Floristic diversity of cultivated halomorphic soils of the Alto Valle de Río Negro (Argentina)
In the Alto Valle de Río Negro, excessive irrigation and poor drainage cause the water table to rise with dissolved salts that, combined with the texture of the soil, promote its salinization. Consequently, halophytes thrive, and both crop yields and the quality of the products decrease. This work aims to analyze the floristic diversity of halophytes in different crops and textural groups in the area. Vegetation surveys on salinized patches in different productive establishments were carried out. For each taxon, the importance value was calculated and was classified according to its geographical origin, habit, life form, and mechanism to resist salinity. The floristic comparison between environments was carried out using the ecological indices richness, diversity and evenness, and hierarchical grouping techniques. The floristic list presents 111 infrageneric taxa. The best-represented families are Poaceae, Asteraceae, and Chenopodiaceae. The 70.27 % of the taxa are pseudohalophytes, 17.11 % crinohalophytes, and 12.62 % euhalophytes. The “barda” and “media barda” soils have the highest ecological indices. The abandoned and forage crops present the highest values of diversity and equitability, while vine and abandoned crops, the highest values of specific richness. The floristic similarity values in the textural groups are low to medium, while in the crops, medium to high. The first floristic inventory of halophilic taxa in cultivated halomorphic soils for the region is presented, which provides useful information for adequate management of productive establishments.
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Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias - Instituto de Ciencias Naturales
2022
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| Online Access: | https://revistas.unal.edu.co/index.php/cal/article/view/87231 |
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Minué, Carlos Rogelio Gandullo, Ricardo Troncoso, Viviana Úrsula |
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Minué, Carlos Rogelio Gandullo, Ricardo Troncoso, Viviana Úrsula Floristic diversity of cultivated halomorphic soils of the Alto Valle de Río Negro (Argentina) |
| author_facet |
Minué, Carlos Rogelio Gandullo, Ricardo Troncoso, Viviana Úrsula |
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Minué, Carlos Rogelio |
| title |
Floristic diversity of cultivated halomorphic soils of the Alto Valle de Río Negro (Argentina) |
| title_short |
Floristic diversity of cultivated halomorphic soils of the Alto Valle de Río Negro (Argentina) |
| title_full |
Floristic diversity of cultivated halomorphic soils of the Alto Valle de Río Negro (Argentina) |
| title_fullStr |
Floristic diversity of cultivated halomorphic soils of the Alto Valle de Río Negro (Argentina) |
| title_full_unstemmed |
Floristic diversity of cultivated halomorphic soils of the Alto Valle de Río Negro (Argentina) |
| title_sort |
floristic diversity of cultivated halomorphic soils of the alto valle de río negro (argentina) |
| description |
In the Alto Valle de Río Negro, excessive irrigation and poor drainage cause the water table to rise with dissolved salts that, combined with the texture of the soil, promote its salinization. Consequently, halophytes thrive, and both crop yields and the quality of the products decrease. This work aims to analyze the floristic diversity of halophytes in different crops and textural groups in the area. Vegetation surveys on salinized patches in different productive establishments were carried out. For each taxon, the importance value was calculated and was classified according to its geographical origin, habit, life form, and mechanism to resist salinity. The floristic comparison between environments was carried out using the ecological indices richness, diversity and evenness, and hierarchical grouping techniques. The floristic list presents 111 infrageneric taxa. The best-represented families are Poaceae, Asteraceae, and Chenopodiaceae. The 70.27 % of the taxa are pseudohalophytes, 17.11 % crinohalophytes, and 12.62 % euhalophytes. The “barda” and “media barda” soils have the highest ecological indices. The abandoned and forage crops present the highest values of diversity and equitability, while vine and abandoned crops, the highest values of specific richness. The floristic similarity values in the textural groups are low to medium, while in the crops, medium to high. The first floristic inventory of halophilic taxa in cultivated halomorphic soils for the region is presented, which provides useful information for adequate management of productive establishments. |
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Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias - Instituto de Ciencias Naturales |
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2022 |
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https://revistas.unal.edu.co/index.php/cal/article/view/87231 |
