naa a22 4500 510749933 CHVBK 20180411083100.0 cr unu---uuuuu 180411e20130701xx s 000 0 eng 10.1007/s11270-013-1594-1 doi (NATIONALLICENCE)springer-10.1007/s11270-013-1594-1 Seasonal Variation in Nutrient Export Along Streams in the Northern Great Plains [Elektronische Daten] [Julie Corriveau, Patricia Chambers, Joseph Culp] Spatial and temporal trends in nutrient concentrations and loads were analyzed for three rivers in the Red River watershed, Manitoba, Canada to determine changes in nutrient export across hydrologic seasons and along river continua in the Great Plains. Annual patterns in all three rivers were strongly influenced by the snowmelt period: 25-89% of the total annual river volume, 42-92% of the total annual TP load, and 41-81% of the total annual TN load were delivered during snowmelt. Concentrations of TP and TN varied among the hydrologic seasons (snowmelt, summer, fall, and winter), but showed more variability and larger values during winter and snowmelt, with peak values reaching 1.960mg TP L−1 and 16.07mg TN L−1. Although the flat topography and semi-arid climate of the Red River watershed results in hydrological disconnects along river continua, discharge and nutrient export increased along the three river gradients. In contrast, TP or TN concentrations showed no significant longitudinal change for the two agriculturally dominated watersheds yet increased along the forested stream. Our finding that TP and TN exports from northern Great Plains rivers are strongly influenced by seasonal hydrology, with snowmelt being a critical period for nutrient export has implications for design and implementation of appropriate management practices to minimize nutrient export to proximal and downstream aquatic ecosystems. Her Majesty the Queen in Right of Canada, 2013 Phosphorus nationallicence Nitrogen nationallicence River continuum nationallicence Land use nationallicence Great Plains nationallicence Stream nationallicence River nationallicence Seasonal change nationallicence Corriveau Julie Environment Canada, 867 Lakeshore Rd, P.O. Box 5050, L7R 4A6, Burlington, ON, Canada aut Chambers Patricia Environment Canada, 867 Lakeshore Rd, P.O. Box 5050, L7R 4A6, Burlington, ON, Canada aut Culp Joseph Environment Canada and Canadian Rivers Institute @ Department of Biology, University of New Brunswick, 10 Bailey Dr, P.O. Box 4400, E3B 5A3, Fredericton, NB, Canada aut Water, Air, & Soil Pollution Springer Netherlands 224/7(2013-07-01), 1-16 0049-6979 224:7<1 2013 224 11270 https://doi.org/10.1007/s11270-013-1594-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11270-013-1594-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Corriveau Julie Environment Canada, 867 Lakeshore Rd, P.O. Box 5050, L7R 4A6, Burlington, ON, Canada aut NATIONALLICENCE 700 1- Chambers Patricia Environment Canada, 867 Lakeshore Rd, P.O. Box 5050, L7R 4A6, Burlington, ON, Canada aut NATIONALLICENCE 700 1- Culp Joseph Environment Canada and Canadian Rivers Institute @ Department of Biology, University of New Brunswick, 10 Bailey Dr, P.O. Box 4400, E3B 5A3, Fredericton, NB, Canada aut NATIONALLICENCE 773 0- Water, Air, & Soil Pollution Springer Netherlands 224/7(2013-07-01), 1-16 0049-6979 224:7<1 2013 224 11270 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer