Jaime Collazo, PhD
Assistant Unit Leader - North Carolina Cooperative Fish and Wildlife Research Unit
Research Interests
- Demographic Processes and Conservation
- Species-habitat relationships
- Endangered Species Conservation
Teaching Interests
- Hierarchical Species-Habitat Modeling
- Tropical Avian Biology
Professional Experience
Assistant Unit Leader, North Carolina Cooperative Fish and Wildlife Research Unit, 1991-
Education and Certifications
PhD-Iowa State University
MS-University of Idaho
BS-Universtity of Puerto Rico
Science and Products
Filter Total Items: 46
The effect of urban growth on landscape-scale restoration for a fire-dependent songbird
A landscape-scale perspective on restoration ecology has been advocated, but few studies have informed restoration with landscape metrics or addressed broad-scale threats. Threats such as urban growth may affect restoration effectiveness in a landscape context. Here, we studied longleaf pine savanna in the rapidly urbanizing southeastern United States where a habitat-specialist bird, Bachman's spa
Authors
Bradley A. Pickens, Jeffrey F. Marcus, John P. Carpenter, Scott Anderson, Paul J. Taillie, Jaime A. Collazo
Integrating multiple data sources in species distribution modeling: A framework for data fusion
The last decade has seen a dramatic increase in the use of species distribution models (SDMs) to characterize patterns of species’ occurrence and abundance. Efforts to parameterize SDMs often create a tension between the quality and quantity of data available to fit models. Estimation methods that integrate both standardized and non-standardized data types offer a potential solution to the tradeof
Authors
Krishna Pacifici, Brian J. Reich, David A.W. Miller, Beth Gardner, Glenn E. Stauffer, Susheela Singh, Alexa McKerrow, Jaime A. Collazo
Uncertainty quantification and propagation for projections of extremes in monthly area burned under climate change: A case study in the coastal plain of Georgia, USA
Human‐caused climate change is predicted to affect the frequency of hazard‐linked extremes. Unusually large wildfires are a type of extreme event that is constrained by climate and can be a hazard to society but also an important ecological disturbance. This chapter focuses on changes in the frequency of extreme monthly area burned by wildfires for the end of the 21st century for a wildfire‐prone
Authors
Adam J. Terando, Brian J. Reich, Krishna Pacifici, Jennifer Costanza, Alexa McKerrow, Jaime A. Collazo
Bayesian analysis of Jolly-Seber type models
We propose the use of finite mixtures of continuous distributions in modelling the process by which new individuals, that arrive in groups, become part of a wildlife population. We demonstrate this approach using a data set of migrating semipalmated sandpipers (Calidris pussila) for which we extend existing stopover models to allow for individuals to have different behaviour in terms of their stop
Authors
Eleni Matechou, Geoff K. Nicholls, Byron J. T. Morgan, Jaime A. Collazo, James E. Lyons
Projected gains and losses of wildlife habitat from bioenergy-induced landscape change
Domestic and foreign renewable energy targets and financial incentives have increased demand for woody biomass and bioenergy in the southeastern United States. This demand is expected to be met through purpose-grown agricultural bioenergy crops, short-rotation tree plantations, thinning and harvest of planted and natural forests, and forest harvest residues. With results from a forest economics mo
Authors
Nathan M. Tarr, Matthew J. Rubino, Jennifer K. Costanza, Alexa McKerrow, Jaime A. Collazo, Robert C. Abt
Bioenergy production and forest landscape change in the southeastern United States
Production of woody biomass for bioenergy, whether wood pellets or liquid biofuels, has the potential to cause substantial landscape change and concomitant effects on forest ecosystems, but the landscape effects of alternative production scenarios have not been fully assessed. We simulated landscape change from 2010 to 2050 under five scenarios of woody biomass production for wood pellets and liqu
Authors
Jennifer K. Costanza, Robert C. Abt, Alexa McKerrow, Jaime A. Collazo
An evaluation of rapid methods for monitoring vegetation characteristics of wetland bird habitat
Wetland managers benefit from monitoring data of sufficient precision and accuracy to assess wildlife habitat conditions and to evaluate and learn from past management decisions. For large-scale monitoring programs focused on waterbirds (waterfowl, wading birds, secretive marsh birds, and shorebirds), precision and accuracy of habitat measurements must be balanced with fiscal and logistic constrai
Authors
Brian G. Tavernia, James E. Lyons, Brian W. Loges, Andrew Wilson, Jaime A. Collazo, Michael C. Runge
Factors affecting wetland connectivity for wintering semipalmated sandpipers (Calidris pusilla) in the Caribbean
