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: 52
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
Elk habitat suitability map for North Carolina
Although eastern elk (Cervus elaphus canadensis) were extirpated from the eastern United States in the 19th century, they were successfully reintroduced in the North Carolina portion of the Great Smoky Mountains National Park in the early 2000s. The North Carolina Wildlife Resources Commission (NCWRC) is evaluating the prospect of reintroducing the species in other locations in the state to augmen
Authors
Steven G. Williams, David T. Cobb, Jaime A. Collazo
Niche restriction and conservatism in a neotropical psittacine: the case of the Puerto Rican parrot
The factors which govern species‘ distribution and abundance are myriad, and together constitute the ecological niche of a given species. Because abiotic factors are arguably the most profound of the factors influencing niche boundaries and thus, species distributions, substantial changes in either climatic or habitat-related parameters can be expected to produce interrelated and profound niche sh
Authors
Thomas H. White, Jaime A. Collazo, Stephen J. Dinsmore, I. C. Llerandi-Roman
Strategic conservation planning for the Eastern North Carolina/Southeastern Virginia Strategic Habitat Conservation Team
The Eastern North Carolina/Southeastern Virginia Strategic Habitat Conservation Team (ENCSEVA) is a partnership among local federal agencies and programs with a mission to apply Strategic Habitat Conservation to accomplish priority landscape-level conservation within its geographic region. ENCSEVA seeks to further landscape-scale conservation through collaboration with local partners. To accomplis
Authors
Louise B. Alexander-Vaughn, Jaime A. Collazo, C. Ashton Drew
Developing an outcome-based biodiversity metric in support of the field to market project: Final report
Our objective was to create a metric that would calculate the relative impact of common commercial agricultural practices on terrestrial vertebrate richness. We sought to define impacts in fields (including field borders) of the southeastern region’s commercial production of corn, wheat, soy, and cotton. The metric is intended to serve as an educational tool, allowing producers to see how operatio
Authors
C. Ashton Drew, Louise B. Alexander-Vaughn, Jaime A. Collazo, Alexa McKerrow, John Anderson
Species abundance and potential biological control services in shade vs. sun coffee in Puerto Rico
Birds, lizards and insects were surveyed in three sun and three shade coffee plantations in Puerto Rico to provide a comprehensive comparison of biodiversity between plantations types and to identify potential interrelationships (e.g., biological or natural control services) between members of each taxon and coffee pests. Abundance of avian species, including insectivorous species, was significant
Authors
Rena R. Borkhataria, Jaime A. Collazo, Martha J. Groom
Use of occupancy models to evaluate expert knowledge-based species-habitat relationships
Expert knowledge-based species-habitat relationships are used extensively to guide conservation planning, particularly when data are scarce. Purported relationships describe the initial state of knowledge, but are rarely tested. We assessed support in the data for suitability rankings of vegetation types based on expert knowledge for three terrestrial avian species in the South Atlantic Coastal Pl
Authors
Monica N. Iglecia, Jaime A. Collazo, Alexa McKerrow
Science and Products
Filter Total Items: 52
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
Elk habitat suitability map for North Carolina
Although eastern elk (Cervus elaphus canadensis) were extirpated from the eastern United States in the 19th century, they were successfully reintroduced in the North Carolina portion of the Great Smoky Mountains National Park in the early 2000s. The North Carolina Wildlife Resources Commission (NCWRC) is evaluating the prospect of reintroducing the species in other locations in the state to augmen
Authors
Steven G. Williams, David T. Cobb, Jaime A. Collazo
Niche restriction and conservatism in a neotropical psittacine: the case of the Puerto Rican parrot
The factors which govern species‘ distribution and abundance are myriad, and together constitute the ecological niche of a given species. Because abiotic factors are arguably the most profound of the factors influencing niche boundaries and thus, species distributions, substantial changes in either climatic or habitat-related parameters can be expected to produce interrelated and profound niche sh
Authors
Thomas H. White, Jaime A. Collazo, Stephen J. Dinsmore, I. C. Llerandi-Roman
Strategic conservation planning for the Eastern North Carolina/Southeastern Virginia Strategic Habitat Conservation Team
The Eastern North Carolina/Southeastern Virginia Strategic Habitat Conservation Team (ENCSEVA) is a partnership among local federal agencies and programs with a mission to apply Strategic Habitat Conservation to accomplish priority landscape-level conservation within its geographic region. ENCSEVA seeks to further landscape-scale conservation through collaboration with local partners. To accomplis
Authors
Louise B. Alexander-Vaughn, Jaime A. Collazo, C. Ashton Drew
Developing an outcome-based biodiversity metric in support of the field to market project: Final report
Our objective was to create a metric that would calculate the relative impact of common commercial agricultural practices on terrestrial vertebrate richness. We sought to define impacts in fields (including field borders) of the southeastern region’s commercial production of corn, wheat, soy, and cotton. The metric is intended to serve as an educational tool, allowing producers to see how operatio
Authors
C. Ashton Drew, Louise B. Alexander-Vaughn, Jaime A. Collazo, Alexa McKerrow, John Anderson
Species abundance and potential biological control services in shade vs. sun coffee in Puerto Rico
Birds, lizards and insects were surveyed in three sun and three shade coffee plantations in Puerto Rico to provide a comprehensive comparison of biodiversity between plantations types and to identify potential interrelationships (e.g., biological or natural control services) between members of each taxon and coffee pests. Abundance of avian species, including insectivorous species, was significant
Authors
Rena R. Borkhataria, Jaime A. Collazo, Martha J. Groom
Use of occupancy models to evaluate expert knowledge-based species-habitat relationships
Expert knowledge-based species-habitat relationships are used extensively to guide conservation planning, particularly when data are scarce. Purported relationships describe the initial state of knowledge, but are rarely tested. We assessed support in the data for suitability rankings of vegetation types based on expert knowledge for three terrestrial avian species in the South Atlantic Coastal Pl
Authors
Monica N. Iglecia, Jaime A. Collazo, Alexa McKerrow