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Papers by Marcelo Cabido

DOAJ (DOAJ: Directory of Open Access Journals), Jun 1, 2010

En este trabajo se presenta una guía para una excursión botánica que se llevó a cabo por las Sier... more En este trabajo se presenta una guía para una excursión botánica que se llevó a cabo por las Sierras de Córdoba en ocasión de las XXXII Jornadas Argentinas de Botánica realizadas en la localidad de Huerta Grande, Córdoba, entre el 5 y el 8 de octubre de 2009. La nomenclatura de los taxones mencionados en la guía sigue al Catálogo de Plantas Vasculares del Cono Sur (www.darwin.edu.ar).

Phytocoenologia, Aug 16, 1989

La importancia de la composición química foliar, particularmente de nitrógeno y fósforo, como ind... more La importancia de la composición química foliar, particularmente de nitrógeno y fósforo, como indicador de la estrategia de crecimiento de las plantas ha sido reconocida en la literatura. Sin embargo, la mayoría de los estudios previos se restringen a grupos de especies emparentadas, o bien representan floras con un espectro reducido de formas de vida. El objetivo de este trabajo fue establecer relaciones entre la composición química de las hojas y otros caracteres foliares en diferentes tipos funcionales de plantas provenientes de un gradiente climático del centro-oeste de Argentina. Los mayores contenidos de N y P, y las menores relaciones C:N y C:P, se encontraron en las especies pertenecientes a los tipos funcionales dicotiledoncas herbáceas y lefiosas caducifolias. Los menores contenidos de N y P, y las mayores relaciones C:N y C:P, aparecieron en brotrielioides, arbustos afilos y graminoides. Las especies con bajo contenido foliar de N y P, y altas relaciones C:N y C:P, en general mostraron mayor contenido de materia seca foliar, hojas más esclerófilas, en algunos casos alas angostas, y de descomposición más lenta que las especies con mayores contenidos de N y P y menores relaciones C:N y C:P. Los patrones observados en este estudio confirmarían la importancia de la composición química como indicador del comportamiento ecológico de las plantas, aún considerando un amplio espectro de tipos funcionales y taxa.The relevance of leaf nutrient content as an indicator of plant growth strategy is well recognised in the literature. However, most studies are restricted to related group of species, or represent floras with a narrow range of plant life forms. The aim of this study was to document relationships between leaf nutrient content and leaf traits of different plant functional types selected from a climatic gradient of central-western Argentina. Herbaceous dicots and deciduous woody plants showed the highest leaf N and P contents and the lowest C:N and C:P ratios. Bromeliads. aphyllous shrubs and graminoids showed opposite characteristics. In general, species with low leaf N and P content and high C:N and C:P ratios showed higher leaf dry matter content, more sclerophyllous leaves, and lower leaf decomposition rate than species with higher leaf N and P contents and lower C:N and C:P ratios. These patterns highlight the relevance of leaf nutrient content as an indicator of plant ecological behaviour over a wide range of plant functional types and taxa.Fil: Vendramini, Fernanda. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; ArgentinaFil: Díaz, Sandra Myrna. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; ArgentinaFil: Pérez Harguindeguy, Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; ArgentinaFil: Cabido, Marcelo Ruben. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; ArgentinaFil: Llano Sotelo, José M.. Universidad de Sonora; MéxicoFil: Castellanos, Alejandro. Universidad de Sonora; Méxic

A escala de todo el país, la vegetación de la provincia de La Rioja se conoce a través de las con... more A escala de todo el país, la vegetación de la provincia de La Rioja se conoce a través de las contribuciones fitogeográficas de Cabrera (1953, 1976) y de bosquejos anteriores sobre la vegetación de Argentina. En su esquema fitogeográfico, Cabrera presenta una división del país en Dominios, Provincias y Distritos Fitogeográficos, basados parcialmente en un criterio taxonómico (presencia de taxones endémicos), pero también con un fundamento fisonómico.Fil: Cabido, Marcelo Ruben. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; ArgentinaFil: Zak, Marcelo Román. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; ArgentinaFil: Biurrun, Fernando. Universidad Nacional de La Rioja; Argentin

