Jacoby Carter, Ph.D.
Jacoby Carter is Scientist Emeritus at the USGS Wetland and Aquatic Research Center.
EDUCATION
Ph.D., Wildlife Management, University of Massachusetts, Amherst, 1996
Dissertation: MOAB: A Generalizable Artificial Intelligence Model for Simulating Duck Nest Depredation in the Northern Prairie Region of North Dakota
M.S., Ecology and Evolutionary Biology, Cornell University, 1992
Thesis: A Comparison of the Distribution of Plant Species in Flathead Lake and Swan Lake Montana and its Implications for Kerr Dam Management Practices
B.S., Zoology and Botany, University of Washington, 1982
RESEARCH
Upon completion of graduate school, Jacoby Carter worked at the USGS Wetland and Aquatic Research Center (formerly National Wetlands Research Center) in Lafayette, Louisiana. Most of his research has focused on popluation dynamic modeling, studying invasive species and estuarine submerged aquatic vegetation. Carter's international work has included research in Mexico on land use change, in Vietnam on fire behavior models, and in Madagascar on environmental risk/benefit analysis. His current research emphases are modeling population dynamics, spatial distributions of plants and animals, movement models, and invasive species research. Species Carter currently works with are Green Treefrogs (Hyla cinerea), Nutria (Myocastor coypus), and Island Applesnails (Pomacea insularum). In addition, Carter is doing work on fire behavior models for Tea Tree (Melaleuca alternifolia) forest in Vietnam and have done a variety of vegetative surveys and monitoring.
His personal research has focused on the following areas: developing improved telemetry equipment and techniques, documenting nutria natural history in non-marsh systems, modeling nutria population dynamics, dispersal and their impact on marsh systems.
Island applesnail research team leader. Four co-PIs involved in spatial modeling, toxicology testing, bibliographic research, and testing biocontrol potential of native species.
Green treefrog research: Carter is a co-PI for an NSF funded Undergraduate Biology/Mathematics Project. Research for the project includes long term monitoring (5 years to date) of green treefrog population in an urban area. He developed and supervises this research.
Ecologist- Submerged Aquatic Vegetation Technical Working Group- Freshwater/Brackish SAV sampling in response to the Deepwater Horizon Oil Spill. Co-author of Freshwater/Brackish SAV sampling plan. Federal team leader for sampling.
Science and Products
Filter Total Items: 45
Fitting a structured juvenile-adult model for green tree frogs to population estimates from capture-mark-recapture field data Fitting a structured juvenile-adult model for green tree frogs to population estimates from capture-mark-recapture field data
We derive point and interval estimates for an urban population of green tree frogs (Hyla cinerea) from capture–mark–recapture field data obtained during the years 2006–2009. We present an infinite-dimensional least-squares approach which compares a mathematical population model to the statistical population estimates obtained from the field data. The model is composed of nonlinear first...
Authors
Azmy Ackleh, J. Carter, Keng Deng, Qihua Huang, Nabendu Pal, Xing Yang
A geographic information system tool for aquatic resource conservation in the Red and Sabine River Watersheds of the southeast United States A geographic information system tool for aquatic resource conservation in the Red and Sabine River Watersheds of the southeast United States
Our goal was to build a geographic information system (GIS) tool to enhance modeling and hypothesis testing relevant to watersheds and fish fauna of the Red and Sabine Rivers in the southeastern United States. Species of concern were identified from wildlife action plans and Web sites. Spatial distributions of fish species and mercury in fillets were delineated using data from states...
Authors
J. A. Jenkins, S. B. Hartley, J. Carter, D. J. Johnson, J. Alford
A case study of green tree frog population size estimation by repeated capture-mark-recapture method with individual tagging: A parametric bootstrap method vs. Jolly-Seber method A case study of green tree frog population size estimation by repeated capture-mark-recapture method with individual tagging: A parametric bootstrap method vs. Jolly-Seber method
This paper deals with estimation of a green tree frog population in an urban setting using repeated capture–mark–recapture (CMR) method over several weeks with an individual tagging system which gives rise to a complicated generalization of the hypergeometric distribution. Based on the maximum likelihood estimation, a parametric bootstrap approach is adopted to obtain interval estimates...
