https://socictopen.socict.org/files/original/6d351e446772c8563b0d92e7f774dcb9.pdf 50652743fbbc308f7388651792c2a3c2 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Agricultura sostenible Description An account of the resource Dominio científico: Agricultura sostenible Text A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text. Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Geographic variation in diversity of wave exposed rocky intertidal communities along central Chile Variación geográfica de la biodiversidad en hábitats intermareales rocosos de Chile central Creator An entity primarily responsible for making the resource BERNARDO R BROITMAN, FREDY VÉLIZ, TATIANA MANZUR, EVIE A WIETERS, G RANDALL FINKE, PAULINA A FORNES, NELSON VALDIVIA, SERGIO A NAVARRETE Description An account of the resource Along the coast of central Chile, geographic trends of diversity have been inferred from literature compilations and museum collections based on species range limits for some taxonomic groups. However, spatially-intensive field-based assessments of macrobenthic species richness are largely missing. Over the course of a multiyear study (1998-2005), we characterized latitudinal patterns of rocky intertidal diversity at 18 sites along the coast of central Chile (29-36° S). At each site, the number of sessile and mobile macrobenthic species was quantified in 0.25 m² quadrats. Two estimators of local (alpha) diversity were used: observed local species richness, calculated from the asymptote of a species-rarefaction curve, and the Chao2 index, which takes into account the effect of rare species on estimates of local richness. We identified a total of 71 species belonging to 66 genera for a total of 86 taxa. The most diverse groups were herbivorous mollusks (27 taxa) and macroalgae (43 taxa). Diversity showed a complex spatial pattern with areas of high species richness interspersed with areas of low richness. In accordance with previous work, we found no trend in the number of herbivorous mollusks and an inverse and significant latitudinal gradient in the number of algal species. Our results highlight the need for taxonomically diverse assessments of biodiversity of the dominant taxa that conform intertidal communities.A lo largo de la costa de Chile central, los patrones geográficos de diversidad han sido inferidos a partir de revisiones literarias y colecciones de museos para algunos grupos taxonómicos. Sin embargo, aun no contamos con una evaluación integral, y en terreno, de la riqueza de especies macrobentónicas intermareales. En un estudio de largo plazo conducido entre 1998 y 2005 caracterizamos los patrones latitudinales en la biodiversidad del intermareal rocoso en 18 sitios a lo largo de la costa de Chile central (29-36° S). En cada sitio, el número de especies sésiles y móviles fue cuantificado en cuadrantes de 0.25 m². Usamos dos estimadores de la riqueza de especies: la riqueza local observada, correspondiente a la asíntota de la curva de acumulación de especies, y el índice Chao2, el cual considera el efecto de especies raras en la estimación de la diversidad local. Identificamos 71 especies pertenecientes a 66 géneros y a un total de 86 taxa. Los grupos más diversos fueron moluscos (27 taxa) y macroalgas (43 taxa). La riqueza de especies mostró un patrón complejo en el cual áreas de alta riqueza específica aparecieron intercaladas con áreas de baja riqueza. Además, observamos una alta variabilidad espacial en el número de especies herbívoras y un patrón latitudinal inverso en el número de especies algales. Nuestros resultados apuntan a la necesidad de incorporar una variedad de grupos taxonómicos y un rango de escalas espaciales en estudios de biodiversidad. Date A point or period of time associated with an event in the lifecycle of the resource 2011 Subject The topic of the resource Diversidad, Intertidal ecology, biological diversity, ecología intermareal, gradientes latitudinales en diversidad, latitudinal diversity gradient, riqueza de especies, species richness Source A related resource from which the described resource is derived Revista Chilena de Historia Natural Publisher An entity responsible for making the resource available BMC Coverage The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant Botany, Zoology Relation A related resource <a href="http://www.scielo.cl/scielo.php?script=sci_arttext&amp;pid=S0716-078X2011000100011" target="_blank" rel="noreferrer noopener">http://www.scielo.cl/scielo.php?script=sci_arttext&amp;pid=S0716-078X2011000100011</a>