Éxito reproductivo del jabirú (Jabiru mycteria) en relación con factores climáticos y atributos espaciales
Fecha
2025-11
Autores
Carrillo Vega, Pablo
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Editor
Universidad Nacional, Costa Rica
Resumen
Este trabajo tuvo por objetivo determinar la relación entre el éxito reproductivo del jabirú (Jabiru mycteria) con la precipitación, la temperatura, y la velocidad del viento, así como identificar atributos espaciales de los sitios de anidación de esta especie en Costa Rica entre 2009 y 2024. Lo anterior se realizó mediante el ajuste de modelos de regresión lineal entre la productividad anual de pichones de jabirú y las variables climáticas mencionadas; en tanto, la identificación de los atributos espaciales de los sitios de anidación se realizó por medio del análisis de vecino más cercano, distancia a humedales y la determinación de los usos de suelo donde se encontraban los nidos según las capas de cobertura de la tierra del 2010, 2015 y 2020. Los resultados obtenidos indican que los nidos de jabirú están agrupados en la vertiente Norte y Pacífico del país, a 1.3 km de humedales, y construidos en árboles situados, principalmente, en áreas con cobertura forestal y en potreros. Además, se encontró que la productividad anual de pichones de jabirú mejora con el aumento de: la precipitación del segundo trimestre, la temperatura mínima del cuarto trimestre del año reproductivo de la especie y de la velocidad máxima del viento durante la época seca, la cual se extiende de diciembre abril en Costa Rica. Por lo anterior se concluye que existe una relación entre el éxito reproductivo del jabirú, representado por la productividad anual de pichones, y la precipitación, temperatura y velocidad del viento, lo cual podrá servir de insumo para estimar el impacto de la variabilidad climática en la tendencia poblacional de la especie en Costa Rica.
The objective of this study was to determine the relationship between the reproductive success of the jabiru (Jabiru mycteria) and precipitation, temperature, and wind speed, as well as to identify spatial attributes of the species’ nesting sites in Costa Rica between 2009 and 2024. This was achieved through the fitting of linear regression models, in which the annual productivity of the jabiru was analyzed as a function of the aforementioned climatic variables. In addition, the identification of spatial attributes of nesting sites was carried out through nearest neighbor analysis, distance to wetlands, and the determination of land use types according to the 2010, 2015, and 2020 land use layers. The results obtained indicate that jabiru nests are clustered on the Northern and Pacific slopes of the country, at an average distance of 1.3 km from wetlands, and built in trees located mainly in areas with forest cover and pastures. In addition, it was found that the annual productivity of jabiru chicks improves with increases in precipitation at the second quarter, the minimum temperature in the fourth quarter of the species' breeding season, and the maximum wind speed during the dry season, which runs from December to April in Costa Rica. Therefore, it is concluded that there is a relationship between the reproductive success of the jabiru, represented by the annual productivity of chicks, and precipitation, temperature, and wind speed, which may serve as input for estimating the impact of climate variability on the population trend of the species in Costa Rica.
The objective of this study was to determine the relationship between the reproductive success of the jabiru (Jabiru mycteria) and precipitation, temperature, and wind speed, as well as to identify spatial attributes of the species’ nesting sites in Costa Rica between 2009 and 2024. This was achieved through the fitting of linear regression models, in which the annual productivity of the jabiru was analyzed as a function of the aforementioned climatic variables. In addition, the identification of spatial attributes of nesting sites was carried out through nearest neighbor analysis, distance to wetlands, and the determination of land use types according to the 2010, 2015, and 2020 land use layers. The results obtained indicate that jabiru nests are clustered on the Northern and Pacific slopes of the country, at an average distance of 1.3 km from wetlands, and built in trees located mainly in areas with forest cover and pastures. In addition, it was found that the annual productivity of jabiru chicks improves with increases in precipitation at the second quarter, the minimum temperature in the fourth quarter of the species' breeding season, and the maximum wind speed during the dry season, which runs from December to April in Costa Rica. Therefore, it is concluded that there is a relationship between the reproductive success of the jabiru, represented by the annual productivity of chicks, and precipitation, temperature, and wind speed, which may serve as input for estimating the impact of climate variability on the population trend of the species in Costa Rica.
Descripción
Maestría profesional en conservación de vida silvestre, modalidad: proyecto.
Palabras clave
PRECIPITACIONES, PRECIPITATION, AVES, BIRDS, NESTS, NIDOS, TEMPERATURA, TEMPERATURE, REPRODUCCIÓN ANIMAL, ANIMAL REPRODUCTION, AVES ACUÁTICAS, WATERBIRDS
