The American Midland Naturalist

Articles from Vol. 140, No. 2, October

Bird Community Relationships to Succession in Green Ash (Fraxinus Pennsylvanica) Woodlands
MARK A. RUMBLE AND JOHN E.GOBEILLE1 ABSTRACT.-We studied the relationship between breeding birds and seral stages of green ash (Fraxinus pennsylvanica) woodlands in central South Dakota between 1990 and 1992. Stands of early seral green ash undergoing...
Changes in Aspen Communities over 30 Years in Gunnison County, Colorado
JEREMY L. CRAWFORD, SETH P. McNULTY, JOHN B. SOWELL1 Biology Department, Western State College, Gunnison, Colorado 81231 ABSTRACT.-The canopy and understory vegetation of 19 aspen (Populus tremuloides) stands near Crested Butte, Colorado, were characterized...
Changes in Vegetation Structure and Diversity after Grass-to-Forest Succession in a Southern Appalachian Watershed
ABSTRACT.-To document how species richness and diversity (H') recover from severe large-scale disturbance, we report temporal patterns of species composition and diversity following grass-to-forest succession from a long-term experiment in the Coweeta...
Checklist and "Pollard Walk" Butterfly Survey Methods on Public Lands
ABSTRACT.-Checklist and "Pollard Walk" butterfly survey methods were contemporaneously applied to seven public sites in North Dakota during the summer of 1995. Results were compared for effect of method and site on total number of butterflies and total...
Colonization of Leaf Litter by Littoral Macroinvertebrates with Reference to Successional Changes in Boreal Tree Composition Expected after Riparian Clear-Cutting
ABsTRACT.-Clear-cut logging of boreal riparian forests in northwestern Ontario, Canada shifted the composition of allochthonous leaf litter from largely coniferous to largely deciduous broadleaf. Because of rapid regrowth after tree harvesting, long-term...
Diet of the Endangered Indiana Bat (Myotis Sodalis) on the Northern Edge of Its Range
ABSTRACT.-Dietary preferences of Indiana bats were determined by analyzing 382 fecal pellets collected beneath roost trees in southern Michigan, over parts of 3 yr. Although terrestrial insects (Lepidoptera and Coleoptera) usually dominated the diet...
Dynamic Foraging Behavior in the Southern Flying Squirrel (Glaucomys Volans): Test of a Model
ABSTRACT.-Foraging behavior of the southern flying squirrel was studied under conditions of declining photoperiod and temperature. Experiments tested predictions derived from a theoretical model suggesting hickory ( Carya spp.) nuts as the optimal food...
Effect of Seed Damage on Germination in the Common Vetch (Vicia Sativa L.)
Effect of Seed Damage on Germination in the Common Vetch (Vicia saliva L.) ABSTRACT.-Larvae of the tortricid moths Cydia lunulana and C. nigricana feed inside developing pods of Vicia spp. (Fabaceae: Papilionoideae) in North Yorkshire, England. In the...
Habitat Use by Porcupines (Erethizon Dorsatum) in Central Massachusetts: Effects of Topography and Forest Composition
ABSTRACT.-During 1991-1993 we radio-collared and monitored 50 porcupines (Erethizon dorsatum) on two study sites in central Massachusetts to quantify habitat use. During summer, porcupines were found resting mostly on tree limbs (=>80% of locations)...
Heavy Metal Accumulation by Old-Field Plant Species during Recovery of Sludge-Treated Ecosystems
JOHN D. PELES Institute of Ecology, University of Georgia, Athens 30602 SUSAN R. BREWER Department of Zoology, Miami University, Oxford, Ohio 45056 GARY W. BARRETT1 Institute of Ecology, University of Georgia, Athens 30602 ABSTRACT.-Concentrations of...
Human vs. Lightning Ignition of Presettlement Surface Fires in Coastal Pine Forests of the Upper Great Lakes
ABSTRACT.-To recover direct evidence of surface fires before European settlement, we sectioned fire-scarred logging-era stumps and trees in 39 small, physically isolated sand patches along the Great Lakes coast of northern Michigan and northern Wisconsin....
