61. Short-lived life forms - Mayflies only live a few days. How could they reproduce in a barge in a non-riparian environment?
Short lived life forms may be a good point, but mayflies may not be a good example. Although the adult mayflies emerge and are only active for a couple days then die, the juveniles are active for a pretty long time in rivers and streams up to that point.
Generally though, juvenile mayflies do require pretty clean, freshwater environment which would surely be difficult to produce on a barge. Mayflies are a classic indicator species for when stream quality is poor.
Maybe come up with a better example of a shirt lived species for point #61?
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