We demonstrate that disturbance does not diminish the importance of competition. Interspecific competition significantly increased rates of species extinction over a broad disturbance gradient, and increasing disturbance intensities increased, rather than decreased, the tempo of competitive exclusio... | PMID: 20616069

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The molecular basis of many physiological and/or phenotypic adaptations of alpine plants remains largely unknown. The upper leaves of what are termed "glasshouse plants" have been transformed into translucent bracts that cover their inflorescences. This change in appearance is believed to allow such... | PMID: 20221628

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Thirty years of suicide rates for Guam were analyzed by age, sex, period, and cohort. Youth suicide increased rapidly in the 1990s; certain cohorts have higher rates. Four explanatory factors are discussed, including ecological factors and migration from the Federated States of Micronesia. Direct an... | PMID: 20170257

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I comment on (a) Heft's admirable, albeit selective, historiography; (b) his ecological psychology-past and present-as it relates to Skinner's science and system (e.g., affordances, molar behavior); (c) his misunderstandings of Skinner's behaviorism (e.g., reductionistic, mechanistic, molecular); an... | PMID: 20354604

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Recent technological, geophysical, and societal forces have fundamentally altered the structure and functioning of human environments. Prominent among these forces are the rise of the Internet; rapid rates of global environmental change; and widening rifts among different socioeconomic, racial, reli... | PMID: 19348519

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PMID: 19087926

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PMID: 19087927

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PMID: 19341088

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Recommendations included the need to (1) conduct a broader examination of potential policy, program, and practice strategies across social ecological levels, (2) use team approaches to science that include multiple disciplines and perspectives, (3) expand the methods and metrics used to demonstrate... | PMID: 19052828

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Genetic variability in 10 natural Tunisian populations of Medicago laciniata were analysed using 19 quantitative traits and 12 polymorphic microsatellite loci. A large degree of genetic variability within-populations and among-populations was detected for both quantitative characters and molecular m... | PMID: 19147909

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The spores of ectomycorrhizal fungi (EMF) play critical roles in the population and community development of EMF. Here, the germination and infectivity of EMF spores are examined with reference to the ecological traits of the EMF species. Spores were collected from 12 EMF species, whose successional... | PMID: 18657211

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We predict a broad potential distributional area of plague occurrences across sub-Saharan Africa. General tests of model's transferability suggest that our model can anticipate the potential distribution of plague occurrences in Madagascar and northern Africa. However, generality and predictive abil... | PMID: 18947399

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PMID: 19678425

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