Temperature and nitrogen effects on phosphorus uptake by agricultural stream-bed sediments
dc.contributor.author | McDowell, Richard | |
dc.contributor.author | Elkin, KR | |
dc.contributor.author | Kleinman, PJA | |
dc.coverage.spatial | United States | |
dc.date.accessioned | 2017-08-25T04:37:20Z | |
dc.date.available | 2017-03 | |
dc.date.issued | 2017-03-17 | |
dc.date.submitted | 2016-12-09 | |
dc.description.abstract | Climate change will likely increase the growing season, temperatures, and ratio of nitrogen (N) to phosphorus (P) loss from land to water. However, it is unknown how these factors influence P concentrations in streams. We sought to evaluate differences in biotic and abiotic processes affecting stream sediment P dynamics under different temperature and N-enrichment regimes. Three sediments of varying P composition and sorption characteristics were placed into a fluvarium. Synthetic runoff water, with or without added N, was added to the flume's reservoir, and the solution was maintained at 19 or 26°C. Water and sediment samples were taken with time since runoff was introduced. The rate and magnitude of P uptake by sediment was greater at 19°C compared with 26°C, and also when N was added compared with no N added. Analysis of sediment samples indicated that P uptake via abiotic processes was greater at 19 than at 26°C. The addition of N stimulated P uptake by the microbial biomass at 19°C, but microbial uptake was potentially inhibited at 26°C. Because microbial biomass is a temporary store of P, these data suggest that more P may be available with increasing temperatures during the growing season, especially under baseflow, implying that strategies to mitigate P losses from land to water should be strengthened to prevent potential water quality impairment. | |
dc.format.extent | pp.295-301 | |
dc.format.medium | ||
dc.identifier | https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=elements_prod&SrcAuth=WosAPI&KeyUT=WOS:000397864700008&DestLinkType=FullRecord&DestApp=WOS_CPL | |
dc.identifier.citation | McDowell, R.W., Elkin, K.R., & Kleinman, P.J.A. (2017). Temperature and nitrogen effects on phosphorus uptake by agricultural stream-bed sediments. Journal of Environmental Quality, 46(2), 295-301. doi:10.2134/jeq2016.09.0352 | |
dc.identifier.doi | 10.2134/jeq2016.09.0352 | |
dc.identifier.eissn | 1537-2537 | |
dc.identifier.issn | 0047-2425 | |
dc.identifier.other | 28380551 (pubmed) | |
dc.identifier.uri | https://hdl.handle.net/10182/8465 | |
dc.language | en | |
dc.language.iso | en | |
dc.publisher | Crop Science Society of America with America Society of Agronomy and Soil Science Society of America | |
dc.relation | The original publication is available from Crop Science Society of America with America Society of Agronomy and Soil Science Society of America - https://doi.org/10.2134/jeq2016.09.0352 - http://dx.doi.org/10.2134/jeq2016.09.0352 | |
dc.relation.isPartOf | Journal of Environmental Quality | |
dc.relation.uri | https://doi.org/10.2134/jeq2016.09.0352 | |
dc.rights | Copyright © American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America. 5585 Guilford Rd., Madison, WI 53711 USA. All rights reserved. | |
dc.subject | nitrogen | |
dc.subject | phosphorous | |
dc.subject | stream bed | |
dc.subject | sediments | |
dc.subject.anzsrc2020 | ANZSRC::31 Biological sciences | |
dc.subject.anzsrc2020 | ANZSRC::37 Earth sciences | |
dc.subject.anzsrc2020 | ANZSRC::41 Environmental sciences | |
dc.subject.mesh | Nitrogen | |
dc.subject.mesh | Phosphorus | |
dc.subject.mesh | Temperature | |
dc.subject.mesh | Rivers | |
dc.subject.mesh | Geologic Sediments | |
dc.title | Temperature and nitrogen effects on phosphorus uptake by agricultural stream-bed sediments | |
dc.type | Journal Article | |
lu.contributor.unit | LU | |
lu.contributor.unit | LU|Agriculture and Life Sciences | |
lu.contributor.unit | LU|Agriculture and Life Sciences|SOILS | |
lu.contributor.unit | LU|Research Management Office | |
lu.contributor.unit | LU|Research Management Office|OLD QE18 | |
lu.identifier.orcid | 0000-0003-3911-4825 | |
pubs.issue | 2 | |
pubs.publication-status | Published | |
pubs.publisher-url | http://dx.doi.org/10.2134/jeq2016.09.0352 | |
pubs.volume | 46 |