Parámetros fisicoquímicos y su influencia en la estructura de la comunidad de macroinvertebrados bentónicos de quebradas del área de influencia del eje carretero Iquitos, Nauta, Loreto, Perú, 2019
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Universidad Nacional de la Amazonía Peruana
Abstract
El objetivo de este estudio fue evaluar las características fisicoquímicas del agua de
las quebradas del área de influencia del eje carretero Iquitos-Nauta en época de
avenida y estiaje; comparar los parámetros fisicoquímicos con el Estándar de Calidad
Ambiental para Agua DECRETO SUPREMO N°004-2017-MINAM; estimar la
abundancia, dominancia y diversidad de macroinvertebrados bentónicos y evaluar la
influencia de los parámetros fisicoquímicos en la estructura de la comunidad de
macroinvertebrados bentónicos.
Se muestrearon un total de 10 quebradas en época de avenida y estiaje (mayo y
setiembre 2019). Se evaluaron las características fisicoquímicas del agua de las
quebradas y se comparó con el ECA-Agua. Por las 10 quebradas muestreadas se
colecto un total de 5028 macroinvertebrados; 2569 en época de avenida y 2459 en
época de estiaje. Tanto en época de avenida como en estiaje el taxón más abundante
fue Chironomidae. Se registró mayor dominancia de familias en época de avenida
0.72 (Simpson 1-D), siendo Chironomidae la taxa más dominante en ambas épocas
de colecta. Las quebradas Habanillo y Paujil registraron mayor diversidad en época
de avenida, y Lindero y Paujil en época de estiaje. El análisis de correlación múltiple
(Coeficiente de correlación de Spearman) reporto una mayor correlación entre la
dureza, cloro, conductividad y alcalinidad con algunos grupos taxonómicos; los
demás parámetros evaluados no presentaron ninguna correlación con los grupos
taxonómicos. (Community Analysis Package-4 (CAP-4)).
The objective of this study was to evaluate the physicochemical characteristics of the water in the streams of the area of influence of the Iquitos-Nauta highway in the flood and low water season; compare the physicochemical parameters with the Standard of Environmental Quality for Water SUPREME DECREE N ° 004-2017-MINAM; to estimate the abundance, dominance and diversity of benthic macroinvertebrates and to evaluate the influence of the physicochemical parameters on the structure of the benthic macroinvertebrate community. A total of 10 streams were sampled in flood and dry season (May and September 2019). The physicochemical characteristics of the stream water were evaluated and compared with the ECA-Water. From the 10 streams sampled, a total of 5028 macroinvertebrates were collected; 2569 in the avenue season and 2459 in the dry season. Both in flood and dry season, the most abundant taxon was Chironomidae. There was a greater dominance of families in the 0.72 flood season (Simpson 1-D), with Chironomidae being the most dominant taxa in both collection seasons. The Habanillo and Paujil streams registered greater diversity in the flood season, and Lindero and Paujil in the dry season. The multiple correlation analysis (Spearman's correlation coefficient) reported a higher correlation between hardness, chlorine, conductivity and alkalinity with some taxonomic groups; the other parameters evaluated did not show any correlation with the taxonomic groups. (Community Analysis Package-4 (CAP-4)).
The objective of this study was to evaluate the physicochemical characteristics of the water in the streams of the area of influence of the Iquitos-Nauta highway in the flood and low water season; compare the physicochemical parameters with the Standard of Environmental Quality for Water SUPREME DECREE N ° 004-2017-MINAM; to estimate the abundance, dominance and diversity of benthic macroinvertebrates and to evaluate the influence of the physicochemical parameters on the structure of the benthic macroinvertebrate community. A total of 10 streams were sampled in flood and dry season (May and September 2019). The physicochemical characteristics of the stream water were evaluated and compared with the ECA-Water. From the 10 streams sampled, a total of 5028 macroinvertebrates were collected; 2569 in the avenue season and 2459 in the dry season. Both in flood and dry season, the most abundant taxon was Chironomidae. There was a greater dominance of families in the 0.72 flood season (Simpson 1-D), with Chironomidae being the most dominant taxa in both collection seasons. The Habanillo and Paujil streams registered greater diversity in the flood season, and Lindero and Paujil in the dry season. The multiple correlation analysis (Spearman's correlation coefficient) reported a higher correlation between hardness, chlorine, conductivity and alkalinity with some taxonomic groups; the other parameters evaluated did not show any correlation with the taxonomic groups. (Community Analysis Package-4 (CAP-4)).
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Propiedades físico-químicas, Lagos, Estiaje, Invertebrados, Contaminación
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