Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
Articles 61 - 78 of 78
Full-Text Articles in Physical Sciences and Mathematics
National Bobwhite Conservation Initiative Focus Area Monitoring In The 2c Focus Area, Missouri, Beth Emmerich, W. T. White, E. Lee Metcalf
National Bobwhite Conservation Initiative Focus Area Monitoring In The 2c Focus Area, Missouri, Beth Emmerich, W. T. White, E. Lee Metcalf
National Quail Symposium Proceedings
The Missouri Department of Conservation (MDC) began establishing Quail Focus Areas (QFAs) on private lands in 2004. The goal of QFAs is to increase and expand quail habitat management efforts at a larger scale. Because most (93%) of Missouri’s landscape is in private ownership, habitat improvement programs on private lands have greater potential to impact quail populations than on public lands alone. In spring of 2013, a group of MDC staff and Quail Forever biologists began monitoring bobwhite quail (Colinus virginianus) and songbirds in a portion of the 2C QFA in Carroll County, Missouri as well as in …
Habitat Space Used By Northern Bobwhites And Texas Tortoises On South Texas Rangelands, Ross O. Couvillon, Leonard A. Brennan, Fidel Hernández, Bart M. Ballard, Thomas V. Dailey
Habitat Space Used By Northern Bobwhites And Texas Tortoises On South Texas Rangelands, Ross O. Couvillon, Leonard A. Brennan, Fidel Hernández, Bart M. Ballard, Thomas V. Dailey
National Quail Symposium Proceedings
South Texas rangelands are increasingly managed for recreational hunting, particularly northern bobwhite (Colinus virgianus). Effects of habitat management for game species on non-game species are largely unknown. Large private ranches used for recreational hunting could also provide habitat for the threatened Texas tortoise (Gopherus berlandieri). We studied habitat use of Texas tortoises and northern bobwhites on a private ranch in South Texas that undergoes active habitat management. In 2015, tortoises (n = 12) and bobwhite hens (n = 42) were tracked during their active and breeding seasons, respectively, with radio-telemetry. Satellite images were analyzed …
Effects Of Tanglehead Expansion On Bobwhite Habitat Use In South Texas, John T. Edwards, Fidel Hernández, David B. Webster, Leonard A. Brennan, Chad J. Parent, Fred C. Bryant
Effects Of Tanglehead Expansion On Bobwhite Habitat Use In South Texas, John T. Edwards, Fidel Hernández, David B. Webster, Leonard A. Brennan, Chad J. Parent, Fred C. Bryant
National Quail Symposium Proceedings
Usable space for northern bobwhite (Colinus virginianus) has been reduced across a large portion of South Texas rangelands due to the spread of non-native, invasive grasses. A native grass, tanglehead (Heteropogon contortus) has rapidly expanded its dominance in the western Sand Sheet of South Texas within the last 10-15 years. It has formed high-density monocultures, similar to non-native grasses, which are associated with losses of forb and grass diversity as well as bare ground, which are key components of bobwhite habitat. The objectives of our research were to 1) determine selection-avoidance of habitat features by bobwhites, …
An Evaluation Of Northern Bobwhite Conservation Research: A Call For Large-Scale Studies, Lex J. Gomez, Kelly S. Reyna
An Evaluation Of Northern Bobwhite Conservation Research: A Call For Large-Scale Studies, Lex J. Gomez, Kelly S. Reyna
National Quail Symposium Proceedings
Northern bobwhite (Colinus virginianus) populations have declined throughout the species’ range since the 1960s. Habitat loss and degradation are thought to have largely contributed to this decline by reducing the amount of space and resources required to sustain viable quail populations. Previous studies have attempted to address this issue by focusing on ranch-level management of bobwhites instead of on the effectiveness of large-scale techniques. Here, we review current and historical studies that have facilitated the implementation of management techniques on multiple scales. In doing so, we will also reveal the shortcomings of such studies by highlighting their narrowed …
Long-Term Population Stability In The Greater Red Hills Region Amidst Range-Wide Declines: A Case For Integrated Management, Theron M. Terhune Ii, D. Clay Sisson, William E. Palmer, Shane D. Wellendorf
Long-Term Population Stability In The Greater Red Hills Region Amidst Range-Wide Declines: A Case For Integrated Management, Theron M. Terhune Ii, D. Clay Sisson, William E. Palmer, Shane D. Wellendorf
National Quail Symposium Proceedings
