Sierra Nevada Network lake monitoring 2008 and 2009 summary report.
Heard AM. 2012. Sierra Nevada Network lake monitoring 2008 and 2009 summary report.. Natural Resource Data Series. NPS/SIEN/NRDS—2012/357. National Park Service. Fort Collins, Colorado
The 2008 and 2009 field seasons marked the first two seasons of SIEN’s Lake Monitoring Program. In this report we provide a general evaluation of how well the protocol performed in its first years and present the 2008 and 2009 water chemistry results. Summary statistics are presented for the network as a whole and for each park for the 18 water chemistry measures that we monitor. Time series graphs are presented for the four sites that we sample on a more frequent schedule. A few points of interest are highlighted including lower observations of nitrate concentrations in Yosemite compared to Sequoia and Kings Canyon. This difference is likely attributed to lower rates of atmospheric deposition in Yosemite. Sequoia and Kings Canyon, Sequoia in particular, have higher deposition rates due to air patterns that concentrate pollutants in the southern Central Valley. Consistent with lower nitrate concentrations in Yosemite, we also see a higher proportion of lakes where nitrogen is the limiting nutrient. More in depth analyses and discussion will be included in the comprehensive reports which will be produced every four years.
- Type
- Published Report
- Authors
- Heard, Andrea
- Date of Issue
- 2012-09
- Publisher
- National Park Service
- Units
- NRSS , SEKI , SIEN , YOSE
- Keywords
- Lake Monitor, Lakes, Monitoring, Sierra Nevada, Water Chemistry