William F. James

Sediment-Overlying Water Relationships Affecting Wintertime Dissolved Oxygen Conditions in the Big Eau Pleine Reservoir, Wisconsin. (1998)

Sediment accretion and composition were examined in vegetated and nonvegetated regions across all depths in Eau Galle Reservoir, Wisconsin. Within riverine areas, delta formation was observed. In the...

James, William F., Gunnison, Douglas, Eakin, Harry L., Barko, John W.

Effects of sediment disturbance and associated chemical oxygen demand on dissolved oxygen (DO) depletion were evaluated during the winters of 1989-1990 in the Big Eau Pleine Reservoir. As part of...

Effects of Convective Hydraulic Circulation on Phosphorus Transport in Aquatic Macrophyte Beds. (1998)

Wind-Induced Sediment Resuspension and Export in Marsh Lake, Western Minnesota. (1998)

Phosphorus (P) dynamics in aquatic macrophyte beds and P exchanges between littoral and pelagic zones, driven by nighttime convective circulation, were examined in Eau Galle Reservoir, Wisconsin,...

Studies of Water Movement in Vegetated and Unvegetated Littoral Areas. (1998)

Budgetary information and sediment resuspension dynamics were determined in Marsh Lake, located on the Minnesota River in western Minnesota. Resuspension and discharge of seston, particulate organic...

Smith, Craig S., James, William F., Barko, John W., Eakin, Harry L.

Water circulation within aquatic plant beds and between plant beds and adjacent open water zones has important implications for both areas. Water movement mediates' the exchange of dissolved and...

Water Operations Technical Support Program. Direct and Indirect Influences of Aquatic Macrophyte Communities on Phosphorus Mobilization from Littoral Sediments of an Inlet Region in Lake Delavan, Wisconsin. (1998)

James, William F., Smith, Craig S., Barko, John W., Field, Stephen

Lake Delavan, Wisconsin, has been the subject of extensive lake restoration to control phosphorus (P) and reverse eutrophication (O'Reillly 1992). Efforts over a 5-year period (1986-1991) to improve...

Internal Phosphorus Loading in Lake Pepin (Minnesota-Wisconsin). (1998)

James, William F., Berko, John W., Eakin, Harry L.

This study examined rates of internal phosphorus (P) loading from sediments in Lake Pepin, a natural impoundment located on the upper Mississippi River. Laboratory determinations of rates of P...

Zebra Mussel Research Technical Notes. Influences of Zebra Mussels on Conditions at the Sediment-Water Interface. Section 1 - Environmental Testing. (1998)

Nutrient Regeneration by Zebra Mussels: Implications for the Phosphorus Budget of Lake Pepin, Upper Mississippi River (1998)

One of the concerns over the invasion of zebra mussels in the Upper Mississippi River (UMR) system is the rapid colonization of these organisms in backwater regions with accompanying changes in...

Filtration and Excretion by Zebra Mussels: Implications for Water Quality Impacts in Lake Pepin, Upper Mississippi River. (1998)

Changes in suspended seston and soluble nutrients were examined as a function of zebra mussel density in flow-through sediment-water microcosms to determine impacts on nutrient recycling. Overall,...

James, William F., Barko, John W., Davis, Mike, Eakin, Harry L., Rogala, James T.

This technical note describes the impacts of filtration and soluble nutrient excretion by zebra mussels on water quality in Lake Pepin, Upper Mississippi River.

Diffusive and Kinetic Fluxes of Phosphorus from Sediments in Relation to Phosphorus Dynamics in Lake Pepin, Upper Mississippi River (1998)

Water Movement in Relation to Fecal Coliform Contamination in the Metro Beach Area of Lake St. Clair, Michigan (1998)

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...

Smith, Craig S., James, William F., Eakin, Harry L., Barko, John W.

The purpose of this investigation was to determine sources of fecal coliform bacteria contaminating the Metro Beach area of Lake St. Clair and the likelihood that water currents moved contaminated...

Sediment Resuspension Dynamics in Canopy- and Meadow-Forming Submersed Macrophyte Communities (1998)

Phosphorus Loading from the Redwood River Basin: Fractionation of Labile and Refractory Components (1998)

We examined the impacts of macrophyte beds dominated by a canopy-forming (Myriophyllum sibiricum) and a meadow-forming (Chara) species on shear stress near the sediment interface and resuspension in...

Direct and Indirect Impacts of Submersed Aquatic Vegetation on the Nutrient Budget of an Urban Oxbow Lake (1998)

The purpose of this demonstration effort was to quantify loading of labile and refractory phosphorus fractions from the agriculturally dominated Redwood River Basin, which drains into the Minnesota...

Enhanced Phosphorus Recycling by Zebra Mussels at High Density Levels in Relation to Food Supply (1998)

The purpose of this research was to quantify direct and indirect contributions to the phosphorus budget of Half Moon Lake, Wisconsin, by submersed aquatic macrophytes.

Loading of Biologically Available Constituents from an Agricultural Subwatershed in the Redwood River Basin, Minnesota (1998)

This technical note examines phosphorus excretion by zebra mussels as a function of zebra mussel density and food availability using laboratory microcosms.

James, William F., Barko, John W., Eakin, Harry L., Eggers, Gregory W.

The purpose of this demonstration effort was to quantify flow and loading of sediment and nutrients from the small, agriculturally dominated Judicial Ditch 31, which drains into the Redwood River of...

Shear Stress and Sediment Resuspension in Canopy-and Meadow-Forming Submersed Macrophyte Communities (1998)

James, William F., Barko, John W., Butler, Malcolm G.

This technical note examines the impact of differing biomass levels and plant architectural types on bottom shear stress and sediment resuspension in shallow systems. Studies were conducted at Lake...

Rehabilitation of a Shallow Lake (Big Muskego Lake, Wisconsin) Via Drawdown: Sediment Response (1998)

Experimental Determination of the Impacts of Sediment Desiccation and Rewetting on Sediment Physical and Chemical Characteristics in Lawrence Lake, Pool 8, Upper Mississippi River (1998)

This technical note examines changes in sediment physical and chemical characteristics as a result of drawdown and refill of shallow Big Muskego Lake (Wisconsin) to promote macrophyte growth....

Suspended Sediment Dynamics and Light Attenuation Characteristics in Peoria Lake, Illinois: Can Submersed Macrophyte Communities Improve Water Quality in this Shallow System (1998)

This technical note examines changes in sediment physical and chemical characteristics due to desiccation and rewetting in laboratory systems. Results from this study may be used to better understand...

James, William F., Best, Elly P., Barko, John W.

We examined sediment resuspension dynamics and light availability in relation to the potential for macrophytes to improve water quality conditions in Peoria Lake, Illinois. The lake exhibited high...

Gridded Surface Subsurface Hydrologic Analysis (GSSHA) Model Simulation of Hydrologic Conditions and Restoration Scenarios for the Judicial Ditch 31 Watershed, Minnesota (1998)

Downer, Charles W., James, William F., Byrd, Aaron, Eggers, Gregory W.

The purpose of this demonstration was to simulate the hydrology of a small, extensively ditched and tiled agricultural watershed located in western Minnesota (Judicial Ditch 31) using the physically...

Longitudinal Gradients in Phosphorus Characteristics in the Minnesota-Upper Mississippi River System (1998)

Management of Eurasian Watermilfoil in Houghton Lake, Michigan: Workshop Summary (1998)

This technical note describes longitudinal patterns in soluble phosphorus and biologically available particulate phosphorus and equilibrium characteristics for suspended sediment collected at...

Getsinger, Kurt D., Poovey, Angela G., James, William F., Stewart, R. Michael, Grodowitz, Michael J.

Houghton Lake is the largest inland water body in Michigan, and as such, is a major ecological and recreational resource for the region. Results of a survey conducted in October 1999 indicated that...

Manipulation of Sediment Nitrogen via Dewatering and Rehydration: Implications for Macrophyte Control and Nitrogen Dissipation (1998)

Phosphorus Forms and Export from Four Sub-Watersheds in the Upper Eau Galle River Basin Exhibiting Differing Land-Use Practices (1998)

This technical note examines macrophyte growth response to changes in sediment nitrogen (N) concentrations due to sediment dewatering and rehydration. Results of this study may be used to better...

Limnological Responses to Changes in the Withdrawal Zone of Eau Galle Reservoir, Wisconsin (1998)

The purpose of this research was to quantify biologically labile and refractory phosphorus constituents, transformations, and export from four sub-watersheds in the Upper Eau Galle River basin...

Phosphorus Loading and Compositional Characteristics in Eight-Mile Run Watershed, Wisconsin (1998)

The purpose of this research was to demonstrate limnological responses to a change in reservoir discharge from a predominantly surface withdrawal in 1991 to a hypolimnetic withdrawal in 2003.

Impacts of Mechanical Macrophyte Removal Devices on Sediment Scouring in Littoral Habitats: I. Historical Survey of Operations in Minnesota Lakes (1998)

The purpose of this research was to describe and quantify biologically labile and refractory phosphorus runoff in Eight-Mile Run, a small watershed in west-central Wisconsin that is impacted by dairy...

James, William F., Wright, David I., Eakin, Harry L., Barko, John W.

The objective of this research was to evaluate the impacts of a mechanical macrophyte removal device on changes in littoral sediment substrate.

Soil Phosphorus Compositional Characteristics as a Function of Land-Use Practice in the Upper Eau Galle River Watershed, Wisconsin (1998)

James, William F., Eakin, Harry L., Ruiz, Carlos E., Barko, John W.

The purpose of this research was to quantify biologically labile and refractory phosphorus species in source soils of an agricultural watershed that drains into a eutrophic Corps of Engineers...

Variations in Field-Scale Nitrogen and Phosphorus Concentrations in Runoff as a Function of Land-Use Practice (1998)

James, William F., Eakin, Harry L., Ruiz, Carlos E., Barko, John W.

The purpose of this research was to examine nitrogen and phosphorus concentrations in runoff at the field-scale level (i.e., homogeneous land-use plot) over a variety of land-use practices. Land-use...

Longitudinal Loading and Nutrient Compositional Gradients in an Agriculturally Managed Watershed in West-Central Wisconsin (1998)

James, William F., Ruiz, Carlos E., Barko, John W., Eakin, Harry L.

The purpose of this research was to describe and quantify biologically labile and refractory nitrogen and phosphorus species, transformations, and loads along the longitudinal axis of a river...

Nutrient Loading Characteristics for Two Sub-watersheds Exhibiting Differing Agricultural Land-Use Practices (1998)

James, William F., Ruiz, Carlos E., Barko, John W.

The purpose of this research was to describe and quantify biologically labile and refractory nitrogen and phosphorus constituents, transformations, and loads in the runoff of two sub-watersheds...

Phosphorous Saturation Characteristics in Relation to Land-Use Practice for Soils in the Upper Eau Galle River Watershed, Wisconsin (1998)

James, William F., Barko, John W., Soballe, David M.

The purpose of this demonstration was to determine relationships between phosphorus saturation characteristics and extractable phosphorus forms in soils from differing land-use practices in an...

Phosphorus Saturation Characteristics in Relation to Land-Use Practice for Soils in the Upper Eau Galle River Watershed, Wisconsin (1998)

James, William F., Barko, John W., Soballe, David M.

The purpose of this demonstration was to determine relationships between phosphorus saturation characteristics and extractable phosphorus forms in soils from differing land-use practices in an...

Experimental Effects of Lime Application on Aquatic Macrophytes: 1. Growth Response Versus Concentration (1998)

Experimental Effects of Lime Application on Aquatic Macrophytes: 2. Growth Response Versus Treatment Time and Lime Concentration (1998)

The research reported herein investigated the effects of a range of lime (as calcium hydroxide; Ca(OH)2) dosage levels on the growth of Sago pondweed in outdoor experimental mesocosms.