Aquatic Sciences Meeting, Albuquerque 2001

SS31 Integrated Approaches to Drainage Basin Nutrient Inputs and Inland/Coastal Eutrophication (Science and Society Connections)

Date: Thursday, February 15, 2001, Time: 4:45:00 PM

Location: Cimarron

Hoell, E, E, Norsk Hydro, Research Centre Porsgrunn, Porsgrunn, Norway, espen.edward.hoell

EUTROPHICATION VERSUS HARVESTABLE RESOURCES. IMPLICATIONS OF CHANGING NUTRIENT RATIO'S AND NUTRIENT SUPPLY DYNAMICS FOR THE FOOD WEB EFFICIENCY.

Agricultural practices, pathways of nutrients through the food system and runoff, atmospheric inputs, damming, river regulation and sewage outfall design are all human factor that influence the availability, distribution as well as nutrient balance and composition in coastal waters. Eutrophication may be viewed as the result of ineffective transformations of nutrients in the coastal food web. However nutrients are also valuable resources that are able to stimulate efficient productivity in upwelling regions. The differences in nutrient availability and dynamics in these systems will be discussed. The role of nutrient ratio's and their implication for occurrence of harmful algae will be adressed. Finally, some thoughts of future nutrient management and possibilities for the use of excess nutrients as well as remediation of eutrophicated areas will be presented.

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Aquatic Sciences Meeting, Albuquerque 2001

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