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Wetland Birds
The tidal marshes of Alabama feed a rich bird community. The newly created salt marsh is a prime feeding habitat for herons, egrets, pelicans, terns, sandpipers, and blackbirds. As the arch matures, the diversity and abundance of birds will increase.
At least Sandpiper (Calidris minutilla)
The marsh at low tide brings sandpipers moving in unison across the wet sand areas.
Snowy Egret (Egretta thula), American Egret (Casmerodius albus), Great Blue Heron (Ardea Herodias)
The Snowy Egret, American Egret, and Great Blue Heron feed on fish and invertebrates from the marsh.
Least Tern (Sterna antillarum)
The open sand dune area provides primary nesting sites for the Least Tern which have been threatened with habitat loss.
Brown Pelican (Pelecanus occidentalis)
Old pilings in the water provide a resting site for Southern Brown Pelicans which once were near extinction in this area.
Ruddy Turnstone(Arenaria interpres)
Cruising along the rock is the Ruddy Turnstone. This bird turns over oysters and clam shells in search of food.
Black Skimmer (Rynchops niger)
Gifted with a graceful wing beat and beautiful coloration, the Black Skimmer grazes along the surface of the water in search of fish.
The large (Phragmites) to the East of the marsh are utilized for nesting by Red-Winged Blackbirds and Boat-tailed Grackles.
Boat-tailed Grackle (Quiscalus major) Red-winged Blackbird (Agelaius phoeniceus)
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Barrier Islands
Shaped by Wind and Water
Sea levels began rising 18-20,000 years ago, moving sandbars toward the mainland. The rate of rising slowed 6,000 years ago, allowing the sandbar to emerge as the present barrier islands.
The dune land plants, stabilize the wind-blown sands, building ridges and mounds called dunes in the highest areas of the beach, and dunes are very important, because as a storm attacks a beach, water, and gravity roll the sand downhill, away from the dunes.
This builds up an offshore sandbar, absorbing energy from the waves of the storm and protecting what is left of the beaches and dune lands.
After the storm, the offshore bar provides sand for rebuilding the beach.
Barrier islands perform two functions:
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Alabama Coastal Connection
Dune Plants survive in a harsh environment
Adaptation allows plants to survive salt and freshwater flooding, extreme high and low temperatures, and hurricane-force winds.
These plants reproduce from cuttings created by storms and wave action. They all rebuild the beach and dune system by trapping wind-b town sand.
Sea Rocket (Cakile constricts)
A common succulent found just above the high tide line, Sea Rocket has thick fleshy leaves to help conserve water.
Large leaf Pennywort (Hydrocotyle bonariensis)
A creeping perennial that spreads by far-reaching underground stems, Pennywort grows to about 6 inches tall and has clusters of tiny white or pale-green flowers on a 3-inch stem.
Coastal Panicgrass (Panicum amarulum)
A dense, upright perennial bunchgrass, Panicgrass helps anchor the shifting sands with deeply buried root systems.
Sea Oats (Uniola paniculata)
As the most important and widespread grass on southern coastal dunes, the Sea Oats' recovery following storm impact is the first step in dune rebuilding.
Morning Glory (Ipomoea stolonifera)
This vine with trumpet-shaped, white flowers, grows low to the ground, escaping the killing effects of salt spray. The stems may extend over the sand surface for 30 to 50 feet.
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| Butterflies of Dauphin Island |
