Forest management and temporal effects on food abundance for a ground-foraging bird (Catharus guttatus)

Johnston, Jason C.; Holberton, Rebecca L.

doi:10.1016/j.foreco.2009.07.012

Cited by 10 publications

(6 citation statements)

References 61 publications

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“…Currently, logistic regression models are among the most popular procedures to predict a species distribution (Schröder 2008). This method is used to describe the relationship between a binary response variable and one or more explanatory variables (Hosmer and Lemeshow 2000). However, so far, little attention has been paid on how variables interact.…”

Section: Introductionmentioning

confidence: 99%

Small-scale habitat use of black grouse (Tetrao tetrix L.) and rock ptarmigan (Lagopus muta helvetica Thienemann) in the Austrian Alps

2011

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We investigated the small-scale habitat use of two grouse species, black grouse (Tetrao tetrix L.) and rock ptarmigan (Lagopus muta helvetica Thienemann) in a study area in the Austrian Central Alps in summer. To build habitat suitability models, we applied multiple logistic regression using presence-absence data from fieldwork as the response variable and a set of habitat characteristics as explanatory variables, respectively. To gain a better understanding of the mechanisms that drive habitat selection, we tested for two-way interaction terms before excluding any variables from the initial variable set. Four explanatory variables significantly contributed to the black grouse model: dwarf shrub cover, dwarf shrub height, patchiness and ant hills. The final model for rock ptarmigan contained three explanatory variables: dwarf shrub cover, rock cover and dwarf shrub height. Most notably, the interaction terms dwarf shrub cover×patchiness in the black grouse model and dwarf shrub cover×dwarf shrub height, rock cover×dwarf shrub height in the rock ptarmigan model point out trade-off mechanisms between food, cover and overview providing features. Thus, our models do not only identify the parameters that mainly drive habitat selection, but also deepen our understanding about the causal relationships between these factors. Therefore, the information gained in this study allows for a deduction of appropriate habitat management strategies and supports conservation efforts of local stakeholders.

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Section: Introductionmentioning

confidence: 99%

Small-scale habitat use of black grouse (Tetrao tetrix L.) and rock ptarmigan (Lagopus muta helvetica Thienemann) in the Austrian Alps

2011

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“…Given that increasingly dry conditions have been predicted for at least some Neotropical regions (Neelin et al 2006), understanding the relationships between rainfall, arthropod abundance, and the behavioral ecology of Neotropical insectivorous birds is important. However, as illustrated by our study and others (e.g., Johnston and Holberton 2009), relationships between food—both quantity and quality—and the foraging behavior of insectivorous tropical birds remain unclear. Further experimental, hypothesis‐driven studies will be needed to help elucidate these ecological links (Stutchbury and Morton 2001, Vuilleumier 2004).…”

Section: Discussionmentioning

confidence: 63%

Seasonal differences in rainfall, food availability, and the foraging behavior of Tropical Kingbirds in the southern Amazon Basin

Jahn

Levey

Mamani

et al. 2010

Journal of Field Ornithology

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Little is known about the relationship between seasonal food availability and the foraging strategies of insectivorous Neotropical birds. We studied a population of Tropical Kingbirds (Tyrannus melancholicus), a primarily insectivorous species, in eastern Bolivia to examine relationships between rainfall, food availability, and foraging strategies throughout the year. Our study site in the southern Amazon Basin was characterized by strong seasonal variation in the abundance of the kingbird's main insect prey (coleopterans and hymenopterans), with reduced abundance during the nonbreeding season which largely overlaps the dry season. Overall, mean search times for insect prey by Tropical Kingbirds during the breeding (96.9 ± 85.6 [SD] sec) and nonbreeding (83.7 ± 91.2 sec) seasons did not differ (P= 0.23). However, during the nonbreeding season, kingbird search times were negatively, but nonsignificantly, correlated with coleopteran abundance (r2= 0.43, P= 0.16) and significantly and negatively correlated with hymenopteran abundance (r2= 0.72, P= 0.03). Although insect abundance differed seasonally, kingbird search times did not, perhaps because kingbirds forage on a greater variety of insects during the nonbreeding season or, during the breeding season, kingbird search times may be influenced by the need to monitor and defend nests as well as constraints on the types of prey that can be fed to nestlings. However, the reduced abundance of their primary insect prey and negative relationships between the abundance of those prey and search times during the dry, nonbreeding season suggest that Tropical Kingbirds in southern Amazonia may be food limited, potentially explaining why some migrate and spend that season elsewhere.

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“…In contrast, pitfall traps are a metric of activity-abundance by primarily groundand litter-dwelling taxa. Other factors that may influence study results and confound interpretation and potential generalizations regarding macroarthropod response to disturbances include differences in the seasonal timing of sampling (Greenberg and Forrest 2003, Greenberg and others 2010, Johnston and Holberton 2009, Whitehead 2003; post-disturbance forest floor and microclimatic conditions; taxonomic levels (e.g., order, family, species) reported; and the geographic locations and ecosystems where studies are conducted (Pearce and Venier 2006). Time since disturbance could also affect results of studies addressing macroinvertebrate response (Pearce andVenier 2006, Perry andHerms 2016).…”

Section: Discussionmentioning

confidence: 99%

Short-term response of ground-dwelling macroarthropods to shelterwood harvests in a productive Southern Appalachian upland hardwood forest

Westby-Gibson¹,

Greenberg²,

Moorman³

et al. 2017

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Forest management and temporal effects on food abundance for a ground-foraging bird (Catharus guttatus)

Cited by 10 publications

References 61 publications

Small-scale habitat use of black grouse (Tetrao tetrix L.) and rock ptarmigan (Lagopus muta helvetica Thienemann) in the Austrian Alps

Small-scale habitat use of black grouse (Tetrao tetrix L.) and rock ptarmigan (Lagopus muta helvetica Thienemann) in the Austrian Alps

Seasonal differences in rainfall, food availability, and the foraging behavior of Tropical Kingbirds in the southern Amazon Basin

Short-term response of ground-dwelling macroarthropods to shelterwood harvests in a productive Southern Appalachian upland hardwood forest

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