All natural habitats possess inherent conservation value, including the presence of rare or endemic species, provision of ecosystem services, historic landmarks, or resources harvested. Large-scale loss of natural habitats and deterioration of fire-mediated habitats has caused precipitous declines of native fauna and flora in the southeastern US. The role of private landholdings in wildlife and conservation is often underestimated, and consumptive use of wildlife is commonly viewed as counterproductive to sustainability. However, in the Greater Red Hills region (GRH) of north Florida and south Georgia, intentional management for northern bobwhite (Colinus virginianus) on private lands has not only …
The Role Of Joint Ventures In Northern Bobwhite Conservation, Stephen Demaso
The Role Of Joint Ventures In Northern Bobwhite Conservation, Stephen Demaso
National Quail Symposium Proceedings
Partnerships are crucial part of northern bobwhite (Colinus virginianus) conservation. A key principle is that no single entity can effectively address the complex landscape-level conservation issues to sustain populations and their supporting habitats in perpetuity. Joint Ventures (JVs) use a partnership based approach to deliver specific bird population and habitat objectives within their geography. Currently, 7 of the 12 JVs that occur in the North American bobwhite range have bobwhites listed as a priority species. This presentation will cover various topics including: 1) the history of JVs in North America; 2) an overview of the variety of models …
Predicting Northern Bobwhite Habitat In Semiarid Rangeland Using Landsat Imagery, Jeffrey G. Whitt, Kelly S. Reyna
Predicting Northern Bobwhite Habitat In Semiarid Rangeland Using Landsat Imagery, Jeffrey G. Whitt, Kelly S. Reyna
National Quail Symposium Proceedings
Multiple studies have attempted to model northern bobwhite (Colinus virginianus) distribution using classified remotely sensed imagery in combination with pattern recognition software. These models tend to be more accurate in humid subtropical regions. To identify bobwhite habitat in subhumid and semiarid rangeland, we performed our own classification on 4 LANDSAT scenes of Clay County, Texas, from July and December 2015. Stands of mature little bluestem (Schizachyrium scoparium) provide excellent bobwhite nesting cover and could be identified using LANDSAT imagery. Habitat was scored from 0 to 1.0 based on estimated range health, presence of little bluestem, and …
Vegetation And Arthropod Responses To Brush Reduction By Grubbing And Stacking, Carter Crouch, J. Alfonso Ortega-Santos, David B. Wester, Fidel Hernández, Leonard A. Brennan, Greta L. Schuster
Vegetation And Arthropod Responses To Brush Reduction By Grubbing And Stacking, Carter Crouch, J. Alfonso Ortega-Santos, David B. Wester, Fidel Hernández, Leonard A. Brennan, Greta L. Schuster
National Quail Symposium Proceedings
Grubbing is a mechanical brush-reduction technique that allows targeting of mesquite (Prosopis glandulosa) and huisache (Vachellia farnesiana) and can be used to open lanes for hunting northern bobwhites (Colinus virginianus). Follow-up treatments of stacking allow the piling up of downed brush. We initiated this study on the Santa Gertrudis Division of the King Ranch, Inc., Texas, to determine effects of grubbing and stacking on vegetation and arthropod communities important to bobwhite. We hypothesized that grubbing and stacking would be able to selectively remove mesquite and huisache while leaving mixed brush species largely intact. We …
Temperature Assessment On A Reclaimed Surface Mine During Northern Bobwhite Breeding Season: Considerations For Habitat Management, Donald M. Yow, Jeremy P. Orange, John J. Morgan, Gary Sprandel, Danna L. Baxley, Eric Williams
Temperature Assessment On A Reclaimed Surface Mine During Northern Bobwhite Breeding Season: Considerations For Habitat Management, Donald M. Yow, Jeremy P. Orange, John J. Morgan, Gary Sprandel, Danna L. Baxley, Eric Williams
National Quail Symposium Proceedings
Ground-level air temperatures were assessed within 4 distinct habitat areas on a managed reclaimed surface mine at Peabody Wildlife Management Area, Kentucky, 26 June–17 July 2015, during the northern bobwhite (Colinus virginianus) brood season. Habitat consisted of disked and nondisked areas of native grass and an invasive species, sericea lespedeza (Lespedeza cuneata). Disked areas offered more open space for bobwhite mobility and experienced higher average temperatures than nondisked sites. Although statistically significant, differences in air temperature between disked and nondisked areas were likely too small to have practical implications for bobwhite habitat management in Kentucky under …
Temporal And Spatial Assessment Of Usable Space And Cover Type Interspersion For Northern Bobwhites On Private Farmlands In Southwestern Ohio, Robert J. Gates, Mark J. Wiley, Adam K. Janke, Marjorie R. Liberati
Temporal And Spatial Assessment Of Usable Space And Cover Type Interspersion For Northern Bobwhites On Private Farmlands In Southwestern Ohio, Robert J. Gates, Mark J. Wiley, Adam K. Janke, Marjorie R. Liberati
