caa a22 4500 463209036 CHVBK 20180405153134.0 cr unu---uuuuu 170326e20070701xx s 000 0 eng 10.1007/s10705-007-9088-4 doi (NATIONALLICENCE)springer-10.1007/s10705-007-9088-4 Phosphorus uptake during four years by different vegetative cover types in a riparian buffer [Elektronische Daten] [J. Kelly, J. Kovar, R. Sokolowsky, T. Moorman] Vegetative buffers have been shown to reduce nutrient loss associated with the transport of detached soil particles and may through plant uptake offer a means to capture dissolved nutrients moving to surface waters through the soil solution. The objective of this 4-year study was to evaluate changes in the biomass and P content of the roots and shoots of plants growing in a multi-species versus a single species riparian buffer as an index of P capture potential. Periodic harvests of above ground vegetation were combined with root cores to estimate the total standing biomass and the pool of P in plant tissue in three vegetative cover types dominated by either switchgrass (Panicum virgatum L.), an alfalfa (Medicago sativa L.)-smooth bromegrass (Bromis inermis Leyss) mix, or a fast growing superior cottonwood (Populus deltoids Bartr., clone 42-7). An existing stand of smooth brome served as the single species control. Standing biomass increased in all three cover types during the 4years of study, with the greatest increases observed in the cottonwood (2345gm−2) and switchgrass (1818gm−2). Biomass production in the smooth brome control did not change during the study period. Based on the 4th-year samples, standing pools of P closely paralleled total plant biomass and root surface area with cottonwood accumulating the greatest amount of P at 19.4gm−2 compared to 4.3gm−2 for the smooth brome control. Estimates of potential P export via biomass harvest from a mixed buffer over a 4-year interval were 101kgha−1 compared to 62kgha−1 for the smooth brome control; a 63% increase in export capacity due largely to the inclusion of cottonwood. Addition of a fast growing woody species combined with periodic biomass harvests has the potential to reduce P movement to surface waters. Springer Science+Business Media B.V., 2007 Cottonwood nationallicence Phosphorus nationallicence Plant biomass nationallicence Smooth Brome nationallicence Switchgrass nationallicence Kelly J. Natural Resource Ecology and Management Department, Iowa State University, 50011-1021, Ames, IA, USA aut Kovar J. USDA-ARS National Soil Tilth Laboratory, Iowa State University, 50011-4420, Ames, IA, USA aut Sokolowsky R. Natural Resource Ecology and Management Department, Iowa State University, 50011-1021, Ames, IA, USA aut Moorman T. USDA-ARS National Soil Tilth Laboratory, Iowa State University, 50011-4420, Ames, IA, USA aut Nutrient Cycling in Agroecosystems Kluwer Academic Publishers 78/3(2007-07-01), 239-251 1385-1314 78:3<239 2007 78 10705 https://doi.org/10.1007/s10705-007-9088-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10705-007-9088-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kelly J. Natural Resource Ecology and Management Department, Iowa State University, 50011-1021, Ames, IA, USA aut NATIONALLICENCE 700 1- Kovar J. USDA-ARS National Soil Tilth Laboratory, Iowa State University, 50011-4420, Ames, IA, USA aut NATIONALLICENCE 700 1- Sokolowsky R. Natural Resource Ecology and Management Department, Iowa State University, 50011-1021, Ames, IA, USA aut NATIONALLICENCE 700 1- Moorman T. USDA-ARS National Soil Tilth Laboratory, Iowa State University, 50011-4420, Ames, IA, USA aut NATIONALLICENCE 773 0- Nutrient Cycling in Agroecosystems Kluwer Academic Publishers 78/3(2007-07-01), 239-251 1385-1314 78:3<239 2007 78 10705 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer