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: 50
Occupancy and abundance of Eleutherodactylus wightmanae and E. brittoni along elevational gradients in west-central Puerto Rico
Populations of Eleutherodactylus species in Puerto Rico have declined in recent decades due to habitat loss and long-term climatic changes. The conservation of these habitat specialists requires an understanding of factors influencing their abundance and distribution, which at present is scant. We estimated occupancy probability and the probability of encountering ≥2 individuals of E. wightmanae (
Authors
Kelen D. Monroe, Jaime A. Collazo, Krishna Pacifici, Brian J. Reich, Alberto R. Puente-Rolón, Adam J. Terando
Sampling bees in tropical forests and agroecosystems: A review
Bees are the predominant pollinating taxa, providing a critical ecosystem service upon which many angiosperms rely for successful reproduction. Available data suggests that bee populations worldwide are declining, but scarce data in tropical regions precludes assessing their status and distribution, impact on ecological services, and response to management actions. Herein, we reviewed >150 papers
Authors
Sara G. Prado, Hien T. Ngo, Jaime A. Florez, Jaime A. Collazo
Indicator-driven conservation planning across terrestrial, freshwater aquatic, and marine ecosystems of the south Atlantic, USA
Systematic conservation planning, a widely used approach to identify priority lands and waters, uses efficient, defensible, and transparent methods aimed at conserving biodiversity and ecological systems. Limited financial resources and competing land uses can be major impediments to conservation; therefore, participation of diverse stakeholders in the planning process is advantageous to help addr
Authors
Bradley A. Pickens, Rua S. Mordecai, C. Ashton Drew, Louise B. Alexander-Vaughn, Amy S. Keister, Hilary L.C. Morris, Jaime A. Collazo
Occupancy and abundance of Eleutherodactylus frogs in coffee plantations in Puerto Rico
Shaded coffee plantations are of conservation value for many taxa, particularly for resident avifauna in the face of extensive landscape changes. Yet, little is known about the value of coffee plantations for amphibians because there are scant demographic data to index their value among species with different habitat preferences. We estimated the probability of occupancy of three frog species: Ele
Authors
Kelen D. Monroe, Jaime A. Collazo, Krishna Pacifici, Brian J. Reich, Alberto R. Puente-Rolón, Adam J. Terando
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
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
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
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
Science and Products
Filter Total Items: 50
Occupancy and abundance of Eleutherodactylus wightmanae and E. brittoni along elevational gradients in west-central Puerto Rico
Populations of Eleutherodactylus species in Puerto Rico have declined in recent decades due to habitat loss and long-term climatic changes. The conservation of these habitat specialists requires an understanding of factors influencing their abundance and distribution, which at present is scant. We estimated occupancy probability and the probability of encountering ≥2 individuals of E. wightmanae (
Authors
Kelen D. Monroe, Jaime A. Collazo, Krishna Pacifici, Brian J. Reich, Alberto R. Puente-Rolón, Adam J. Terando
Sampling bees in tropical forests and agroecosystems: A review
Bees are the predominant pollinating taxa, providing a critical ecosystem service upon which many angiosperms rely for successful reproduction. Available data suggests that bee populations worldwide are declining, but scarce data in tropical regions precludes assessing their status and distribution, impact on ecological services, and response to management actions. Herein, we reviewed >150 papers
Authors
Sara G. Prado, Hien T. Ngo, Jaime A. Florez, Jaime A. Collazo
Indicator-driven conservation planning across terrestrial, freshwater aquatic, and marine ecosystems of the south Atlantic, USA
Systematic conservation planning, a widely used approach to identify priority lands and waters, uses efficient, defensible, and transparent methods aimed at conserving biodiversity and ecological systems. Limited financial resources and competing land uses can be major impediments to conservation; therefore, participation of diverse stakeholders in the planning process is advantageous to help addr
Authors
Bradley A. Pickens, Rua S. Mordecai, C. Ashton Drew, Louise B. Alexander-Vaughn, Amy S. Keister, Hilary L.C. Morris, Jaime A. Collazo
Occupancy and abundance of Eleutherodactylus frogs in coffee plantations in Puerto Rico
Shaded coffee plantations are of conservation value for many taxa, particularly for resident avifauna in the face of extensive landscape changes. Yet, little is known about the value of coffee plantations for amphibians because there are scant demographic data to index their value among species with different habitat preferences. We estimated the probability of occupancy of three frog species: Ele
Authors
Kelen D. Monroe, Jaime A. Collazo, Krishna Pacifici, Brian J. Reich, Alberto R. Puente-Rolón, Adam J. Terando
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
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
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
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