Climate and life forms of plants in the Andean − Extra-Andean transition of Northern Patagonia from Argentina
Introduction and objectives: Restricted self-locomotion exposes plants to stress which promotes adaptation. In the Andean − Extra-Andean ecotone of Argentinean Patagonia, adaptation has been mainly associated to aridity. In this research, the adaptation of plants to coldness was evaluated based on t...
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| Formato: | Artículo revista |
| Lenguaje: | Español |
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Sociedad Argentina de Botánica
2021
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| Acceso en línea: | https://revistas.unc.edu.ar/index.php/BSAB/article/view/32588 |
| Aporte de: |
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I10-R10-article-32588 |
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ojs |
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Universidad Nacional de Córdoba |
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I-10 |
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Revistas de la UNC |
| language |
Español |
| format |
Artículo revista |
| topic |
Cold stress forest - steppe ecotone species frequency species richness Ecotono bosque - estepa estrés por frío frecuencia de especies riqueza de especies |
| spellingShingle |
Cold stress forest - steppe ecotone species frequency species richness Ecotono bosque - estepa estrés por frío frecuencia de especies riqueza de especies Dezzotti, Alejandro Medina, Andrea Mortoro, Ariel Climate and life forms of plants in the Andean − Extra-Andean transition of Northern Patagonia from Argentina |
| topic_facet |
Cold stress forest - steppe ecotone species frequency species richness Ecotono bosque - estepa estrés por frío frecuencia de especies riqueza de especies |
| author |
Dezzotti, Alejandro Medina, Andrea Mortoro, Ariel |
| author_facet |
Dezzotti, Alejandro Medina, Andrea Mortoro, Ariel |
| author_sort |
Dezzotti, Alejandro |
| title |
Climate and life forms of plants in the Andean − Extra-Andean transition of Northern Patagonia from Argentina |
| title_short |
Climate and life forms of plants in the Andean − Extra-Andean transition of Northern Patagonia from Argentina |
| title_full |
Climate and life forms of plants in the Andean − Extra-Andean transition of Northern Patagonia from Argentina |
| title_fullStr |
Climate and life forms of plants in the Andean − Extra-Andean transition of Northern Patagonia from Argentina |
| title_full_unstemmed |
Climate and life forms of plants in the Andean − Extra-Andean transition of Northern Patagonia from Argentina |
| title_sort |
climate and life forms of plants in the andean − extra-andean transition of northern patagonia from argentina |
| description |
Introduction and objectives: Restricted self-locomotion exposes plants to stress which promotes adaptation. In the Andean − Extra-Andean ecotone of Argentinean Patagonia, adaptation has been mainly associated to aridity. In this research, the adaptation of plants to coldness was evaluated based on the analysis of life forms which represent a survival strategy during the unfavourable season.
M&M: In Aguas Frías (38° 46´ S, 70° 54´ W) and Litrán (38° 54´ S, 71° 01´ W), the climate was characterized through meteorological information and the vegetation types were characterized through a physiognomic - floristic approach. Plants were classified according to species, origin, growth form, and life form, and the abundance of each category was estimated through incidence data.
Results: The climate is cold temperate humid to semiarid, and the vegetation belongs to the Patagonian and Subantarctic phytogeographic provinces. The vegetation units comprised forests, steppes and grasslands. Total richness was 148; 139 species were natives and perennials, 122 herbaceous, 143 rare, and 64 belonged to a single unit. The similarity between units was low, and hemicryptophytes dominated the floristic (68%) and the vegetational (56%) biological spectra.
