caa a22 4500 445891858 CHVBK 20180317145619.0 cr unu---uuuuu 170323e20110201xx s 000 0 eng 10.1007/s10750-010-0411-8 doi (NATIONALLICENCE)springer-10.1007/s10750-010-0411-8 Phosphorus retention as a function of external loading, hydraulic turnover time, area and relative depth in 54 lakes and reservoirs [Elektronische Daten] [Toomas Kõiv, Tiina Nõges, Alo Laas] We analysed phosphorus retention as a function of external loading, hydraulic turnover time, area and relative depth on the basis of published data from 54 lakes and reservoirs in different climate regions around the world. Our analysis demonstrated that reservoirs and lakes that received higher areal loading of phosphorus (TPin) also retained more P per m2 but the proportion of the external P loading retained in the waterbody (retention coefficient, R P) remained generally independent of TPin. The waterbodies with longer hydraulic residence times (T R) retained larger proportions of external P and the correlation between R P and T R was much stronger in lakes with areas larger than 25km2 than in the whole data set. TPin and T R together determined 78% of the variation in R P in large lakes. We also partially confirmed our hypothesis that waterbodies with bigger relative depths (Z R) retain more of the external phosphorus than larger and shallower waterbodies with lower Z R. The hypothesis was, however, validated only for lakes larger than 25km2 and for those with T R <0.3year, where R P increased significantly with increasing Z R. In stratified lakes, increasing relative depth correlated with reduced P retention capacity, demonstrating the complex nature of phosphorus biogeochemistry in lake ecosystems. Springer Science+Business Media B.V., 2010 Phosphorus retention nationallicence Phosphorus mass balance nationallicence Lake morphometry nationallicence Relative depth nationallicence Kõiv Toomas Centre for Limnology, Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Rannu Parish, 61117, Tartu County, Estonia aut Nõges Tiina Centre for Limnology, Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Rannu Parish, 61117, Tartu County, Estonia aut Laas Alo Centre for Limnology, Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Rannu Parish, 61117, Tartu County, Estonia aut Hydrobiologia Springer Netherlands 660/1(2011-02-01), 105-115 0018-8158 660:1<105 2011 660 10750 https://doi.org/10.1007/s10750-010-0411-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10750-010-0411-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kõiv Toomas Centre for Limnology, Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Rannu Parish, 61117, Tartu County, Estonia aut NATIONALLICENCE 700 1- Nõges Tiina Centre for Limnology, Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Rannu Parish, 61117, Tartu County, Estonia aut NATIONALLICENCE 700 1- Laas Alo Centre for Limnology, Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Rannu Parish, 61117, Tartu County, Estonia aut NATIONALLICENCE 773 0- Hydrobiologia Springer Netherlands 660/1(2011-02-01), 105-115 0018-8158 660:1<105 2011 660 10750 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer