Victoria Glenn Christensen, PhD (Former Employee)
Science and Products
Filter Total Items: 52
Relations between retired agricultural land, water quality, and aquatic-community health, Minnesota River Basin Relations between retired agricultural land, water quality, and aquatic-community health, Minnesota River Basin
The relative importance of agricultural land retirement on water quality and aquatic-community health was investigated in the Minnesota River Basin. Eighty-two sites, with drainage areas ranging from 4.3 to 2200 km2, were examined for nutrient concentrations, measures of aquatic-community health (e.g., fish index of biotic integrity [IBI] scores), and environmental factors (e.g...
Authors
Victoria G. Christensen, Kathy Lee, James M. McLees, Scott L. Niemela
Relation of nutrient concentrations, nutrient loading, and algal production to changes in water levels in Kabetogama Lake, Voyageurs National Park, northern Minnesota, 2008-09 Relation of nutrient concentrations, nutrient loading, and algal production to changes in water levels in Kabetogama Lake, Voyageurs National Park, northern Minnesota, 2008-09
Nutrient enrichment has led to excessive algal growth in Kabetogama Lake, Voyageurs National Park, northern Minnesota. Water- and sediment-quality data were collected during 2008-09 to assess internal and external nutrient loading. Data collection was focused in Kabetogama Lake and its inflows, the area of greatest concern for eutrophication among the lakes of Voyageurs National Park...
Authors
Victoria G. Christensen, Ryan P. Maki, Richard L. Kiesling
In-stream water-quality estimation: Case studies in real-time stream and lake monitoring in the central USA In-stream water-quality estimation: Case studies in real-time stream and lake monitoring in the central USA
Five U.S. Geological Survey case studies in real-time stream and lake monitoring are presented. The emphases of the case studies are in-stream biological characteristics, fecal coliform bacteria, atrazine, phosphorus, and taste-and-odor compounds.
Authors
Victoria G. Christensen, Andrew C. Ziegler, Jennifer L. Graham, Rachel A. Esralew
Water quality (2000-08) and historical phosphorus concentrations from paleolimnological studies of Swamp and Speckled Trout Lakes, Grand Portage Reservation, northeastern Minnesota Water quality (2000-08) and historical phosphorus concentrations from paleolimnological studies of Swamp and Speckled Trout Lakes, Grand Portage Reservation, northeastern Minnesota
A paleolimnological approach was taken to aid the Grand Portage Reservation, in northeastern Minnesota, in determining reference conditions for lakes on the reservation. The U.S. Geological Survey, in cooperation with the Grand Portage Band of Chippewa Indians and the Science Museum of Minnesota, conducted a study to describe water quality (2000-08) and historical total phosphorus...
Authors
Victoria G. Christensen, Perry M. Jones, Mark B. Edlund, Joy M. Ramstack
Water-Quality and Biological Characteristics and Responses to Agricultural Land Retirement in Three Streams of the Minnesota River Basin, Water Years 2006-08 Water-Quality and Biological Characteristics and Responses to Agricultural Land Retirement in Three Streams of the Minnesota River Basin, Water Years 2006-08
Water-quality and biological characteristics in three streams in the Minnesota River Basin were assessed using data collected during water years 2006-08. The responses of nutrient concentrations, suspended-sediment concentrations, and biological characteristics to agricultural land retirement also were assessed. In general, total nitrogen, suspended-sediment, and chlorophyll-a...
Authors
Victoria G. Christensen, Kathy Lee, Christopher A. Sanocki, Eric H. Mohring, Richard L. Kiesling
Estimated Nutrient Concentrations and Continuous Water-Quality Monitoring in the Eucha-Spavinaw Basin, Northwestern Arkansas and Northeastern Oklahoma, 2004-2007 Estimated Nutrient Concentrations and Continuous Water-Quality Monitoring in the Eucha-Spavinaw Basin, Northwestern Arkansas and Northeastern Oklahoma, 2004-2007
The Eucha-Spavinaw basin is the source of water for Lake Eucha and Spavinaw Lake, which are part of the water supply for the City of Tulsa. The City of Tulsa has received complaints of taste and odor in the finished drinking water because of deteriorating water quality. The deterioration is largely because of algal growth from the input of nutrients from the Eucha-Spavinaw basin. The U.S
Authors
Victoria G. Christensen, Rachel A. Esralew, Monica L. Allen
Science and Products
Filter Total Items: 52
Relations between retired agricultural land, water quality, and aquatic-community health, Minnesota River Basin Relations between retired agricultural land, water quality, and aquatic-community health, Minnesota River Basin
The relative importance of agricultural land retirement on water quality and aquatic-community health was investigated in the Minnesota River Basin. Eighty-two sites, with drainage areas ranging from 4.3 to 2200 km2, were examined for nutrient concentrations, measures of aquatic-community health (e.g., fish index of biotic integrity [IBI] scores), and environmental factors (e.g...
