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
Preliminary monitoring protocol for the tidal freshwater wetland restoration herbivory study in national capital parks--east: Appendix B Preliminary monitoring protocol for the tidal freshwater wetland restoration herbivory study in national capital parks--east: Appendix B
Four tidal freshwater wetland restoration projects have been undertaken within Anacostia Park on lands managed by the National Park Service since 1993. Monitoring the impacts of Canada goose (Branta canadensis) herbivory on the wetland vegetation will play a key role in determining the long-term health of these tidal freshwater wetland restorations. This Implementation Plan lays out...
Authors
Cairn Krafft, Jeffrey S. Hatfield
Age-specific survival of male golden-cheeked warblers on the Fort Hood Military Reservation, Texas Age-specific survival of male golden-cheeked warblers on the Fort Hood Military Reservation, Texas
Population models are essential components of large-scale conservation and management plans for the federally endangered Golden-cheeked Warbler ( Setophaga chrysoparia; hereafter GCWA). However, existing models are based on vital rate estimates calculated using relatively small data sets that are now more than a decade old. We estimated more current, precise adult and juvenile apparent...
Authors
Adam Duarte, James E. Hines, James D. Nichols, Jeffrey S. Hatfield, Floyd W. Weckerly
Demographic variation, reintroduction, and persistence of an island duck (Anas laysanensis) Demographic variation, reintroduction, and persistence of an island duck (Anas laysanensis)
Population variation in life history can be important for predicting successful establishment and persistence of reintroduced populations of endangered species. The Laysan duck (Anas laysanensis) is an endangered bird native to the Hawaiian Archipelago that was extirpated from most islands after the introduction of mammalian predators. Laysan ducks were restricted to a single remote...
Authors
Michelle H. Reynolds, Emily Weiser, Ian Jamieson, Jeffrey S. Hatfield
Vascular plant and vertebrate species richness in national parks of the eastern United States Vascular plant and vertebrate species richness in national parks of the eastern United States
Given the estimates that species diversity is diminishing at 50-100 times the normal rate, it is critical that we be able to evaluate changes in species richness in order to make informed decisions for conserving species diversity. In this study, we examined the potential of vascular plant species richness to be used as a surrogate for vertebrate species richness in the classes of...
Authors
Jeffrey S. Hatfield, Kaci E. Myrick, Michael A. Huston, Floyd W. Weckerly, M. Clay Green
Dynamics of seabird colonies vulnerable to sea-level rise at French Frigate Shoals, Hawai`i Dynamics of seabird colonies vulnerable to sea-level rise at French Frigate Shoals, Hawai`i
Globally, seabirds are vulnerable to anthropogenic threats both at sea and on land. Seabirds typically nest colonially and show strong site fidelity; therefore, conservation strategies could benefit from an understanding of the population dynamics and vulnerability of breeding colonies to climate change. More than 350 atolls exist across the Pacific Ocean; while they provide nesting...
Authors
Michelle H. Reynolds, Karen N. Courtot, Crystal M. Krause, Nathaniel E. Seavy, Paula Hartzell, Jeff S. Hatfield
Effects of Canada goose herbivory on the tidal freshwater wetlands in Anacostia Park, 2009-2011 Effects of Canada goose herbivory on the tidal freshwater wetlands in Anacostia Park, 2009-2011
Herbivory has played a major role in dictating vegetation abundance and species composition at Kingman Marsh in Anacostia Park, Washington, D.C., since restoration of this tidal freshwater wetland was initiated in 2000. The diverse and robust vegetative cover that developed in the first year post-reconstruction experienced significant decimation in the second year, after the protective...
Authors
Cairn C. Krafft, Jeffrey S. Hatfield, Richard S. Hammerschlag
Science and Products
Filter Total Items: 54
Preliminary monitoring protocol for the tidal freshwater wetland restoration herbivory study in national capital parks--east: Appendix B Preliminary monitoring protocol for the tidal freshwater wetland restoration herbivory study in national capital parks--east: Appendix B
Four tidal freshwater wetland restoration projects have been undertaken within Anacostia Park on lands managed by the National Park Service since 1993. Monitoring the impacts of Canada goose (Branta canadensis) herbivory on the wetland vegetation will play a key role in determining the long-term health of these tidal freshwater wetland restorations. This Implementation Plan lays out...
Authors
Cairn Krafft, Jeffrey S. Hatfield
Age-specific survival of male golden-cheeked warblers on the Fort Hood Military Reservation, Texas Age-specific survival of male golden-cheeked warblers on the Fort Hood Military Reservation, Texas
Population models are essential components of large-scale conservation and management plans for the federally endangered Golden-cheeked Warbler ( Setophaga chrysoparia; hereafter GCWA). However, existing models are based on vital rate estimates calculated using relatively small data sets that are now more than a decade old. We estimated more current, precise adult and juvenile apparent...
Authors
Adam Duarte, James E. Hines, James D. Nichols, Jeffrey S. Hatfield, Floyd W. Weckerly
Demographic variation, reintroduction, and persistence of an island duck (Anas laysanensis) Demographic variation, reintroduction, and persistence of an island duck (Anas laysanensis)
Population variation in life history can be important for predicting successful establishment and persistence of reintroduced populations of endangered species. The Laysan duck (Anas laysanensis) is an endangered bird native to the Hawaiian Archipelago that was extirpated from most islands after the introduction of mammalian predators. Laysan ducks were restricted to a single remote...
Authors
Michelle H. Reynolds, Emily Weiser, Ian Jamieson, Jeffrey S. Hatfield
Vascular plant and vertebrate species richness in national parks of the eastern United States Vascular plant and vertebrate species richness in national parks of the eastern United States
Given the estimates that species diversity is diminishing at 50-100 times the normal rate, it is critical that we be able to evaluate changes in species richness in order to make informed decisions for conserving species diversity. In this study, we examined the potential of vascular plant species richness to be used as a surrogate for vertebrate species richness in the classes of...
Authors
Jeffrey S. Hatfield, Kaci E. Myrick, Michael A. Huston, Floyd W. Weckerly, M. Clay Green
Dynamics of seabird colonies vulnerable to sea-level rise at French Frigate Shoals, Hawai`i Dynamics of seabird colonies vulnerable to sea-level rise at French Frigate Shoals, Hawai`i
Globally, seabirds are vulnerable to anthropogenic threats both at sea and on land. Seabirds typically nest colonially and show strong site fidelity; therefore, conservation strategies could benefit from an understanding of the population dynamics and vulnerability of breeding colonies to climate change. More than 350 atolls exist across the Pacific Ocean; while they provide nesting...
Authors
Michelle H. Reynolds, Karen N. Courtot, Crystal M. Krause, Nathaniel E. Seavy, Paula Hartzell, Jeff S. Hatfield
Effects of Canada goose herbivory on the tidal freshwater wetlands in Anacostia Park, 2009-2011 Effects of Canada goose herbivory on the tidal freshwater wetlands in Anacostia Park, 2009-2011
Herbivory has played a major role in dictating vegetation abundance and species composition at Kingman Marsh in Anacostia Park, Washington, D.C., since restoration of this tidal freshwater wetland was initiated in 2000. The diverse and robust vegetative cover that developed in the first year post-reconstruction experienced significant decimation in the second year, after the protective...
Authors
Cairn C. Krafft, Jeffrey S. Hatfield, Richard S. Hammerschlag