Influencia sobre la diversidad de los valores de importancia considerados en el muestreo

  1. Puerto Martín, Ángel
  2. Gómez Gutiérrez, José Manuel
Revue:
Mediterránea: Serie de Estudios Biológicos

ISSN: 1130-6203,  1988-6624

Année de publication: 1985

Número: 8

Pages: 59-72

Type: Article

DOI: 10.14198/MDTRRA1985.8.05 DIALNET GOOGLE SCHOLAR lock_openRUA editor

D'autres publications dans: Mediterránea: Serie de Estudios Biológicos

Résumé

An analysis is made of the variations undergone by diversity on considering six variables of different importance: density, cover, biomass, abundance as a function of density, abundance as a function od cover and frequency. The example proposed includes thirty communities grouped into six types; three of these were typical communities of herbaceous species of the semiarid regions of Western Spain and the other three show different intensities of lignous species. It is concluded that the abundances and frequency are of little interest for the calculation of diversity. Density, cover and biomass form a continuous series which, in the order mentioned, display a greater range of variation between extreme values (positive aspect) and a strong decrease of the influence of richness versus equitability (negative aspect). Owing to this antithesis in quality, cover is chosen as the best parameter or defining diversity.

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