Journal of Biogeography, Jul 27, 2007

Aim Based on the biochemical and physiological attributes of C 4 grasses, and on the close associ... more Aim Based on the biochemical and physiological attributes of C 4 grasses, and on the close association between decarboxylation pathways and the taxa in which they evolved, the hypotheses tested were: (1) that C 4 grasses would become progressively more abundant as precipitation decreased, with grasses of the NADP-me subtype more abundant in wetter sites and those of the NAD-me subtype more common in arid regions; and (2) that the distribution of grass subfamilies would also be correlated with annual precipitation. Location The study was conducted along a precipitation gradient in central Argentina, from the eastern Pampas (>1000 mm year)1) to the western deserts and semi-deserts near the Andes (<100 mm year)1). Methods Percentage of species and relative cover of C 3 and C 4 grasses (including C 4 subtypes) in local floras from 15 lowland sites of central Argentina were obtained from our own unpublished data and from recently published floristic surveys. Pearson correlation coefficients were obtained between grass distribution parameters and the available climatic data. Results The percentage of C 4 grasses increased towards the arid extreme and showed a strong negative correlation with annual rainfall (r =)0.74, P < 0.01). Within the C 4 subtypes, the NADP-me species showed a higher proportional representation at the wetter extreme, whereas the representation of NAD-me species increased towards the more arid extreme. The relationship of PEP-ck species with climatic parameters in central Argentina was less evident. The distributions of the Panicoideae and Chloridoideae subfamilies along the precipitation gradient were diametrically opposed, with the Panicoideae positively (r = 0.86, P < 0.001) and the Chloridoideae negatively (r =)0.87, P < 0.001) correlated with annual precipitation. Main conclusions Our data are consistent with the broad observation that C 4 grasses tend to dominate in areas where the wet season falls in the warmer summer months. In agreement with previously reported results for Africa, Asia, Australia and North America, we describe here for the first time a significant relationship between annual precipitation and the prevalence of the NADP-me and NAD-me photosynthetic pathways along climatic gradients for the Neotropics. We also report for the first time that correlations between C 4 species and annual rainfall are stronger when the relative cover of grass species is considered. The association of grass subfamilies Panicoideae and Chloridoideae with rainfall is as strong as that recorded for the NADP-me and NAD-me variants, respectively, suggesting that characteristics other than decarboxylation type may be responsible for the geographic patterns described in this study.

Phytocoenologia, Dec 17, 1990

Applied Vegetation Science, 2002

Austral Ecology, Jun 28, 2008

ABSTRACT Abstract We estimated the below-ground net plant productivity (BNPP) of different biomas... more ABSTRACT Abstract We estimated the below-ground net plant productivity (BNPP) of different biomass components in an intensively and continuously 45-ha grazed site and in a neighbouring exclosure ungrazed for 16 years for a natural mountain grassland in central Argentina. We measured approximately twice as much dead below-ground biomass in the grazed site as in the ungrazed site, with a strong concentration of total below-ground biomass towards the upper 10 cm of the soil layer in both sites. The main contribution to total live biomass was accounted for by very fine (&amp;lt;0.5 mm) and fine roots (0.5–1.0 mm) both at the grazed (79%) and at the ungrazed (81%) sites. We measured more dead biomass for almost all root components, more live biomass of rhizomes, tap roots and bulbs, and less live biomass of thicker roots (&amp;gt;1 mm) in the grazed site. The seasonal variation of total live below-ground biomass mainly reflected climate, with the growing season being limited to the warmer and wetter portion of the year, but such variation was higher in the grazed site. Using different methods of estimation of BNPP, we estimated maximum values of 1241 and 723 g m−2 year−1 for the grazed and ungrazed sites, respectively. We estimated that very fine root productivity was almost twice as high at the grazed site as at the ungrazed one, despite the fact that both sites had similar total live biomass, and root turnover rate was twofold at the grazed site.

