The American Midland Naturalist

Articles from Vol. 158, No. 1, July

Aldo Leopold's Odyssey
Aldo Leopold's Odyssey, Newton, Julia, L., Island Press, 2006, Washington, Covelo London ISBN 1-59726-045-2I discovered A Sand County Almanac as an undergraduate trying to select a major. Aldo Leopold's elegant prose and vivid imagery captivated me....
Assessing Causes of Change in the Freshwater Mussels (Bivalvia: Unionidae) in the Black River, Ohio
ABSTRACT. -Habitat destruction is believed to be the number one cause of the decline in unionid mussels. Around the world, cities, towns and agriculture alter the structure of watersheds, and the Black River in Ohio may be a typical example. We investigated...
Changes in a Northwestern Florida Gulf Coast Herpetofaunal Community over a 28-Y Period
ABSTRACT.-Population declines of amphibians and reptiles throughout the world have led to the initiation of projects to monitor their status and trends. Historical collections give an indication of which species occurred in an area at one time, although...
Conservation Genetic Assessment of the Blue-Spotted Salamander in Iowa
Abstract.-Blue-spotted salamanders (Ambystoma laterale) are a widespread and relatively common species throughout northeastern North America. The distribution of this species is marked by a pair of peripherally isolated populations at the southwestern...
Coyote Flight Movements Relative to Territory Boundaries: An Experiment in the Field
Abstract. -It is well-known that coyotes maintain exclusive territories in which they are least vulnerable to mortality from humans. Studies also indicate that resident (i.e., nondispersing) coyotes rarely leave these secure areas when unperturbed. Here,...
Detection Rates of Eastern Spotted Skunks (Spilogale Putorius) in Missouri and Arkansas Using Live-Capture and Non-Invasive Techniques
ABSTRACT.-The eastern spotted skunk (Spilogale putorius) is a rare species of conservation concern throughout much of its range, but effective management is hampered by a lack of information on appropriate survey strategies. We validated three commonly...
Dietary Overlap of Swift Foxes and Coyotes in Northwestern Texas
Abstract.-Predation by coyotes (Canis latrans) has been documented as the main cause of mortality in most populations of swift foxes (Vulpes velox), although reasons for such high predation rates were often unclear. Additionally, coyotes kill but generally...
Direct and Indirect Effects of Channel Catfish (Ictalurus Punctatus) on Native Crayfishes (Cambaridae) in Experimental Tanks
Abstract. -For the incised, sand-bed streams of north-central Mississippi, USA, fish predation is one plausible mechanism to explain both relatively low crayfish densities and differences in stream size occupied by various native crayfishes. I conducted...
Effects of Landscape Composition and Structure on Core Use Areas of Raccoons (Procyon Lotor) in a Prairie Landscape
ABSTRACT.-Raccoons are habitat generalists, existing in a variety of landscapes. Although known to inhabit prairie landscapes, few studies have examined habitat selection of raccoons within these environs and relationships between landscape structure...
Effects of Method of English Ivy Removal and Seed Addition on Regeneration of Vegetation in a Southeastern Piedmont Forest
Abstract.-Invasive plants can have substantial negative impacts on native flora and fauna. As a result, ecological restoration often involves removal of invasive species. We examined the effects of the removal of Hedera helix (English ivy) on regeneration...
Elimia Comalensis (Gastropoda: Pleuroceridae) from the Edwards Plateau, Texas: Multiple Unrecognized Endemics or Native Exotic?
ABSTRACT.-This research explored the distribution, morphological variation, and molecular systematics of Elimia comalensis (Gastropoda: Pleuroceridae) using geometric morphometrics (n = 565) and mitochondrial DNA sequences (n = 15). Elimia comalensis...
Experimental Lead Pellet Ingestion in Mourning Doves (Zenaida Macroura)
Abstract. -Because the relationship between lead pellet availability and ingestion by mourning doves (Zenaida macroura) remains uncertain, we conducted an experiment to determine if doves held in captivity freely ingest lead shotgun pellets, investigate...
Female Olympic Marmots (Marmota Olympus) Reproduce in Consecutive Years
ABSTRACT.-Olympic marmots (Marmota olympus) are reported to skip at least one year between reproductive efforts. We observed several female marmots weaning infants in consecutive years. There was no evidence that reproductive skipping was more common...
Habitat Selection by Native Turtles in a Lake Erie Wetland, USA
Abstract.-We examined habitat selection by the painted turtle (Chrysemys picta marginata) and common map turtle (Graptemys geographica) in the Ottawa National Wildlife Refuge, Ohio, USA. Basking traps caught 198 (162 C. picta and 36 G. geographica) and...
Northerly Range Extensions of Mammalian Species in Minnesota
ABSTRACT. -An inventory and monitoring program for species of non-volant small mammals was undertaken in Voyageurs National Park on the Minnesota-Canadian border. Other observations of mammals were made in and around the Park (1967-2004). Here we report...
Reproductive Allometry in the Common Map Turtle, Graptemys Geographica
Abstract.-According to optimal offspring size theory, natural selection pressures balance the egg size/clutch size trade-off at a point where increases in maternal body size result in increases in clutch size but not increases in egg size. However, many...
Roost Characteristics of Hoary Bats in Arkansas
Abstract. -We radiotracked nine hoary bats (Lasiurus cinereus) and characterized 12 roosts during late spring and early summer in the Ouachita Mountains of central Arkansas. Hoary bats generally roosted on the easterly sides of tree canopies in the foliage...
Seed Banks in Diked and Undiked Great Lakes Coastal Wetlands
Abstract.-Many Great Lakes coastal wetlands have been impounded (diked) to provide protection from flooding and to manipulate water levels for vegetation management. Dikes change the hydrological regime by isolating the coastal wetland from natural lake...
Shoaling Behavior in the Central Mudminnow (Umbra Limi)
ABSTRACT.-The central mudminnow (Umbra limi Kirtland, 1841) is a small freshwater fish that inhabits slow-moving waters in central North America. In this study, we investigate shoaling behavior in the central mudminnow. In Experiment 1, a focal mudminnow...
Spatial and Temporal Variation in the Diet of Coyotes in the Chicago Metropolitan Area
ABSTRACT.-Coyotes (Canis latrans) are an opportunistic predator that have adapted to many human-modified environments. Conflicts between coyotes and humans are an increasing concern for managers in urban areas. We examined the spatial and temporal utilization...
Spawning Chronology, Nest Site Selection and Nest Success of Smallmouth Bass during Benign Streamflow Conditions
ABSTRACT.-We documented the nesting chronology, nest site selection and nest success of smallmouth bass Micropterus dolomieu in an upstream (4th order) and downstream (5th order) reach of Baron Fork Creek, Oklahoma. Males started nesting in mid-Apr....
The Effect of Group Size on the Responses of Wood Frog Tadpoles to Fish
ABSTRACT. -In many species of anurans, tadpoles adjust their behavior in the presence of fish or fish cues, in many cases reducing their activity. Tadpoles may also adjust their activity or behavior in response to group size. We examined the effects...