How can I spruce up the wetland on my property without doing it harm?

I live in Western Washington. It’s not really a marshland. It’s more of a depression where water gathers and dries up every year. I want to put in a trail and remove all the dead trees. I could maybe replace them with something else. I just don’t want it to look like it got hit by a windstorm anymore while being conscious of maintaining the health of the environment.