Sacha wrote in :

Two of ours are in full sunlight, with one getting some shade in the
late afternoon. The third is in a fair amount of shade. One of those
in full sun is the oldest and is always seething with frogs but all of
them have spawn in them. We took some spawn from the old pond to put
into the newest, shadier one, about two or three years ago and we have
spawn there every year now.

Okay - thanks... so I'll surmise that it doesn't make much difference. I'll
aim for dappled shade on two of my mini-ponds, and the new one I'm planning
will be in the permanent shadow of a high wall.

Al