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DIGITAL.CSIC
Conference object . 1996 . Peer-reviewed
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Variación de la riqueza específica y producción aérea de biomasa en pastizales semiáridos

Authors: Pérez Corona, M. Esther; Vázquez de Aldana, Beatriz R.; García Ciudad, Antonia; García Criado, Balbino;

Variación de la riqueza específica y producción aérea de biomasa en pastizales semiáridos

Abstract

[ES]Se estudia la producción de biomasa aérea neta, la proporción de las familias botánicas en la comunidad (gramíneas, leguminosas y otras familias), la riqueza específica y la diversidad de pastizales semiáridos en zonas de dehesa del centro-oeste peninsular. Se considera la influencia del gradiente topográfico de ladera, substrato, tipo de vegetación arbórea, altitud y características edáficas. Entre las variables edáficas se consideran pH, contenido en nitrógeno, carbono, potasio, calcio y fracciones arena, arcilla y limo. Se observan altos valores de diversidad para estas zonas, aunque no existen diferencias significativas entre las zonas del gradiente topográfico, según la vegetación arbórea dominante, substrato o altitud. Existen diferencias significativas en la riqueza de especies para distintas zonas, substrato o altitud. Se encontraron relaciones significativas entre la biomasa y algunos parámetros del suelo, como la materia orgánica o el carbono. La diversidad y la riqueza específica se encuentran en general poco relacionadas con las variables del suelo.

[EN]The aboveground biomass production, proportion of botanical groups in the community (grasses, legumes and other families), species richness and diversity were studied in semiarid grasslands of CW Spain. The influence of topographical gradient, substrate, tree species, soil characteristics and altitude on the former variables was considered. Within soil variables pH, N, and C content, K and Ca available and sand, clay and lime fractions were considered. High values of diversity were observed but not significant relationship with the topographical gradient, tree vegetation, substrate or altitude was found. There were differences in species richness between slope zones, substrates or altitutes. There were also significant relationships between biomass and soil variables such as organic matter or carbon content. Diversity and species richness were poorly related to soil variables.

4 páginas, 2 tablas .-- Congreso celebrado en la Rioja en 1996

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Spain
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Keywords

Diversity, Correlations, Biomass, Slopes

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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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