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The St. Johns River is one of Florida’s most productive estuaries and the nursery grounds for numerous species of commercially harvested fish and shellfish we love to eat. Shrimp spawn offshore, but once their eggs hatch, the larvae migrate back to the ideal habitat of the St. Johns estuary to grow and mature. As a result, commercial and sport shrimpers enjoy the river’s bounty between Jacksonville and Palatka. Blue crabs, the largest fishery in the river, release their eggs in the marine waters near the mouth of the river. Wind and tides will eventually carry the larvae upstream where they will find refuge in the submerged grasses that will nurture them. During the warmer months, blue crabs reach as far south as Lake George. The St. Johns’ delicate tidal balance of salt and freshwater has historically enabled healthy underwater grasses to thrive, providing critical habitat for fresh and saltwater species that have attracted sportsmen from near and far. Now our thriving estuary and fishing economy are at risk. Due to overuse of our aquifer, dredging and increasing saltwater intrusion, the St. Johns’ underwater grasses are disappearing, the cypress forest wetlands are stressed and fish habitat is vanishing within the St. Johns River estuary from Welaka to Palatka to Jacksonville. The loss of our river’s submerged grasses also increase the threat of toxic blue green algae and increase flood risk throughout the lower St. Johns. [Read more…]
Photo credit: Doug Engle / St. Johns Riverkeeper
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