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Environmental Sciences

2017

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Articles 1 - 30 of 238

Full-Text Articles in Physical Sciences and Mathematics

The Application And Usefulness Of Economic Analyses For Water Quality Management In Coastal Areas, Sheri L. Jewhurst, Kate K. Mulvaney, Marisa J. Mazzotta Dec 2017

The Application And Usefulness Of Economic Analyses For Water Quality Management In Coastal Areas, Sheri L. Jewhurst, Kate K. Mulvaney, Marisa J. Mazzotta

Journal of Ocean and Coastal Economics

Economic studies are increasingly sought as tools to contribute to water quality management in estuaries and coastal communities, yet little is known about how the results from existing studies have been received and utilized by the organizations who solicited them. We interviewed managers from eight organizations who solicited economic studies over the past 15 years to understand how useful the studies were to their organizations and what economic research would be most helpful for their management needs. In terms of utility for coastal managers, there are a number of limitations in the studies. These include lack of site-specific data, the …

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Use Of An Alternative Natural Weed Suppressant: Effects Of Parboiled Rice Hull Mulch On The Growth Of Container Weeds, Amy R. Fields-Taylor, Vanessa Slinger-Friedman Dec 2017

Use Of An Alternative Natural Weed Suppressant: Effects Of Parboiled Rice Hull Mulch On The Growth Of Container Weeds, Amy R. Fields-Taylor, Vanessa Slinger-Friedman

The Kennesaw Journal of Undergraduate Research

The Chattahoochee Nature Center (CNC) is one of the leading educational centers in Georgia about the ecology of the Chattahoochee River. Due to lack of man power, keeping down the weeds in the CNC plant nursery is one of those tasks that often gets left undone. The nursery becomes overgrown with invasive weed species. Understandably, they must sometimes resort to the use of herbicides, such as Roundup®, to keep the hundreds of native and endangered species of plants housed at CNC from being choked out by invasive weeds. This study tests the ability to suppress weed growth by use of …

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The Blurred Line Between Photic And Aphotic Environments: A Large Mexican Cave With Almost No Dark Zone, Luis M. Mejía-Ortíz, Tanja Pipan, David C. Culver, Peter Sprouse Dec 2017

The Blurred Line Between Photic And Aphotic Environments: A Large Mexican Cave With Almost No Dark Zone, Luis M. Mejía-Ortíz, Tanja Pipan, David C. Culver, Peter Sprouse

International Journal of Speleology

Sistema Muévelo Rico is a 1.2 km long cave in Quintana Roo, less than 2 km from the Caribbean Sea. We measured illuminance to a level of 0.1 lux, organic matter (weight loss on ignition), temperature, and relative humidity. The last two were measured at hourly intervals for nearly one year. Approximately one-third of the cave has illuminance values greater than 0.01 lux, and most of the rest of the cave has light as well. Temperature and relative humidity were relatively constant, but they showed a daily cycle at all stations, albeit with different strengths. Organic matter averaged 8%, intermediate …

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Cataloging Wonder: The Art And Science Of The Collection, Christine Metzger Dec 2017

Cataloging Wonder: The Art And Science Of The Collection, Christine Metzger

The STEAM Journal

The Exploring Science in the Studio National Science Foundation grant funded three initiatives at California College of the Arts, a private four-year art and design college in the San Francisco Bay Area. The grant sponsored annual Science-in-the-Studio which embedded scientists into the art and design studio curriculum, the creation of Mobile Units for Scientific Exploration (MUSE) and a new collection of science materials, equipment, and natural specimens, and a national symposium on integrating science into the art and design studio curriculum. Approximately 30 SitS classes have been offered since 2010, and the Exploring Science in the Studio symposium was convened …

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Assessing Preservation Priorities Of Caves And Karst Areas Using The Frequency Of Endemic Cave-Dwelling Species, Eugen Nitzu, Marius Vlaicu, Andrei Giurginca, Ioana N. Meleg, Ionut Popa, Augustin Nae, Ştefan Baba Dec 2017