Wetland connectivity provides migratory shorebirds varying options to meet energy requirements to survive and complete their annual cycle. Multiple factors mediate movement and residency of spatially segregated wetlands. Information on these factors is lacking in the tropics, yet such information is invaluable for conservation design. The influence of seven biotic and abiotic factors on local move
Authors
Morgan A. Parks, Jaime A. Collazo, Katsi R. Ramos Alvarez
Change in numbers of resident and migratory shorebirds at the Cabo Rojo Salt Flats, Puerto Rico, USA (1985–2014)
North American migratory shorebirds have declined markedly since the 1980s, underscoring the importance of population surveys to conduct status and trend assessments. Shorebird surveys were conducted during three multi-year periods between 1985 and 2014 and used to assess changes in numbers and species composition at the Cabo Rojo Salt Flats, Puerto Rico, USA, a site of regional importance in the
Authors
Morgan A. Parks, Jaime A. Collazo, Jose A. Colon, Katsi R. Ramos Alvarez, Oscar Diaz
Occupancy dynamics in human-modified landscapes in a tropical island: implications for conservation design
AimAvian communities in human-modified landscapes exhibit varying patterns of local colonization and extinction rates, determinants of species occurrence. Our objective was to model these processes to identify habitat features that might enable movements and account for occupancy patterns in habitat matrices between the Guanica and Susua forest reserves. This knowledge is central to conservation d
Authors
Julissa I. Irizarry, Jaime A. Collazo, Stephen J. Dinsmore
Climate change and water resources in a tropical island system: Propagation of uncertainty from statistically downscaled climate models to hydrologic models
Many tropical islands have limited water resources with historically increasing demand, all potentially affected by a changing climate. The effects of climate change on island hydrology are difficult to model due to steep local precipitation gradients and sparse data. This work uses 10 statistically downscaled general circulation models (GCMs) under two greenhouse gas emission scenarios to evaluat
Authors
Ashley E. Van Beusekom, William A. Gould, Adam J. Terando, Jaime A. Collazo
Modeling climate change, urbanization, and fire effects on Pinus palustris ecosystems of the southeastern U.S.
Managing ecosystems for resilience and sustainability requires understanding how they will respond to future anthropogenic drivers such as climate change and urbanization. In fire-dependent ecosystems, predicting this response requires a focus on how these drivers will impact fire regimes. Here, we use scenarios of climate change, urbanization and management to simulate the future dynamics of the
Authors
Jennifer Costanza, Adam J. Terando, Alexa McKerrow, Jaime A. Collazo
Science and Products
Filter Total Items: 46
The effect of urban growth on landscape-scale restoration for a fire-dependent songbird
A landscape-scale perspective on restoration ecology has been advocated, but few studies have informed restoration with landscape metrics or addressed broad-scale threats. Threats such as urban growth may affect restoration effectiveness in a landscape context. Here, we studied longleaf pine savanna in the rapidly urbanizing southeastern United States where a habitat-specialist bird, Bachman's spa
Authors
Bradley A. Pickens, Jeffrey F. Marcus, John P. Carpenter, Scott Anderson, Paul J. Taillie, Jaime A. Collazo
Integrating multiple data sources in species distribution modeling: A framework for data fusion
The last decade has seen a dramatic increase in the use of species distribution models (SDMs) to characterize patterns of species’ occurrence and abundance. Efforts to parameterize SDMs often create a tension between the quality and quantity of data available to fit models. Estimation methods that integrate both standardized and non-standardized data types offer a potential solution to the tradeof
Authors
Krishna Pacifici, Brian J. Reich, David A.W. Miller, Beth Gardner, Glenn E. Stauffer, Susheela Singh, Alexa McKerrow, Jaime A. Collazo
Uncertainty quantification and propagation for projections of extremes in monthly area burned under climate change: A case study in the coastal plain of Georgia, USA
Human‐caused climate change is predicted to affect the frequency of hazard‐linked extremes. Unusually large wildfires are a type of extreme event that is constrained by climate and can be a hazard to society but also an important ecological disturbance. This chapter focuses on changes in the frequency of extreme monthly area burned by wildfires for the end of the 21st century for a wildfire‐prone
Authors
Adam J. Terando, Brian J. Reich, Krishna Pacifici, Jennifer Costanza, Alexa McKerrow, Jaime A. Collazo
Bayesian analysis of Jolly-Seber type models
We propose the use of finite mixtures of continuous distributions in modelling the process by which new individuals, that arrive in groups, become part of a wildlife population. We demonstrate this approach using a data set of migrating semipalmated sandpipers (Calidris pussila) for which we extend existing stopover models to allow for individuals to have different behaviour in terms of their stop