Authors
Xing Yang, Nabendu Pal, Azmy Ackleh, Jacoby Carter
Mesohaline submerged aquatic vegetation survey along the U.S. gulf of Mexico coast, 2001 and 2002: A salinity gradient approach Mesohaline submerged aquatic vegetation survey along the U.S. gulf of Mexico coast, 2001 and 2002: A salinity gradient approach
Distribution of marine submerged aquatic vegetation (SAV; i.e., seagrass) in the northern Gulf of Mexico coast has been documented, but there are nonmarine submersed or SAV species occurring in estuarine salinities that have not been extensively reported. We sampled 276 SAV beds along the gulf coast in Florida, Alabama, Mississippi, Louisiana, and Texas in 2001 and 2002 in oligohaline to
Authors
J.H. Merino, J. Carter, S.L. Merino
Mesohaline submerged aquatic vegetation survey along the U.S. gulf of Mexico coast, 2000: A stratified random approach Mesohaline submerged aquatic vegetation survey along the U.S. gulf of Mexico coast, 2000: A stratified random approach
Estimates of submerged aquatic vegetative (SAV) along the U.S. Gulf of Mexico (Gulf) generally focus on seagrasses. In 2000, we attempted a synoptic survey of SAV in the mesohaline (5–20 ppt) zone of estuarine and nearshore areas of the northeastern Gulf. Areas with SAV were identified from existing aerial 1992 photography, and a literature review was used to select those areas that were...
Authors
J. Carter, J.H. Merino, S.L. Merino
Population estimates of Hyla cinerea (Schneider) (Green Tree frog) in an urban environment Population estimates of Hyla cinerea (Schneider) (Green Tree frog) in an urban environment
Hyla cinerea (Green Treefrog) is a common wetlands species in the southeastern US. To better understand its population dynamics, we followed a relatively isolated population of Green Treefrogs from June 2004 through October 2004 at a federal office complex in Lafayette, LA. Weekly, Green Treefrogs were caught, measured, marked with VIE tags, and released. The data were used to estimate...
Authors
L. Pham, S. Boudreaux, S. Karhbet, B. Price, A. S. Ackleh, J. Carter, N. Pal
Prioritizing bottomland hardwood forest sites for protection and augmentation Prioritizing bottomland hardwood forest sites for protection and augmentation
Bottomland hardwood forest has been greatly diminished by conversion to agriculture. Less than 25% of the pre-Columbian bottomland hardwood forests remain in the southeastern United States. Because of the valuable ecological and hydrological functions performed by these forests, their conservation and restoration has been a high priority. Part of these restoration efforts has focused on...
Authors
J. Carter, J. Biagas
Establishing a beachhead: A stochastic population model with an Allee effect applied to species invasion Establishing a beachhead: A stochastic population model with an Allee effect applied to species invasion
We formulated a spatially explicit stochastic population model with an Allee effect in order to explore how invasive species may become established. In our model, we varied the degree of migration between local populations and used an Allee effect with variable birth and death rates. Because of the stochastic component, population sizes below the Allee effect threshold may still have a...
Authors
A. S. Ackleh, L.J.S. Allen, J. Carter
Testing tail-mounted transmitters with Myocastor coypus (nutria) Testing tail-mounted transmitters with Myocastor coypus (nutria)
We developed a tail-mounted radio-transmitter for Myocastor coypus (nutria) that offers a practical and efficient alternative to collar or implant methods. The mean retention time was 96 d (range 57-147 d, n = 7), making this a practical method for short-term studies. The tail-mounts were less injurious to animals than collars and easier for field researchers to implement than either...
Authors
S. Merino, J. Carter, G. Thibodeaux
Exploring behavior of an unusual megaherbivore: A spatially explicit foraging model of the hippopotamus Exploring behavior of an unusual megaherbivore: A spatially explicit foraging model of the hippopotamus
Herbivore foraging theories have been developed for and tested on herbivores across a range of sizes. Due to logistical constraints, however, little research has focused on foraging behavior of megaherbivores. Here we present a research approach that explores megaherbivore foraging behavior, and assesses the applicability of foraging theories developed on smaller herbivores to megafauna...
Authors
R.L. Lewison, J. Carter
A survey of estuarine submerged aquatic vegetation in the northern Gulf coast A survey of estuarine submerged aquatic vegetation in the northern Gulf coast
The status of submerged aquatic vegetation along the northern Gulf of Mexico is of concern because of its role in the ecology and economy of the coast. Recent studies by U.S. Geological Survey scientists help assess the factors that contribute to SAV distribution and health.
