Nothing says “love” to scientists like amphibian eggs in Portland’s waterways. 

These pictures show egg masses for red-legged frogs (left) and Pacific tree frog (right), as well as a rough-skinned newt underwater.

Environmental Services scientists found these while monitoring for amphibian populations at Johnson Creek restoration sites. 

We monitor amphibians, like native salamanders, newts and frogs, to track the success of restoration projects and overall conditions in local streams.  Amphibians are an indicator of water quality conditions – they are very sensitive to pollution.