While I think it is common knowledge, BG spawn pretty well with no help. I have a clay bottom pond, and the BG seem to reproduce just fine. Has anyone had trouble with BG not spawning in their pond?
A question is how to measure "spawn pretty well" ? Year class size is often hard to measure until much later. If you have a pond with plenty of BG of all sizes over time then "pretty well" is ok. If you are forage short and need more BG or have spotty year class sizes then a 20 % increase in BG egg survival to swim up is fantastic. Zero to low year classes in LMB and BG are not common but do happen and that and low forage both cause big issues for management. IMO do what is needed to achieve "pretty well"
for the pond in question.
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