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CONICET Digital
Article . 2014
License: CC BY NC SA
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Vegetación de afloramientos carbonáticos de montañas del centro de Argentina

Authors: Cantero, Juan José; Sfragulla, Jorge; Núñez, César; Mulko, José; Bonalumi, Aldo; Amuchastegui, Andrea; Barboza, Gloria Estela; +2 Authors

Vegetación de afloramientos carbonáticos de montañas del centro de Argentina

Abstract

En las montañas del centro de Argentina, con una intensa fragmentación y reemplazos de la vegetación natural, los afloramientos rocosos constituyen hábitats importantes para la conservación de la biodiversidad, como refugios de especies endémicas y raras. En este trabajo se exploró la variación composicional local de la vegetación en afloramientos de mármoles cálcicos y dolomíticos de las sierras de Córdoba y se compararonlas asociaciones entre diferentes tipologías geoquímicas y la composición florística en un gradiente altitudinal. Se relevaron cuatro afloramientos adyacentes de tipologías geoquímicas diferentes localizados en diferentes posiciones en un gradiente de altitud desde 1000 hasta 1800 msm, estimándose abundancia-cobertura de todas las plantas vasculares en 216 censos. Los atributos composicionales estructurales de la vegetación revelaron diferencias significativas entre litologías similares en diferentes estratos altitudinales y entre diferentes litologías para un mismo estrato altitudinal.La composición florística local está relacionada con la tipología geoquímica de los afloramientos y la altitud se sobrepone a ese patrón. Se establecieron relaciones entre la presencia de diferentes especies vegetales y tipologías de rocas calcíticas y dolomíticas de manera independiente a su posición en el gradiente de altitud. Se confirma la importancia de estas variables en la estructuración del hábitat y filtrado abiótico de especies y la importancia de su conocimiento para establecer prioridades en su conservación.

Vegetation of carbonate outcrops in mountains of central Argentina. In mountains of Central Argentina, which have severe fragmentation and replacement of natural vegetation, rocky outcrops are important habitats for biodiversity conservation, as refuges for endemic and rare species. In this paper, we explore the local compositional variation of vegetation in calcium and dolomitic outcrops of Sierras de Córdoba and compare associations between different geochemical types and floristic composition along a local altitudinal gradient. Four adjacent outcrops of different geochemical types located in different positions in a local elevation gradient from 1000 to 1800 m.a.s.l. were selected and cover-abundance of all vascular plants at 216 rélevés, was estimated. Significative differences of compositional vegetation attributes occurred between the different lithologies and altitudinal strata. At the local scale, the floristic composition appeared related to the geochemical typology of outcrops and this pattern is overlapped with altitude. It was possible to establish relationships between the presence of different vascular plants and different types of calcitic and dolomitic rocks, independently of their position in the altitudinal gradient. The importance of these variables in structuring the habitat and filtering of species is confirmed, and its importance in looking for priorities in conservation of these singular habitats.

Fil: Cantero, Juan José. Universidad Nacional de Río Cuarto. Facultad de Agronomía y Veterinaria; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Instituto Multidisciplinario de Biología Vegetal (p); Argentina; Argentina

Fil: Barboza, Gloria Estela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Instituto Multidisciplinario de Biología Vegetal (p); Argentina; Argentina. Universidad Nacional de Cordoba. Facultad de Ciencias Quimicas; Argentina

Fil: Chiarini, Franco Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Instituto Multidisciplinario de Biología Vegetal (p); Argentina; Argentina. Universidad Nacional de Córdoba. Museo Botánico Córdoba; Argentina

Fil: Ariza Espinar, Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Instituto Multidisciplinario de Biología Vegetal (p); Argentina; Argentina. Universidad Nacional de Córdoba. Museo Botánico Córdoba; Argentina

Fil: Sfragulla, Jorge. Secretaría de Minería, Provincia de Córdoba; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina

Fil: Bonalumi, Aldo. Secretaría de Minería, Provincia de Córdoba; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina

Fil: Amuchastegui, Andrea. Universidad Nacional de Río Cuarto. Facultad de Agronomía y Veterinaria; Argentina

Fil: Núñez, César. Secretaria de Industria y Mineria; Argentina

Country
Argentina
Keywords

GEOQUÍMICA, ALTITUD, https://purl.org/becyt/ford/1.5, COMPOSICIÓN FLORISTICA, AFLORAMIENTOS CARBONÁTICOS, https://purl.org/becyt/ford/1

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selected citations
These citations are derived from selected sources.
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).
BIP!Citations provided by BIP!
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.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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Italian National Biodiversity Future Center