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
The effects of captive rearing on the behavior of newly-released whooping cranes (Grus americana) The effects of captive rearing on the behavior of newly-released whooping cranes (Grus americana)
Rearing treatments used in captivity to prepare animals for reintroduction to the wild may have a profound effect on behavior and, possibly, affect their survival after reintroduction. This study examined the behaviors of captive-reared whooping cranes (Grus americana) upon their release in Florida to determine if rearing treatments may affect the behavior of the birds and how these...
Authors
M.D. Kreger, Jeff S. Hatfield, I. Estevez, G.F. Gee, D.A. Clugston
Efficacy of selected coccidiostats in sandhill cranes (Grus canadensis) following challenge Efficacy of selected coccidiostats in sandhill cranes (Grus canadensis) following challenge
The anticoccidial efficacy of amprolium, clazuril, and monensin were studied in sandhill cranes (Grus canadensis) infected with a mixture of Eimeria spp. oocysts. Five groups of four 1-day-old sandhill crane chicks were maintained on a crumbled ration containing no coccidiostat, amprolium at 2.2 ppm, clazuril at 1.1 ppm, clazuril at 5.5 ppm, or monensin at 99 ppm. After 2 wk on their...
Authors
James W. Carpenter, Meliton N. Novilla, Jeffrey Hatfield
Modeling birds: an overview Modeling birds: an overview
No abstract available.
Authors
Jeff S. Hatfield
Detecting warning signs of trouble within population fluctuations: using capture-recapture modeling to uncover changes in population dynamics leading to declines Detecting warning signs of trouble within population fluctuations: using capture-recapture modeling to uncover changes in population dynamics leading to declines
An intensive mark-recapture/resighting program has been carried out on the Roseate Terns nesting at Falkner Island, Connecticut, since the late 1980s as part of a regional study of the metapopulation dynamics and ecology of the endangered Northwest Atlantic breeding population of this species. Substantial losses of tern eggs and chicks to predation at this colony site began in 1996 when...
Authors
J. A. Spendelow, J.D. Nichols, W. L. Kendall, J.E. Hines, Jeff S. Hatfield, I.C.T. Nisbet
Contaminant exposure and reproductive success of Ospreys (Pandion haliaetus) nesting in Chesapeake Bay regions of concern Contaminant exposure and reproductive success of Ospreys (Pandion haliaetus) nesting in Chesapeake Bay regions of concern
The Chesapeake Bay osprey population has more than doubled in size since restrictions were placed on the production and use of DDT and other toxic organochlorine contaminants in the 1970s. Ospreys are now nesting in the most highly polluted portions of the Bay. In 2000 and 2001, contaminant exposure and reproduction were monitored in ospreys nesting in regions of concern, including...
Authors
Barnett A. Rattner, P. C. McGowan, N. H. Golden, Jeff S. Hatfield, P. C. Toschik, R.F. Lukei, R. C. Hale, I. Schmitz-Afonso, C.P. Rice
Contribution of natural history collection data to biodiversity assessment in national parks Contribution of natural history collection data to biodiversity assessment in national parks
There has been mounting interest in the use of museum and herbaria collections to assess biodiversity; information is often difficult to locate and access, however, and few recommendations are available for effectively using natural history collections. As part of an effort to inventory vertebrates and vascular plants in U.S. national parks, we searched manually and by computer for...
Authors
A.F. O'Connell, A.T. Gilbert, Jeff S. Hatfield
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
The effects of captive rearing on the behavior of newly-released whooping cranes (Grus americana) The effects of captive rearing on the behavior of newly-released whooping cranes (Grus americana)
Rearing treatments used in captivity to prepare animals for reintroduction to the wild may have a profound effect on behavior and, possibly, affect their survival after reintroduction. This study examined the behaviors of captive-reared whooping cranes (Grus americana) upon their release in Florida to determine if rearing treatments may affect the behavior of the birds and how these...
Authors
M.D. Kreger, Jeff S. Hatfield, I. Estevez, G.F. Gee, D.A. Clugston
Efficacy of selected coccidiostats in sandhill cranes (Grus canadensis) following challenge Efficacy of selected coccidiostats in sandhill cranes (Grus canadensis) following challenge
The anticoccidial efficacy of amprolium, clazuril, and monensin were studied in sandhill cranes (Grus canadensis) infected with a mixture of Eimeria spp. oocysts. Five groups of four 1-day-old sandhill crane chicks were maintained on a crumbled ration containing no coccidiostat, amprolium at 2.2 ppm, clazuril at 1.1 ppm, clazuril at 5.5 ppm, or monensin at 99 ppm. After 2 wk on their...
Authors
James W. Carpenter, Meliton N. Novilla, Jeffrey Hatfield
Modeling birds: an overview Modeling birds: an overview
No abstract available.
Authors
Jeff S. Hatfield
Detecting warning signs of trouble within population fluctuations: using capture-recapture modeling to uncover changes in population dynamics leading to declines Detecting warning signs of trouble within population fluctuations: using capture-recapture modeling to uncover changes in population dynamics leading to declines
An intensive mark-recapture/resighting program has been carried out on the Roseate Terns nesting at Falkner Island, Connecticut, since the late 1980s as part of a regional study of the metapopulation dynamics and ecology of the endangered Northwest Atlantic breeding population of this species. Substantial losses of tern eggs and chicks to predation at this colony site began in 1996 when...
Authors
J. A. Spendelow, J.D. Nichols, W. L. Kendall, J.E. Hines, Jeff S. Hatfield, I.C.T. Nisbet
Contaminant exposure and reproductive success of Ospreys (Pandion haliaetus) nesting in Chesapeake Bay regions of concern Contaminant exposure and reproductive success of Ospreys (Pandion haliaetus) nesting in Chesapeake Bay regions of concern
The Chesapeake Bay osprey population has more than doubled in size since restrictions were placed on the production and use of DDT and other toxic organochlorine contaminants in the 1970s. Ospreys are now nesting in the most highly polluted portions of the Bay. In 2000 and 2001, contaminant exposure and reproduction were monitored in ospreys nesting in regions of concern, including...
Authors
Barnett A. Rattner, P. C. McGowan, N. H. Golden, Jeff S. Hatfield, P. C. Toschik, R.F. Lukei, R. C. Hale, I. Schmitz-Afonso, C.P. Rice
Contribution of natural history collection data to biodiversity assessment in national parks Contribution of natural history collection data to biodiversity assessment in national parks
There has been mounting interest in the use of museum and herbaria collections to assess biodiversity; information is often difficult to locate and access, however, and few recommendations are available for effectively using natural history collections. As part of an effort to inventory vertebrates and vascular plants in U.S. national parks, we searched manually and by computer for...
Authors
A.F. O'Connell, A.T. Gilbert, Jeff S. Hatfield