David R Smith, Ph.D.
Dave is a Research Statistician (Biology) at the Eastern Ecological Science Center in Kearneysville, WV.
Dave Smith graduated from Colorado State (MS in Fish and Wildlife Biology) and University of Georgia (MS in Statistics and PhD in Forest Resources). Currently, he is a biological statistician at the USGS Leetown Science Center where he focuses on applied quantitative ecology in support of natural resource management and environmental decision making.
His research activities mostly focus on the following topics:
- Adaptive sampling of rare and clustered populations
- Conservation and science of horseshoe crabs in North America and Asia
- Conservation of freshwater mussels
- Application of structured decision making and adaptive management to natural resource management
Science and Products
Filter Total Items: 120
A terrain-based paired-site sampling design to assess biodiversity losses from eastern hemlock decline A terrain-based paired-site sampling design to assess biodiversity losses from eastern hemlock decline
Biodiversity surveys are often hampered by the inability to control extraneous sources of variability introduced into comparisons of populations across a heterogenous landscape. If not specifically accounted for a priori, this noise can weaken comparisons between sites, and can make it difficult to draw inferences about specific ecological processes. We developed a terrain-based, paired...
Authors
J.A. Young, D. R. Smith, C.D. Snyder, D. P. Lemarie
Horseshoe crab (Limulus polyphemus) reproductive activity on Delaware Bay beaches: Interactions with beach characteristics Horseshoe crab (Limulus polyphemus) reproductive activity on Delaware Bay beaches: Interactions with beach characteristics
We used results from a survey of horseshoe crab reproductive activity that was conducted in 1999 throughout Delaware Bay to examine the relationship between estimates of spawning females and egg deposition and analyze how that relationship varies with geography, time within a spawning season, beach morphology, and wave energy. We found that beach morphology and wave energy interacted...
Authors
D. R. Smith, P.S. Pooler, R.E. Loveland, M.L. Botton, S.F. Michels, R.G. Weber, Daniel B. Carter
Spatial and temporal distribution of horseshoe crab (Limulus polyphemus) Spawning Delaware Bay: Implications for monitoring Spatial and temporal distribution of horseshoe crab (Limulus polyphemus) Spawning Delaware Bay: Implications for monitoring
Concern for the status of horseshoe crab (Limulus polyphemus) has increased as harvest for conch and eel bait has increased and spawning habitat has decreased. In early 1999 a workshop was held at the behest of the Atlantic States Marine Fisheries Commission to design a statistically valid survey of horseshoe crab spawning in Delaware Bay. The survey that resulted was a redesign of a...
Authors
D. R. Smith, P.S. Pooler, B.L. Swan, S.F. Michels, W.R. Hall, P.J. Himchak, M. J. Millard
Survey protocol for assessment of endangered freshwater mussels the Allegheny River, Pennsylvania Survey protocol for assessment of endangered freshwater mussels the Allegheny River, Pennsylvania
The United States Endangered Species Act (ESA) requires a biological assessment of any activity that is authorized, funded, or carried out by a federal agency and likely to affect a federally listed endangered species or its critical habitat. We developed a standardized survey protocol for biological assessments of the effects of bridge replacements on 2 federally listed endangered...
Authors
D. R. Smith, R.F. Villella, D. P. Lemarie
Relationship of Eastern hemlock (Tsuga canadensis) to the ecology of small streams in Delaware Water Gap National Recreation Area Relationship of Eastern hemlock (Tsuga canadensis) to the ecology of small streams in Delaware Water Gap National Recreation Area
Hemlock ravines in Delaware Water Gap National Recreation Area (DEWA) are highly valued because of their distinctive aesthetic, recreational and ecological qualities. We conducted a comparative study designed to determine the potential long-term consequences to aquatic communities of the suspected transition from hemlock-dominated forests to mixed hardwood forests as a result of hemlock...
Authors
David P. Lemarie, John A. Young, Craig D. Snyder, Robert M. Ross, David Smith, Randy M. Bennett
Evaluation of tag types and adhesives for marking freshwater mussels (Mollusca: Unionidae) Evaluation of tag types and adhesives for marking freshwater mussels (Mollusca: Unionidae)
No abstract available.
Authors
D. P. Lemarie, D. R. Smith, R.F. Villella, D.A. Weller
Bias survival estimates from tag-recovery models where catch-and-release is common, with an example from Atlantic striped bass (Morone saxatilis) Bias survival estimates from tag-recovery models where catch-and-release is common, with an example from Atlantic striped bass (Morone saxatilis)
No abstract available.
