Stream and shallow groundwater nutrient concentrations in an Ozark forested riparian zone of the central USA
Characterizing spatiotemporal variations in surface water (SW)–shallow groundwater (GW) nutrient concentrations is important to predict stream ecosystem responses to disturbance. Unfortunately, there is a lack of such information from mixed-deciduous semi-karst hydro-geological regions. Nitrate (NO3...
| Autores principales: | , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Springer
2015
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| Acceso en línea: | https://hdl.handle.net/10568/58444 |
| _version_ | 1855525675809636352 |
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| author | Chinnasamy, Pennan Hubbart, J.A. |
| author_browse | Chinnasamy, Pennan Hubbart, J.A. |
| author_facet | Chinnasamy, Pennan Hubbart, J.A. |
| author_sort | Chinnasamy, Pennan |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Characterizing spatiotemporal variations in surface water (SW)–shallow groundwater (GW) nutrient concentrations is important to predict stream ecosystem responses to disturbance. Unfortunately, there is a lack of such information from mixed-deciduous semi-karst hydro-geological regions. Nitrate (NO3 -), total phosphorous (P), potassium (K) and ammonium (NH4 +) concentrations were monitored in a case study between an Ozark stream and riparian hardwood forest GW over the 2011 water year in the central USA. Average SW NO3 -, P, K and NH4 + concentrations were 0.53, 0.13, 3.29 and 0.06 mg L-1, respectively. Nine meters from the streambank, average GW NO3 -concentration was 0.01 mg L-1, while P, K and NH4 + concentrations were 0.03, 1.7 and 0.04 mg L-1, respectively. Hyperbolic dilution model results indicated that NO3 - and K exhibited dilution behavior, while NH4 + had a concentration effect and P was hydrologically constant. Observed seasonal NO3 - concentration patterns of winter maxima and summer minima in SW (1.164 and 0.133 mg L-1) and GW (0.019 and 0.011 mg L-1) were supported by previous studies yet exhibited distinct semi-karst characteristics. Results indicate that in addition to relatively low residence time, lower nutrient concentrations in GW (relative to SW) may suggest that shallow GW flow processes are important for vegetation removal and retention of nutrients from streams in semi-karst shallow groundwater systems of the central USA. |
| format | Journal Article |
| id | CGSpace58444 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2015 |
| publishDateRange | 2015 |
| publishDateSort | 2015 |
| publisher | Springer |
| publisherStr | Springer |
| record_format | dspace |
| spelling | CGSpace584442025-06-17T08:23:41Z Stream and shallow groundwater nutrient concentrations in an Ozark forested riparian zone of the central USA Chinnasamy, Pennan Hubbart, J.A. groundwater surface water stream flow nutrients nitrates phosphorus potassium ammonium hydrology riparian zones case studies Characterizing spatiotemporal variations in surface water (SW)–shallow groundwater (GW) nutrient concentrations is important to predict stream ecosystem responses to disturbance. Unfortunately, there is a lack of such information from mixed-deciduous semi-karst hydro-geological regions. Nitrate (NO3 -), total phosphorous (P), potassium (K) and ammonium (NH4 +) concentrations were monitored in a case study between an Ozark stream and riparian hardwood forest GW over the 2011 water year in the central USA. Average SW NO3 -, P, K and NH4 + concentrations were 0.53, 0.13, 3.29 and 0.06 mg L-1, respectively. Nine meters from the streambank, average GW NO3 -concentration was 0.01 mg L-1, while P, K and NH4 + concentrations were 0.03, 1.7 and 0.04 mg L-1, respectively. Hyperbolic dilution model results indicated that NO3 - and K exhibited dilution behavior, while NH4 + had a concentration effect and P was hydrologically constant. Observed seasonal NO3 - concentration patterns of winter maxima and summer minima in SW (1.164 and 0.133 mg L-1) and GW (0.019 and 0.011 mg L-1) were supported by previous studies yet exhibited distinct semi-karst characteristics. Results indicate that in addition to relatively low residence time, lower nutrient concentrations in GW (relative to SW) may suggest that shallow GW flow processes are important for vegetation removal and retention of nutrients from streams in semi-karst shallow groundwater systems of the central USA. 2015-05 2015-03-17T14:39:59Z 2015-03-17T14:39:59Z Journal Article https://hdl.handle.net/10568/58444 en Limited Access Springer Chinnasamy, Pennan; Hubbart, J. A. 2014. Stream and shallow groundwater nutrient concentrations in an Ozark forested riparian zone of the central USA. Environmental Earth Sciences, 14p. (Online first). doi: https://doi.org/10.1007/s12665-014-3880-7 |
| spellingShingle | groundwater surface water stream flow nutrients nitrates phosphorus potassium ammonium hydrology riparian zones case studies Chinnasamy, Pennan Hubbart, J.A. Stream and shallow groundwater nutrient concentrations in an Ozark forested riparian zone of the central USA |
| title | Stream and shallow groundwater nutrient concentrations in an Ozark forested riparian zone of the central USA |
| title_full | Stream and shallow groundwater nutrient concentrations in an Ozark forested riparian zone of the central USA |
| title_fullStr | Stream and shallow groundwater nutrient concentrations in an Ozark forested riparian zone of the central USA |
| title_full_unstemmed | Stream and shallow groundwater nutrient concentrations in an Ozark forested riparian zone of the central USA |
| title_short | Stream and shallow groundwater nutrient concentrations in an Ozark forested riparian zone of the central USA |
| title_sort | stream and shallow groundwater nutrient concentrations in an ozark forested riparian zone of the central usa |
| topic | groundwater surface water stream flow nutrients nitrates phosphorus potassium ammonium hydrology riparian zones case studies |
| url | https://hdl.handle.net/10568/58444 |
| work_keys_str_mv | AT chinnasamypennan streamandshallowgroundwaternutrientconcentrationsinanozarkforestedriparianzoneofthecentralusa AT hubbartja streamandshallowgroundwaternutrientconcentrationsinanozarkforestedriparianzoneofthecentralusa |