Jeffrey Hatfield, Ph.D.
Dr. Jeff Hatfield's duties include field and statistical research on U.S. wildlife and habitats, review of study plans and manuscripts, experimental design, statistical consulting with wildlife biologists, and data analysis.
Current research consists of monitoring growth and survival of Hawaiian trees, monitoring regeneration and restoration of vegetation in Texas, monitoring herbivory in National Parks of the National Capital Region, and studies of maternal-effects and Medea genes in snails and mammals.
Recent Accomplishments
Education
- Ph.D. 1986. Biostatistics (focus: theoretical ecology & genetics). The Ohio State University, Columbus, Ohio.
- M.A.S. 1982. Applied Statistics (focus: frequentist statistics). The Ohio State University, Columbus, Ohio.
- M.S. 1981. Zoology (focus: aquatic ecology & genetics). Miami University, Oxford, Ohio.
- B.A. 1979. Zoology and Mathematics & Statistics (double major). Miami University, Oxford, Ohio.
Professional Studies/Experience
Mentorship/Outreach
Professional societies/affiliations/committees/editorial boards
Honors, awards, recognition, elected offices
Scientific/Oral Presentations, Abstracts
Science and Products
Filter Total Items: 54
Final Report: Five years of monitoring reconstructed freshwater tidal wetlands in the urban Anacostia River (2000-2004) Final Report: Five years of monitoring reconstructed freshwater tidal wetlands in the urban Anacostia River (2000-2004)
The Anacostia River in Washington, D.C. USA consisted of over 809 hectares (2000 acres) of freshwater tidal wetlands before mandatory dredging removed most of them in the first half of the 20th century. Much of this13 kilometer (8 mile) reach was transferred to the National Park Service (NPS). Planning processes in the 1980?s envisioned a restoration (rejuvenation) of some wetlands for...
Authors
R.S. Hammerschlag, A.H. Baldwin, C.C. Krafft, K. P. Neff, M.M. Paul, K.D. Brittingham, K. Rusello, Jeff S. Hatfield
The genetic basis of hair whorl, handedness, and other phenotypes The genetic basis of hair whorl, handedness, and other phenotypes
Evidence is presented that RHD, RHCE, and other RH genes, may be interesting candidates to consider when searching for the genetic basis of hair whorl rotation (i.e., clockwise or counterclockwise), handedness (i.e., right handed, left handed or ambidextrous), speech laterality (i.e., right brained or left brained), speech dyslexia (e.g., stuttering), sexual orientation (i.e...
Authors
Jeff S. Hatfield
Behavioral profiles of the captive juvenile whooping crane as an indicator of post-release survival Behavioral profiles of the captive juvenile whooping crane as an indicator of post-release survival
Predation by bobcats (Lynx rufus) is the major cause of mortality in captive-reared whooping cranes (Grus americana) released into the wild to establish a nonmigratory flock in Florida. This study investigated whether rearing methods (parent-rearing, hand-rearing, or hand-rearing with exercise) of cranes, and behaviors observed in birds either before or shortly after release in the wild...
Authors
M.D. Kreger, Jeff S. Hatfield, I. Estevez, G.F. Gee, D.A. Clugston
Inter-species variation in yolk steroid levels and a cowbird-host comparison Inter-species variation in yolk steroid levels and a cowbird-host comparison
We examined variability in yolk hormone levels among songbird species and the role of yolk steroids as a mechanism for enhanced exploitation of hosts by the parasitic Brown-headed Cowbird Molothrus ater. Within-clutch variation in yolk steroids has been found in several avian species in single species studies, but few comparisons have been made among species. We found a large range of...
Authors
D. Caldwell Hahn, Jeffrey S. Hatfield, Mahmoud A. Abdelnabi, Julie M. Wu, Lawrence D. Igl, Mary A. Ottinger
The adaptive significance of stealing in a marine bird and its relationship to parental quality The adaptive significance of stealing in a marine bird and its relationship to parental quality
Kleptoparasitism (food theft) is a tactic used opportunistically by many foraging birds, but little is known about its fitness benefits. Here we show that habitual kleptoparasitism by individual parent roseate terns (Sterna dougallii) is associated with consistently superior reproductive performance relative to nonkleptoparasitic ('honest') parents, as measured by growth and survival to...
