Author: Sharon Elizabeth KroeningPublisher:
ISBN:
Category : Water
Languages : en
Pages : 440
Book Description
Phosphorus Trends in the Upper Mississippi Basin
Author: Sharon Elizabeth KroeningPublisher:
ISBN:
Category : Water
Languages : en
Pages : 440
Book Description
Water-quality Assessment of Part of the Upper Mississippi River Basin, Minnesota and Wisconsin
Author: Sharon E. KroeningPublisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 76
Book Description
Nutrients in the Upper Mississippi River
Author: Publisher:
ISBN:
Category : Electronic government information
Languages : en
Pages : 6
Book Description
Variability of Nutrients in Streams in Part of the Upper Mississippi River Basin, Minnesota and Wisconsin
Author: Sharon E. KroeningPublisher:
ISBN:
Category : Nitrates
Languages : en
Pages : 4
Book Description
Trends in Nutrient Concentration and Load for Streams in the Mississippi River Basin, 1974-94
Author: Dee L. LurryPublisher:
ISBN:
Category : Nutrient pollution of water
Languages : en
Pages : 68
Book Description
Flux and Sources of Nutrients in the Mississippi-Atchafalaya River Basin
Author: Publisher:
ISBN:
Category : Marine eutrophication
Languages : en
Pages : 152
Book Description
Lake Pepin Phosphorus Study, 1994-1998
Author: Diffusive and Kinetic Fluxes of Phosphorus from Sediments in Relation to Phosphorus Dynamics in Lake Pepin, Upper Mississippi River
Author: William F. JamesPublisher:
ISBN:
Category : Eutrophication
Languages : en
Pages : 48
Book Description
Diffusive and Kinetic Fluxes of Phosphorus from Sediments in Relation to Phosphorus Dynamics in Lake Pepin, Upper Mississippi River
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Over a 3-year period (1994-96), suspended seston and phosphorus (P) dynamics were examined in the Upper Mississippi River (UMR) and naturally impounded Lake Pepin, with special attention to external and internal P loading processes that may be contributing to deteriorating water quality conditions. The Minnesota River accounted for most of the annual and summer suspended seston (^81 %) and total phosphorus (^44 %) load, while the Metropolitan Wastewater Treatment Plant (Metro Plant) accounted for ^18 % of annual soluble reactive phosphorus (SRP) loading to the UMR. External loading during the summer of suspended seston, total P, and SRP to Lake Pepin averaged ^30,000/m2/day, and ^60 mg/m2/day, respectively. The lake retained a substantial portion of the summer suspended seston load and was also a sink for total P. While total P concentrations generally declined in Lake Pepin from headwaters to outflow, SRP exhibited a trend of increasing concentration from headwaters to outflow with net SRP export during the summer. These contrasting patterns in total P and SRP indicated the occurrence of internal P loading and/or transformations in the water column of P from particulate to soluble phases. Internal diffusive P flux from profundal sediments, estimated from laboratory incubation systems under different temperature and redox conditions, averaged ^7.5 mg/m2/day during the summer under predominately oxic conditions over all years. Although this oxic rate was high relative to other eutrophic lakes, it accounted for
Diffusive and Kinetic Fluxes of Phosphorus from Sediments in Relation to Phosphorus Dynamics in Lake Pepin, Upper Mississippi River
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Over a 3-year period (1994-96), suspended seston and phosphorus (P) dynamics were examined in the Upper Mississippi River (UMR) and naturally impounded Lake Pepin, with special attention to external and internal P loading processes that may be contributing to deteriorating water quality conditions. The Minnesota River accounted for most of the annual and summer suspended seston (81 %) and total phosphorus (44 %) load, while the Metropolitan Wastewater Treatment Plant (Metro Plant) accounted for 18 % of annual soluble reactive phosphorus (SRP) loading to the UMR. External loading during the summer of suspended seston, total P, and SRP to Lake Pepin averaged 30,000/m2/day, and 60 mg/m2/day, respectively. The lake retained a substantial portion of the summer suspended seston load and was also a sink for total P. While total P concentrations generally declined in Lake Pepin from headwaters to outflow, SRP exhibited a trend of increasing concentration from headwaters to outflow with net SRP export during the summer. These contrasting patterns in total P and SRP indicated the occurrence of internal P loading and/or transformations in the water column of P from particulate to soluble phases. Internal diffusive P flux from profundal sediments, estimated from laboratory incubation systems under different temperature and redox conditions, averaged 7.5 mg/m2/day during the summer under predominately oxic conditions over all years. Although this oxic rate was high relative to other eutrophic lakes, it accounted for