Jaime Collazo, PhD (Former Employee)
Science and Products
Filter Total Items: 91
Developing an outcome-based biodiversity metric in support of the field to market project: Final report 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...
Authors
C. Ashton Drew, Louise B. Alexander-Vaughn, Jaime A. Collazo, Alexa McKerrow, John Anderson
Modeling habitat dynamics accounting for possible misclassification Modeling habitat dynamics accounting for possible misclassification
Land cover data are widely used in ecology as land cover change is a major component of changes affecting ecological systems. Landscape change estimates are characterized by classification errors. Researchers have used error matrices to adjust estimates of areal extent, but estimation of land cover change is more difficult and more challenging, with error in classification being confused...
Authors
Sophie Veran, Kevin J. Kleiner, Remi Choquet, Jaime Collazo, James D. Nichols
Species abundance and potential biological control services in shade vs. sun coffee in Puerto Rico 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
Authors
Rena R. Borkhataria, Jaime A. Collazo, Martha J. Groom
Use of occupancy models to evaluate expert knowledge-based species-habitat relationships 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...
Authors
Monica N. Iglecia, Jaime A. Collazo, Alexa McKerrow
Expert knowledge as a foundation for the management of secretive species and their habitat Expert knowledge as a foundation for the management of secretive species and their habitat
In this chapter, we share lessons learned during the elicitation and application of expert knowledge in the form of a belief network model for the habitat of a waterbird, the King Rail (Rallus elegans). A belief network is a statistical framework used to graphically represent and evaluate hypothesized cause and effect relationships among variables. Our model was a pilot project to...
Authors
C. Ashton Drew, Jaime Collazo
Science summary in support of Manatee Protection Area (MPA) design in Puerto Rico Science summary in support of Manatee Protection Area (MPA) design in Puerto Rico
The Antillean manatee (Trichechus manatus manatus), a subspecies of the West Indian manatee, is listed as endangered by the US Department of Interior. In accordance with its listing, the U.S. Fish and Wildlife Service’s Caribbean Field Office (USFWS) is mandated to create one or more Manatee Protection Areas (MPAs) for Puerto Rico. Designation of these areas must comply with the legal...
Authors
C. Ashton Drew, Louise B. Alexander-Vaughn, Jaime A. Collazo
Science and Products
Filter Total Items: 91
Developing an outcome-based biodiversity metric in support of the field to market project: Final report 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...
Authors
C. Ashton Drew, Louise B. Alexander-Vaughn, Jaime A. Collazo, Alexa McKerrow, John Anderson
Modeling habitat dynamics accounting for possible misclassification Modeling habitat dynamics accounting for possible misclassification
Land cover data are widely used in ecology as land cover change is a major component of changes affecting ecological systems. Landscape change estimates are characterized by classification errors. Researchers have used error matrices to adjust estimates of areal extent, but estimation of land cover change is more difficult and more challenging, with error in classification being confused...
Authors
Sophie Veran, Kevin J. Kleiner, Remi Choquet, Jaime Collazo, James D. Nichols
Species abundance and potential biological control services in shade vs. sun coffee in Puerto Rico 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
Authors
Rena R. Borkhataria, Jaime A. Collazo, Martha J. Groom
Use of occupancy models to evaluate expert knowledge-based species-habitat relationships 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...
Authors
Monica N. Iglecia, Jaime A. Collazo, Alexa McKerrow
Expert knowledge as a foundation for the management of secretive species and their habitat Expert knowledge as a foundation for the management of secretive species and their habitat
In this chapter, we share lessons learned during the elicitation and application of expert knowledge in the form of a belief network model for the habitat of a waterbird, the King Rail (Rallus elegans). A belief network is a statistical framework used to graphically represent and evaluate hypothesized cause and effect relationships among variables. Our model was a pilot project to...
Authors
C. Ashton Drew, Jaime Collazo
Science summary in support of Manatee Protection Area (MPA) design in Puerto Rico Science summary in support of Manatee Protection Area (MPA) design in Puerto Rico
The Antillean manatee (Trichechus manatus manatus), a subspecies of the West Indian manatee, is listed as endangered by the US Department of Interior. In accordance with its listing, the U.S. Fish and Wildlife Service’s Caribbean Field Office (USFWS) is mandated to create one or more Manatee Protection Areas (MPAs) for Puerto Rico. Designation of these areas must comply with the legal...
Authors
C. Ashton Drew, Louise B. Alexander-Vaughn, Jaime A. Collazo