Water Quality Trends in Shallow South Florida Lakes and Assessment of Regional Versus Local Forcing Functions

作者：James R Thomas^*; Havens Karl E; McOrmick Paul; Jones Brad; Ford Clell

来源：Critical Reviews in Environmental Science and Technology, 2011, 41: 576-607.

DOI：10.1080/10643389.2010.530581

• shallow lakes
• water quality trends
• hydrology
• environmental management
• synchrony
• nutrient loads
• South Florida

Seven large shallow lakes in South Florida, including five of the Kissimmee Chain of Lakes (KCOL) and Lakes Istokpoga and Okeechobee, have been the focus of long-term water quality monitoring since 1981, 1988, and 1972, respectively. Analysis of these long-term data, rare for a subtropical region, allowed the authors to evaluate trends and the extent to which observed temporal patterns are driven by regional climate-related forcing functions (e.g., rainfall and discharge) versus local forcing functions including nutrient load reductions and in-lake rehabilitation projects conducted by management agencies. Recent changes occurring in 2004 and 2005 were likely a result of major tropical storm events that affected sediment resuspension. While more localized phenomena including land use, sediment-water interactions, and management of aquatic plants appear to overwhelm synchronous patterns for water quality, activities that reduce a significant amount of external load, such as diversion of wastewater treatment effluent, and large infestations of Hydrilla have resulted in improvements of water quality in some of these lakes.

• 出版日期2011