Now we know a little more of the story. Thanks for finding that bit of info. I forgot about these clams floating when dead. Limiting disolved oxygen conditions of the sediments will depend primarily on the tolerance levels of the species and condition or features of the sediments. Water depth and pond morpology will also have an influnce. Numerous variables. Any info on that lower DO tolerance topic available? Surface or subsurface sediments often have DO levels droping to 0-1ppm - depending.
Presence of weak swimming juveniles could result in them colonizing pond intake structures depending more variables.
Last edited by Bill Cody; 04/19/09 09:17 PM.
