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  1. No Access

    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...

    John H. Andrews, Charles M. Kenerley, Erik V. Nordheim in Microbial Ecology (1980)

  2. No Access

    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...

    David B. Hogg, Erik V. Nordheim in Researches on Population Ecology (1983)

  3. No Access

    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...

    John H. Andrews, Linda L. Kinkel, Flora M. Berbee, Erik V. Nordheim in Microbial Ecology (1987)

  4. No Access

    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...

    Linda L. Kinkel, John H. Andrews, Erik V. Nordheim in Microbial Ecology (1989)

  5. No Access

    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...

    Linda L. Kinkel, John H. Andrews, Erik V. Nordheim in Microbial Ecology (1989)

  6. No Access

    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...

    Linda L. Kinkel, Erik V. Nordheim, John H. Andrews in Microbial Ecology (1992)

  7. 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...

    Jae Kyun Lee, Martin Lascoux, Erik V Nordheim in Heredity (1996)

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  8. No Access

    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...

    Richard L. Lindroth, Sherry Roth, Erik V. Nordheim in Oecologia (2001)

  9. No Access

    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...

    Kari E. Bisbee, Stith T. Gower, John M. Norman, Erik V. Nordheim in Oecologia (2001)

  10. No Access

    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...

    Kenneth F. Raffa, Nathan P. Havill, Erik V. Nordheim in Oecologia (2002)

  11. No Access

    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...

    M. Kim Holton, Richard L. Lindroth, Erik V. Nordheim in Oecologia (2003)

  12. No Access

    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...

    Lisa A. Schulte, David J. Mladenoff, Sean N. Burrows, Theodore A. Sickley… in Ecosystems (2005)

  13. No Access

    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...

    Teresa I. Schueller, Erik V. Nordheim, Benjamin J. Taylor… in Naturwissenschaften (2010)