Threat or opportunity? fire response of Gaillardia cabrerae, an endemic species from the south-center of La Pampa province (Argentina)
Fires in northern Patagonia are very frequent events, especially in summer seasons, affecting a large percentage of the area each year. Its consequences on biodiversity are variable according to the intensity, permanence and environments that are affected. Fire in ecosystems appears with a dual behavior, as a catastrophic disturbance and as an agent capable of opening environments and allowing the colonization of new sites by rare species, that are considered poor competitors. Through the analysis of measurements in marked plants in the pre-fire season in the Lihué Calel National Park, it was possible to evaluate the response to this phenomenon of Gaillardia cabrerae Covas (Asteraceae), a rarity in the south-central of La Pampa province. The resprouting capacity allowed the recovery of the affected populations and the production of flower heads was recorded in a greater number than in the pre-fire season. These results suggest a positive response of the species to these particular events at the end of 2003. However, given the intrinsic vulnerability of species with such a limited distribution, fire continues to be a high-impact factor for populations and their effect remains uncertain. Considering its rare condition, it is necessary to take precautionary measures to ensure the survival of the species in a context of climate change that defines a near-future scenario characterized by a high degree of unpredictability.
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rev-semiarida-article76322024-04-08T16:19:52Z Threat or opportunity? fire response of Gaillardia cabrerae, an endemic species from the south-center of La Pampa province (Argentina) ¿Amenaza u oportunidad? Respuesta al fuego de Gaillardia cabrerae, una especie endémica del centro sur de La Pampa (Argentina) Beinticinco, Laura Prina, Anibal Galmes, Maximiliano Adrián Gaillardia cabrerae rarity fire response Lihue Calel National Park Patagonia Gaillardia cabrerae rareza respuesta al fuego Parque Nacional Lihué Calel Patagonia Fires in northern Patagonia are very frequent events, especially in summer seasons, affecting a large percentage of the area each year. Its consequences on biodiversity are variable according to the intensity, permanence and environments that are affected. Fire in ecosystems appears with a dual behavior, as a catastrophic disturbance and as an agent capable of opening environments and allowing the colonization of new sites by rare species, that are considered poor competitors. Through the analysis of measurements in marked plants in the pre-fire season in the Lihué Calel National Park, it was possible to evaluate the response to this phenomenon of Gaillardia cabrerae Covas (Asteraceae), a rarity in the south-central of La Pampa province. The resprouting capacity allowed the recovery of the affected populations and the production of flower heads was recorded in a greater number than in the pre-fire season. These results suggest a positive response of the species to these particular events at the end of 2003. However, given the intrinsic vulnerability of species with such a limited distribution, fire continues to be a high-impact factor for populations and their effect remains uncertain. Considering its rare condition, it is necessary to take precautionary measures to ensure the survival of the species in a context of climate change that defines a near-future scenario characterized by a high degree of unpredictability. Los incendios en el norte de Patagonia son eventos muy frecuentes sobre todo en los meses de verano, que afectan un gran porcentaje del área cada año. Sus consecuencias sobre la biodiversidad son variables de acuerdo con la intensidad, permanencia y ambientes a los que alcance. El fuego se presenta en los ecosistemas con un comportamiento dual, como un disturbio catastrófico y como agente capaz de abrir los ambientes y permitir la colonización de nuevos sitios por parte de especies raras, consideradas malas competidoras. A través del análisis de poblaciones de plantas marcadas en el Parque Nacional Lihué Calel fue posible evaluar la respuesta al fuego de Gaillardia cabrerae Covas (Asteraceae), especie rara del centro sur de La Pampa. La capacidad de rebrote permitió la recuperación de las poblaciones afectadas y la producción de capítulos florales fue mayor que en la temporada pre-fuego. Estos resultados sugieren una respuesta positiva de la especie frente a estos eventos particulares de fines del año 2003. Sin embargo, dada la vulnerabilidad intrínseca que presentan las especies con distribución tan acotada, el fuego sigue siendo un factor de alto impacto para las poblaciones y de efecto incierto. Debido a su condición de rareza, es necesario tomar medidas precautorias para asegurar la supervivencia de la especie en un contexto de cambio climático que define un escenario en el futuro cercano con alto grado de imprevisibilidad. Facultad de Agronomía 2024-04-08 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf text/html https://cerac.unlpam.edu.ar/index.php/semiarida/article/view/7632 10.19137/semiarida.2024(1).35-45 SEMIÁRIDA; Vol. 34 Núm. 1 (2024); 35-45 2408-4077 2362-4337 spa https://cerac.unlpam.edu.ar/index.php/semiarida/article/view/7632/9151 https://cerac.unlpam.edu.ar/index.php/semiarida/article/view/7632/9152 Derechos de autor 2024 Laura Beinticinco, Anibal Prina, Maximiliano Adrián Galmes |
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| author |
Beinticinco, Laura Prina, Anibal Galmes, Maximiliano Adrián |
| spellingShingle |
Beinticinco, Laura Prina, Anibal Galmes, Maximiliano Adrián Threat or opportunity? fire response of Gaillardia cabrerae, an endemic species from the south-center of La Pampa province (Argentina) |
| author_facet |
Beinticinco, Laura Prina, Anibal Galmes, Maximiliano Adrián |
| author_sort |
Beinticinco, Laura |
| title |
Threat or opportunity? fire response of Gaillardia cabrerae, an endemic species from the south-center of La Pampa province (Argentina) |
| title_short |
Threat or opportunity? fire response of Gaillardia cabrerae, an endemic species from the south-center of La Pampa province (Argentina) |
| title_full |
Threat or opportunity? fire response of Gaillardia cabrerae, an endemic species from the south-center of La Pampa province (Argentina) |
| title_fullStr |
Threat or opportunity? fire response of Gaillardia cabrerae, an endemic species from the south-center of La Pampa province (Argentina) |
| title_full_unstemmed |
Threat or opportunity? fire response of Gaillardia cabrerae, an endemic species from the south-center of La Pampa province (Argentina) |
| title_sort |
threat or opportunity? fire response of gaillardia cabrerae, an endemic species from the south-center of la pampa province (argentina) |
| description |
Fires in northern Patagonia are very frequent events, especially in summer seasons, affecting a large percentage of the area each year. Its consequences on biodiversity are variable according to the intensity, permanence and environments that are affected. Fire in ecosystems appears with a dual behavior, as a catastrophic disturbance and as an agent capable of opening environments and allowing the colonization of new sites by rare species, that are considered poor competitors. Through the analysis of measurements in marked plants in the pre-fire season in the Lihué Calel National Park, it was possible to evaluate the response to this phenomenon of Gaillardia cabrerae Covas (Asteraceae), a rarity in the south-central of La Pampa province. The resprouting capacity allowed the recovery of the affected populations and the production of flower heads was recorded in a greater number than in the pre-fire season. These results suggest a positive response of the species to these particular events at the end of 2003. However, given the intrinsic vulnerability of species with such a limited distribution, fire continues to be a high-impact factor for populations and their effect remains uncertain. Considering its rare condition, it is necessary to take precautionary measures to ensure the survival of the species in a context of climate change that defines a near-future scenario characterized by a high degree of unpredictability. |
| publisher |
Facultad de Agronomía |
| publishDate |
2024 |
| url |
https://cerac.unlpam.edu.ar/index.php/semiarida/article/view/7632 |
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