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- Wiens, John A.; Parker, Keith R.
- Ecological applications 1995 v.5 no.4 pp. 1069-1083
- accidents; biological resources; covariance; environmental impact; temporal variation; time series analysis
- ... Because studies of environmental accidents must be initiated after the fact and because the accidents cannot (or should not) be replicated, sampling cannot be entirely randomized, and investigations involve some degree of confounding and pseudoreplication. The study designs that can be used carry methodological limitations and ecological assumptions, which must be considered in evaluating results. ...
- Boot, Rene G. A.; Gullison, R. E.
- Ecological applications 1995 v.5 no.4 pp. 896-903
- Brazil nuts; Meliaceae; demographic statistics; design for environment; economic analysis; ecosystems; environmental impact; mechanistic models; nontimber forest products; trees; tropical forests
- ... There are few if any examples of the demonstrably sustainable extraction of either timber or non—timber forest products. Even well—known products such as brazil nuts and mahogany lack a sufficient knowledge base to design a sustainable extraction system. Potential extraction systems for timber and non—timber forest products from tropical forests should be evaluated both in terms of their sustainab ...