Herpetologist Elke Wind gave a fascinating presentation at our AGM on “Frogs, Freshwater Ponds, Fragmentation, and Fish.” She talked about the inter-relationships of all these factors on the health of amphibian populations.
One item of note was that there is no correlation between the size of a wetland and the diversity of amphibian species; small seasonal wetlands are as important as large ones. They tend to be less attractive to predators such as fish or invasive bullfrogs, and can be highly productive. Protect those little wetlands on your property, if you have them!
You can download a summary of her presentation with more interesting facts and figures.