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Two-way indicator species analysis (TWINSPAN) is a Fortran-based statistical analysis method described in 1979 by Mark O. Hill. It is widely used in ecological research.
As of 1997, it was the only widespread standardized method to identify indicator plants.
References
- ^ Dufrene, Marc; Legendre, Pierre (August 1997). "Species Assemblages and Indicator Species: The Need for a Flexible Asymmetrical Approach". Ecological Monographs. 67 (3): 345. doi:10.2307/2963459. hdl:2268/145383. JSTOR 2963459.
- Vermeerscha, Sophie; de Genstc, William; Vermoesend, Frank; Triestb, Ludwig (2003). "The influence of transformations of an ordinal scale of a floristic gradient, applied on a TWINSPAN classification". Flora - Morphology, Distribution, Functional Ecology of Plants. 198 (5): 389–403. doi:10.1078/0367-2530-00111.
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