TILLFÖRSEL AV NÄRSALTER TILL KUSTVATTEN – EN STUDIE AV TRANSPORT OCH RETENTION I VADSBÄCKEN, ÖSTERGÖTLAND / Diffuse Pollution of Coastal Waters – a Study of Nutrient Transport and Retention in a Small Watershed of Southern Sweden
Transport and retention of nitrogen and phosphorus was studied in a small (51 km2), agricultural watershed in southern Sweden. The article deals predominantly with: – comparison of different methods for nutrient transport calculation; – estimation of nutrient retention in a meandering part of the stream; – analysis of two similar tributaries with different nutrient transport. The sampling strategy was of great importance for the estimation of nutrient transport. A single high-flow event (5-day duration) generated approximately 50 % of the annual transport of both nitrogen and phosphorus. The results confirm the importance of intensified sampling during spring and autumn, when occasions with high nutrient concentrations often coincide with high flow. “Complete abstract not presented.”