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National Center for Ecological Analysis and Synthesis

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2791-2800 of 6311
  1. Publication

    Synchrony and scaling in dynamics of voles and mice in northern Japan

    One-hundred-and-seventy-six time series of the Japanese wood mouse (Apodemus speciosus) and 185 time series of the grey-sided vole (Clethrionomys rufocanus) spanning 31 years (1962-1992) were studied with respect to synchrony and spatial correlation in population dynamics. The time series were collected at fixed sites as part of the rodent census program of the Japanese Forestry Agency. The survey locations cover a region of 115km by 270km of northern Hokkaido, Japan.

  2. Publication

    Density dependence in voles and mice: A comparative analysis

  3. Publication

    Dynamics of coastal cod populations: Intra- and intercohort density dependence and stochastic processes

    Skagerrak populations of Atlantic cod (Gadus morhua L.) have been surveyed at several fixed stations since 1919. These coastal populations consist of local stocks with a low age of maturity and a short life span. We investigated 60 time-series of 0-group juveniles (i.e. young of the year) sampled annually from 1945 to 1994. An age-structured model was developed which incorporates asymmetrical interactions between the juvenile cohorts (0-group and 1-group; i.e. one-year-old juveniles) and stochastic reproduction.

  4. Publication

    Impact: Assessing the ecological effects of invasive species

  5. Publication

    How and when to protect native species from exotic invaders: Lessons from a predictive model, August 1999

  6. Publication

    Urban ecology and the challenge of integrating social and ecological sciences