Authors
D. A. Shealer, J. A. Spendelow, Jeff S. Hatfield, I.C.T. Nisbet
Whooping crane titers to eastern equine encephalitis vaccinations Whooping crane titers to eastern equine encephalitis vaccinations
In 1984 an epizootic of eastern equine encephalitis (EEE) virus killed 7 of 39 (18%) whooping cranes in captivity at the Patuxent Wildlife Research Center in Laurel, Maryland, USA. Since that time whooping cranes have been vaccinated with a human EEE vaccine. This vaccine was unavailable for several years, necessitating use of an equine vaccine in the cranes. This study compared the...
Authors
Glenn H. Olsen, E. Kolski, Jeff S. Hatfield, D. E. Docherty
Science and Products
Filter Total Items: 54
Final Report: Five years of monitoring reconstructed freshwater tidal wetlands in the urban Anacostia River (2000-2004) Final Report: Five years of monitoring reconstructed freshwater tidal wetlands in the urban Anacostia River (2000-2004)
The Anacostia River in Washington, D.C. USA consisted of over 809 hectares (2000 acres) of freshwater tidal wetlands before mandatory dredging removed most of them in the first half of the 20th century. Much of this13 kilometer (8 mile) reach was transferred to the National Park Service (NPS). Planning processes in the 1980?s envisioned a restoration (rejuvenation) of some wetlands for...
Authors
R.S. Hammerschlag, A.H. Baldwin, C.C. Krafft, K. P. Neff, M.M. Paul, K.D. Brittingham, K. Rusello, Jeff S. Hatfield
The genetic basis of hair whorl, handedness, and other phenotypes The genetic basis of hair whorl, handedness, and other phenotypes
Evidence is presented that RHD, RHCE, and other RH genes, may be interesting candidates to consider when searching for the genetic basis of hair whorl rotation (i.e., clockwise or counterclockwise), handedness (i.e., right handed, left handed or ambidextrous), speech laterality (i.e., right brained or left brained), speech dyslexia (e.g., stuttering), sexual orientation (i.e...
Authors
Jeff S. Hatfield
Behavioral profiles of the captive juvenile whooping crane as an indicator of post-release survival Behavioral profiles of the captive juvenile whooping crane as an indicator of post-release survival
Predation by bobcats (Lynx rufus) is the major cause of mortality in captive-reared whooping cranes (Grus americana) released into the wild to establish a nonmigratory flock in Florida. This study investigated whether rearing methods (parent-rearing, hand-rearing, or hand-rearing with exercise) of cranes, and behaviors observed in birds either before or shortly after release in the wild...
Authors
M.D. Kreger, Jeff S. Hatfield, I. Estevez, G.F. Gee, D.A. Clugston
Inter-species variation in yolk steroid levels and a cowbird-host comparison Inter-species variation in yolk steroid levels and a cowbird-host comparison
We examined variability in yolk hormone levels among songbird species and the role of yolk steroids as a mechanism for enhanced exploitation of hosts by the parasitic Brown-headed Cowbird Molothrus ater. Within-clutch variation in yolk steroids has been found in several avian species in single species studies, but few comparisons have been made among species. We found a large range of...
Authors
D. Caldwell Hahn, Jeffrey S. Hatfield, Mahmoud A. Abdelnabi, Julie M. Wu, Lawrence D. Igl, Mary A. Ottinger
The adaptive significance of stealing in a marine bird and its relationship to parental quality The adaptive significance of stealing in a marine bird and its relationship to parental quality
Kleptoparasitism (food theft) is a tactic used opportunistically by many foraging birds, but little is known about its fitness benefits. Here we show that habitual kleptoparasitism by individual parent roseate terns (Sterna dougallii) is associated with consistently superior reproductive performance relative to nonkleptoparasitic ('honest') parents, as measured by growth and survival to...
Authors
D. A. Shealer, J. A. Spendelow, Jeff S. Hatfield, I.C.T. Nisbet
Whooping crane titers to eastern equine encephalitis vaccinations Whooping crane titers to eastern equine encephalitis vaccinations
In 1984 an epizootic of eastern equine encephalitis (EEE) virus killed 7 of 39 (18%) whooping cranes in captivity at the Patuxent Wildlife Research Center in Laurel, Maryland, USA. Since that time whooping cranes have been vaccinated with a human EEE vaccine. This vaccine was unavailable for several years, necessitating use of an equine vaccine in the cranes. This study compared the...
Authors
Glenn H. Olsen, E. Kolski, Jeff S. Hatfield, D. E. Docherty