2016
DOI: 10.15517/rbt.v65i1.23233
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La descomposición de la hojarasca como herramienta para evaluar la integridad funcional de ríos altoandinos del sur del Ecuador

Abstract: Leaf-litter breakdown as a tool to assess the functional integrity of high Andean streams of Southern Ecuador. The ecological condition of tropical Andean rivers are threatened by many human activities including changes in land use and cover in watersheds. Current protocols diagnose the structural condition of streams but not their function. In this study we proposed an assessment tool using the leaf-litter breakdown as a measure of the functional condition and health of high Andean streams in Southern Ecuador… Show more

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Cited by 8 publications
(8 citation statements)
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“…The decomposition of leaf litter is the set of physical and chemical processes by which its basic chemical constituents are removed (Rincón et al, 2017). It is also the most important process of nutrient cycling in any ecosystem (Wang et al, 2008;Castellanos and Léon, 2011), because through the decomposition of leaf litter, nutrients are again available to plants.…”
mentioning
confidence: 99%
“…The decomposition of leaf litter is the set of physical and chemical processes by which its basic chemical constituents are removed (Rincón et al, 2017). It is also the most important process of nutrient cycling in any ecosystem (Wang et al, 2008;Castellanos and Léon, 2011), because through the decomposition of leaf litter, nutrients are again available to plants.…”
mentioning
confidence: 99%
“…It is important to denote other factors that intervene in the components of decomposition. The forest quality is highlighted as a factor that determines the importance of decomposers by the K g /K f quotient, and in Andean rivers with high forest quality, the shredders are determined to be important to the decomposition rates [48], while the importance of microorganisms increases in impacted rivers [49,50]. This is one of the limitations of our study.…”
Section: Discussionmentioning
confidence: 77%
“…Nonetheless, the microbial activity in rivers is one of the most important factors in decomposition rates, and is especially influenced by land use changes [46]. However, the agrochemicals input by runoff cause the eutrophication process or water chemical changes, the microbial activity is altered and the decomposition rate could be decreased [31,48]. It is important to denote other factors that intervene in the components of decomposition.…”
Section: Discussionmentioning
confidence: 99%
“…La productividad del agroecosistema depende de la materia orgánica, y para los sistemas silvopastoriles, las hojas de los árboles adicionan materia orgánica, concordando con lo que menciona Camargo (2018), y que posteriormente es descompuesta por la fauna edáfica, coincidiendo con Castro (2017) en su investigación sobre fauna edáfica. La presencia de los árboles con mezcla forrajera hace propicio el hábitat para organismos biorreguladores, fitófagos y comunidades bacterianas, en proporciones equilibradas permite potenciar la acción biótica del suelo, mantener las relaciones simbióticas y la estabilidad óptima del hábitat (Rincón et al, 2017;Vega et al, 2014). La condición climática es un aspecto básico para el sostenimiento de la biota del suelo (Juárez-Ramón y Fragoso, 2014) y la presencia de los árboles en un agroecosistema hace que se creen microclimas y la retención del agua en épocas secas sea significante, tal como lo manifiesta Altamirano (2013).…”
Section: Criterio De Decisiónunclassified