Evaluation of the Landscape Surrounding Northern Bobwhite Nest Sites: A Multiscale Analysis

White, Craig; Schweitzer, Sara H.; Moore, Clinton T.; Parnell, Ira B.; Lewis-Weis, Lynn A.

doi:10.2193/0022-541x(2005)69[1528:eotlsn]2.0.co;2

Cited by 25 publications

(17 citation statements)

References 14 publications

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“…In contrast, brood resource selection was strongly influenced by management activities, suggesting broods were attracted to areas altered by management, likely as a result of the change in vegetation composition and structure. Nest-site selection has been studied extensively for bobwhite in multiple landscapes across their range (Klimstra and Roseberry 1975, Taylor et al 1999a, White et al 2005, Singh et al 2010. Klimstra and Roseberry (1975) reported 41% of nests occurred in idle fields, dominated by perennial grasses and forbs; our results were similar; 75% of nests were in open herbaceous or NWSG, which consisted of perennial grasses and forbs in an idle state.…”

Section: Discussionsupporting

confidence: 69%

“…Nest‐site selection has been studied extensively for bobwhite in multiple landscapes across their range (Klimstra and Roseberry , Taylor et al , White et al , Singh et al , Tanner et al ). Klimstra and Roseberry () reported 41% of nests occurred in idle fields, dominated by perennial grasses and forbs; our results were similar; 75% of nests were in open herbaceous or NWSG, which consisted of perennial grasses and forbs in an idle state.…”

Section: Discussionmentioning

confidence: 99%

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Northern bobwhite breeding season ecology on a reclaimed surface mine

et al. 2016

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Surface coal mining and subsequent reclamation of surface mines have converted large forest areas into early successional vegetative communities in the eastern United States. This reclamation can provide a novel opportunity to conserve northern bobwhite (Colinus virginianus). We evaluated the influence of habitat management activities on nest survival, nest‐site selection, and brood resource selection on managed and unmanaged units of a reclaimed surface mine, Peabody Wildlife Management Area (Peabody), in west‐central Kentucky, USA, from 2010 to 2013. We compared resource selection, using discrete‐choice analysis, and nest survival, using the nest survival model in Program MARK, between managed and unmanaged units of Peabody at 2 spatial scales: the composition and configuration of vegetation types (i.e., macrohabitat) and vegetation characteristics at nest sites and brood locations (i.e., microhabitat). On managed sites, we also investigated resource selection relative to a number of different treatments (e.g., herbicide, disking, prescribed fire). We found no evidence that nest‐site selection was influenced by macrohabitat variables, but bobwhite selected nest sites in areas with greater litter depth than was available at random sites. On managed units, bobwhite were more likely to nest where herbicide was applied to reduce sericea lespedeza (Lespedeza cuneata) compared with areas untreated with herbicide. Daily nest survival was not influenced by habitat characteristics or by habitat management but was influenced by nest age and the interaction of nest initiation date and nest age. Daily nest survival was greater for older nests occurring early in the breeding season (0.99, SE < 0.01) but was lower for older nests occurring later in the season (0.08, SE = 0.13). Brood resource selection was not influenced by macrohabitat or microhabitat variables we measured, but broods on managed units selected areas treated with herbicide to control sericea lespedeza and were located closer to firebreaks and disked native‐warm season grass stands than would be expected at random. Our results suggest the vegetation at Peabody was sufficient without manipulation to support nesting and brood‐rearing northern bobwhite at a low level, but habitat management practices improved vegetation for nesting and brood‐rearing resource selection. Reproductive rates (e.g., nest survival and re‐nesting rates) at Peabody were lower than reported in other studies, which may be related to nutritional deficiencies caused by the abundance of sericea lespedeza. On reclaimed mine lands dominated by sericea lespedeza, we suggest continuing practices such as disking and herbicide application that are targeted at reducing sericea lespedeza to improve the vegetation for nesting and brood‐rearing bobwhite. © 2016 The Wildlife Society.

