Judson W Harvey (Former Employee)
Science and Products
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Comparison of blood aminotransferase methods for assessment of myopathy and hepatopathy in Florida manatees (Trichechus manatus latirostris) Comparison of blood aminotransferase methods for assessment of myopathy and hepatopathy in Florida manatees (Trichechus manatus latirostris)
Muscle injury is common in Florida manatees (Trichechus manatus latirostris). Plasma aspartate amino-transferase (AST) is frequently used to assess muscular damage in capture myopathy and traumatic injury. Therefore, accurate measurement of AST and alanine aminotransferase (ALT) is important in managed, free-ranging animals, as well as in those rehabilitating from injury. Activities of...
Authors
K.E. Harr, K. Allison, R. K. Bonde, D. Murphy, J. W. Harvey
Scaling hyporheic exchange and its influence on biogeochemical reactions in aquatic ecosystems Scaling hyporheic exchange and its influence on biogeochemical reactions in aquatic ecosystems
Hyporheic exchange and biogeochemical reactions are difficult to quantify because of the range in fluid‐flow and sediment conditions inherent to streams, wetlands, and nearshore marine ecosystems. Field measurements of biogeochemical reactions in aquatic systems are impeded by the difficulty of measuring hyporheic flow simultaneously with chemical gradients in sediments. Simplified...
Authors
Ben L. O’Connor, Judson W. Harvey
Ground-based thermography of fluvial systems at low and high discharge reveals potential complex thermal heterogeneity driven by flow variation and bioroughness Ground-based thermography of fluvial systems at low and high discharge reveals potential complex thermal heterogeneity driven by flow variation and bioroughness
Temperature is a primary physical and biogeochemical variable in aquatic systems. Field‐based measurement of temperature at discrete sampling points has revealed temperature variability in fluvial systems, but traditional techniques do not readily allow for synoptic sampling schemes that can address temperature‐related questions with broad, yet detailed, coverage. We present results of...
Authors
M.B. Cardenas, J. W. Harvey, A.I. Packman, D.T. Scott
Advection, dispersion, and filtration of fine particles within emergent vegetation of the Florida Everglades Advection, dispersion, and filtration of fine particles within emergent vegetation of the Florida Everglades
The movement of particulate matter within wetland surface waters affects nutrient cycling, contaminant mobility, and the evolution of the wetland landscape. Despite the importance of particle transport in influencing wetland form and function, there are few data sets that illuminate, in a quantitative way, the transport behavior of particulate matter within surface waters containing...
Authors
Y.H. Huang, J.E. Saiers, J. W. Harvey, G.B. Noe, S. Mylon
The oxygen-18 isotope approach for measuring aquatic metabolism in high-productivity waters The oxygen-18 isotope approach for measuring aquatic metabolism in high-productivity waters
We examined the utility of δ18O2 measurements in estimating gross primary production (P), community respiration (R), and net metabolism (P : R) through diel cycles in a productive agricultural stream located in the midwestern U.S.A. Large diel swings in O2(±200 µmol L−1) were accompanied by large diel variation in δ18O2 (±10‰). Simultaneous gas transfer measurements and laboratory...
Authors
Craig R. Tobias, John Karl Bohlke, Judson W. Harvey
Characterization of suspended particles in Everglades wetlands Characterization of suspended particles in Everglades wetlands
We report the concentration, phosphorus (P) and nitrogen (N) content, and size and chemical fractionation of fine suspended particles (0.2‐100 µm) and colloids (3 kilodalton [kDa]‐0.1 µm) in the surface water of Everglades wetlands along regional and P‐enrichment gradients. Total suspended sediment concentrations ranged from 0.7 to 2.7 mg L−1. Total particulate P concentrations increased...
Authors
Gregory B. Noe, Judson W. Harvey, James E. Saiers
Science and Products
Filter Total Items: 16
No Result Found
Filter Total Items: 121
Comparison of blood aminotransferase methods for assessment of myopathy and hepatopathy in Florida manatees (Trichechus manatus latirostris) Comparison of blood aminotransferase methods for assessment of myopathy and hepatopathy in Florida manatees (Trichechus manatus latirostris)
Muscle injury is common in Florida manatees (Trichechus manatus latirostris). Plasma aspartate amino-transferase (AST) is frequently used to assess muscular damage in capture myopathy and traumatic injury. Therefore, accurate measurement of AST and alanine aminotransferase (ALT) is important in managed, free-ranging animals, as well as in those rehabilitating from injury. Activities of...
Authors
K.E. Harr, K. Allison, R. K. Bonde, D. Murphy, J. W. Harvey
Scaling hyporheic exchange and its influence on biogeochemical reactions in aquatic ecosystems Scaling hyporheic exchange and its influence on biogeochemical reactions in aquatic ecosystems
Hyporheic exchange and biogeochemical reactions are difficult to quantify because of the range in fluid‐flow and sediment conditions inherent to streams, wetlands, and nearshore marine ecosystems. Field measurements of biogeochemical reactions in aquatic systems are impeded by the difficulty of measuring hyporheic flow simultaneously with chemical gradients in sediments. Simplified...
Authors
Ben L. O’Connor, Judson W. Harvey
Ground-based thermography of fluvial systems at low and high discharge reveals potential complex thermal heterogeneity driven by flow variation and bioroughness Ground-based thermography of fluvial systems at low and high discharge reveals potential complex thermal heterogeneity driven by flow variation and bioroughness
Temperature is a primary physical and biogeochemical variable in aquatic systems. Field‐based measurement of temperature at discrete sampling points has revealed temperature variability in fluvial systems, but traditional techniques do not readily allow for synoptic sampling schemes that can address temperature‐related questions with broad, yet detailed, coverage. We present results of...
Authors
M.B. Cardenas, J. W. Harvey, A.I. Packman, D.T. Scott
Advection, dispersion, and filtration of fine particles within emergent vegetation of the Florida Everglades Advection, dispersion, and filtration of fine particles within emergent vegetation of the Florida Everglades
The movement of particulate matter within wetland surface waters affects nutrient cycling, contaminant mobility, and the evolution of the wetland landscape. Despite the importance of particle transport in influencing wetland form and function, there are few data sets that illuminate, in a quantitative way, the transport behavior of particulate matter within surface waters containing...
Authors
Y.H. Huang, J.E. Saiers, J. W. Harvey, G.B. Noe, S. Mylon
The oxygen-18 isotope approach for measuring aquatic metabolism in high-productivity waters The oxygen-18 isotope approach for measuring aquatic metabolism in high-productivity waters
We examined the utility of δ18O2 measurements in estimating gross primary production (P), community respiration (R), and net metabolism (P : R) through diel cycles in a productive agricultural stream located in the midwestern U.S.A. Large diel swings in O2(±200 µmol L−1) were accompanied by large diel variation in δ18O2 (±10‰). Simultaneous gas transfer measurements and laboratory...
Authors
Craig R. Tobias, John Karl Bohlke, Judson W. Harvey
Characterization of suspended particles in Everglades wetlands Characterization of suspended particles in Everglades wetlands
We report the concentration, phosphorus (P) and nitrogen (N) content, and size and chemical fractionation of fine suspended particles (0.2‐100 µm) and colloids (3 kilodalton [kDa]‐0.1 µm) in the surface water of Everglades wetlands along regional and P‐enrichment gradients. Total suspended sediment concentrations ranged from 0.7 to 2.7 mg L−1. Total particulate P concentrations increased...
Authors
Gregory B. Noe, Judson W. Harvey, James E. Saiers