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AT minuecarlosrogelio floristicdiversityofcultivatedhalomorphicsoilsofthealtovallederionegroargentina AT gandulloricardo floristicdiversityofcultivatedhalomorphicsoilsofthealtovallederionegroargentina AT troncosovivianaursula floristicdiversityofcultivatedhalomorphicsoilsofthealtovallederionegroargentina AT minuecarlosrogelio diversidadfloristicadesueloshalomorficoscultivadosdelaltovallederionegroargentina AT gandulloricardo diversidadfloristicadesueloshalomorficoscultivadosdelaltovallederionegroargentina AT troncosovivianaursula diversidadfloristicadesueloshalomorficoscultivadosdelaltovallederionegroargentina |
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| spelling |
oai:www.revistas.unal.edu.co:article-872312022-10-10T22:04:27Z Floristic diversity of cultivated halomorphic soils of the Alto Valle de Río Negro (Argentina) Diversidad florística de suelos halomórficos cultivados del Alto Valle de Río Negro (Argentina) Minué, Carlos Rogelio Gandullo, Ricardo Troncoso, Viviana Úrsula Cultivos agrícolas halófitos Patagonia salinización Agricultural crops halophytes Patagonia salinization In the Alto Valle de Río Negro, excessive irrigation and poor drainage cause the water table to rise with dissolved salts that, combined with the texture of the soil, promote its salinization. Consequently, halophytes thrive, and both crop yields and the quality of the products decrease. This work aims to analyze the floristic diversity of halophytes in different crops and textural groups in the area. Vegetation surveys on salinized patches in different productive establishments were carried out. For each taxon, the importance value was calculated and was classified according to its geographical origin, habit, life form, and mechanism to resist salinity. The floristic comparison between environments was carried out using the ecological indices richness, diversity and evenness, and hierarchical grouping techniques. The floristic list presents 111 infrageneric taxa. The best-represented families are Poaceae, Asteraceae, and Chenopodiaceae. The 70.27 % of the taxa are pseudohalophytes, 17.11 % crinohalophytes, and 12.62 % euhalophytes. The “barda” and “media barda” soils have the highest ecological indices. The abandoned and forage crops present the highest values of diversity and equitability, while vine and abandoned crops, the highest values of specific richness. The floristic similarity values in the textural groups are low to medium, while in the crops, medium to high. The first floristic inventory of halophilic taxa in cultivated halomorphic soils for the region is presented, which provides useful information for adequate management of productive establishments. En el Alto Valle de Río Negro, el riego excesivo y drenaje deficiente ocasionan el ascenso de la capa freática con sales disueltas que, combinados con la textura del suelo, promueven su salinización. Consecuentemente, prosperan halófitos y merman los rendimientos de los cultivos y la calidad de los productos. El objetivo del presente trabajo es analizar la diversidad florística de halófitos en diferentes cultivos y grupos texturales en el área. Se realizaron relevamientos de vegetación sobre parches salinizados en diferentes establecimientos productivos. Para cada taxón se calculó el valor de importancia y se lo clasificó según su origen geográfico, hábito, forma de vida y mecanismo para resistir la salinidad. La comparación florística entre ambientes se realizó mediante los índices ecológicos riqueza, diversidad y equitatividad, y técnicas de agrupamiento jerárquico. El listado florístico presenta 111 taxones infragenéricos. Las familias mejor representadas son Poaceae, Asteraceae y Chenopodiaceae. El 70,27 % de los taxones son pseudohalófitos, el 17,11 % crinohalófitos y el 12,62 % euhalófitos. Los suelos de barda y media barda tienen los índices ecológicos más altos. Los cultivos abandonados y forrajeros presentan los mayores valores de diversidad y equitatividad, mientras que los de vid y abandonados, mayor riqueza específica. Los valores de similitud florística en los grupos texturales son bajos a medios, mientras que, en los cultivos, medios a altos. Se presenta el primer inventario florístico de taxones halófilos en suelos halomórficos cultivados para la región que provee información útil para una gestión adecuada de los establecimientos productivos. Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias - Instituto de Ciencias Naturales 2022-03-07 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf application/pdf https://revistas.unal.edu.co/index.php/cal/article/view/87231 10.15446/caldasia.v44n1.87231 Caldasia; Vol. 44 No. 1 (2022); 95-107 Caldasia; Vol. 44 Núm. 1 (2022); 95-107 2357-3759 0366-5232 spa https://revistas.unal.edu.co/index.php/cal/article/view/87231/77837 https://revistas.unal.edu.co/index.php/cal/article/view/87231/80734 Derechos de autor 2021 Caldasia https://creativecommons.org/licenses/by/4.0 |