National Quail Symposium Proceedings
Contemporary landscape change driven by socio-economic forces and advances in agricultural technology do not favor northern bobwhites (Colinus virginianus) in the Midwestern United States. The challenge of bobwhite conservation is to provide sufficient quantities of habitat with optimal configurations in proportions that satisfy needs throughout the year on private-owned working lands. We radio-tracked 58 coveys and 98 individual birds throughout the year in 2009-10 and 2010-11 on privately owned farmland in southwestern Ohio. We investigated temporal changes in usable space from use-availability data. Estimated proportions of usable space based on analyses of habitat selection across four study sites …
Strategic Habitat Conservation For Declining Grassland Wildlife Populations In The Oaks And Prairies Joint Venture, James Giocomo, Johnathan Hayes, Kenneth Gee, Jeff Raasch, Robert Perez
Strategic Habitat Conservation For Declining Grassland Wildlife Populations In The Oaks And Prairies Joint Venture, James Giocomo, Johnathan Hayes, Kenneth Gee, Jeff Raasch, Robert Perez
National Quail Symposium Proceedings
Degradation and conversion of functioning grassland ecosystems in North America has driven significant declines in grassland wildlife populations across multiple taxa. In an effort to address declines in the grasslands of Oklahoma and Texas, a number of governmental agencies and Non-Governmental Organizations have partnered to form the Oaks and Prairies Joint Venture (OPJV) to more strategically and collaboratively deliver conservation actions in this region. With northern bobwhite (Colinus virginianus) as the flagship species, OPJV has worked to implement a fully integrated Strategic Habitat Conservation framework that works at multiple scales to conduct biological planning, landscape conservation design, habitat …
Fall Quail Densities On Public Lands In Missouri: A Decade Of Monitoring, Beth Emmerich, Thomas V. Dailey
Fall Quail Densities On Public Lands In Missouri: A Decade Of Monitoring, Beth Emmerich, Thomas V. Dailey
National Quail Symposium Proceedings
Northern bobwhite (Colinus virginianus) fall population density has been determined annually since 2005 on 19 public land areas managed by the Missouri Department of Conservation (MDC). These demonstration areas, known as Quail Emphasis Areas (QEAs), were created as part of the MDC Strategic Guidance for Northern Bobwhite Recovery: 2003-2013. Management of QEA bobwhite populations, habitat and hunting has been evaluated periodically at the area, regional and statewide scale, and the program has been perpetuated in an updated 2014-2024 Strategic Guidance. QEAs were selected to represent MDC administrative regions and are highly variable in many aspects, e.g., size range …
Monitoring Northern Bobwhite Populations Reduces Uncertainty About Management Effectiveness: A Paradigm Of Empiricism And Hope, Adam W. Green, Dallas P. Grimes, Greg Hagan, Richard Hamrick, Craig Harper, Patrick Keyser, John J. Morgan, I. B. Parnell, Reggie Thackston, Theron M. Terhune Ii, James A. Martin
Monitoring Northern Bobwhite Populations Reduces Uncertainty About Management Effectiveness: A Paradigm Of Empiricism And Hope, Adam W. Green, Dallas P. Grimes, Greg Hagan, Richard Hamrick, Craig Harper, Patrick Keyser, John J. Morgan, I. B. Parnell, Reggie Thackston, Theron M. Terhune Ii, James A. Martin
National Quail Symposium Proceedings
Northern bobwhite (Colinus virginianus) populations have been declining across their range for decades because of habitat loss, degradation, and fragmentation. Habitat restoration and management—sometimes coupled with other cultural practices—has long been the paradigm for bobwhite conservation. However, the lack of peer-reviewed empirical evidence supporting the success of active management to increase bobwhite density and growth rates has created skepticism and uncertainty among some conservationists and user groups. Thus, our objectives were to test the basic prediction that active management can increase bobwhite populations across a large spatial extent and highlight the importance of population monitoring to refine management …
Response Of Northern Bobwhites To Habitat Improvement On Private Lands In The Rolling Plains Of Texas, C. Brad Dabbert, Robin Verble-Pearson
Response Of Northern Bobwhites To Habitat Improvement On Private Lands In The Rolling Plains Of Texas, C. Brad Dabbert, Robin Verble-Pearson
National Quail Symposium Proceedings
Northern bobwhites (Colinus virginianus) in the Rolling Plains of Texas have experienced significant declines in recent years. Examination of the Texas Parks and Wildlife Department Quail Roadside Counts reveals a steep decline since 2007 in the Rolling Plains of Texas. Biologists only detected 2.91 birds/counting route in 2013. This number marked 2 years in a row of record lows (counts started in 1978) below the long-term mean of 19.7 birds/route (Texas Parks and Wildlife 2015). These numbers are not surprising given the historically damaging drought Texas has suffered. Texas Parks and Wildlife Department counts improved to 7.5 bobwhites/counting …
