Hojarasca como indicador de la producción primaria y su relación con variables climáticas en los bosques ribereños del Corredor Biológico Montes del Aguacate y el Corredor Biológico Lago Arenal Tenorio, Costa Rica.
Fecha
2024
Autores
Vásquez Cascante, Karen
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Editor
Universidad Nacional (Costa Rica)
Resumen
Resumen. La hojarasca se refiere a aquel material depositado sobre la superficie del suelo que está compuesto por plantas y sus órganos muertos, como corteza, hojas, ramas, inflorescencias, frutos, semillas, epífitas y otros materiales no identificados. La cantidad de hojarasca caída por periodo de tiempo se le conoce como producción de biomasa caída y es utilizada como una medida de la productividad primaria neta, que es fácil de medir y su variación inter e intra anual permite comparar diferentes ecosistemas forestales. El muestreo se realizó en siete sitios dentro del Corredor Biológico Montes del Aguacate y cuatro en el Corredor Biológico Lago Arenal Tenorio, los cuales se sitúan en propiedades privadas, poseen cobertura boscosa y cuerpos de agua. Se analizaron las variaciones temporales de la hojarasca capturada y se relacionó con las variables climáticas de temperatura y precipitación. Los patrones de la hojarasca mostraron similitudes con estudios anteriores, la cual disminuye con la precipitación y aumenta con la temperatura; sin embargo, la hojarasca no es homogénea a lo largo del año lo que refleja la heterogeneidad del dosel del bosque, por lo que puede estar relacionado con las variaciones espaciales en el estado de sucesión del bosque y por los patrones de degradación, uso y presiones antropogénicas sobre el bosque. El conocimiento sobre los patrones de la caída de hojarasca y su relación con la productividad primaria pueden servir de base para fundamentar la implementación de estrategias de manejo y conservación de los bosques situados dentro de los Corredores Biológicos Montes del Aguacate y Lago Arenal Tenorio.
Abstract. Litter refers to the material deposited on the soil surface that is composed of plants and their dead organs, such as bark, leaves, branches, inflorescences, fruits, seeds, epiphytes and other unidentified materials. The amount of fallen litter per period of time is known as fallen biomass production and is used as a measure of net primary productivity, which is easy to measure and its inter- and intra-annual variation allows comparing different forest ecosystems. Sampling was carried out in seven sites within the Montes del Aguacate Biological Corridor and four in the Arenal Tenorio Lake Biological Corridor, which are located in private properties, have forest cover and water bodies. The temporal variations of the captured leaf litter were analyzed and related to the climatic variables of temperature and precipitation. Litterfall patterns showed similarities with previous studies, which decreases with precipitation and increases with temperature; however, litterfall is not homogeneous throughout the year, reflecting the heterogeneity of the forest canopy, which may be related to spatial variations in the state of forest succession and patterns of degradation, use and anthropogenic pressures on the forest. Knowledge about the patterns of litterfall and its relationship with primary productivity can serve as a basis for the implementation of management and conservation strategies for the forests located within the Montes del Aguacate and Lago Arenal Tenorio Biological Corridors.
Abstract. Litter refers to the material deposited on the soil surface that is composed of plants and their dead organs, such as bark, leaves, branches, inflorescences, fruits, seeds, epiphytes and other unidentified materials. The amount of fallen litter per period of time is known as fallen biomass production and is used as a measure of net primary productivity, which is easy to measure and its inter- and intra-annual variation allows comparing different forest ecosystems. Sampling was carried out in seven sites within the Montes del Aguacate Biological Corridor and four in the Arenal Tenorio Lake Biological Corridor, which are located in private properties, have forest cover and water bodies. The temporal variations of the captured leaf litter were analyzed and related to the climatic variables of temperature and precipitation. Litterfall patterns showed similarities with previous studies, which decreases with precipitation and increases with temperature; however, litterfall is not homogeneous throughout the year, reflecting the heterogeneity of the forest canopy, which may be related to spatial variations in the state of forest succession and patterns of degradation, use and anthropogenic pressures on the forest. Knowledge about the patterns of litterfall and its relationship with primary productivity can serve as a basis for the implementation of management and conservation strategies for the forests located within the Montes del Aguacate and Lago Arenal Tenorio Biological Corridors.
Descripción
Vásquez Cascante, K. (2024). Hojarasca como indicador de la producción primaria y su relación con variables climáticas en los bosques ribereños del Corredor Biológico Montes del Aguacate y el Corredor Biológico Lago Arenal Tenorio, Costa Rica. [Tesis de Licenciatura]. Universidad Nacional, Heredia, Costa Rica.
Palabras clave
HOJAS, BIOMASA, NUTRIENTES, BOSQUES, CORREDOR BIOLÓGICO, COSTA RICA, SHEETS, BIOMASS, BIOLOGICAL CORRIDOR, FORESTS