Assessing Preservation Priorities Of Caves And Karst Areas Using The Frequency Of Endemic Cave-Dwelling Species, Eugen Nitzu, Marius Vlaicu, Andrei Giurginca, Ioana N. Meleg, Ionut Popa, Augustin Nae, Ştefan Baba

International Journal of Speleology

Endemic and rare species as bioindicators of habitat vulnerability were used to develop protection and management plans for biotope prioritization (mainly islands habitats, lava tubes or groundwaters). Due to their narrow distribution, the endemic species (species confined to a restricted geographic area) are more susceptible to ecological disequilibrium and habitat loss than the widespread ones. Consequently, endemics become endangered in the context of ecological disturbance caused by anthropogenic pressure, making them suitable candidates to assess environmental preservation needs. Taking into consideration that most of the stygobitic and troglobitic species are endemic and confined to specific karst areas, based on their …

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Eco-Justice Reformation: Re-Imagining Ecumenical Witness In The Context Of Climate Injustice, George Zachariah Dec 2017

Eco-Justice Reformation: Re-Imagining Ecumenical Witness In The Context Of Climate Injustice, George Zachariah

Consensus

No abstract provided.

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Grace's "Making Peace With The Earth: Action And Advocacy For Climate Justice" (Book Review), Dolores Yilibuw Dec 2017

Grace's "Making Peace With The Earth: Action And Advocacy For Climate Justice" (Book Review), Dolores Yilibuw

The Christian Librarian

No abstract provided.

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Changing Tides In Water Management: Policy Options To Encourage Greater Recycling Of Fracking Wastewater, Romany M. Webb Nov 2017

Changing Tides In Water Management: Policy Options To Encourage Greater Recycling Of Fracking Wastewater, Romany M. Webb

William & Mary Environmental Law and Policy Review

The U.S. has recently experienced a domestic energy renaissance, made possible by technological advances, enabling the development of unconventional oil and gas resources. Vital to this development is hydraulic fracturing (“fracking”), whereby fluid is injected underground at high pressure to fracture the rock, thereby enabling the flow of oil and gas. Fracking has recently faced growing opposition with many concerned about its environmental impacts, particularly its potential to adversely affect water resources, because fracking uses vast amounts of fresh water that ends up as contaminated wastewater. Most of this wastewater is disposed of through underground injection, resulting in its permanent …

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A Fix For A Thirsty World - Making Direct And Indirect Reuse Legally Possible, Heather Payne Nov 2017

A Fix For A Thirsty World - Making Direct And Indirect Reuse Legally Possible, Heather Payne

William & Mary Environmental Law and Policy Review

Reliably providing safe drinking water to the public is an essential function of state and local governments. Across the United States, government officials and public water system managers are exploring mechanisms for ensuring water security. One method for increasing public drinking water security that has garnered the attention of water officials and the public is returning treated wastewater to the drinking water supply. However, in the absence of federal regulations on water reuse, states need guidance to develop the statutory framework necessary to make potable reuse legal. This Article details the processes of direct and indirect potable reuse and reviews …

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Water, Lead, And Environmental Justice: Easing The Flint Water Crisis With A Public Water Contamination Liability Fund, Jonathon Lubrano Nov 2017

Water, Lead, And Environmental Justice: Easing The Flint Water Crisis With A Public Water Contamination Liability Fund, Jonathon Lubrano

William & Mary Environmental Law and Policy Review

No abstract provided.

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The Kimberley Process As A Framework For Regulating Conflict Oil And Gas Sourced From The South China Sea, Jamie Huffman Nov 2017

The Kimberley Process As A Framework For Regulating Conflict Oil And Gas Sourced From The South China Sea, Jamie Huffman

William & Mary Environmental Law and Policy Review

No abstract provided.

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Pope Francis, Laudato Si', And U.S. Environmentalism, Jonathan Z. Cannon, Stephen Cushman Nov 2017

Pope Francis, Laudato Si', And U.S. Environmentalism, Jonathan Z. Cannon, Stephen Cushman

William & Mary Environmental Law and Policy Review

No abstract provided.