Agriscientia, 1996

Se determinan los caracteres y elementos de la epidermis foliar de 29 especies herbaceas presente... more Se determinan los caracteres y elementos de la epidermis foliar de 29 especies herbaceas presentes en un pastizal natural de la Pampa de Achala (Provincia de Cordoba, Argentina). Los caracteres de mayor utilidad para esa determinacion fueron: forma y grado de ondulacion de la pared de las celulas epidermicas propiamente dichas, tricomas, estomas y ornamentacion de la cuticula . En base a estos caracteres se elaboro una clave para la identificacion de los fragmentos de hojas de las especies estudiadas.

DOAJ (DOAJ: Directory of Open Access Journals), Jun 1, 2013

Vegetation Classification and Survey

Aims: We address the following questions: 1) Which are the main vegetation types that currently o... more Aims: We address the following questions: 1) Which are the main vegetation types that currently occur in the Arid Chaco? 2) Do those vegetation types differ in terms of floristic composition, endemism, chorotypes and life forms? and 3) Is there any spatial association between the vegetation types and the environmental heterogeneity of the Arid Chaco? Study area: The southwestern extreme of the Gran Chaco, in Central-Western Argentina. Methods: The survey was based on a dataset comprising 654 relevés collected according to the Braun-Blanquet method. Data were classified by the hierarchical ISOmetric feature mapping and Partition Around Medoids (ISOPAM), and ordinated through isometric feature mapping (ISOMAP). Bioclimatic and edaphic variables were related to the ISOMAP ordination. Results: We recorded 439 vascular plant species, 62 endemic at the national level and 22 endemic species restricted to the study and surrounding environments in Central-Western Argentina. A total of nine v...

Fil: Diaz, Sandra Myrna. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cient... more Fil: Diaz, Sandra Myrna. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Cordoba. Instituto Multidisciplinario de Biologia Vegetal. Universidad Nacional de Cordoba. Facultad de Ciencias Exactas Fisicas y Naturales. Instituto Multidisciplinario de Biologia Vegetal; Argentina

Trends in Ecology and Evolution, 2001

DOAJ (DOAJ: Directory of Open Access Journals), Jun 1, 2010

En este trabajo se presenta una guía para una excursión botánica que se llevó a cabo por las Sier... more En este trabajo se presenta una guía para una excursión botánica que se llevó a cabo por las Sierras de Córdoba en ocasión de las XXXII Jornadas Argentinas de Botánica realizadas en la localidad de Huerta Grande, Córdoba, entre el 5 y el 8 de octubre de 2009. La nomenclatura de los taxones mencionados en la guía sigue al Catálogo de Plantas Vasculares del Cono Sur (www.darwin.edu.ar).

