<a href=showthread.php?s=&postid=10623057#post10623057 target=_blank>Originally posted</a> by greenbean36191
There is a big crisis in coral taxonomy right now. Historically, it's almost all been based on skeletal structure, but now we're realizing that that can be fairly plastic. There is a lot of talk about how what we thought were several hundred distinct species may actually just be a handful of morphologically plastic species. The answer would have a major impact on how the effort of reef conservation is divided.
You could take frags of corals from common parent colonies and grow them out under different flow, light, or nutrient regimes (I would go with flow) and then do a statistical analysis of the variation between all the characters used to identify that genus (Acropora and Montipora would be good choices). You could determine how many of the characters used for identification are consistent and how many are too variable to be of use and use that to make an assessment of the utility of morphological taxonomy in corals.