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Section: Discussionsupporting

confidence: 69%

Section: Discussionmentioning

confidence: 99%

Northern bobwhite breeding season ecology on a reclaimed surface mine

et al. 2016

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“…Other studies have suggested that more complex measures of habitat patchiness and landscape heterogeneity, such as we generated here with FRAGSTATS, would be more appropriate measures of edge effects and landscape variability than simple distance measurements (White et al 2005, Chapa‐Vargas and Robinson 2006, Koper and Schmiegelow 2006). However, we did not detect significant influences of landscape structure or anthropogenic disturbance on aplomado falcon nesting success.…”

Section: Discussionmentioning

confidence: 95%

Bayesian hierarchical model assessment of nest site and landscape effects on nest survival of aplomado falcons

Brown¹,

Collopy²

2011

J Wildl Manag

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We investigated potential effects of nest site and landscape scale factors, including anthropogenic disturbance and habitat patchiness, on the nesting success of a reintroduced population of northern aplomado falcons (Falco femoralis septentrionalis) in southern Texas. We monitored 62 nesting attempts during 2002–2004 in the Lower Rio Grande Valley. We developed hierarchical models describing daily nest survival rates (DSR) and compared the models using a Bayesian approach in R and WinBUGS. We considered possible effects of nest age, temporal trends, nest site variables, landscape structure, territory (a random effect), and 3 measures of anthropogenic disturbance: distance to paved road, proximity to power pole, and nocturnal light intensity. Whether evaluated by Deviance Information Criterion (DIC) scores or the models' overall posterior probabilities as estimated with a reversible jump Markov Chain Monte Carlo algorithm, none of our landscape or disturbance measures affected DSR. Rather, variation in DSR was best described by nest height, overhead cover, and nest source (artificial or natural). These nest site level factors may be manipulated by managers through provision of artificial nests. We recommend that artificial nests continue to be provided, as such nests are highly successful when located on moderately tall substrates, and they permit researchers to access nest contents for population monitoring. © 2011 The Wildlife Society.

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“…However, because urban environments are highly heterogeneous at a fine scale, large buffers based on LEs can include multiple habitats or resources, and it can be difficult to accurately identify which habitats and/or resources animals are using. Additionally, overlapping buffers, due to their large size, can be problematic when trying to differentiate the predictive landscape features of available and used areas [54]. Unless the error of GPS devices can be reduced through better technology, our results suggest that conclusions about resource and habitat selection in heterogeneous suburban environments should be made with caution, and other techniques that are not reliant on buffer sizes, such as Brownian bridges [51], [52] that incorporate location error directly into the analysis, should be considered.…”

Section: Discussionmentioning

confidence: 99%

An Evaluation of the Accuracy and Performance of Lightweight GPS Collars in a Suburban Environment

et al. 2013

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The recent development of lightweight GPS collars has enabled medium-to-small sized animals to be tracked via GPS telemetry. Evaluation of the performance and accuracy of GPS collars is largely confined to devices designed for large animals for deployment in natural environments. This study aimed to assess the performance of lightweight GPS collars within a suburban environment, which may be different from natural environments in a way that is relevant to satellite signal acquisition. We assessed the effects of vegetation complexity, sky availability (percentage of clear sky not obstructed by natural or artificial features of the environment), proximity to buildings, and satellite geometry on fix success rate (FSR) and location error (LE) for lightweight GPS collars within a suburban environment. Sky availability had the largest affect on FSR, while LE was influenced by sky availability, vegetation complexity, and HDOP (Horizontal Dilution of Precision). Despite the complexity and modified nature of suburban areas, values for FSR ( = 90.6%) and LE ( = 30.1 m) obtained within the suburban environment are comparable to those from previous evaluations of GPS collars designed for larger animals and within less built-up environments. Due to fine-scale patchiness of habitat within urban environments, it is recommended that resource selection methods that are not reliant on buffer sizes be utilised for selection studies.

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Evaluation of the Landscape Surrounding Northern Bobwhite Nest Sites: A Multiscale Analysis

Cited by 25 publications

References 14 publications

Northern bobwhite breeding season ecology on a reclaimed surface mine

Northern bobwhite breeding season ecology on a reclaimed surface mine

Bayesian hierarchical model assessment of nest site and landscape effects on nest survival of aplomado falcons

An Evaluation of the Accuracy and Performance of Lightweight GPS Collars in a Suburban Environment

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