Phytocoenologia, Aug 16, 1989

La importancia de la composición química foliar, particularmente de nitrógeno y fósforo, como ind... more La importancia de la composición química foliar, particularmente de nitrógeno y fósforo, como indicador de la estrategia de crecimiento de las plantas ha sido reconocida en la literatura. Sin embargo, la mayoría de los estudios previos se restringen a grupos de especies emparentadas, o bien representan floras con un espectro reducido de formas de vida. El objetivo de este trabajo fue establecer relaciones entre la composición química de las hojas y otros caracteres foliares en diferentes tipos funcionales de plantas provenientes de un gradiente climático del centro-oeste de Argentina. Los mayores contenidos de N y P, y las menores relaciones C:N y C:P, se encontraron en las especies pertenecientes a los tipos funcionales dicotiledoncas herbáceas y lefiosas caducifolias. Los menores contenidos de N y P, y las mayores relaciones C:N y C:P, aparecieron en brotrielioides, arbustos afilos y graminoides. Las especies con bajo contenido foliar de N y P, y altas relaciones C:N y C:P, en general mostraron mayor contenido de materia seca foliar, hojas más esclerófilas, en algunos casos alas angostas, y de descomposición más lenta que las especies con mayores contenidos de N y P y menores relaciones C:N y C:P. Los patrones observados en este estudio confirmarían la importancia de la composición química como indicador del comportamiento ecológico de las plantas, aún considerando un amplio espectro de tipos funcionales y taxa.The relevance of leaf nutrient content as an indicator of plant growth strategy is well recognised in the literature. However, most studies are restricted to related group of species, or represent floras with a narrow range of plant life forms. The aim of this study was to document relationships between leaf nutrient content and leaf traits of different plant functional types selected from a climatic gradient of central-western Argentina. Herbaceous dicots and deciduous woody plants showed the highest leaf N and P contents and the lowest C:N and C:P ratios. Bromeliads. aphyllous shrubs and graminoids showed opposite characteristics. In general, species with low leaf N and P content and high C:N and C:P ratios showed higher leaf dry matter content, more sclerophyllous leaves, and lower leaf decomposition rate than species with higher leaf N and P contents and lower C:N and C:P ratios. These patterns highlight the relevance of leaf nutrient content as an indicator of plant ecological behaviour over a wide range of plant functional types and taxa.Fil: Vendramini, Fernanda. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; ArgentinaFil: Díaz, Sandra Myrna. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; ArgentinaFil: Pérez Harguindeguy, Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; ArgentinaFil: Cabido, Marcelo Ruben. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; ArgentinaFil: Llano Sotelo, José M.. Universidad de Sonora; MéxicoFil: Castellanos, Alejandro. Universidad de Sonora; Méxic

A escala de todo el país, la vegetación de la provincia de La Rioja se conoce a través de las con... more A escala de todo el país, la vegetación de la provincia de La Rioja se conoce a través de las contribuciones fitogeográficas de Cabrera (1953, 1976) y de bosquejos anteriores sobre la vegetación de Argentina. En su esquema fitogeográfico, Cabrera presenta una división del país en Dominios, Provincias y Distritos Fitogeográficos, basados parcialmente en un criterio taxonómico (presencia de taxones endémicos), pero también con un fundamento fisonómico.Fil: Cabido, Marcelo Ruben. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; ArgentinaFil: Zak, Marcelo Román. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; ArgentinaFil: Biurrun, Fernando. Universidad Nacional de La Rioja; Argentin

Journal of Biogeography, Jul 27, 2007

Aim Based on the biochemical and physiological attributes of C 4 grasses, and on the close associ... more Aim Based on the biochemical and physiological attributes of C 4 grasses, and on the close association between decarboxylation pathways and the taxa in which they evolved, the hypotheses tested were: (1) that C 4 grasses would become progressively more abundant as precipitation decreased, with grasses of the NADP-me subtype more abundant in wetter sites and those of the NAD-me subtype more common in arid regions; and (2) that the distribution of grass subfamilies would also be correlated with annual precipitation. Location The study was conducted along a precipitation gradient in central Argentina, from the eastern Pampas (>1000 mm year)1) to the western deserts and semi-deserts near the Andes (<100 mm year)1). Methods Percentage of species and relative cover of C 3 and C 4 grasses (including C 4 subtypes) in local floras from 15 lowland sites of central Argentina were obtained from our own unpublished data and from recently published floristic surveys. Pearson correlation coefficients were obtained between grass distribution parameters and the available climatic data. Results The percentage of C 4 grasses increased towards the arid extreme and showed a strong negative correlation with annual rainfall (r =)0.74, P < 0.01). Within the C 4 subtypes, the NADP-me species showed a higher proportional representation at the wetter extreme, whereas the representation of NAD-me species increased towards the more arid extreme. The relationship of PEP-ck species with climatic parameters in central Argentina was less evident. The distributions of the Panicoideae and Chloridoideae subfamilies along the precipitation gradient were diametrically opposed, with the Panicoideae positively (r = 0.86, P < 0.001) and the Chloridoideae negatively (r =)0.87, P < 0.001) correlated with annual precipitation. Main conclusions Our data are consistent with the broad observation that C 4 grasses tend to dominate in areas where the wet season falls in the warmer summer months. In agreement with previously reported results for Africa, Asia, Australia and North America, we describe here for the first time a significant relationship between annual precipitation and the prevalence of the NADP-me and NAD-me photosynthetic pathways along climatic gradients for the Neotropics. We also report for the first time that correlations between C 4 species and annual rainfall are stronger when the relative cover of grass species is considered. The association of grass subfamilies Panicoideae and Chloridoideae with rainfall is as strong as that recorded for the NADP-me and NAD-me variants, respectively, suggesting that characteristics other than decarboxylation type may be responsible for the geographic patterns described in this study.

