Search Results - "Brassil, Chad E."

Pocket gopher disturbance slows soil carbon accumulation in abandoned agricultural lands by Yang, Yi, Knops, Johannes, Brassil, Chad

“…Soil carbon (C) sequestration rates vary widely in abandoned agricultural lands, and factors determining this variation, beyond climate, soil type, and…”
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Multiple-true-false questions reveal more thoroughly the complexity of student thinking than multiple-choice questions: a Bayesian item response model comparison by Brassil, Chad E., Couch, Brian A.

“…Background Within undergraduate science courses, instructors often assess student thinking using closed-ended question formats, such as multiple-choice (MC)…”
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Environmental Effects on the Expression of Life Span and Aging: An Extreme Contrast between Wild and Captive Cohorts of Telostylinus angusticollis (Diptera: Neriidae) by Kawasaki, Noriyoshi, Brassil, Chad E., Brooks, Robert C., Bonduriansky, Russell

“…Most research on life span and aging has been based on captive populations of short-lived animals; however, we know very little about the expression of these…”
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Composite random search strategies based on non-directional sensory cues by Nolting, Ben C., Hinkelman, Travis M., Brassil, Chad E., Tenhumberg, Brigitte

“…•We model foragers that switch between intensive and extensive search modes.•Optimal movement strategies and switching criteria depend on resource…”
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Parasite-mediated disruptive selection in a natural Daphnia population by Duffy, Meghan A, Brassil, Chad E, Hall, Spencer R, Tessier, Alan J, Cáceres, Carla E, Conner, Jeffrey K

“…A mismatch has emerged between models and data of host-parasite evolution. Theory readily predicts that parasites can promote host diversity through mechanisms…”
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Can Environmental Variation Generate Positive Indirect Effects in a Model of Shared Predation? by Brassil, Chad E.

“…Classic models of apparent competition predict negative indirect effects between prey with a shared enemy. If predator per capita growth rates are nonlinear,…”
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Increased productivity in wet years drives a decline in ecosystem stability with nitrogen additions in arid grasslands by Wang, Junfeng, Knops, Johannes M. H., Brassil, Chad E., Mu, Chunsheng

“…Adding nutrients to nutrient-limited ecosystems typically lowers plant diversity and decreases species asynchrony. Both, in turn, decrease the stability of…”
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Multiple–True–False Questions Reveal the Limits of the Multiple–Choice Format for Detecting Students with Incomplete Understandings by COUCH, BRIAN A., HUBBARD, JOANNA K., BRASSIL, CHAD E.

“…By having students select one answer among several plausible options, multiple–choice (MC) questions capture a student’s preferred answer but provide little…”
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Functional traits' annual variation exceeds nitrogen‐driven variation in grassland plant species by Wheeler, George R., Brassil, Chad E., Knops, Johannes M. H.

“…Effective application of functional trait approaches to ecological questions requires understanding the patterns of trait variation within species as well as…”
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Rapid Senescence in Pacific Salmon by Morbey, Yolanda E., Brassil, Chad E., Hendry, Andrew P.

“…Any useful evolutionary theory of senescence must be able to explain variation within and among natural populations and species. This requires a careful…”
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Propagule pressure-invasibility relationships: testing the influence of soil fertility and disturbance with Lespedeza cuneata by Houseman, Gregory R, Foster, Bryan L, Brassil, Chad E

“…Although invasion risk is expected to increase with propagule pressure (PP), it is unclear whether PP-invasibility relationships follow an asymptotic or some…”
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Individual phenotypic variation reduces interaction strengths in a consumer–resource system by Gibert, Jean P., Brassil, Chad E.

“…Summary Natural populations often show variation in traits that can affect the strength of interspecific interactions. Interaction strengths in turn influence…”
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Dynamic versus Instantaneous Models of Diet Choice by Ma, Brian O., Abrams, Peter A., Brassil, Chad E.

“…We investigate the dynamics of a series of two‐prey‐one‐predator models in which the predator exhibits adaptive diet choice based on the different energy…”
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Dynamics and responses to mortality rates of competing predators undergoing predator–prey cycles by Abrams, Peter A, Brassil, Chad E, Holt, Robert D

“…Two or more competing predators can coexist using a single homogeneous prey species if the system containing all three undergoes internally generated…”
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When can a single-species, density-dependent model capture the dynamics of a consumer-resource system? by Reynolds, Sara A., Brassil, Chad E.

“…Single-species population models often include density-dependence phenomenologically in order to approximate higher order mechanisms. Here we consider the…”
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Rapid and costly ageing in wild male flies by BONDURIANSKY, Russell, BRASSIL, Chad E

“…Ageing (senescence) has never been demonstrated convincingly in any insect in the wild, where mean lifespans are probably much shorter than in the laboratory,…”
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Sex effects on life span and senescence in the wild when dates of birth and death are unknown by Zajitschek, Felix, Brassil, Chad E., Bonduriansky, Russell, Brooks, Robert C.

“…Males and females allocate and schedule reproductive effort in very different ways. Because the timing and amount of reproductive effort influence survival and…”
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Functional group dominance and not productivity drives species richness by Li, Wenjin, Knops, Johannes M. H., Brassil, Chad E., Lu, Junfeng, Qi, Wei, Li, Jinhua, Liu, Minxia, Chang, Shenghua, Li, Wenlong

“…Background: There is a lack of consensus about the productivity-richness relationship, with several recent studies suggesting that it is not productivity but…”
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Mean time to extinction of a metapopulation with an Allee effect by Brassil, Chad E.

“…The incorporation of Allee effects into a simple metapopulation extinction model reveals a large non-linear reduction in mean time to extinction with small…”
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Temporal variation and the evolution of a parasitoid foraging cue by Brassil, Chad E.

“…This work details theory in which selection favors generalists in a more variable environment. Specifically, in a two-host-one-parasitoid model, temporal…”
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