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National Center for Ecological Analysis and Synthesis

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3691-3700 of 6248
  1. Publication

    Marine reserves and management of the northern California red sea urchin fishery

    Catch in the northern California red sea urchin fishery has declined from 14,000 metric tons in 1988 to less than 1,000 in recent years. Although the institution of marine reserves is not expected to restore catch to former levels, reserves at least have the potential to prevent further decline. The answer to the question of whether reserves would benefit this fishery depends on an essential uncertainty in recruitment, which we model as a parameter in a Beverton-Holt relationship between number of larvae produced and successfully settling juveniles.

  2. Publication

    Conundrums in mixed woody-herbaceous plant systems

  3. Publication

    The (super)tree of life: Procedures, problems, and prospects

    Supertree construction is a new, rigorous approach for combining phylogenetic information to produce more inclusive phylogenies. It has been used to provide some of the largest, most complete phylogenies for diverse groups (e.g., mammals, flowering plants, and dinosaurs) at a variety of taxonomic levels. We critically review methods for assembling supertrees, discuss some of their more interesting mathematical properties, and describe the strengths and limitations of the supertree approach.

  4. Publication

    Global and regional ecosystem modeling: Databases of model drivers and validation measurements