Authors
J. Carter
A review of the literature on the worldwide distribution, spread of, and efforts to eradicate the coypu (Myocastor coypus) A review of the literature on the worldwide distribution, spread of, and efforts to eradicate the coypu (Myocastor coypus)
We conducted a literature review of coypu (Myocastor coypus) introduction and eradication efforts worldwide. The coypu (also called nutria) has been introduced from its origins in South America to every continent except Australia and Antarctica. While perceived in some regions as a valuable resource, in most regions the animals are considered a pest species. Coypus have caused damage to...
Authors
J. Carter, B.P. Leonard
Non-USGS Publications**
Carter, J. and H. Wang. 1994. A model linking the population dynamics of the giant panda Ailuropoda melanoleuca with bamboo life history. in Thompson, Ian D. editor, Proceedings of the International Union of Game Biologist XXI Congress: forests and wildlife. towards the 21st century. August 15-20, 1993, Halifax, Nova Scotia, Canada pp. 299-309.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Filter Total Items: 45
Fitting a structured juvenile-adult model for green tree frogs to population estimates from capture-mark-recapture field data Fitting a structured juvenile-adult model for green tree frogs to population estimates from capture-mark-recapture field data
We derive point and interval estimates for an urban population of green tree frogs (Hyla cinerea) from capture–mark–recapture field data obtained during the years 2006–2009. We present an infinite-dimensional least-squares approach which compares a mathematical population model to the statistical population estimates obtained from the field data. The model is composed of nonlinear first...
Authors
Azmy Ackleh, J. Carter, Keng Deng, Qihua Huang, Nabendu Pal, Xing Yang
A geographic information system tool for aquatic resource conservation in the Red and Sabine River Watersheds of the southeast United States A geographic information system tool for aquatic resource conservation in the Red and Sabine River Watersheds of the southeast United States
Our goal was to build a geographic information system (GIS) tool to enhance modeling and hypothesis testing relevant to watersheds and fish fauna of the Red and Sabine Rivers in the southeastern United States. Species of concern were identified from wildlife action plans and Web sites. Spatial distributions of fish species and mercury in fillets were delineated using data from states...
Authors
J. A. Jenkins, S. B. Hartley, J. Carter, D. J. Johnson, J. Alford
A case study of green tree frog population size estimation by repeated capture-mark-recapture method with individual tagging: A parametric bootstrap method vs. Jolly-Seber method A case study of green tree frog population size estimation by repeated capture-mark-recapture method with individual tagging: A parametric bootstrap method vs. Jolly-Seber method
This paper deals with estimation of a green tree frog population in an urban setting using repeated capture–mark–recapture (CMR) method over several weeks with an individual tagging system which gives rise to a complicated generalization of the hypergeometric distribution. Based on the maximum likelihood estimation, a parametric bootstrap approach is adopted to obtain interval estimates...
Authors
Xing Yang, Nabendu Pal, Azmy Ackleh, Jacoby Carter
Mesohaline submerged aquatic vegetation survey along the U.S. gulf of Mexico coast, 2001 and 2002: A salinity gradient approach Mesohaline submerged aquatic vegetation survey along the U.S. gulf of Mexico coast, 2001 and 2002: A salinity gradient approach
Distribution of marine submerged aquatic vegetation (SAV; i.e., seagrass) in the northern Gulf of Mexico coast has been documented, but there are nonmarine submersed or SAV species occurring in estuarine salinities that have not been extensively reported. We sampled 276 SAV beds along the gulf coast in Florida, Alabama, Mississippi, Louisiana, and Texas in 2001 and 2002 in oligohaline to
Authors
J.H. Merino, J. Carter, S.L. Merino
Mesohaline submerged aquatic vegetation survey along the U.S. gulf of Mexico coast, 2000: A stratified random approach Mesohaline submerged aquatic vegetation survey along the U.S. gulf of Mexico coast, 2000: A stratified random approach
Estimates of submerged aquatic vegetative (SAV) along the U.S. Gulf of Mexico (Gulf) generally focus on seagrasses. In 2000, we attempted a synoptic survey of SAV in the mesohaline (5–20 ppt) zone of estuarine and nearshore areas of the northeastern Gulf. Areas with SAV were identified from existing aerial 1992 photography, and a literature review was used to select those areas that were...