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T-Rex, Jurassic Park And Nuclear Power: Nuclear Power Plants And The Courts After The Fukushima Nuclear Accident, Shigenori Matsui Nov 2017

T-Rex, Jurassic Park And Nuclear Power: Nuclear Power Plants And The Courts After The Fukushima Nuclear Accident, Shigenori Matsui

William & Mary Environmental Law and Policy Review

No abstract provided.

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The Importance Of Regional And Landscape Context And Climate Change To Northern Bobwhite Management, Frank R. Thompson Iii Nov 2017

The Importance Of Regional And Landscape Context And Climate Change To Northern Bobwhite Management, Frank R. Thompson Iii

National Quail Symposium Proceedings

Long-term declines in northern bobwhite (Colinus virginianus) in the United States are presumably due to decades of habitat loss or degradation at a national scale. Food and fiber production characterized by replacement of open woodlands and savannas by dense forest, intensification of agriculture, and conversion of native grasslands to nonnative pastures have degraded habitats for most grassland and early successional birds. Declines in bobwhite and associated species occurred within this context at a scale that has overwhelmed wildlife management efforts. However, with understanding of scale and context, managers could sustain these species in some future landscapes. Increasing urbanization …

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Breeding Season Space Use And Habitat Selection Of Adult Female Scaled And Gambel's Quail In West Texas, Richard A. Temple, Louis Harveson, Ryan S. Luna Nov 2017

Breeding Season Space Use And Habitat Selection Of Adult Female Scaled And Gambel's Quail In West Texas, Richard A. Temple, Louis Harveson, Ryan S. Luna

National Quail Symposium Proceedings

We used radiotelemetry to investigate breeding-season (1 Apr–1 Sep, 2012 and 2013) home ranges and habitat selection of adult female scaled (Callipepla squamata) and Gambel’s quail (C. gambelii) in the eastern Chihuahuan Desert, Texas. Mean breeding-season home range (95% fixed kernel) for scaled quail was 145.02 ± 23.56 ha (range = 22.03–538.24 ha) and 156.32 ± 13.04 ha (range = 66.15– 270.74 ha) for Gambel’s quail. Mean core-use area (50% fixed kernel) for scaled quail was 31.38 ± 4.80 ha (range = 4.03–111.36 ha) and 32.87 ± 2.61 ha (range = 12.19–52.36 ha) for Gambel’s quail. …

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The Saga Of The Masked Bobwhite: Lessons Learned And Unlearned, David E. Brown, Kevin B. Clark Nov 2017

The Saga Of The Masked Bobwhite: Lessons Learned And Unlearned, David E. Brown, Kevin B. Clark

National Quail Symposium Proceedings

No bird has generated so much interest and controversy as has the masked bobwhite (Colinus virginianus ridgwayi). From its discovery in 1884 to the present, this gallinaceous game bird has captured the attention of hunter-naturalists, ornithologists, collectors, game breeders, conservationists and bureaucrats. Believed threatened with extinction throughout its 130 year history, the masked bobwhite prompted several collecting expeditions, a survey technique study, a plethora of propagation attempts, and the purchase of an 117,464 acre refuge by the federal government, and expenditures totaling millions of dollars. Yet, despite propagated stock existing in a captive facility on Buenos Aires National …

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Conservation Status Of The Masked Bobwhite In Sonora, Mexico, David García-Solórzano, Edgardo López-González, Carlos González-Rebeles Islas Nov 2017

Conservation Status Of The Masked Bobwhite In Sonora, Mexico, David García-Solórzano, Edgardo López-González, Carlos González-Rebeles Islas

National Quail Symposium Proceedings

The historical distribution of the endangered masked bobwhite (Colinus virginianus ridgwayi) ranged from southern Arizona, United States, to Central Sonora, Mexico. Research in Sonora the past 30 years focused on the largest known populations, near the town of Benjamin Hill on the El Carrizo ranch. Research and perceptions by local residents pointed to a decline in masked bobwhite over the past decade. We evaluated existence of the subspecies during 2013-15 by searching transects and interviewing local residents. Our evaluation yielded no validated observations of masked bobwhite, and subsequently we call for further coordinated population monitoring and the development …

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Survival And Nesting Ecology Of Scaled Quail In The Trans-Pecos, Texas, Carlos E. Gonzalez Gonzalez, Louis A. Harveson, Ryan S. Luna Nov 2017

