Response of Chesapeake Bay to Nutrient Load Reductions

摘要: A eutrophication model package was employed to examine the response of mainstem Chesapeake Bay nitrogen and phosphorus load reductions. In addition sensitivity analyses, bay examined under limit-of-technology nutrient controls all-forest conditions. Scenarios were run in a time-variable mode for minimum 10 years. Decade-long simulations required achieve near-complete Analyses indicated that primary effect limitation algal biomass during spring bloom upper summer. Nitrogen limited primarily lower bay. more effective than limiting production reducing anoxic volume. Limit-of-technology reductions, average hydrologic conditions, improved summer-dissolved oxygen by ≈0.5 gm m\u–³ reduced volume 40%. Anoxia largely absent all-forest, conditions but persisted wet, highly stratified