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The American Midland Naturalist
Articles from Vol. 152, No. 1, July
An Ethological Analysis of the Breeding Behavior of the Fantail Darter, Etheostoma Flabellare
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ABSTRACT.-We observed the behaviors in six fantail darter spawning events and produced a model describing the probability of any sequence of behaviors between an egg's deposition and its fertilization. Of the 12 different behaviors we observed, "quiver"...
Avian Use of Successional Cottonwood (Populus Deltoides) Woodlands along the Middle Missouri River
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ABSTRACT.-Cottonwood (Populus deltoides) woodlands are important habitats for birds. Yet, little is known of the relations between bird habitat and succession in these woodlands. We studied the bird community in cottonwood woodlands from early to late...
Diel Activity Patterns of the Turtle Assemblage of a Northern Indiana Lake
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ABSTRACT.-We investigated the daily activity patterns of seven species of turtles in a northern Indiana lake over 10 y using the numbers of captures in fyke nets as an index of activity. Chrysemys picta and Graptemys geographica were active throughout...
Does Breeding System Contribute to Rarity of Goldenseal (Hydrastis Canadensis)?
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ABSTRACT.-Goldenseal (Hydrastis canadensis L.) is an herbaceous perennial species that is becoming more rare within its range. Hydrastis canadensis populations are highly isolated and pollen flow between these populations may be restricted. I examined...
Does Predation or Moisture Explain Distance to Edge Distribution of Soil Arthropods?
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ABSTRACT.-Ecological trap theory suggests that greater predator activity occurs along edge habitat, thereby reducing prey abundance. Alternatively, environmental gradients associated with edge habitat may be responsible for changes in prey abundance...
Fire Regimes and Resultant Forest Structure in the Native Año Nuevo Monterey Pine (Pinus Radiata) Forest, California
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ABSTRACT.-Native Monterey pine (Pinus radiata) forests occur in five populations on the west coast of North America. High severity fire has been reported to be the main disturbance agent that initiates seedling establishment for this species. To investigate...
Impact of Intraspecific Polyploidy in Andropogon Gerardii (Poaceae) Populations
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ABSTRACT.-Andropogon gerardii populations are comprised of two (or more) polyploid forms over much of the range of the species. To understand the impact of intraspecific polyploidy, polyploid cytotypes were compared over 4 y in native grasslands in Boulder,...
Indications of Deep Soil Water Usage by Limber Pine (Pinus Flexilis) and Skunkbush Sumac (Rhus Aromatica) in Northeastern Colorado: An Oxygen Isotope Study
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ABSTRACT.-We examined whether limber pine and skunkbush sumac individuals co-existing on the Pawnee Buttes of northeastern Colorado have the ability to access and utilize deep soil water resources. The [delta]^sup 18^O signature of source water to the...
Intra-Annual and Interannual Fidelity to Summer Roost Areas by Female Eastern Pipistrelles, Pipistrellus Subflavus
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ABSTRACT.-Bats in forests have strict roosting habitat requirements. The current paradigm in bat conservation has been to identify the specific characteristics of individual roost trees that arc selected by bats. Although this strategy is both practical...
Macrofungi Collected from the Black Hills of South Dakota and Bear Lodge Mountains of Wyoming
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ABSTRACT.-The objective of the study was to collect, identify and document the presence of macrofungi occurring in the Black Hills of South Dakota and Bear Lodge Mountains of Wyoming. Two-hundred sixty species of macrofungi were collected from 95 sites...
Mound Microclimate, Nutrients and Seedling Survival
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ABSTRACT.-Mounds formed by pocket gophers (Geomys pinetis) in a longleaf pine-wiregrass savanna had larger daily soil temperature fluctuations than surrounding matrix locations. Microsite temperature differences persisted for more than a year, but were...
Nesting, Nest Predation and Hatchling Emergence of the Carolina Diamondback Terrapin, Malaclemys Terrapin Centrata, in Northeastern Florida
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ABSTRACT.-In 1997 and 2000 we monitored nesting by diamondback terrapins daily from 1 May through 31 October at a beach on an island in northeastern Florida. During our visits we recorded and marked newly oviposited intact nests, monitored previously...
Red Imported Fire Ant Impacts on Wildlife: A Decade of Research
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ABSTRACT.-The negative impacts of biological invasion are economically and ecologically significant and, while incompletely quantified, they are clearly substantial. Ants (family Formicidae) are an important, although often overlooked, component of many...
Secondary Invasion Following the Reduction of Coronilla Varia (Crownvetch) in Sand Prairie
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ABSTRACT.-I investigated the effect of Coronilla varia invasion and subsequent reduction on the plant community and soil nitrogen availability in a degraded Illinois sand prairie. The presence of C. varia significantly increased soil nitrogen availability...
Soil Properties and Soil Nitrogen Dynamics of Prairie-Like Forest Openings and Surrounding Forests in Kentucky's Knobs Region
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ABSTRACT.-Herbaceous communities located within forest openings increase plant species diversity of forests in the Knobs Region of Kentucky. Although these grass-dominated communities are protected and managed for rare plant species conservation, it...
Status of Fishes in New York: Increases, Declines and Homogenization of Watersheds
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ABSTRACT.-Fishes present in 19 watersheds in New York are inventoried. One hundred seventy-six taxa (171 species) reside in these watersheds. Eighteen taxa are extra-limital exotic fishes, that is, they are not native to any New York watershed. The remaining...
Using Morphologic Characters to Identify Peromyscus in Sympatry
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ABSTRACT.-To assess the usefulness of morphologic characters in identifying deer mice (Peromyscus maniculatus), white-footed mice (P. leucopus) and cotton mice (P. gossypinus) in sympatry, cranial and external measurements were recorded for two groups...