Survival And Nesting Ecology Of Scaled Quail In The Trans-Pecos, Texas, Carlos E. Gonzalez Gonzalez, Louis A. Harveson, Ryan S. Luna

National Quail Symposium Proceedings

Scaled quail (Callipepla squamata) are one of the most ecologically and economically important wildlife species in the Trans-Pecos, because they are the primary upland game bird in the Chihuahuan Desert. Using radiotelemetry, we evaluated survival (Kaplan–Meier) and nesting success of quail on 3 study sites in the Trans-Pecos, Texas: one (Santiago Mountain Ranch, central Brewster Co.) was supplemented with milo (Sorghum bicolor) year-round, the second (Lado Ranch, south Culberson Co.) never used supplements, and the third (Apache Ranch, central Culberson Co.) was supplemented with quail blocks. We trapped and radiocollared 164 female quail collectively across all …

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Efficacy Of A Soft Release Strategy For Translocating Scaled Quail In The Rolling Plains Of Texas, Rebekah E. Ruzicka, Kara B. Campbell, Michelle C. Downey, Dale Rollins, Bradley Kubečka, Matthew Poole, Donald C. Ruthven Nov 2017

Efficacy Of A Soft Release Strategy For Translocating Scaled Quail In The Rolling Plains Of Texas, Rebekah E. Ruzicka, Kara B. Campbell, Michelle C. Downey, Dale Rollins, Bradley Kubečka, Matthew Poole, Donald C. Ruthven

National Quail Symposium Proceedings

Scaled Quail (Callipepla squamata) populations have become locally extinct and spatially fragmented in the Rolling Plains ecoregion of Texas. Translocating Scaled Quail from core to declining populations could augment populations or re-establishing extinct populations. Although translocations of scaled quail have been attempted in Texas, none have been documented and none have attempted to identify best practices. Release strategy (i.e., hard or soft release) is a factor that can influence the success of a translocation. Our objective was to compare daily apparent survival of scaled quail translocated to the Rolling Plains between 2 release treatment groups: hard- and soft-release. …

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Effects Of Source Population And Release Strategy On Survival And Dispersal Of Translocated Scaled Quail In The Rolling Plains Of Texas—A Preliminary Report, Rebekah E. Ruzicka, Dale Rollins Nov 2017

Effects Of Source Population And Release Strategy On Survival And Dispersal Of Translocated Scaled Quail In The Rolling Plains Of Texas—A Preliminary Report, Rebekah E. Ruzicka, Dale Rollins

National Quail Symposium Proceedings

Scaled quail (Callipepla squamata) have declined 3.5% annually in Texas from 1966-2013, but declines have not been uniform across the state. The Rolling Plains Ecoregion has experienced a 6.8% decrease during this period, while the western Edwards Plateau has remained stable. Habitat loss that has contributed to scaled quail decline also inhibits recolonization. Translocation has become an increasingly popular tool to reestablish populations for recreational or conservational purposes. Overall success rate of translocations is low and has prompted research into factors that contribute to the establishment of a self-sustaining population. Source population and release strategy are two translocation …

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Changes In Habitat Use Of Montezuma Quail In Response To Tree Canopy Reduction In The Capitan Mountains Of New Mexico, Ryan S. Luna, Elizabeth A. Oaster, Karlee D. Cork, Ryan O'Shaughnessy Nov 2017

Changes In Habitat Use Of Montezuma Quail In Response To Tree Canopy Reduction In The Capitan Mountains Of New Mexico, Ryan S. Luna, Elizabeth A. Oaster, Karlee D. Cork, Ryan O'Shaughnessy

National Quail Symposium Proceedings

Montezuma quail (Cyrtonyx montezumae) are unique among quail with respect to clutch size, diet, covey dynamics, and habitat use. With the exception of a few notable early studies, there is relatively little information on the ecology of Montezuma quail. Pervious research has indicated that one of the primary habitats utilized by Montezuma quail is pinyon–juniper (Pinus spp.–Juniperus spp.) woodlands. Throughout many areas of the southwestern United States, pinyon–juniper woodlands are often targeted for thinning projects. Many studies have been conducted on the amount of canopy cover needed by other quail species. However, data on characteristics of …

