Teresa J Newton, PhD (Former Employee)
Science and Products
Filter Total Items: 13
Filter Total Items: 54
Effect of imperfect detectability on adaptive and conventional sampling: Simulated sampling of freshwater mussels in the upper Mississippi River Effect of imperfect detectability on adaptive and conventional sampling: Simulated sampling of freshwater mussels in the upper Mississippi River
Adaptive sampling designs are recommended where, as is typical with freshwater mussels, the outcome of interest is rare and clustered. However, the performance of adaptive designs has not been investigated when outcomes are not only rare and clustered but also imperfectly detected. We address this combination of challenges using data simulated to mimic properties of freshwater mussels...
Authors
D. R. Smith, B. R. Gray, T.J. Newton, D. Nichols
Hydrodynamic modeling of juvenile mussel dispersal in a large river: The potential effects of bed shear stress and other parameters Hydrodynamic modeling of juvenile mussel dispersal in a large river: The potential effects of bed shear stress and other parameters
Because unionid mussels have a parasitic larval stage, they are able to disperse upstream and downstream as larvae while attached to their host fish and with flow as juveniles after excystment from the host. Understanding unionid population ecology requires knowledge of the processes that affect juvenile dispersal prior to establishment. We examined presettlement (transport and...
Authors
J.A. Daraio, L.J. Weber, T.J. Newton
Influence of shell morphology on distributions of unionids in the upper Mississippi River Influence of shell morphology on distributions of unionids in the upper Mississippi River
Attempts to predict the distribution of unionids from readily measurable microhabitat descriptors (i.e. water depth, current velocity, stream size, sediment type) have been largely unsuccessful, but certain biological and calculated hydraulic variables have recently shown some predictive power. We used historic and recent data on unionids (from 1987 to 2003) and hydraulic conditions at...
Authors
M.R. Bartsch, S. J. Zigler, T.J. Newton, J.S. Sauer
Characteristics of a refuge for native freshwater mussels (Bivalvia: Unionidae) in Lake St. Clair Characteristics of a refuge for native freshwater mussels (Bivalvia: Unionidae) in Lake St. Clair
The Lake St. Clair delta (??? 100??km2) provides an important refuge for native freshwater mussels (Unionidae) wherein 22 of the ??? 35 historical species co-occur with invasive dreissenids. A total of 1875 live unionids representing 22 species were found during snorkeling surveys of 32 shallow (??? 1??m) sites throughout the delta. Richness and density of unionids and zebra mussel...
Authors
D.J. McGoldrick, J. L. Metcalfe-Smith, M.T. Arts, D. W. Schloesser, T.J. Newton, G.L. Mackie, E.M. Monroe, J. Biberhofer, Kevin Johnson
Fish movement and habitat use depends on water body size and shape Fish movement and habitat use depends on water body size and shape
Home ranges are central to understanding habitat diversity, effects of fragmentation and conservation. The distance that an organism moves yields information on life history, genetics and interactions with other organisms. Present theory suggests that home range is set by body size of individuals. Here, we analyse estimates of home ranges in lakes and rivers to show that body size of...
Authors
D.A. Woolnough, J. A. Downing, T.J. Newton
Importance of physical and hydraulic characteristics to unionid mussels: A retrospective analysis in a reach of large river Importance of physical and hydraulic characteristics to unionid mussels: A retrospective analysis in a reach of large river
Interest in understanding physical and hydraulic factors that might drive distribution and abundance of freshwater mussels has been increasing due to their decline throughout North America. We assessed whether the spatial distribution of unionid mussels could be predicted from physical and hydraulic variables in a reach of the Upper Mississippi River. Classification and regression tree...
Authors
S. J. Zigler, T.J. Newton, J. J. Steuer, M.R. Bartsch, J.S. Sauer
Science and Products
Filter Total Items: 13
Filter Total Items: 54
Effect of imperfect detectability on adaptive and conventional sampling: Simulated sampling of freshwater mussels in the upper Mississippi River Effect of imperfect detectability on adaptive and conventional sampling: Simulated sampling of freshwater mussels in the upper Mississippi River
Adaptive sampling designs are recommended where, as is typical with freshwater mussels, the outcome of interest is rare and clustered. However, the performance of adaptive designs has not been investigated when outcomes are not only rare and clustered but also imperfectly detected. We address this combination of challenges using data simulated to mimic properties of freshwater mussels...
Authors
D. R. Smith, B. R. Gray, T.J. Newton, D. Nichols
Hydrodynamic modeling of juvenile mussel dispersal in a large river: The potential effects of bed shear stress and other parameters Hydrodynamic modeling of juvenile mussel dispersal in a large river: The potential effects of bed shear stress and other parameters
Because unionid mussels have a parasitic larval stage, they are able to disperse upstream and downstream as larvae while attached to their host fish and with flow as juveniles after excystment from the host. Understanding unionid population ecology requires knowledge of the processes that affect juvenile dispersal prior to establishment. We examined presettlement (transport and...
Authors
J.A. Daraio, L.J. Weber, T.J. Newton
Influence of shell morphology on distributions of unionids in the upper Mississippi River Influence of shell morphology on distributions of unionids in the upper Mississippi River
Attempts to predict the distribution of unionids from readily measurable microhabitat descriptors (i.e. water depth, current velocity, stream size, sediment type) have been largely unsuccessful, but certain biological and calculated hydraulic variables have recently shown some predictive power. We used historic and recent data on unionids (from 1987 to 2003) and hydraulic conditions at...
Authors
M.R. Bartsch, S. J. Zigler, T.J. Newton, J.S. Sauer
Characteristics of a refuge for native freshwater mussels (Bivalvia: Unionidae) in Lake St. Clair Characteristics of a refuge for native freshwater mussels (Bivalvia: Unionidae) in Lake St. Clair
The Lake St. Clair delta (??? 100??km2) provides an important refuge for native freshwater mussels (Unionidae) wherein 22 of the ??? 35 historical species co-occur with invasive dreissenids. A total of 1875 live unionids representing 22 species were found during snorkeling surveys of 32 shallow (??? 1??m) sites throughout the delta. Richness and density of unionids and zebra mussel...
Authors
D.J. McGoldrick, J. L. Metcalfe-Smith, M.T. Arts, D. W. Schloesser, T.J. Newton, G.L. Mackie, E.M. Monroe, J. Biberhofer, Kevin Johnson
Fish movement and habitat use depends on water body size and shape Fish movement and habitat use depends on water body size and shape
Home ranges are central to understanding habitat diversity, effects of fragmentation and conservation. The distance that an organism moves yields information on life history, genetics and interactions with other organisms. Present theory suggests that home range is set by body size of individuals. Here, we analyse estimates of home ranges in lakes and rivers to show that body size of...
Authors
D.A. Woolnough, J. A. Downing, T.J. Newton
Importance of physical and hydraulic characteristics to unionid mussels: A retrospective analysis in a reach of large river Importance of physical and hydraulic characteristics to unionid mussels: A retrospective analysis in a reach of large river
Interest in understanding physical and hydraulic factors that might drive distribution and abundance of freshwater mussels has been increasing due to their decline throughout North America. We assessed whether the spatial distribution of unionid mussels could be predicted from physical and hydraulic variables in a reach of the Upper Mississippi River. Classification and regression tree...
Authors
S. J. Zigler, T.J. Newton, J. J. Steuer, M.R. Bartsch, J.S. Sauer