Authors
D. R. Smith, K.P. Burnham, D.M. Kahn, X. He, C.J. Goshorn, K.A. Hattala, A.W. Kahnle
Hemlock stands contribute significantly to aquatic biodiversity Delaware Water Gap National Recreation Area Hemlock stands contribute significantly to aquatic biodiversity Delaware Water Gap National Recreation Area
No abstract available.
Authors
C.D. Snyder, J.A. Young, D. Lemarie, D. R. Smith, R. Ross, R. Bennett
Potential effects of pathogen-induced hemlock forest decline on aquatic biodiversity in Delaware Water Gap National Recreation Area Potential effects of pathogen-induced hemlock forest decline on aquatic biodiversity in Delaware Water Gap National Recreation Area
No abstract available.
Authors
C.D. Snyder, J.A. Young, D. Lemarie, D. R. Smith, R. Ross, R. Bennett
Petrology and geochemistry of late-stage intrusions of the A-type, mid-Proterozoic Pikes Peak batholith (Central Colorado, USA): Implications for petrogenetic models Petrology and geochemistry of late-stage intrusions of the A-type, mid-Proterozoic Pikes Peak batholith (Central Colorado, USA): Implications for petrogenetic models
The ~1.08 Ga anorogenic, A-type Pikes Peak batholith (Front Range, central Colorado) is dominated by coarse-grained, biotite ?? amphibole syenogranites and minor monzogranites, collectively referred to as Pikes Peak granite (PPG). The batholith is also host to numerous small, late-stage plutons that have been subdivided into two groups (e.g. Wobus, 1976. Studies in Colorado Field Geology...
Authors
D. R. Smith, J. Noblett, R. A. Wobus, D. Unruh, J. Douglass, R. Beane, C. Davis, S. Goldman, G. Kay, B. Gustavson, B. Saltoun, J. Stewart
Limits of retrospective power analysis Limits of retrospective power analysis
Power analysis after study completion has been suggested to interpret study results. We present 3 methods of estimating power and discuss their limitations. We use simulation studies to show that estimated power can be biased, extremely variable, and severely bounded. We endorse the practice of computing power to detect a biologically meaningful difference as a tool for study planning...
Authors
Patrick D. Gerard, David R. Smith, Govinda Weerakkody
A revised annotated checklist of the Chironomidae (Insecta: Diptera) of the southeastern United States A revised annotated checklist of the Chironomidae (Insecta: Diptera) of the southeastern United States
A revised annotated checklist for the chironomid midges (Diptera: Chironomidae) of the southeastern United States is presented that includes the states of Alabama, Florida, Georgia, North Carolina, South Carolina, and Tennessee. Much of the information concerns occurrence and habitat preference records based upon the authors' data, as well as published and unpublished data. Some...
Authors
Broughton A. Caldwell, Patrick L. Hudson, David R. Lenat, David Smith
Science and Products
Filter Total Items: 120
A terrain-based paired-site sampling design to assess biodiversity losses from eastern hemlock decline A terrain-based paired-site sampling design to assess biodiversity losses from eastern hemlock decline
Biodiversity surveys are often hampered by the inability to control extraneous sources of variability introduced into comparisons of populations across a heterogenous landscape. If not specifically accounted for a priori, this noise can weaken comparisons between sites, and can make it difficult to draw inferences about specific ecological processes. We developed a terrain-based, paired...
Authors
J.A. Young, D. R. Smith, C.D. Snyder, D. P. Lemarie
Horseshoe crab (Limulus polyphemus) reproductive activity on Delaware Bay beaches: Interactions with beach characteristics Horseshoe crab (Limulus polyphemus) reproductive activity on Delaware Bay beaches: Interactions with beach characteristics
We used results from a survey of horseshoe crab reproductive activity that was conducted in 1999 throughout Delaware Bay to examine the relationship between estimates of spawning females and egg deposition and analyze how that relationship varies with geography, time within a spawning season, beach morphology, and wave energy. We found that beach morphology and wave energy interacted...
Authors
D. R. Smith, P.S. Pooler, R.E. Loveland, M.L. Botton, S.F. Michels, R.G. Weber, Daniel B. Carter
Spatial and temporal distribution of horseshoe crab (Limulus polyphemus) Spawning Delaware Bay: Implications for monitoring Spatial and temporal distribution of horseshoe crab (Limulus polyphemus) Spawning Delaware Bay: Implications for monitoring
Concern for the status of horseshoe crab (Limulus polyphemus) has increased as harvest for conch and eel bait has increased and spawning habitat has decreased. In early 1999 a workshop was held at the behest of the Atlantic States Marine Fisheries Commission to design a statistically valid survey of horseshoe crab spawning in Delaware Bay. The survey that resulted was a redesign of a...
