Forest Edges Negatively Affect Golden-Cheeked Warbler Nest Survival

Peak, Rebecca G.

doi:10.1650/8274.1

Cited by 52 publications

(45 citation statements)

References 38 publications

(49 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This result could be explained by hunting which takes place in this region during the Doves' breeding period (from 3 July to 31 August), but also by the continuous presence of children, especially during summer holidays (from June to September) and the great period of harvesting of oranges which is immediately followed by that of tree pruning (from March to September). Declines in nest survival could also reflect a change in predator activity over the course of the breeding season (Peak 2007). Unfortunately, we did not monitor these nest predators or collect data on their activities and behaviours, but some field observations showed that snake activity is more important during the summer months than in the spring.…”

Section: Discussionmentioning

confidence: 99%

Are Moroccan fruit orchards suitable breeding habitats for Turtle DovesStreptopelia turtur?

Hanane¹,

Baamal

2011

Bird Study

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 99%

Are Moroccan fruit orchards suitable breeding habitats for Turtle DovesStreptopelia turtur?

Hanane¹,

Baamal

2011

Bird Study

View full text Add to dashboard Cite

“…The installation contains some of the largest remaining contiguous patches of Golden-cheeked Warbler habitat in the Lampasas Cut Plain region of its breeding range (Wahl et al 1990). Estimates of survival of Golden-cheeked Warbler nests on the installation demonstrate that Fort Hood functions as high-quality breeding habitat and thus plays a critical role in maintaining this endangered species' longterm viability (Peak 2007).…”

Section: Study Areamentioning

confidence: 99%

“…(2) forest-edge density should affect the warbler's density negatively because occurrence is negatively correlated with amount of and distance from edge (DeBoer andDiamond 2006, Sperry 2007) and forest edges affect nest survival negatively (Peak 2007, Reidy et al 2009 (3) patch size should affect density positively because occurrence (DeBoer and Diamond 2006, Magness et al 2006, Collier et al 2010) and reproductive success (Fink 1996, Coldren 1998) are positively correlated with patch size and; (4) proportion of forest cover should positively affect density because the overall amount of forest in the landscape is an important predictor of occurrence (DeBoer and Diamond 2006, Magness et al 2006, Collier et al 2010.…”

Section: Introductionmentioning

confidence: 99%

Amount and Type of Forest Cover and Edge Are Important Predictors of Golden-cheeked Warbler Density

Peak¹,

Thompson²

2013

The Condor

Self Cite

View full text Add to dashboard Cite

Considered endangered by the U.S. Fish and Wildlife Service, the Golden-cheeked Warbler (Setophaga chrysoparia) breeds exclusively in the juniper-oak (Juniperus ashei-Quercus spp.) woodlands of central Texas. Large-scale, spatially explicit models that predict population density as a function of habitat and landscape variables can provide important insight for its management and recovery. We used distance sampling to model detection probability and to estimate the density and abundance of singing male Golden-cheeked Warblers on Fort Hood Military Reservation. We used an information-theoretic approach to evaluate hypotheses concerning the effects of proportion of forest type and forest cover, forest-edge density, and patch size on density. We fitted generalized linear models with detection probability as an offset term to predict density as a function of the habitat and landscape variables, calculate a model-based density and abundance estimate, and map density across the area sampled. The design-based estimates were 0.39 males ha"' and 7557 singing males. The most supported model contained proportion of forest type and forest cover, both of which had a positive effect on density, as well as forest-edge density, which had a negative effect. The model-based estimates of 0.39 males ha"' and 7571 singing males were greater than estimates extrapolated from intensive territory monitoring. Knowledge of factors affecting Golden-cheeked Warbler density can be used to inform recovery efforts, and our density model can be used to assess the effects of various activities proposed for military training and of environmental disturbance on warbler densities.Resumen. La especie Setophaga chrysoparia, considerada en peligro por el Servicio de Vida Silvestre y Pesca de EUA, cria exclusivamente en los bosques de enebro y roble {Juniperus ashei-Quercus spp.) del centro de Texas. Modelos espacialmente explícitos de gran escala que predicen la densidad poblacional como una función de las variables del habitat y del paisaje pueden brindar información importante para su manejo y recuperación. Usamos muéstreos de distancia para modelar la probabilidad de detección y para estimar la densidad y abundancia de individuos machos canoros de S. chrysoparia en la Reserva Militar Fuerte Hood. Usamos un enfoque de la teoria de la información para evaluar las hipótesis concernientes sobre los efectos de la proporción del tipo de bosque y de la cobertura del bosque, de la densidad de borde de bosque y del tamaño del parche sobre la densidad. Ajustamos modelos lineales generalizados con la probabilidad de detección como un término de compensación para predecir la densidad como función de las variables del habitat y del paisaje, calcular la densidad y abundancia estimada basada en el modelo y mapear la densidad a lo largo del área muestreada. Las estimaciones basadas en el diseño fueron 0.39 machos ha"' y 7557 machos canoros. El modelo con mejor soporte contuvo una proporción de tipo de bosque y de cobertura de bosque, ambos de los cuales tuvieron un ...

