Nutrient-algae patterns of periphyton and water column chlorophyll a in the Long-Term Receiving Water Study rivers: Variation with site, season, and year
Flinders, C
HERO ID
3608202
Reference Type
Technical Report
Year
2006
Language
English
| HERO ID | 3608202 |
|---|---|
| Year | 2006 |
| Title | Nutrient-algae patterns of periphyton and water column chlorophyll a in the Long-Term Receiving Water Study rivers: Variation with site, season, and year |
| Authors | Flinders, C |
| Publisher Text | National Council for Air and Stream Improvement (NCASI) |
| City | Research Triangle Park, NC |
| Page Numbers | 1-128 |
| Abstract | Nutrient enrichment, in particular by nitrogen and phosphorus, can result in the proliferation of algal biomass and may have implications for ecosystem health. The United States Environmental Protection Agency (EPA) has required the states to develop nutrient criteria for waterbodies within their jurisdictions. In response to the development of nutrient criteria guidance documents by EPA, based in part at least upon the assumptions of periphyton and water column chlorophyll a (chl a) relationships with total nitrogen (TN) and total phosphorus (TP), nutrient and chl a data collected as part of NCASI’s Long-Term Receiving Water Study (LTRWS) were examined to determine spatial and temporal variation in nutrient concentrations, periphyton chlorophyll a (chl a), and water column chl a, and nutrient-chl a relationships. Nutrient and chl a patterns were examined in the four LTRWS rivers (Codorus Creek, and the Leaf, McKenzie, and Willamette Rivers) with respect to spatial (site relative to mill location) and temporal (year and season) variation to determine the applicability and relevance of EPA’s guidelines to these systems. Measured TN and TP concentrations were not influenced by the mill discharges at any of the four study locations. Seasonal nutrient concentrations were generally greatest in Codorus Creek (TN=2.4 to 5.3 mg/L, TP=0.08 to 0.18 mg/L) with mean seasonal TN and TP concentrations in the other rivers ranging from 0.07 to 1.1 mg/L and 0.05 to 0.22 mg/L, respectively. Mean seasonal TN concentration in the LTRWS river tributary streams was greater than concentrations in the main channels of Codorus Creek and the Willamette River, but similar or lower to that seen in the Leaf and McKenzie Rivers. |
| Report Number | Technical Bulletin No. 923 |
| Url | http://www.ncasi.org/Programs/Reports-and-Articles/Technical-Bulletins-and-Special-Reports/Technical-Bulletins/Index.aspx |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | English |
| Keyword | Codorus Creek; Leaf River; McKenzie River; Nitrogen; Periphyton; Phosphorus; Phyoplankton; Spatial and temporal variation; Water column algae; Willamette River |