Eastern wild turkey nest site selection in two frequently burned pine savannas  

作　　者：Andrew R.Little Nathan P.Nibbelink Michael J.Chamberlain LMike Conner Robert J.Warren 

机构地区：[1]Warnell School of Forestry and Natural Resources,University of Georgia,180 E.Green St.,Athens,GA 30602,USA [2]Joseph W.Jones Ecological Research Center at Ichauway,Newton,Georgia 39870,USA

出　　处：《Ecological Processes》2016年第1期38-47,共10页生态过程（英文）

基　　金：funding provided by the Georgia Wildlife Resources Division through the Wildlife Restoration Program(Grant No.W75)。

摘　　要：Introduction:Reproductive success is a critical factor affecting avian demographics and can be influenced by many factors including nesting chronology,predation risk,and fine-scale nest site selection.Methods:We modeled the relative influences of habitat-related covariates at six spatial scales(nest site:15-,40-,80-,120-,160-,and 200-m radii)on Eastern wild turkey(Meleagris gallopavo silvestris)nest site selection in two pine savannas managed by frequent prescribed fire(≤3 years)in southwestern Georgia during 2011-2013.Results:Nest site(15-m scale)habitat metrics(mean visual obstruction[cm]and canopy closure[%])had the greatest influence on nest site selection relative to covariates measured at larger spatial scales.Scaled odds ratios suggested that nests were 26.8% more likely to occur for every 10 cm increase in mean vegetation height with a range of 7.5 to 150.0 cm and 18.5% less likely to occur for every 10% increase in canopy closure with a range from 0.0 to 97.8%.Total ground cover,canopy closure,edge density,and percent land cover type(e.g.,mature pine,mixed pine/hardwood,shrub/scrub)had minimal influence on nest site selection.Conclusions:Management of pine savannas for turkey nest sites should focus on creating early-successional vegetation to conceal nests from potential predators.Additionally,we suggest that future studies consider evaluating the influence of spatial scale on turkey nest site selection.

关 键 词：Georgia Land cover Meleagris gallopavo silvestris MULTI-SCALE Nest site selection Pinus palustris RADIO-TELEMETRY 

分 类 号：H32[语言文字—法语]