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A Presence-Absence Survey To Monitor Montezuma Quail In Western Texas, Cristela Gonzalez Sanders, Fidel Hernández, Leonard A. Brennan, Andrew N. Tri, Robert Perez Nov 2017

A Presence-Absence Survey To Monitor Montezuma Quail In Western Texas, Cristela Gonzalez Sanders, Fidel Hernández, Leonard A. Brennan, Andrew N. Tri, Robert Perez

National Quail Symposium Proceedings

Developing an effective monitoring program for Montezuma quail (Cyrtonyx montezumae) is challenging because the technique must be practical for surveying vast, remote landscapes while accounting for the species’ low detectability. We used call-back surveys within a presence–absence framework to estimate occupancy and detection probability of Montezuma quail and used this information in conjunction with habitat data to develop an estimated probability of occurrence map for the species. We established survey points at 4 sites in western Texas (n = 20–30 points/site) and conducted 5 repeat surveys/season during June–August 2007 and 2008. We documented abiotic conditions (temperature, time …

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Survival Demographics Of Montezuma Quail In Southeast Arizona, Pedro M. Chavarria, Nova J. Silvy, Roel R. Lopez, Donald S. Davis, Angel Montoya Nov 2017

Survival Demographics Of Montezuma Quail In Southeast Arizona, Pedro M. Chavarria, Nova J. Silvy, Roel R. Lopez, Donald S. Davis, Angel Montoya

National Quail Symposium Proceedings

Many facets of Montezuma quail (Cyrtonyx montezumae mearnsi) population dynamics, such as survival and causes of mortality, are unknown because of limited or lack of mark–recapture studies on wild populations of this species. Much of what is known about this species comes from casual observations in the field or from dog-assisted flush-count surveys. Further insight into rate and causes of mortality for this species is necessary to ensure proper conservation measures. We evaluated survival and causes of mortality of Montezuma quail in southeastern Arizona from winter 2007 to spring 2010. Survival was determined from quail captured, radiotagged, and …

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Ranges And Movements Of Montezuma Quail In Southeast Arizona, Pedro M. Chavarria, Nova J. Silvy, Roel R. Lopez, Donald S. Davis, Angel Montoya Nov 2017

Ranges And Movements Of Montezuma Quail In Southeast Arizona, Pedro M. Chavarria, Nova J. Silvy, Roel R. Lopez, Donald S. Davis, Angel Montoya

National Quail Symposium Proceedings

Historical assumptions about Montezuma quail movements and home ranges at the population level are limited due to the lack of markrecapture studies on this species from which solid conclusions can be derived. Such information is crucial for estimating population sizes, densities, and rate of emigration and immigration throughout the landscape. Our study examined home range size of 29 Montezuma quail and movements of 65 quail in southeast Arizona from 2008–2010. We used radio telemetry to follow radio-tagged birds in 3 study sites that varied in vegetation composition and topography. Mean home range size (MCP) was about was similar (51 ha) …

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Population Trends And A Revised Management Plan For Quail In California, Katherine S. Miller, Matt G. Meshriy, Scott S. Gardner Nov 2017

Population Trends And A Revised Management Plan For Quail In California, Katherine S. Miller, Matt G. Meshriy, Scott S. Gardner

National Quail Symposium Proceedings

California supports a diversity of habitats suitable for mountain quail (Oreortyx pictus), California quail (Callipepla californica), and Gambel’s quail (Callipepla gambelii). These three species require different habitats for foraging, nesting and brood-rearing, and overwinter survival, yet most published information focuses on California quail. Currently the state-wide surveys for quail are limited to the North American Breeding Bird Survey (BBS) and the Audubon Christmas Bird Count. We used BBS data (1970–2013) to create abundance maps for quail throughout California. We developed 5-year averages to account for boom-and-bust cycles, and then established 100 random points for …

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Evaluation Of Population Indices And Estimators For Scaled Quail In The Rolling Plains Of Texas, Bradley Kubečka, John T. Edwards, Fidel Hernández, Dale Rollins Nov 2017

