Walt I quoted your comment and it says "studies". Earlier several AFS studies on TShad on this point were discussed - http://www.pondboss.com/forums/ubbthreads.php?ubb=showflat&Number=177599&fpart=1. TShad and GShad are entirely different in many ways including their effect on population dynamics. This thread was about Big Pond's question on TShad not GShad . Your comments on GShad only confuse the matter.

Post the study and lets see what is says.