02049nas a2200133   4500008004100000245006700041210006700108300001100175490000700186520159500193100001901788700001601807856009201823       1989                        eng d00aInfluence of habitat on acorn selection by Peromyscus leucopus0 aInfluence of habitat on acorn selection by Peromyscus leucopus  a35 -430 v703 a<p>Acorn selection by white-footed mice (Peromyscus leucopus) was tested with mice from four different habitats and acorns from six species of oaks (Quercus). Three mice captured in white-oak (subgenus Lepidobalanus) forests in northwestern Arkansas selected acorns from the white-oak group (post [Q. stellata] and white [Q. alba] oaks) over those from the red-oak (subgenus Erthrobalanus) group (pin [Q. palustris], willow [Q. phellos], and black [Q. velutine] oaks). These mice were able to subsist for more than two months on a diet of only acorns, provided that acorns from post oaks were available. These mice developed signs of tannin poisoning when maintained on acorns only from the red-oak group. Eleven mice captured in white-oak forests in eastern Kansas also consumed more acorns from the white-oak (post, bur [Q. macrocarpa], and chinquapin [Q. muehlengergii] oaks) than from the red-oak group (black, norther red [Q. rubra], and pin oaks). However, seven mice captured in red-oak group forest in eastern Kansas consumed more acorns from the red-oak group than from the white-oak group and showed no signs of tannin poisoning. Five mice captured in habitats without oaks consumed equal amounts of acorns from the two subgenera. These results suggest that exposure to acorns may determine acorn selection by P. leucopus independent of fat, protein, or tannin content of the acorns. Acorn selection may be labile, as seven mice captured in white-oak forests in eastern Kansas consumed equal amounts of bur and black oak acorns after being given only red-oak acorns for 9 days</p>1 aBriggs, J., M.1 aSmith, K.G.  uhttp://lter.konza.ksu.edu/content/influence-habitat-acorn-selection-peromyscus-leucopus01554nas a2200145   4500008004100000245009800041210006900139300001300208490000700221520102100228653000901249653001501258100001601273856011901289       1986                        eng d00aWinter population dynamics of three species of mast-eating birds in the eastern United States0 aWinter population dynamics of three species of masteating birds   a407 -4180 v983 a<p>All three species store and consume mast. Red-headed Woodpecker populations were most variable and Blue Jay populations were more variable than those of Black-capped Chickadees. Year-to- year comparisons show that Red-headed Woodpeckers are relatively nomadic in winter; that Blue Jays make movements between New England and the Mid-Atlantic coast with some regularity; and that Black-capped Chickadees may make relatively short population movements between central and southern New England. Movements of the 3 species were independent of mean January temperatures at the count areas examined. Results presented here are consistent with the hypothesis that increased dependence on mast as a winter food source is correlated with increased variability in winter population dynamics. In particular, the nearly periodic nature of the east-west shift of Red-headed Woodpecker high counts among years is strikingly similar to the periodic pattern of boreal seed-eating birds discovered by Bok asnd Lepthien (1976a)</p>10abird10apopulation1 aSmith, K.G.  uhttp://lter.konza.ksu.edu/content/winter-population-dynamics-three-species-mast-eating-birds-eastern-united-states