Water quality in the Asan River, War in the Pacific National Historical Park: Summary report 2007–2012. Natural Resource Data Series NPS/PACN/NRDS—2014/662. National Park Service, Fort Collins, Colorado.
Raikow DF and Farahi A. 2014. Water quality in the Asan River, War in the Pacific National Historical Park: Summary report 2007–2012. Natural Resource Data Series NPS/PACN/NRDS—2014/662. National Park Service, Fort Collins, Colorado.. Natural Resource Data Series. NPS/PACN/NRDS—2014/662. National Park Service. Fort Collins, Colorado
This Natural Resource Data Series Report (NRDS) presents data collected from the Asan River, War in the Pacific National Historical Park, Guam. This is a summary or “data report” as described in the Water Quality Vital Signs Monitoring Protocol for the Pacific Island Network Version 1.0, Natural Resource Report NPS/PACN/NRR-2011/418. This report is restricted to data presentation and limited description. The data presented in this report will be analyzed for the establishment of expected parameter value ranges and long-term trends in future reports published in the NPS Natural Resource Technical Report (NRTR) series. The purpose of collecting data on Vital Signs is to provide park managers information on current conditions and temporal trends in ecosystem health. Several parameters were found to be outside published water quality criteria values over the monitoring period. Slightly high pH, relative to water quality criteria (Guam 1997), may have been the result of autotrophic (plant) activity, i.e. macrophytes and/or algae. Supersaturation of oxygen was measured when high pH was measured, indicating the high autotrophic activity. Because autotrophs consume CO2, they can alter the carbonic acid balance in the water column resulting in higher pH (Wetzel 2001). Elevated turbidity may have been the result of siltation caused by the construction of homes just outside the park border in the upper reaches of the Asan River.
- Type
- Published Report
- Authors
- Raikow, David; Farahi, Anne
- Date of Issue
- 2014-05
- Publisher
- National Park Service
- Units
- NRSS , PACN , WAPA
- Keywords
- Chlorophyll, Dissolved Oxygen, Fresh and Brackish Water Quality Monitoring Report, Monitoring, nitrate + nitrite, NO3 + NO2, Optical Dissolved Oxygen, pH, Salinity, Specific Conductivity, TDN, TDP, Temperature, total dissolved nitrogen, total dissolved phosphorous, Turbidity, Water Quality, Water Quality Monitoring Report
- Subjects
- Ecological Framework: Water | Water Quality | Water Chemistry , Ecological Framework: Water | Water Quality | Nutrient Dynamics