dc.contributor.author | Kerr, Jason G | |
dc.contributor.author | Burford, Michele | |
dc.contributor.author | Olley, Jon | |
dc.contributor.author | Udy, James | |
dc.date.accessioned | 2017-05-03T11:47:29Z | |
dc.date.available | 2017-05-03T11:47:29Z | |
dc.date.issued | 2011 | |
dc.date.modified | 2013-05-29T02:49:09Z | |
dc.identifier.issn | 0168-2563 | |
dc.identifier.doi | 10.1007/s10533-010-9422-9 | |
dc.identifier.uri | http://hdl.handle.net/10072/36837 | |
dc.description.abstract | Phosphorus (P) is often a key limiting nutrient in freshwater systems, and excessive P can result in algal blooms, with flow-on effects to aquatic food webs. P sorption is an important process in aquatic and terrestrial ecosystems whereby phosphate (PO4 3-) is exchanged between liquid and solid phases. This study shows that differences in the concentration of PO4 3- in a subtropical river system during high and low flow can be attributed to differences in P sorption characterises of its catchment soils and sediments. The sediments have lower Equilibrium Phosphate Concentrations (EPC0) and higher binding energy (Kd); the surface soils have higher EPC0 and higher easily desorbed P (NH4Cl-P). A comparison of filterable reactive phosphorus (frP) in water samples collected at high and low flows, with soil and sediment EPC0, suggested that during event flows, the high EPC0 and NH4Cl-P of surface soils is producing a net movement of PO4 3- from the soil/sediment system into runoff and stream flow. At baseflow, there is more likely a net movement of PO4 3- into the riverbed sediments. This has important implications for management actions aimed at reducing P loads to river systems and downstream water storages, namely the need to increase the infiltration of rainfall to decrease the amount of PO4 3- being flushed from the surface soil. | |
dc.description.peerreviewed | Yes | |
dc.description.publicationstatus | Yes | |
dc.language | English | |
dc.language.iso | eng | |
dc.publisher | Springer | |
dc.publisher.place | Netherlands | |
dc.relation.ispartofstudentpublication | N | |
dc.relation.ispartofpagefrom | 73 | |
dc.relation.ispartofpageto | 85 | |
dc.relation.ispartofissue | 1-3 | |
dc.relation.ispartofjournal | Biogeochemistry | |
dc.relation.ispartofvolume | 102 | |
dc.rights.retention | Y | |
dc.subject.fieldofresearch | Other chemical sciences | |
dc.subject.fieldofresearch | Geochemistry | |
dc.subject.fieldofresearch | Ecology not elsewhere classified | |
dc.subject.fieldofresearch | Environmental management | |
dc.subject.fieldofresearchcode | 3499 | |
dc.subject.fieldofresearchcode | 3703 | |
dc.subject.fieldofresearchcode | 310399 | |
dc.subject.fieldofresearchcode | 4104 | |
dc.title | Phosphorus sorption in soils and sediments: implications for phosphate supply to a subtropical river in southeast Queensland, Australia | |
dc.type | Journal article | |
dc.type.description | C1 - Articles | |
dc.type.code | C - Journal Articles | |
gro.faculty | Griffith Sciences, Griffith School of Environment | |
gro.date.issued | 2011 | |
gro.hasfulltext | No Full Text | |
gro.griffith.author | Burford, Michele A. | |
gro.griffith.author | Olley, Jon M. | |