Spatial and temporal phosphorus distribution changes in a large wetland ecosystem

摘要: [1] Long- and short-term changes in the spatial distribution of surface water phosphorus concentrations were assessed for Everglades wetland (USA) from 12 years monitoring data. Changes distributions, before after implementation measures to reduce phosphorus, including stormwater treatment areas (STAs) best management practices (BMPs), used evaluate effect remediation strategies naturally oligotrophic wetland. Results showed a clear temporal gradient concentrations, with highest total (TP) reaching 200 mg/L northern Water Conservation Areas (WCAs) because canal inflow Agricultural Area (EAA). Long-term records TP 1995 2007 declines WCA1 during dry season (� 5.1%). Short-term (2003–2007) increasing trends elsewhere Everglades, mainly southern areas: WCA3 National Park (ENP). From 2003 2007, increased by 7.4% per year ENP season. The area that exceeded 10 concentration ecological threshold was quantified long-term overall decline. However, except ENP, more than 65% quality 2007. During recent years, alternative 15 annual geometric mean slightly increased, confirming need closely monitor these two regions.