Classification of rocky outcrops plant communities in the mountains of Central Argentina

Cantero, Juan José; Zeballos, Sebastián Rodolfo; Núñez, César; Sfragulla, Jorge A.; Acosta, Alicia Teresa Rosario; Funes, Guillermo; Amuchástegui, Andrea; Mulko, José; Bonalumi, Aldo Antonio; Cabido, Marcelo

doi:10.1111/avsc.12686

Applied Vegetation Science

2022

DOI: 10.1111/avsc.12686

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Classification of rocky outcrops plant communities in the mountains of Central Argentina

Juan José Cantero

Sebastián Rodolfo Zeballos

César Núñez

et al.

Abstract: Aims: Classification of plant communities and identification of their diagnostic species in different types of rocky outcrops in mountains from Central Argentina. We also explored how these plant communities differ in their endemisms, chorotypes and non-natives species composition, as well as in rock chemistry, elevation and climatic variables.

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Cited by 3 publications

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Towards the construction of a seed traits database for restoration of subtropical seasonally dry ecosystems: Effects of light, temperature and seed storage on germination

Ferreras,

Venier,

Marcora

et al. 2025

Forest Ecology and Management

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Towards the construction of a seed traits database for restoration of subtropical seasonally dry ecosystems: Effects of light, temperature and seed storage on germination

Ferreras,

Venier,

Marcora

et al. 2025

Forest Ecology and Management

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Classification of montane grasslands in central Argentina

Zeballos,

Cantero,

Giorgis

et al. 2024

Applied Vegetation Science

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QuestionWe address the following questions: (1) which are the main plant communities in montane grasslands in central Argentina; (2) do those communities differ in terms of floristic composition, endemisms, chorotypes and life forms; and (3) which are the major environmental variables (climatic, topographic and edaphic) associated with the heterogeneity of the vegetation?LocationPampean Mountains (Sierras Pampeanas), Córdoba Province, central Argentina, an area of ca. 37,000 km2.MethodsThe survey was based on a data set comprising 746 relevés and 822 vascular plant species, collected in accordance with the Braun‐Blanquet sampling method. The data were classified using the hierarchical ISOmetric feature mapping and Partitioning Around Medoids, and ordinated through isometric feature mapping (ISOPAM). The environmental variables were related to the ISOPAM ordination.ResultsThe ISOPAM classification identified two clusters, five vegetation types and 17 plant communities, which were distributed across different elevations. There were notable differences in the diagnostic species, average percentages of endemic species, chorotypes and life forms among the various vegetation types and plant communities. The primary gradient in grassland vegetation was found to be associated with elevation and related climatic variables.ConclusionsThe study provides valuable insights into the montane grasslands of the Sierras Pampeanas in central Argentina. It presents a comprehensive classification of the region's grasslands, including tall tussock grasslands, humid grasslands, stony grasslands, and grasslands with scattered shrubs and trees. Each recognized unit is distinguished by diagnostic species and a distinct floristic composition. Our findings emphasize a significant division between grasslands at higher elevation, abundant in Andean species, and Piedmont and shrubby grasslands at lower elevations, characterized by a higher prevalence of Chacoan and other Neotropical species. Grassland vegetation in other regions of the Sierras Pampeanas remains poorly studied, requiring additional research to determine the syntaxonomic position of this vegetation.

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Vegetation types of the Arid Chaco in Central-Western Argentina

Zeballos¹,

Acosta²,

Agüero³

et al. 2023

VCS

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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 vegetation types, belonging to four major clusters, were identified. The most prominent chorotypes included species distributed in the Chaco region and in the Arid Chaco/Monte phytogeographic units. The predominant life forms were micro- and nano-phanerophytes, followed by hemicryptophytes, chamaephytes and mesophanerophytes. Conclusions: Major results highlighted that xerophytic shrublands are the most common vegetation types in this area as a result of the historical and present use, while old growth forests were constrained to areas with low anthropogenic disturbance in the last decades or to protected areas. Most vegetation types (with the exception of halophytic environments) are poorly differentiated from a floristic point of view; however, they clearly differ in physiognomy. The floristic composition of the vegetation types described revealed numerous species in common with other sectors of the Chaco of northern Argentina, Bolivia and Paraguay. Although the number of species restricted to the Arid Chaco was quite low, the most relevant chorotype included species with Western and Eastern Chaco distribution, conferring a clear Chaquenian identity to this area and discriminating it from other phytogeographic units. Taxonomic reference: Catálogo de las Plantas Vasculares del Cono Sur (Zuloaga et al. 2008) and its online update (http://www.darwin.edu.ar). Abbreviations: ISOMAP = isometric feature mapping; ISOPAM = isometric partitioning around medoids.

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Classification of rocky outcrops plant communities in the mountains of Central Argentina

Cited by 3 publications

References 91 publications

Towards the construction of a seed traits database for restoration of subtropical seasonally dry ecosystems: Effects of light, temperature and seed storage on germination

Towards the construction of a seed traits database for restoration of subtropical seasonally dry ecosystems: Effects of light, temperature and seed storage on germination

Classification of montane grasslands in central Argentina

Vegetation types of the Arid Chaco in Central-Western Argentina

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Classification of rocky outcrops plant communities in the mountains of Central Argentina

Cited by 3 publications

References 91 publications

Towards the construction of a seed traits database for restoration of subtropical seasonally dry ecosystems: Effects of light, temperature and seed storage on germination

Towards the construction of a seed traits database for restoration of subtropical seasonally dry ecosystems: Effects of light, temperature and seed storage on germination

Classification of montane grasslands in central Argentina

﻿Vegetation types of the Arid Chaco in Central-Western Argentina

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Vegetation types of the Arid Chaco in Central-Western Argentina