Title
Variability of the water quality characterizing high andean lagoons for tourist use evaluated through multivariate statistical methods, Junín, Peru
Date Issued
01 January 2019
Access level
open access
Resource Type
journal article
Publisher(s)
Polish Society of Ecological Engineering (PTIE)
Abstract
The spatial-temporal variability characterizing the water quality of high Andean lagoons for tourist use was evaluated using multivariate statistical methods during 2017 and 2018. The water samples were collected from 14 sampling sites, with three replicates each. The water quality indicators determined were: pH, temperature, DO, COD, BOD5, P, N, Fe, Cu, Cr, Cd, Pb, Zn and chlorophyll-a. The flat cluster analysis (k R cluster) according to Ward's algorithm showed six significantly differentiated groups (α=0.01). In turn, the real similarity profile (SIMPROF) moves markedly away from the obtained low permutation with a large excess of Euclidean similarity with a Pi value of 0.627. The PCA showed that the first two components recommended by the sedimentation analysis (Scree test) indicated 61.52% of the total variation of the observations. According to the Spearman range correlation selection criterion, the variables that best interpret the sample distributions are COD, DTS, P, Cd and Zn with a correlation of 0.893, the DTS being the most important variable with a correlation value of 0.795. The PERMANOVA analysis according to the flat cluster factor indicated that at least one of the groups is different from the others in relation to the levels of physicochemical characteristics studied. Therefore, all the configured groups are statistically different, demonstrating that each lagoon is different in relation to its physicochemical indicators, according to the season in which it is found.
Start page
1
End page
11
Volume
20
Issue
8
Language
English
OCDE Knowledge area
Ingeniería ambiental y geológica
Scopus EID
2-s2.0-85085128812
Source
Journal of Ecological Engineering
ISSN of the container
2299-8993
Sponsor(s)
The authors express their gratitude to the General Research Institute of the Universidad Nacional del Centro del Peru for the financing of the study, to the Water Research Laboratory for allowing us to make use of the equipment and materials for this study.
Sources of information: Directorio de Producción Científica Scopus