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  • Date: 05/24/1974
    Resource Category: Peer-reviewed article
    Biological sampling procedures that remove organisms or litter from the system being studied potentially bias the results. Bias can be estimated by considering the experimenter as a consumer in the system, and comparing experimenter consumption to other organisms feeding at the same trophic level. H. T. Odum's classic work is examined in light of ... »
  • Date: 05/24/1973
    Resource Category: Peer-reviewed article
    Describes an outdoor educational program at the University of California Botanical Garden in which children are encouraged to handle the plants and are provided with a taped commentary. By the use of an inquiry method, children learn how the Californian Indians used many of the native plants. ... »