Unsolved Problems and Future Research

Future work in the area of primary production modeling of the Lower Hudson River Estuary is likely to center around three pressing needs arising in New York/New Jersey Harbor. These needs include:

1. The response of the local regulatory community to the U.S. Environmental Protection Agency's new marine dissolved oxygen criteria and nutrient criteria guidance documents,

2. Regulatory requirements for the development of total maximum daily loads (TMDLs) for nutrients and dissolved oxygen, and

3. The assessment of the impact of external chemical loadings to the New York/New Jersey Harbor ecosystem on water quality, sediment quality, bottom dwelling organisms, and fish. The hydrodynamic transport andcarbonproductionkineticsdevelopedfor primary productivity models are essential to a technically defensible modeling approach to address water quality, sediment, and food chain contaminant issues.

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