Authors
D. R. Smith, P.S. Pooler, B.L. Swan, S.F. Michels, W.R. Hall, P.J. Himchak, M. J. Millard
Survey protocol for assessment of endangered freshwater mussels the Allegheny River, Pennsylvania Survey protocol for assessment of endangered freshwater mussels the Allegheny River, Pennsylvania
The United States Endangered Species Act (ESA) requires a biological assessment of any activity that is authorized, funded, or carried out by a federal agency and likely to affect a federally listed endangered species or its critical habitat. We developed a standardized survey protocol for biological assessments of the effects of bridge replacements on 2 federally listed endangered...
Authors
D. R. Smith, R.F. Villella, D. P. Lemarie
Relationship of Eastern hemlock (Tsuga canadensis) to the ecology of small streams in Delaware Water Gap National Recreation Area Relationship of Eastern hemlock (Tsuga canadensis) to the ecology of small streams in Delaware Water Gap National Recreation Area
Hemlock ravines in Delaware Water Gap National Recreation Area (DEWA) are highly valued because of their distinctive aesthetic, recreational and ecological qualities. We conducted a comparative study designed to determine the potential long-term consequences to aquatic communities of the suspected transition from hemlock-dominated forests to mixed hardwood forests as a result of hemlock...
Authors
David P. Lemarie, John A. Young, Craig D. Snyder, Robert M. Ross, David Smith, Randy M. Bennett
Evaluation of tag types and adhesives for marking freshwater mussels (Mollusca: Unionidae) Evaluation of tag types and adhesives for marking freshwater mussels (Mollusca: Unionidae)
No abstract available.
Authors
D. P. Lemarie, D. R. Smith, R.F. Villella, D.A. Weller
Bias survival estimates from tag-recovery models where catch-and-release is common, with an example from Atlantic striped bass (Morone saxatilis) Bias survival estimates from tag-recovery models where catch-and-release is common, with an example from Atlantic striped bass (Morone saxatilis)
No abstract available.
Authors
D. R. Smith, K.P. Burnham, D.M. Kahn, X. He, C.J. Goshorn, K.A. Hattala, A.W. Kahnle
Hemlock stands contribute significantly to aquatic biodiversity Delaware Water Gap National Recreation Area Hemlock stands contribute significantly to aquatic biodiversity Delaware Water Gap National Recreation Area
No abstract available.
Authors
C.D. Snyder, J.A. Young, D. Lemarie, D. R. Smith, R. Ross, R. Bennett
Potential effects of pathogen-induced hemlock forest decline on aquatic biodiversity in Delaware Water Gap National Recreation Area Potential effects of pathogen-induced hemlock forest decline on aquatic biodiversity in Delaware Water Gap National Recreation Area
No abstract available.
Authors
C.D. Snyder, J.A. Young, D. Lemarie, D. R. Smith, R. Ross, R. Bennett
Petrology and geochemistry of late-stage intrusions of the A-type, mid-Proterozoic Pikes Peak batholith (Central Colorado, USA): Implications for petrogenetic models Petrology and geochemistry of late-stage intrusions of the A-type, mid-Proterozoic Pikes Peak batholith (Central Colorado, USA): Implications for petrogenetic models
The ~1.08 Ga anorogenic, A-type Pikes Peak batholith (Front Range, central Colorado) is dominated by coarse-grained, biotite ?? amphibole syenogranites and minor monzogranites, collectively referred to as Pikes Peak granite (PPG). The batholith is also host to numerous small, late-stage plutons that have been subdivided into two groups (e.g. Wobus, 1976. Studies in Colorado Field Geology...
Authors
D. R. Smith, J. Noblett, R. A. Wobus, D. Unruh, J. Douglass, R. Beane, C. Davis, S. Goldman, G. Kay, B. Gustavson, B. Saltoun, J. Stewart
Limits of retrospective power analysis Limits of retrospective power analysis
Power analysis after study completion has been suggested to interpret study results. We present 3 methods of estimating power and discuss their limitations. We use simulation studies to show that estimated power can be biased, extremely variable, and severely bounded. We endorse the practice of computing power to detect a biologically meaningful difference as a tool for study planning...
Authors
Patrick D. Gerard, David R. Smith, Govinda Weerakkody
A revised annotated checklist of the Chironomidae (Insecta: Diptera) of the southeastern United States A revised annotated checklist of the Chironomidae (Insecta: Diptera) of the southeastern United States
A revised annotated checklist for the chironomid midges (Diptera: Chironomidae) of the southeastern United States is presented that includes the states of Alabama, Florida, Georgia, North Carolina, South Carolina, and Tennessee. Much of the information concerns occurrence and habitat preference records based upon the authors' data, as well as published and unpublished data. Some...
Authors
Broughton A. Caldwell, Patrick L. Hudson, David R. Lenat, David Smith