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Full-Text Articles in Environmental Sciences

Factors Affecting The Catch And Harvest Rates Of Paddlefish Downstream Of Gavins Point Dam, South Dakota, 2000–2020, William J. Radigan, Seth Fopma, Jason Sorensen, Christopher M. Longhenry Jan 2022

Factors Affecting The Catch And Harvest Rates Of Paddlefish Downstream Of Gavins Point Dam, South Dakota, 2000–2020, William J. Radigan, Seth Fopma, Jason Sorensen, Christopher M. Longhenry

School of Natural Resources: Faculty Publications

Paddlefish, Polyodon spathula (Walbaum), provide an important snagging and bowfishing fishery below Gavins Point Dam in South Dakota. During 2009–2020, snagging catch rates of paddlefish decreased below Gavins Point Dam to presumed “normal” lower pre-2004 levels, while bowfishing catch (harvest) rates significantly increased during 2000–2020. Because Paddlefish are highly migratory, both local (i.e., monthly gauge height, precipitation, and air temperature near Gavins Point Dam) and remote (difference in Mississippi and Missouri River discharge near their confluence) environmental conditions were used to explain variation in snagging catch rates and bowfishing harvest rates. Snagging catch rates were related to October gauge height, …


Rehabilitate Failing Park Sewage System Environmental Assessment, United States Department Of The Interior, National Park Service Jan 2010

Rehabilitate Failing Park Sewage System Environmental Assessment, United States Department Of The Interior, National Park Service

Environmental Assessments (UT)

The National Park Service (NPS) proposes to rehabilitate the failing sewage system within Bryce Canyon National Park, Utah. The rehabilitation would provide a safe, healthy, and functional environment, and maintain public health and future service for park visitors and staff. Portions of the sanitary sewage collection system were originally constructed in 1958 of clay pipe and currently service the lodge, staff housing, and visitor center before feeding into sewage treatment lagoons. Sections of the sewage system have deteriorated significantly with age. These sections of the system and appurtenant manholes are deteriorating into pieces that regularly clog the system and cause …


Environmental And Physiological Effects On Water Use Of Cereal Crops, Joon Kim Mar 1986

Environmental And Physiological Effects On Water Use Of Cereal Crops, Joon Kim

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.


Environmental And Physiological Effects On The Carbon Exchange Rate And Water Use Efficiency Of Alfalfa, Dennis D. Baldocchi Jul 1979

Environmental And Physiological Effects On The Carbon Exchange Rate And Water Use Efficiency Of Alfalfa, Dennis D. Baldocchi

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.