.

"a good amount of people" isn't science. What are the references in the scientific literature? You did research this topic using primary sources, right?

Isis.... while one examine animal habit, one must be careful to no longer anthropomorphise what you're seeing. the only way you will discover out if those isopods "choose" or "like" some thing, is to get them to talk. the final we are in a position to do interior the interim, is to work out if there are mechanisms that effect habit. Sowbugs/pill bugs do no longer think of. Environmental situations effect rapidly their stream varieties. case in point, if I place isopods in diverse relative humidities, the better the humidity, the fewer stream I see interior the animals. This explains why those animals tend to be discovered decrease than damp rocks. The extreme humidity reduces their stream...for that reason effectively trapping them decrease than a difficulty which seems, is favorable to them. i'd think of that gentle/darkish has the comparable result. gentle will boost stream, darkish retards stream/activity. there is not any "prefering" happening right here.