Commonness and rarity: theory and application of a new model to Mediterranean montane grasslands
Autores
Rey Benayas, José María; Scheiner, Samuel M.; García Sánchez-Colomer, Manuel; Levassor, CatherineEditor
The Resilience Alliance
Fecha de publicación
1999Patrocinadores
Funding was provided by the projects "Humedales en áreas de descarga de acuíferos en territorios graníticos (Sierra de Guadarrama)" (Comunidad Autónoma de Madrid nº C129/91), and "Determinantes de la diversidad biológica en ecosistemas mediterraneós. Papel de los procesos locales y regionales" (DGICYT). Additional funding was provided by the Universidad de Alcalá for travel by S. M. Scheiner
Cita bibliográfica
Conservation Ecology [online], 1999, v. 3, n. 1, art. 5
Palabras clave
Commonness
Endangered species
Generalist/specialist trade-off
Geographic range
Habitat occupancy
Habitat specificity
Iberia
Local abundance
Montane grasslands
Rarity
Superior organism theory
Descripción
The copyright to this article passed from the Ecological Society of America to the Resilience Alliance on 1 January 2000.
Published in the Journal Ecology and Society (formerly Conservation Ecology)
Tipo de documento
info:eu-repo/semantics/article
Versión
info:eu-repo/semantics/publishedVersion
Versión del editor
http://www.ecologyandsociety.org/vol3/iss1/art5/Derechos
© The Resilience Alliance, 1999
Derechos de acceso
info:eu-repo/semantics/openAccess
Resumen
We examined patterns of commonness and rarity among plant species in montane wet grasslands of Iberia. This examination is set within two contexts. First, we expanded on an earlier scheme for classifying species as common or rare by adding a fourth criterion, the ability of that species to occupy a larger or smaller fraction of its potential suitable habitats, i.e., habitat occupancy. Second, we explicated two theories, the superior organism theory and the generalist/specialist trade-off theory. The data consisted of 232 species distributed among 92 plots. The species were measured for mean local abundance, size of environmental volume occupied, percentage of volume occupied, range within Iberia, and range in Europe and the Mediterranean basin. In general, all measures were positively correlated, in agreement with the superior organism theory. However, specialist species were also found. Thus, patterns of commonness and rarity may be due to a combination of mechanisms. Analyses such as ours can also be used as a first step in identifying habitats and species that may be endangered.
Ficheros en el ítem
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Commonness_ Conserv. Ecol._1999.pdf | 259.7Kb |
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- ECOLOGÍA - Artículos [239]