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Article
The cues have it; nest-based, cue-mediated recruitment to carbohydrate resources in a swarm-founding social wasp
This study explores whether or not foragers of the Neotropical swarm-founding wasp Polybia occidentalis use nest-based recruitment to direct colony mates to carbohydrate resources. Recruitment allows social insec...
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Article
Environmental factors influencing the seasonality of estrus in chimpanzees
Although the energetics of the estrous cycle in primates is not well understood, evidence suggests that energy and nutrient acquisition influence ovulation and the timing of conception. Energy for estrus has t...
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Article
Spatial Controls of Pre–Euro-American Wind and Fire Disturbance in Northern Wisconsin (USA) Forest Landscapes
We elucidate spatial controls of wind and fire disturbance across northern Wisconsin (USA), where climatic and topographic gradients are not strong, using data from the original US Public Land Survey (PLS) not...
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Article
Foliar quality influences tree-herbivore-parasitoid interactions: effects of elevated CO2, O3, and plant genotype
This study examined the effects of carbon dioxide (CO2)-, ozone (O3)-, and genotype-mediated changes in quaking aspen (Populus tremuloides) chemistry on performance of the forest tent caterpillar (Malacosoma diss...
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Article
Founding Swarms in a Tropical Social Wasp: Adult Mortality, Emigration Distance, and Swarm Size
When colonies of swarm-founding wasps lose their nests to predation or accident, the entire adult population escapes, emigrates as an absconding swarm, and renests elsewhere. Such an event causes a reduction i...
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Article
How many choices can your test animal compare effectively? Evaluating a critical assumption of behavioral preference tests
Behavioral choice tests comprise one of the most commonly used experimental designs in ecology. However a critical assumption of these assays, that the outcome is independent of the number of choices, has not...
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Article
Environmental controls on ground cover species composition and productivity in a boreal black spruce forest
Boreal black spruce forests typically have a dense ground cover of bryophytes. The two main bryophyte groups in boreal black spruce forests, feathermoss and Sphagnum, have ecophysiological characteristics that in...
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Article
Genotypic variation in response of quaking aspen (Populus tremuloides) to atmospheric CO2 enrichment
Enriched atmospheric CO2 alters the quantity and quality of plant production, but how such effects vary among plant genotypes is poorly known. We evaluated the independent and interactive effects of CO2 and nutri...
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Article
Number of lethal equivalents in human populations: how good are the previous estimates?
Lee et al. (1996) recently developed a method for interval estimation of the number of lethal equivalents by using a hierarchical structure of likelihood functions. This hierarchical model consists of two multino...
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Article
Microbial community analysis in incompletely or destructively sampled systems
Analyses of microbial community dynamics are often constrained by the destructive, indirect, and incomplete nature of most sampling techniques. These methodological constraints compel assumptions that are rare...
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Article
Charring rate of wood for ASTM E 119 exposure
Analytical methods that predict the endurance of structural wood members in a fire are based on the reduction of the cross section of the member caused by wood being charred. To define the charring rate in ter...
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Article
Microbial introductions to apple leaves: Influences of altered immigration on fungal community dynamics
Fungal immigration to apple leaves in the field was altered by the introduction of populations ofChaetomium globosum orAureobasidium pullulans to surface-disinfested leaves either immediately following, or 6 days...
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Article
Fungal immigration dynamics and community development on apple leaves
Fungal immigration dynamics and community development were followed over time on sets of surface-disinfested apple leaves in the field. Immigration was defined as the arrival of viable propagules on the leaf s...
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Chapter and Conference Paper
Leslie Matrix Models for Insect Populations With Overlap** Generations
Leslie matrix models appear a useful tool for studying population dynamics for insects with overlap** generations. Our studies have focused on aphids. Analysis using deterministic Leslie matrices has demonst...
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Article
Fungi, leaves, and the theory of island biogeography
Species dynamics of fungi (filamentous fungi and yeasts) on apple leaves were studied within the framework of the theory of island biogeography by following “immigration” and “extinction” patterns on individua...
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Article
Aldicarb immunomodulation in mice: An inverse dose-response to parts per billion levels in drinking water
The effects of aldicarb (a carbamate insecticide and nematocide) on selected immune and non-immune parameters of mice were examined. The primary objective was to determine whether exposure to low levels of ald...
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Article
Age-specific survivorship analysis ofHeliothis spp. Populations on cotton
Population dynamics ofHeliothis virescens (F.) andHeliothis zea (Boddie) (Lepidoptera: Noctuidae) eggs and larvae were studied for two years in a small plot of cotton,Gossypium hirsutum (L.). Due to morphological...
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Article
Positional variation in phylloplane microbial populations within an apple tree canopy
Variation in density of epiphytic yeasts, filamentous fungi, and bacteria on apple leaves collected from eight trees at nine dates for two seasons was determined with respect to three positional factors: heigh...