Conclusions: The intense environmental gradient shaped the strong compositional and structural variability of the vegetation, and coldness would have been a key factor judging by the dominance of a life form adapted to low temperatures. A better understanding of this relationships is essential for a sound management of Patagonian ecosystems. |
| publisher |
Sociedad Argentina de Botánica |
| publishDate |
2021 |
| url |
https://revistas.unc.edu.ar/index.php/BSAB/article/view/32588 |
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2022-08-20T01:21:29Z |
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I10-R10-article-325882021-11-04T14:07:35Z Climate and life forms of plants in the Andean − Extra-Andean transition of Northern Patagonia from Argentina Clima y formas de vida de las plantas en la transición andina - extraandina de la Patagonia septentrional argentina Dezzotti, Alejandro Medina, Andrea Mortoro, Ariel Cold stress forest - steppe ecotone species frequency species richness Ecotono bosque - estepa estrés por frío frecuencia de especies riqueza de especies Introduction and objectives: Restricted self-locomotion exposes plants to stress which promotes adaptation. In the Andean − Extra-Andean ecotone of Argentinean Patagonia, adaptation has been mainly associated to aridity. In this research, the adaptation of plants to coldness was evaluated based on the analysis of life forms which represent a survival strategy during the unfavourable season. M&M: In Aguas Frías (38° 46´ S, 70° 54´ W) and Litrán (38° 54´ S, 71° 01´ W), the climate was characterized through meteorological information and the vegetation types were characterized through a physiognomic - floristic approach. Plants were classified according to species, origin, growth form, and life form, and the abundance of each category was estimated through incidence data. Results: The climate is cold temperate humid to semiarid, and the vegetation belongs to the Patagonian and Subantarctic phytogeographic provinces. The vegetation units comprised forests, steppes and grasslands. Total richness was 148; 139 species were natives and perennials, 122 herbaceous, 143 rare, and 64 belonged to a single unit. The similarity between units was low, and hemicryptophytes dominated the floristic (68%) and the vegetational (56%) biological spectra. Conclusions: The intense environmental gradient shaped the strong compositional and structural variability of the vegetation, and coldness would have been a key factor judging by the dominance of a life form adapted to low temperatures. A better understanding of this relationships is essential for a sound management of Patagonian ecosystems. Introducción y objetivos: La autolocomoción restringida expone a las plantas a estrés, que promueve la adaptación. En el ecotono andino - extraandino de la Patagonia argentina, la adaptación está asociada principalmente a la aridez. En este trabajo se investigó la adaptación de las plantas al frío, basada en el análisis de las formas de vida que representan una estrategia de supervivencia durante la estación desfavorable. M&M: En Aguas Frías (38° 46´ S, 70° 54´ O) y Litrán (38° 54´ S, 71° 01´ O), se caracterizó el clima a través de información meteorológica y la vegetación en forma fisonómico - florística. Las plantas se clasificaron de acuerdo a la especie, el origen, la forma de crecimiento y la forma de vida, y la abundancia se estimó a través de datos de incidencia. Resultados: El clima es templado frío húmedo - semiárido y la vegetación corresponde a las Provincias Patagónica y Subantártica. Las unidades de vegetación incluyeron bosques, estepas y praderas. La riqueza total fue 148; 139 especies fueron nativas, 122 herbáceas, 143 raras y 64 pertenecieron a una única unidad. La similitud entre unidades fue baja y las hemicriptófitas dominaron los espectros biológicos florístico (68%) y vegetacional (56%). Conclusiones: El intenso gradiente ambiental modeló las marcadas diferencias de la vegetación, y el frío habría sido un factor clave a juzgar por la dominancia de un forma de vida adaptada a las bajas temperaturas. Una mayor comprensión de estas relaciones es esencial para el manejo de los ecosistemas patagónicos. Sociedad Argentina de Botánica 2021-09-17 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf text/html https://revistas.unc.edu.ar/index.php/BSAB/article/view/32588 Boletín de la Sociedad Argentina de Botánica (Journal of the Argentine Botanical Society; Vol. 56 No. 3 (2021): September Boletín de la Sociedad Argentina de Botánica; Vol. 56 Núm. 3 (2021): Septiembre Boletín de la Sociedad Argentina de Botánica; v. 56 n. 3 (2021): Septiembre 1851-2372 0373-580X 10.31055/1851.2372.v56.n3 spa https://revistas.unc.edu.ar/index.php/BSAB/article/view/32588/35218 https://revistas.unc.edu.ar/index.php/BSAB/article/view/32588/35219 Derechos de autor 2021 Alejandro Dezzotti, Andrea Medina, Ariel Mortoro https://creativecommons.org/licenses/by-nc-nd/4.0 |