Authors
J. Carter, J.H. Merino, S.L. Merino
Population estimates of Hyla cinerea (Schneider) (Green Tree frog) in an urban environment Population estimates of Hyla cinerea (Schneider) (Green Tree frog) in an urban environment
Hyla cinerea (Green Treefrog) is a common wetlands species in the southeastern US. To better understand its population dynamics, we followed a relatively isolated population of Green Treefrogs from June 2004 through October 2004 at a federal office complex in Lafayette, LA. Weekly, Green Treefrogs were caught, measured, marked with VIE tags, and released. The data were used to estimate...
Authors
L. Pham, S. Boudreaux, S. Karhbet, B. Price, A. S. Ackleh, J. Carter, N. Pal
Prioritizing bottomland hardwood forest sites for protection and augmentation Prioritizing bottomland hardwood forest sites for protection and augmentation
Bottomland hardwood forest has been greatly diminished by conversion to agriculture. Less than 25% of the pre-Columbian bottomland hardwood forests remain in the southeastern United States. Because of the valuable ecological and hydrological functions performed by these forests, their conservation and restoration has been a high priority. Part of these restoration efforts has focused on...
Authors
J. Carter, J. Biagas
Establishing a beachhead: A stochastic population model with an Allee effect applied to species invasion Establishing a beachhead: A stochastic population model with an Allee effect applied to species invasion
We formulated a spatially explicit stochastic population model with an Allee effect in order to explore how invasive species may become established. In our model, we varied the degree of migration between local populations and used an Allee effect with variable birth and death rates. Because of the stochastic component, population sizes below the Allee effect threshold may still have a...
Authors
A. S. Ackleh, L.J.S. Allen, J. Carter
Testing tail-mounted transmitters with Myocastor coypus (nutria) Testing tail-mounted transmitters with Myocastor coypus (nutria)
We developed a tail-mounted radio-transmitter for Myocastor coypus (nutria) that offers a practical and efficient alternative to collar or implant methods. The mean retention time was 96 d (range 57-147 d, n = 7), making this a practical method for short-term studies. The tail-mounts were less injurious to animals than collars and easier for field researchers to implement than either...
Authors
S. Merino, J. Carter, G. Thibodeaux
Exploring behavior of an unusual megaherbivore: A spatially explicit foraging model of the hippopotamus Exploring behavior of an unusual megaherbivore: A spatially explicit foraging model of the hippopotamus
Herbivore foraging theories have been developed for and tested on herbivores across a range of sizes. Due to logistical constraints, however, little research has focused on foraging behavior of megaherbivores. Here we present a research approach that explores megaherbivore foraging behavior, and assesses the applicability of foraging theories developed on smaller herbivores to megafauna...
Authors
R.L. Lewison, J. Carter
A survey of estuarine submerged aquatic vegetation in the northern Gulf coast A survey of estuarine submerged aquatic vegetation in the northern Gulf coast
The status of submerged aquatic vegetation along the northern Gulf of Mexico is of concern because of its role in the ecology and economy of the coast. Recent studies by U.S. Geological Survey scientists help assess the factors that contribute to SAV distribution and health.
Authors
J. Carter
A review of the literature on the worldwide distribution, spread of, and efforts to eradicate the coypu (Myocastor coypus) A review of the literature on the worldwide distribution, spread of, and efforts to eradicate the coypu (Myocastor coypus)
We conducted a literature review of coypu (Myocastor coypus) introduction and eradication efforts worldwide. The coypu (also called nutria) has been introduced from its origins in South America to every continent except Australia and Antarctica. While perceived in some regions as a valuable resource, in most regions the animals are considered a pest species. Coypus have caused damage to...
Authors
J. Carter, B.P. Leonard
Non-USGS Publications**
Carter, J. and H. Wang. 1994. A model linking the population dynamics of the giant panda Ailuropoda melanoleuca with bamboo life history. in Thompson, Ian D. editor, Proceedings of the International Union of Game Biologist XXI Congress: forests and wildlife. towards the 21st century. August 15-20, 1993, Halifax, Nova Scotia, Canada pp. 299-309.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.