show abstract

“…Further, information concerning more recent habitat dynamics across the entire warbler breeding range is lacking. An up-to-date understanding of the dynamics of warbler breeding habitat patch metrics is particularly important since increased forest edge, decreased habitat patch size, and reduced connectivity of habitat patches have been linked to deleterious effects on warbler reproductive success (Peak 2007, Reidy et al 2009, increased genetic differentiation among warbler populations (Lindsay et al 2008), a decline in genetic diversity over time (Athrey et al 2011), and reduced warbler occupancy of habitat patches (Collier et al 2010, Warren et al 2013. Notably, habitat patches with lower occupancy probabilities have been reported to support lower warbler abundances The objective of this study was to model rangewide warbler breeding habitat dynamics from 2000 to 2010 using available GIS data and Landsat imagery.…”

Section: Introductionmentioning

confidence: 99%

Spatiotemporal variation in range‐wide Golden‐cheeked Warbler breeding habitat

et al. 2013

View full text Add to dashboard Cite

Abstract. Habitat availability ultimately limits the distribution and abundance of wildlife species.Consequently, it is paramount to identify where wildlife habitat is and understand how it changes over time in order to implement large-scale wildlife conservation plans. Yet, no work has quantified the degree of change in range-wide breeding habitat for the Golden-cheeked Warbler (Setophaga chrysoparia), despite the species being listed as endangered by the U.S. Federal Government. Thus, using available GIS data and Landsat imagery we quantified range-wide warbler breeding habitat change from 1999-2001 to 2010-2011. We detected a 29% reduction in total warbler breeding habitat and found that warbler breeding habitat was removed and became more fragmented at uneven rates across the warbler's breeding range during this time period. This information will assist researchers and managers in prioritizing breeding habitat conservation efforts for the species and provides a foundation for more realistic carrying capacity scenarios when modeling Golden-cheeked Warbler populations over time. Additionally, this study highlights the need for future work centered on quantifying Golden-cheeked Warbler movement rates and distances in order to assess the degree of connectivity between increasingly fragmented habitat patches.

show abstract

Forest Edges Negatively Affect Golden-Cheeked Warbler Nest Survival

Cited by 52 publications

References 38 publications

Are Moroccan fruit orchards suitable breeding habitats for Turtle DovesStreptopelia turtur?

Are Moroccan fruit orchards suitable breeding habitats for Turtle DovesStreptopelia turtur?

Amount and Type of Forest Cover and Edge Are Important Predictors of Golden-cheeked Warbler Density

Spatiotemporal variation in range‐wide Golden‐cheeked Warbler breeding habitat

Contact Info

Product

Resources

About