. Coast watch. Marine resources; Oceanography; Coastal zone management; Coastal ecology. COASTAL TIDINGS. Fall Flowers Tracing Nutrients Nutrients drain into coast-bound rivers from point sources such as sewage treatment plants and industrial outfalls and from nonpoint sources such as city streets, farms and forests. Currently, too many nutrients float downstream, and many coastal rivers are becoming overly enriched or eutrophic. The results are algal blooms, dead water zones and fish kills. Limitations on nutrient inputs are needed, but first scientists must determine the sources and amount o
. Coast watch. Marine resources; Oceanography; Coastal zone management; Coastal ecology. COASTAL TIDINGS. Fall Flowers Tracing Nutrients Nutrients drain into coast-bound rivers from point sources such as sewage treatment plants and industrial outfalls and from nonpoint sources such as city streets, farms and forests. Currently, too many nutrients float downstream, and many coastal rivers are becoming overly enriched or eutrophic. The results are algal blooms, dead water zones and fish kills. Limitations on nutrient inputs are needed, but first scientists must determine the sources and amount of nutrients flowing into rivers. Sea Grant researcher Stephen Skrabel, a chemist at the University of North Carolina at Wilmington, believes dissolved silver may be a tool to distinguish nutrient input. He'll test the hypothesis that nutrients from industrial sources have low dissolved silver ratios while those from agricultural sources are much higher. Skrabel will use water samples taken from the Cape Fear River to conduct his experiments. If Skrabel's hypothesis proves correct, dissolved silver may be used as a tracer for nutrient sources. ? The mountains don't have sole claim to fall beauty. North Carolina's coastal marshes and dunes also offer residents and visitors a dose of visual splendor. Look first at the marshes, says Sea Grant marine education specialist Lundie Spence. Inter- spersed among the marsh grasses are the delicate, purple blooms of sea lavender. Along upper tidal areas of the marsh, the jointed fingers of glasswort turn flame red as the cool fall breezes cause the plant's green chlorophyll to break down. In the dunes, seaside goldenrod is in its glory, and camphorweed, a member of the aster family, dots the back of the dunes with yellow flowers. In the depressions between dune tops, purple muhly catches dew, and the five-petal marsh pink still blossoms. ? Seashells by the Seashore Although few mollusks live on sandy beaches, the shoreline is a good place t
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Keywords: ., bookcentury1900, bookcollectionunclibra, booksubjectoceanography