Authors
Eleni Matechou, Geoff K. Nicholls, Byron J. T. Morgan, Jaime A. Collazo, James E. Lyons
Projected gains and losses of wildlife habitat from bioenergy-induced landscape change
Domestic and foreign renewable energy targets and financial incentives have increased demand for woody biomass and bioenergy in the southeastern United States. This demand is expected to be met through purpose-grown agricultural bioenergy crops, short-rotation tree plantations, thinning and harvest of planted and natural forests, and forest harvest residues. With results from a forest economics mo
Authors
Nathan M. Tarr, Matthew J. Rubino, Jennifer K. Costanza, Alexa McKerrow, Jaime A. Collazo, Robert C. Abt
Bioenergy production and forest landscape change in the southeastern United States
Production of woody biomass for bioenergy, whether wood pellets or liquid biofuels, has the potential to cause substantial landscape change and concomitant effects on forest ecosystems, but the landscape effects of alternative production scenarios have not been fully assessed. We simulated landscape change from 2010 to 2050 under five scenarios of woody biomass production for wood pellets and liqu
Authors
Jennifer K. Costanza, Robert C. Abt, Alexa McKerrow, Jaime A. Collazo
An evaluation of rapid methods for monitoring vegetation characteristics of wetland bird habitat
Wetland managers benefit from monitoring data of sufficient precision and accuracy to assess wildlife habitat conditions and to evaluate and learn from past management decisions. For large-scale monitoring programs focused on waterbirds (waterfowl, wading birds, secretive marsh birds, and shorebirds), precision and accuracy of habitat measurements must be balanced with fiscal and logistic constrai
Authors
Brian G. Tavernia, James E. Lyons, Brian W. Loges, Andrew Wilson, Jaime A. Collazo, Michael C. Runge
Factors affecting wetland connectivity for wintering semipalmated sandpipers (Calidris pusilla) in the Caribbean
Wetland connectivity provides migratory shorebirds varying options to meet energy requirements to survive and complete their annual cycle. Multiple factors mediate movement and residency of spatially segregated wetlands. Information on these factors is lacking in the tropics, yet such information is invaluable for conservation design. The influence of seven biotic and abiotic factors on local move
Authors
Morgan A. Parks, Jaime A. Collazo, Katsi R. Ramos Alvarez
Change in numbers of resident and migratory shorebirds at the Cabo Rojo Salt Flats, Puerto Rico, USA (1985–2014)
North American migratory shorebirds have declined markedly since the 1980s, underscoring the importance of population surveys to conduct status and trend assessments. Shorebird surveys were conducted during three multi-year periods between 1985 and 2014 and used to assess changes in numbers and species composition at the Cabo Rojo Salt Flats, Puerto Rico, USA, a site of regional importance in the
Authors
Morgan A. Parks, Jaime A. Collazo, Jose A. Colon, Katsi R. Ramos Alvarez, Oscar Diaz
Occupancy dynamics in human-modified landscapes in a tropical island: implications for conservation design
AimAvian communities in human-modified landscapes exhibit varying patterns of local colonization and extinction rates, determinants of species occurrence. Our objective was to model these processes to identify habitat features that might enable movements and account for occupancy patterns in habitat matrices between the Guanica and Susua forest reserves. This knowledge is central to conservation d
Authors
Julissa I. Irizarry, Jaime A. Collazo, Stephen J. Dinsmore
Climate change and water resources in a tropical island system: Propagation of uncertainty from statistically downscaled climate models to hydrologic models
Many tropical islands have limited water resources with historically increasing demand, all potentially affected by a changing climate. The effects of climate change on island hydrology are difficult to model due to steep local precipitation gradients and sparse data. This work uses 10 statistically downscaled general circulation models (GCMs) under two greenhouse gas emission scenarios to evaluat
Authors
Ashley E. Van Beusekom, William A. Gould, Adam J. Terando, Jaime A. Collazo
Modeling climate change, urbanization, and fire effects on Pinus palustris ecosystems of the southeastern U.S.
Managing ecosystems for resilience and sustainability requires understanding how they will respond to future anthropogenic drivers such as climate change and urbanization. In fire-dependent ecosystems, predicting this response requires a focus on how these drivers will impact fire regimes. Here, we use scenarios of climate change, urbanization and management to simulate the future dynamics of the
Authors
Jennifer Costanza, Adam J. Terando, Alexa McKerrow, Jaime A. Collazo