Evaluation Of Population Indices And Estimators For Scaled Quail In The Rolling Plains Of Texas, Bradley Kubečka, John T. Edwards, Fidel Hernández, Dale Rollins

National Quail Symposium Proceedings

Accurate and precise population indices and estimators are important to gain reliable knowledge and make appropriate management decisions. Indices and estimators for scaled quail (Callipepla squamata), however, have not been evaluated thoroughly. Our objectives are to compare relationships among 8 years of roadside counts, spring call counts, and mark-recapture data obtained from the Rolling Plains Quail Research Ranch in Fisher County, TX, USA. Furthermore, we assess the efficacy of distance-based helicopter surveys as a method for scaled quail density estimates as compared to mark-recapture estimates for 2016–2017.

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Effect Of Meso-Mammal Nest Predator Activity On Northern Bobwhite Nest Success, Alexander L. Jackson, William E. Palmer, D. Clay Sisson, Theron M. Terhune Ii, James A. Martin Nov 2017

Effect Of Meso-Mammal Nest Predator Activity On Northern Bobwhite Nest Success, Alexander L. Jackson, William E. Palmer, D. Clay Sisson, Theron M. Terhune Ii, James A. Martin

National Quail Symposium Proceedings

Perceived changes in predator-prey dynamics along with documented declines of northern bobwhite (Colinus virginianus) have created a renewed interest from biologists and managers about the role meso-mammals play in shaping bobwhite population trajectories. As part of a larger effort to understand this predator-prey relationship, we evaluated meso-mammal activity on sites where bobwhite demographic data was simultaneously being collected via radio- telemetry. During 1999–2006 we conducted 66 meso-mammal activity surveys using scent stations on 16 sites in 3 southeastern states (Florida, Georgia, and Alabama). We calculated an index of meso-mammal activity (PI), for each site, as the average number …

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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 Nov 2017

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, …

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Landscape Features Affecting Northern Bobwhite Predator-Specific Nest Failures In Southeastern Usa, Susan N. Ellis-Felege, Shannon E. Albeke, Nathan P. Nibbelink, Michael J. Conroy, D. Clay Sisson, William E. Palmer, John P. Carroll Nov 2017

Landscape Features Affecting Northern Bobwhite Predator-Specific Nest Failures In Southeastern Usa, Susan N. Ellis-Felege, Shannon E. Albeke, Nathan P. Nibbelink, Michael J. Conroy, D. Clay Sisson, William E. Palmer, John P. Carroll

National Quail Symposium Proceedings

Nest predation is a critical component in avian productivity and typically is the leading cause of nest failure for most birds. Several landscape features are thought to drive the behavioral interaction between northern bobwhite (Colinus virginianus; e.g., nest placement) and their predators (e.g., search methods for food acquisition). In order to understand habitat characteristics influencing predation, we studied bobwhite nests using 24-hour near-infrared video cameras. We monitored 675 bobwhite nests with cameras on 3 properties in northern Florida and southern Georgia, USA, during 2000–2006. To test the association between nest failures and specific failure causes with landscape structure, …

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Impacts Of Red Imported Fire Ants On Northern Bobwhite Nest Survival, Angelina M. Haines, D. Clay Sisson, Robert A. Gitzen, Christopher A. Lepczyk, William E. Palmer, Theron M. Terhune Ii Nov 2017

Impacts Of Red Imported Fire Ants On Northern Bobwhite Nest Survival, Angelina M. Haines, D. Clay Sisson, Robert A. Gitzen, Christopher A. Lepczyk, William E. Palmer, Theron M. Terhune Ii

National Quail Symposium Proceedings

Invasive species are a large management issue because of extensive environmental and economic damage. The red imported fire ant (RIFA, Solenopsis invicta) is an invasive species of growing concern in wildlife management in the United States because of its increasing distribution, difficulty to suppress, and aggressive predation on native invertebrates, herpetofauna, birds, and small mammals. Managers of the northern bobwhite (Colinus virginianus) have questioned the direct impact of RIFA on bobwhite nest success, particularly the factors that might influence the level of nest predation. We hypothesized that RIFA predation on northern bobwhite would vary by location and …

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