Authors
Victoria G. Christensen, Kathy Lee, James M. McLees, Scott L. Niemela
Relation of nutrient concentrations, nutrient loading, and algal production to changes in water levels in Kabetogama Lake, Voyageurs National Park, northern Minnesota, 2008-09 Relation of nutrient concentrations, nutrient loading, and algal production to changes in water levels in Kabetogama Lake, Voyageurs National Park, northern Minnesota, 2008-09
Nutrient enrichment has led to excessive algal growth in Kabetogama Lake, Voyageurs National Park, northern Minnesota. Water- and sediment-quality data were collected during 2008-09 to assess internal and external nutrient loading. Data collection was focused in Kabetogama Lake and its inflows, the area of greatest concern for eutrophication among the lakes of Voyageurs National Park...
Authors
Victoria G. Christensen, Ryan P. Maki, Richard L. Kiesling
In-stream water-quality estimation: Case studies in real-time stream and lake monitoring in the central USA In-stream water-quality estimation: Case studies in real-time stream and lake monitoring in the central USA
Five U.S. Geological Survey case studies in real-time stream and lake monitoring are presented. The emphases of the case studies are in-stream biological characteristics, fecal coliform bacteria, atrazine, phosphorus, and taste-and-odor compounds.
Authors
Victoria G. Christensen, Andrew C. Ziegler, Jennifer L. Graham, Rachel A. Esralew
Water quality (2000-08) and historical phosphorus concentrations from paleolimnological studies of Swamp and Speckled Trout Lakes, Grand Portage Reservation, northeastern Minnesota Water quality (2000-08) and historical phosphorus concentrations from paleolimnological studies of Swamp and Speckled Trout Lakes, Grand Portage Reservation, northeastern Minnesota
A paleolimnological approach was taken to aid the Grand Portage Reservation, in northeastern Minnesota, in determining reference conditions for lakes on the reservation. The U.S. Geological Survey, in cooperation with the Grand Portage Band of Chippewa Indians and the Science Museum of Minnesota, conducted a study to describe water quality (2000-08) and historical total phosphorus...
Authors
Victoria G. Christensen, Perry M. Jones, Mark B. Edlund, Joy M. Ramstack
Water-Quality and Biological Characteristics and Responses to Agricultural Land Retirement in Three Streams of the Minnesota River Basin, Water Years 2006-08 Water-Quality and Biological Characteristics and Responses to Agricultural Land Retirement in Three Streams of the Minnesota River Basin, Water Years 2006-08
Water-quality and biological characteristics in three streams in the Minnesota River Basin were assessed using data collected during water years 2006-08. The responses of nutrient concentrations, suspended-sediment concentrations, and biological characteristics to agricultural land retirement also were assessed. In general, total nitrogen, suspended-sediment, and chlorophyll-a...
Authors
Victoria G. Christensen, Kathy Lee, Christopher A. Sanocki, Eric H. Mohring, Richard L. Kiesling
Estimated Nutrient Concentrations and Continuous Water-Quality Monitoring in the Eucha-Spavinaw Basin, Northwestern Arkansas and Northeastern Oklahoma, 2004-2007 Estimated Nutrient Concentrations and Continuous Water-Quality Monitoring in the Eucha-Spavinaw Basin, Northwestern Arkansas and Northeastern Oklahoma, 2004-2007
The Eucha-Spavinaw basin is the source of water for Lake Eucha and Spavinaw Lake, which are part of the water supply for the City of Tulsa. The City of Tulsa has received complaints of taste and odor in the finished drinking water because of deteriorating water quality. The deterioration is largely because of algal growth from the input of nutrients from the Eucha-Spavinaw basin. The U.S
Authors
Victoria G. Christensen, Rachel A. Esralew, Monica L. Allen