Impact of Zebra and Quagga Mussels (Dreissena Spp.) on Freshwater Unionids (Bivalvia: Unionidae) in the Detroit River of the Great Lakes
ABSTRACT.-To assess the impact of zebra and quagga mussel (Dreissena spp.) infestation on unionids, unionids (Bivalvia: Unionidae) were sampled in the Detroit River in 1982-1983, before mussels invaded the river, and in 1992 and 1994, after mussels invaded...
Lack of Population Response by Eastern Chipmunks (Tamias Striatus) to Forest Fragmentation
ABSTRACT.-We compared age- and sex-class structure between two populations of eastern chipmunks (Tamias striatus) occupying study plots within uncut (reference) and managed (fragmented) forest sectors in central Pennsylvania from 1992-1995. In addition,...
Larval Performance and Association within and between Two Species of Hackberry Nipple Gall Insects, Pachypsylla Spp. (Homoptera: Psyllidae)
STEPHEN B. HEARD1 AND CORINNE K. BUCHANAN2 Department of Biological Sciences, University of Iowa, Iowa City 52242 ABSTRACT-We studied patterns of association within and between two species of Pachypsylla gall insects (P celtidismamma and P sp. A) on...
Massive Swarm Migrations of Dragonflies (Odonata) in Eastern North America
ROBERT W. RUSSELL1 Museum of Natural Science, 119 Foster Hall, Louisiana State University, Baton Rouge 70803 ABSTRACT.-We describe massive autumn migrations of dragonflies (Odonata) which occurred at Chicago, Illinois (14 September 1978), Cape May, New...
Nitrogen Requirements of the Adult Prairie Vole (Microtus Ochrogaster)
ABSTRACT.-We determined maintenance nitrogen requirements of the adult prairie vole (Microtus ochrogaster) using a nitrogen balance trial approach. Prairie voles required 401 mg kg^sup -0.75^ day^sup -1^ of nitrogen to meet maintenance requirements and...
Patterns of an Invasion by Argentine Ants (Linepithema Humile) in a Riparian Corridor and Its Effects on Ant Diversity
ABSTRACT.-This study documents the distribution of the Argentine ant (Linethema humile), a well known invader of urban and agricultural ecosystems, in a riparian corridor near San Luis Obispo, California. Sampling of the ant community was done using...
Population Dynmanics of Alabama Beach Mice (Peromyscus Polionotus Ammobates) Following Hurricane Opal
WILLIAM R. SWILLING, JR-l, MICHAEL C. WOOTENt, NICHOLAS R. HOLLER"'2 AND WILLIAM J. LYNN' ABSTRACT.-On 4 October 1995, Hurricane Opal made landfall to the E of one of our long-term study sites at Bon Secour National Wildlife Refuge in Baldwin County,...
The "Foliage Is the Fruit" Hypothesis: Complex Adaptations in Buffalograss (Buchloe Dactyloides)
ABSTRACT.-Buffalograss (Buchloe dactyloides) has been described as an excellent fit for Janzen's "Foliage is the Fruit" (FF) hypothesis, which suggests that large grazing animals ingest and later disperse seeds of some herbs when consuming their foliage....
The Foraging Ecology of the Gray Rat Snake (Elaphe Obsoleta Spiloides)-Visual Stimuli Facilitate Location of Arboreal Prey
ABSTRACT.-We examined the responsiveness of adult gray rat snakes to avian prey in enclosures that simulated natural habitat conditions. Subjects searched for arboreal nest contents in the presence or absence of a bird model flown so as to simulate avian...
Tree Growth Responses of Populus Deltoides and Juglans Nigra to Streamflow and Climate in a Bottomland Hardwood Forest in Central Ohio
DOREEN M. DUDEK1,2, JAMES R. McCLENAHEN3 AND WILLIAM J. MITSCH1,4 ABSTRACT.-Radial growth (indices of tree-ring widths) of Eastern cottonwood (Populus deltoides Marsh.), a flood-tolerant species, and black walnut (Juglans nigra L)., a flood-intolerant...