Population Response Of Three Quail Species To Habitat Restoration In South Texas, Eric D. Grahmann, Fidel Hernández, Leonard A. Brennan, Timothy E. Fulbright, Carter Crouch, Michael W. Hehman, David Heft, Robert Perez, Fred C. Bryant
Population Response Of Three Quail Species To Habitat Restoration In South Texas, Eric D. Grahmann, Fidel Hernández, Leonard A. Brennan, Timothy E. Fulbright, Carter Crouch, Michael W. Hehman, David Heft, Robert Perez, Fred C. Bryant
National Quail Symposium Proceedings
Maintaining and increasing usable space is paramount for maintaining and increasing wild quail. Aside from weather and other factors that can temporarily reduce densities, range-wide, no factor has as much influence on quail populations as the amount of habitat present across the landscape. In the field of quail management, ‘‘bad news’’ is the norm, as many articles begin by explaining how a select species has declined. Here we provide good news and use 4 empirical examples of population increases for 3 quail species following creation of usable space and restoration of patch connectivity. From 2008–2014, a suite of independent projects …
Progress Of The National Bobwhite Conservation Initiative, Donald F. Mckenzie, John J. Morgan, Thomas V. Dailey
Progress Of The National Bobwhite Conservation Initiative, Donald F. Mckenzie, John J. Morgan, Thomas V. Dailey
National Quail Symposium Proceedings
Northern bobwhites (Colinus virginianus) have declined precipitously over 5 decades because of a decline in habitat, largely a result of agricultural intensification and inadequate management of natural plant succession. In response, quail biologists developed strategic and operational plans, and formed a national partnership of state and federal agencies, bobwhite institutions, non-government organizations, universities and private citizens. The early history of these efforts was reviewed in 2006 at the Sixth National Quail Symposium. Over the past 10 years, exponential growth occurred, including establishment of a home for national bobwhite conservation at the University of Tennessee, and funding from the …
A Focused Habitat Approach For Northern Bobwhite Restoration In Kentucky, John J. Morgan, John M. Yeiser, Danna L. Baxley, Gary Sprandel, Ben A. Robinson, Keith Wethington
A Focused Habitat Approach For Northern Bobwhite Restoration In Kentucky, John J. Morgan, John M. Yeiser, Danna L. Baxley, Gary Sprandel, Ben A. Robinson, Keith Wethington
National Quail Symposium Proceedings
The Kentucky Department of Fish and Wildlife Resources has measured northern bobwhite (Colinus virginianus) population trends since 1960. During that span, northern bobwhite steadily declined because clean agriculture, fescue-sod, plant succession, and development eroded habitat suitability. Multiple efforts have failed with regard to restoring northern bobwhite numbers. Over 3.5 million northern bobwhite were released by the Department over a three decade period. Habitat efforts on private lands were deployed for over 20 years with mixed results. Support for the habitat restoration efforts waned. In 2008, the Department unveiled a new strategy centered on restoring concentrated habitat in focal …
Translocation As A Population Restoration Technique For Northern Bobwhites: A Review And Synthesis, James A. Martin, Roger D. Applegate, Thomas V. Dailey, Michelle Downey, Beth Emmerich, Fidel Hernández, Mark M. Mcconnell, Kelly S. Reyna, Dale Rollins, Rebekah E. Ruzicka, Theron M. Terhune Ii
Translocation As A Population Restoration Technique For Northern Bobwhites: A Review And Synthesis, James A. Martin, Roger D. Applegate, Thomas V. Dailey, Michelle Downey, Beth Emmerich, Fidel Hernández, Mark M. Mcconnell, Kelly S. Reyna, Dale Rollins, Rebekah E. Ruzicka, Theron M. Terhune Ii
National Quail Symposium Proceedings
Northern bobwhite (Colinus virginianus) abundance has declined precipitously for decades across much of the species range, to the point of widespread local, regional, and statewide extirpation. Because of successful translocations of other gallinaceous birds, bobwhite enthusiasts increasingly call for use of the approach. Consequently, the National Bobwhite Technical Committee (NBTC), on behalf of state agencies, requested a review and recommendation by the NBTC Science Subcommittee. Thus, our paper is co-authored by invited experts and includes reviews of peer-reviewed publications, manuscripts in these proceedings, state agency reports, experience by co-authors, and a survey of perspectives on translocations by state …