Coastal waters enhancements

Decreases in the delivery of DSi loading of Mississippi River to coastal waters have been attributed to enhanced N loading in the river, which is believed to have increased diatom production and sedimentation in the watershed. 

Paerl, H. W., and Fogel, M. L. (1994). Isotopic characterization of atmospheric nitrogen inputs as sources of enhanced primary production in coastal Atlantic Ocean waters. Mar. Biol. 119, 635—645. Paerl, H. W., Dennis, R. L., and Whitah, D. R. (2002). Atmospheric deposition of nitrogen Implications for nutrient over-enrichment of coastal waters. Estuaries 25, 677—693. 

Vanadium is also an essential element for some marine macro-algae, such as the brown seaweed F. spiralus and the green seaweed Entero-morpha compressa. The growth yield of these marine algae is enhanced considerably (26) when vanadate is added to the culture medium, which consists of artificial seawater. Some seaweeds contain vanadium. A study of 70 seaweeds from Japanese coastal waters yielded vanadium contents ranging from 0.3 to 10.6 ppm on the basis of dry weight (27). 

X HE LEVELS OF INDUSTRIAL CHEMICAL WASTES BEING DUMPED into our nation s coastal waters are constantly being monitored by the National Oceanic and Atmospheric Administration (NO A A). To carry out the frequent marine monitoring programs necessary to stay abreast of this problem, it was determined in 1977 that more expedient shipboard sampling and analyses systems would have to be developed. One area of prime interest for sampling and scrutiny was the surficial seafloor sediments. To enhance rapid data collection, the ability to analytically measure samples while at sea was essential. This capability would allow areas of interest to be delineated and studied in detail before the survey vessel returned to port. 

Anthropogenic Trace Metal Enhancements in Coastal Waters and Embayments... 

The anthropogenic dominance of lead in the open-ocean environment has been conclusively demonstrated. Although there is evidence that the fluxes of other elements to the ocean have been enhanced to a significant degree, there is less direct evidence documenting their enhancements in the open-ocean environment. Coastal waters and sediments near major... 

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