Phytocoenologia, Dec 17, 1990

Applied Vegetation Science, 2002

Austral Ecology, Jun 28, 2008

ABSTRACT Abstract We estimated the below-ground net plant productivity (BNPP) of different biomas... more ABSTRACT Abstract We estimated the below-ground net plant productivity (BNPP) of different biomass components in an intensively and continuously 45-ha grazed site and in a neighbouring exclosure ungrazed for 16 years for a natural mountain grassland in central Argentina. We measured approximately twice as much dead below-ground biomass in the grazed site as in the ungrazed site, with a strong concentration of total below-ground biomass towards the upper 10 cm of the soil layer in both sites. The main contribution to total live biomass was accounted for by very fine (&amp;lt;0.5 mm) and fine roots (0.5–1.0 mm) both at the grazed (79%) and at the ungrazed (81%) sites. We measured more dead biomass for almost all root components, more live biomass of rhizomes, tap roots and bulbs, and less live biomass of thicker roots (&amp;gt;1 mm) in the grazed site. The seasonal variation of total live below-ground biomass mainly reflected climate, with the growing season being limited to the warmer and wetter portion of the year, but such variation was higher in the grazed site. Using different methods of estimation of BNPP, we estimated maximum values of 1241 and 723 g m−2 year−1 for the grazed and ungrazed sites, respectively. We estimated that very fine root productivity was almost twice as high at the grazed site as at the ungrazed one, despite the fact that both sites had similar total live biomass, and root turnover rate was twofold at the grazed site.

Agriscientia, 1996

Se determinan los caracteres y elementos de la epidermis foliar de 29 especies herbaceas presente... more Se determinan los caracteres y elementos de la epidermis foliar de 29 especies herbaceas presentes en un pastizal natural de la Pampa de Achala (Provincia de Cordoba, Argentina). Los caracteres de mayor utilidad para esa determinacion fueron: forma y grado de ondulacion de la pared de las celulas epidermicas propiamente dichas, tricomas, estomas y ornamentacion de la cuticula . En base a estos caracteres se elaboro una clave para la identificacion de los fragmentos de hojas de las especies estudiadas.

DOAJ (DOAJ: Directory of Open Access Journals), Jun 1, 2013

Vegetation Classification and Survey

Aims: We address the following questions: 1) Which are the main vegetation types that currently o... more Aims: We address the following questions: 1) Which are the main vegetation types that currently occur in the Arid Chaco? 2) Do those vegetation types differ in terms of floristic composition, endemism, chorotypes and life forms? and 3) Is there any spatial association between the vegetation types and the environmental heterogeneity of the Arid Chaco? Study area: The southwestern extreme of the Gran Chaco, in Central-Western Argentina. Methods: The survey was based on a dataset comprising 654 relevés collected according to the Braun-Blanquet method. Data were classified by the hierarchical ISOmetric feature mapping and Partition Around Medoids (ISOPAM), and ordinated through isometric feature mapping (ISOMAP). Bioclimatic and edaphic variables were related to the ISOMAP ordination. Results: We recorded 439 vascular plant species, 62 endemic at the national level and 22 endemic species restricted to the study and surrounding environments in Central-Western Argentina. A total of nine v...

Fil: Diaz, Sandra Myrna. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cient... more Fil: Diaz, Sandra Myrna. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Cordoba. Instituto Multidisciplinario de Biologia Vegetal. Universidad Nacional de Cordoba. Facultad de Ciencias Exactas Fisicas y Naturales. Instituto Multidisciplinario de Biologia Vegetal; Argentina

Trends in Ecology and Evolution, 2001