caa a22 4500 445894075 CHVBK 20180317145626.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1007/s10750-011-0825-y doi (NATIONALLICENCE)springer-10.1007/s10750-011-0825-y Transition zones in small lakes: the importance of dilution and biological uptake on lake-wide heterogeneity [Elektronische Daten] [Eleanor Mackay, Ian Jones, Andrew Folkard, Stephen Thackeray] Stream inflows are frequently the dominant route for nutrients from catchments to lakes. Studies on large, deep reservoirs and lakes have shown the importance of the fate of inflow plumes for nutrient accessibility to phytoplankton. However, few studies have considered shallow water transition zones between streams and lakes, often a feature of small lakes. This study examined the spatial and temporal dynamics of phosphorus in a shallow stream-lake transition in a small lake to improve our understanding of how phosphorus reaches the pelagic zone. Despite the high discharge levels, and the importance of dilution in explaining observed spatial gradients in soluble reactive phosphorus (SRP), total phosphorus (TP) and chlorophyll a, we found evidence for significant biological uptake of SRP in the inflow embayment during the growing season. This may represent an additional mechanism for the dispersal of phosphorus from the embayment into the lake. The length scale for the transition zone was short (~150m) which indicated that the direct influence of the inflow on the wider lake was small. However, SRP measurements taken only from the pelagic site underestimated mean lake-wide concentrations when including transition zones by up to 18% during the growing season. Springer Science+Business Media B.V., 2011 Inflows nationallicence Transition zone nationallicence SRP nationallicence Chlorophyll a nationallicence Nutrient delivery nationallicence Esthwaite Water nationallicence Mackay Eleanor Centre for Sustainable Water Management, Lancaster Environment Centre, Lancaster University, LA1 4YQ, Lancaster, UK aut Jones Ian Lake Ecosystem Group, Centre for Ecology & Hydrology, Lancaster Environment Centre, Bailrigg, LA1 4AP, Lancaster, UK aut Folkard Andrew Centre for Sustainable Water Management, Lancaster Environment Centre, Lancaster University, LA1 4YQ, Lancaster, UK aut Thackeray Stephen Lake Ecosystem Group, Centre for Ecology & Hydrology, Lancaster Environment Centre, Bailrigg, LA1 4AP, Lancaster, UK aut Hydrobiologia Springer Netherlands 678/1(2011-12-01), 85-97 0018-8158 678:1<85 2011 678 10750 https://doi.org/10.1007/s10750-011-0825-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10750-011-0825-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mackay Eleanor Centre for Sustainable Water Management, Lancaster Environment Centre, Lancaster University, LA1 4YQ, Lancaster, UK aut NATIONALLICENCE 700 1- Jones Ian Lake Ecosystem Group, Centre for Ecology & Hydrology, Lancaster Environment Centre, Bailrigg, LA1 4AP, Lancaster, UK aut NATIONALLICENCE 700 1- Folkard Andrew Centre for Sustainable Water Management, Lancaster Environment Centre, Lancaster University, LA1 4YQ, Lancaster, UK aut NATIONALLICENCE 700 1- Thackeray Stephen Lake Ecosystem Group, Centre for Ecology & Hydrology, Lancaster Environment Centre, Bailrigg, LA1 4AP, Lancaster, UK aut NATIONALLICENCE 773 0- Hydrobiologia Springer Netherlands 678/1(2011-12-01), 85-97 0018-8158 678:1<85 2011 678 10750 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer