Hatches Harbor salt marsh, Cape Coad. The Hatches Harbor salt marsh is a remnant of a larger salt marsh complex that existed at the time of the first European settlement. USGS. Photo source: ©© Lydia Mann
Excerpts;
As recreational fishing activity has reduced predators in many of Cape Cod’s salt marsh ecosystems, Sesarma crabs have feasted on grasses, causing dramatic die-offs of the marshes, according to a new study. The researchers assessed the “trophic cascade” in several experiments that also ruled out alternative explanations for the problem…
