Gripping the long branch of a speckled alder tree, ecologist Deborah Landau slowly steps into the waist-deep murky water. “You can’t see anything, so watch your step,” she warns as she makes her way through the chilly labyrinth of the Finzel swamp preserve in Maryland. The swamp is a meditation for the senses: the sweet aroma of red spruce, the call of the locally rare alder flycatcher and an array of colour in what appears as endless blueberry and rhododendron shrubs.
