caa a22 4500 605517606 CHVBK 20210128100720.0 cr unu---uuuuu 210128e20150801xx s 000 0 eng 10.1007/s10533-015-0114-3 doi (NATIONALLICENCE)springer-10.1007/s10533-015-0114-3 The fingerprints of urban nutrients: dynamics of phosphorus speciation in water flowing through developed landscapes [Elektronische Daten] [Keunyea Song, Marguerite Xenopoulos, Jiri Marsalek, Paul Frost] As urban ecosystems are known to be phosphorus (P)-rich environments, the sources of this nutrient and its biogeochemistry within human-dominated landscapes remain in need of study. Specifically, very little is known about how different P species vary within and among urban aquatic environments. In this study, we examined the phosphorus dynamics in urban stormwater ponds that are embedded in residential landscapes. Water samples were collected from stormwater ponds located in southern Ontario, Canada during the summer of 2012. We measured several P types: total P; TP, particulate P; PP, and dissolved inorganic P; DIP as well as two classes of DOP (phosphomonoesters (MP) and phosphodiesters (DP)) in the surface water samples. In most ponds, PP in outflowing water were found at concentrations higher (up to 12 times) than those measured in incoming stormwater. With respect to DOP, DP increased and became more abundant in outflowing compared to inflowing waters while MP concentrations decreased within ponds. The magnitude of these spatial changes from pond inlets to outlets was strongly linked to recent periods of rainfall and the hydrological condition of pond inflows. Elevated MP was found adjacent to inlets especially during periods of more frequent rainfall, which indicates that MP is derived from terrestrial sources and delivered by stormwater. In contrast, DP production was more related to internal biological activity in ponds as its concentrations increased during relatively dry conditions with low stormwater flow. Our results demonstrate that stormwater ponds have significant influence on the quantity and types of P moving through these highly human-modified environments. Springer International Publishing Switzerland, 2015 Phosphorus speciation nationallicence Dissolved organic phosphorus nationallicence Stormwater pond nationallicence Microbial activity nationallicence Internal loading nationallicence Song Keunyea Department of Biology, Trent University, Peterborough, ON, Canada aut Xenopoulos Marguerite Department of Biology, Trent University, Peterborough, ON, Canada aut Marsalek Jiri National Water Research Institute, Burlington, ON, Canada aut Frost Paul Department of Biology, Trent University, Peterborough, ON, Canada aut Biogeochemistry Springer International Publishing 125/1(2015-08-01), 1-10 0168-2563 125:1<1 2015 125 10533 https://doi.org/10.1007/s10533-015-0114-3 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 review-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10533-015-0114-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Song Keunyea Department of Biology, Trent University, Peterborough, ON, Canada aut NATIONALLICENCE 700 1- Xenopoulos Marguerite Department of Biology, Trent University, Peterborough, ON, Canada aut NATIONALLICENCE 700 1- Marsalek Jiri National Water Research Institute, Burlington, ON, Canada aut NATIONALLICENCE 700 1- Frost Paul Department of Biology, Trent University, Peterborough, ON, Canada aut NATIONALLICENCE 773 0- Biogeochemistry Springer International Publishing 125/1(2015-08-01), 1-10 0168-2563 125:1<1 2015 125 10533