. Building salt marshes along the coasts of the continental United States. Marsh ecology; Marshes. Algae Proktiitia Orehtlimum Othar htrbivorout intactt Uca 3 Stsorma Modiolus — Littorina *- Oligochaete Streblospio Capitella Manayunkia. Spitf«rt PoMarhiM Dro^onfliM Eurytium Clopptr Rail Raccoon Figure 4. Georgia low marsh food web (redrawn from Teal, 1962) The productivity and utilization of high marsh has received less attention than that of low marsh. Indications are that net produc- tion of some high marsh may equal that of many low marsh. The im- portant difference, however, is that the ex
. Building salt marshes along the coasts of the continental United States. Marsh ecology; Marshes. Algae Proktiitia Orehtlimum Othar htrbivorout intactt Uca 3 Stsorma Modiolus — Littorina *- Oligochaete Streblospio Capitella Manayunkia. Spitf«rt PoMarhiM Dro^onfliM Eurytium Clopptr Rail Raccoon Figure 4. Georgia low marsh food web (redrawn from Teal, 1962) The productivity and utilization of high marsh has received less attention than that of low marsh. Indications are that net produc- tion of some high marsh may equal that of many low marsh. The im- portant difference, however, is that the export mechanism of frequent tidal flushing is absent in high marsh. Consequently, much of the high marsh biomass goes into peat formation, in situ, rather than into the estuarine food chain. For this reason, high marsh appears to be of much less direct value to the estuary although it is effec- tive for shore stabilization and damping of storm surges. (3) Marsh Animals. The rigorous environment of the salt marsh sharply limits the number of animals that live there. These areas are used by birds such as herons, rails, sandpipers, geese, ducks, and songbirds and by raccoons. A much larger population of animals lives in or on the mud surface. The more conspicuous are fiddler crabs, mussels, clams, and periwinkles. Less obvious but more numerous are annelid and oligochaete worms and insect larvae. 18. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Woodhouse, W. W. (William Walton), 1910-. Ft. Belvoir, Va. : U. S. Army, Corps of Engineers, Coastal Engineering Research Center
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