Carl F. Cerco

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The underwater light climate ultimately determines the depth distribution, abundance and primary production of autotrophs suspended within and rooted beneath the water column. This paper addresses the underwater light climate, with reference to effects of suspended solids and growth responses of autotrophs with emphasis on phytoplankton. Effects of the most(More)
Pomeroy et al. (2006) proposed that temporal and spatial mismatches between eastern oyster filtration and phytoplankton abundance will preclude restored stocks of eastern oysters from reducing the severity of hypoxia in the deep channel of central Chesapeake Bay. We refute this contention by presenting arguments, data, and model results, overlooked by these(More)
This paper describes our experience in designing and building a tool for visualizing the results of the CE-QUAL-ICM Three-Dimensional Eutrophication Model, as applied to water quality in the Chesapeake Bay. This model outputs a highly multidimensional dataset over very many timesteps – outstripping the capabilities of the visualization tools available to(More)
Empirical models of sediment-water fluxes of NH4 +, NO3 − were and PO4 3− were formed based on published reports. The models were revised and parameters evaluated based on laboratory incubations of sediments collected from Gunston Cove, VA. Observed fluxes ranged from — 18 (sediments uptake) to 276 (sediment release) mg NH4 + m−2 day−1, −17 to −509 mg NO3 −(More)
Algal growth kinetics based on internal phosphorus concentration were incorporated into an existing eutrophication model. Application to a closed system resulted in damped oscillations in algal biomass and phosphate relative to a model with fixed composition. Peak biomass did not differ substantially, however, from that attained using a model with fixed,(More)
The Corps of Engineers Integrated Compartment Water Quality Model (CE-QUAL-ICM or simply ICM) was designed to be a flexible, widely applicable eutrophication model. Ecopath with Ecosim (EWE) is a freely distributed network model supported by the Fisheries Centre, University of British Columbia. This study aimed to develop a coupling between the two models(More)
BACKGROUND: In recent years new ideas for nutrient management to control eutrophication in estuarine environments have been under consideration. One popular approach being considered in the Chesapeake Bay Program is called the “top down” approach based on the premise that restoring algal predators, such as oysters and menhaden, will limit excess(More)
This report is the last of a series that documents research relating the coupling of spatially and temporally detailed eutrophication models with ecosystem models that lack spatial and temporal resolution. Specifically, the Corps of Engineers Integrated Compartment Water Quality Model, CE-QUAL-ICM (ICM) is coupled to the Ecopath with Ecosim (EWE) fisheries(More)