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Full-Text Articles in Physical Sciences and Mathematics
Habitat, Climate, And Raptors As Factors In The Northern Bobwhite Decline: A Multi-Scale Analysis, John T. Edwards, Fidel Hernández, David B. Wester, Leonard A. Brennan, Chad Parent, Robert Perez
Habitat, Climate, And Raptors As Factors In The Northern Bobwhite Decline: A Multi-Scale Analysis, John T. Edwards, Fidel Hernández, David B. Wester, Leonard A. Brennan, Chad Parent, Robert Perez
National Quail Symposium Proceedings
Landscape-level processes such as habitat loss and fragmentation are primarily responsible for the declines in northern bobwhite (Colinus virginianus). These landscape processes generally occur at a scale beyond that of traditional quail studies and may involve not only habitat loss and fragmentation but also broad-scale changes in climate trends and predation risk. However, reductions in usable space and changes in habitat configuration at smaller scales may also reduce population viability. It is therefore imperative to study relationships to bobwhite populations at multiple scales. The objective of our research is to quantify to what extent habitat loss and fragmentation, …
Do Movement Patterns And Habitat Use Differ Between Optimal- And Suboptimal-Sized Northern Bobwhite Coveys?, Christopher K. Williams, Roger Applegate, Anthony R. Ives
Do Movement Patterns And Habitat Use Differ Between Optimal- And Suboptimal-Sized Northern Bobwhite Coveys?, Christopher K. Williams, Roger Applegate, Anthony R. Ives
National Quail Symposium Proceedings
The group size of social animals and spatial structure of the environment can affect group behavior and movement decisions. Our objective was to investigate movement patterns and habitat use of northern bobwhite coveys (Colinus virginianus) of different size. Using radiotelemetry, we continuously monitored covey group size, daily movement, and habitat use on 12 independent 259-ha study areas in eastern Kansas, USA, during the winters between 1997 and 2000. We used correlated random walk models and fractal dimension models to determine if covey size affected movement characteristics or habitat selection. Intermediate-sized coveys (9–12 individuals, close to optimal covey size) …
Impacts Of Habitat Fragmentation On Northern Bobwhites In The Gulf Coast Prairie Landscape Conservation Cooperative, Katherine S. Miller, Leonard A. Brennan, Humberto L. Perotto-Baldivieso, Fidel Hernández, Eric D. Grahmann, Atiye Z. Okay, X. Ben Wu, Markus J. Peterson, Heather Hannusch, Jose Mata, Jaclyn Robles
Impacts Of Habitat Fragmentation On Northern Bobwhites In The Gulf Coast Prairie Landscape Conservation Cooperative, Katherine S. Miller, Leonard A. Brennan, Humberto L. Perotto-Baldivieso, Fidel Hernández, Eric D. Grahmann, Atiye Z. Okay, X. Ben Wu, Markus J. Peterson, Heather Hannusch, Jose Mata, Jaclyn Robles
National Quail Symposium Proceedings
The northern bobwhite (Colinus virginianus) has experienced range wide declines over the last several decades, primarily due to loss and fragmentation of habitat. As populations decline, there is a need for understanding factors that impact bobwhite population persistence at local and regional spatial scales. Our goal was to assess changes in land use and their relationship to bobwhite declines at 3 different spatial scales (region, county, and home range) in Texas, Oklahoma, and Louisiana. We used North American Breeding Bird Survey (BBS) data from 1974-2014 to create abundance maps and trends. At the regional scale, we compared bobwhite …