Water quality of an Ecuadorian Andean stream with the use of aquatic macroinvertebrates.

 

Αποθηκεύτηκε σε:
Λεπτομέρειες βιβλιογραφικής εγγραφής
Συγγραφείς: Liñero Arana, Ildefonso, Balarezzo, Víctor H., Eraso, Héctor, Pacheco, Francisco, Ramos, Carolina E, Muzo, Ruth G, Calva, Carla J
Μορφή: artículo original
Κατάσταση:Versión publicada
Ημερομηνία έκδοσης:2016
Περιγραφή:Ecuador is crossed by a network of rivers that originate mainly in the high Andean reliefs and pour into two basins: Amazon and Pacific. Many suffer from severe human impact. The main objective of the present study was to assess water quality of Mojarrero stream using biotic indices (BMWP/Col. and Shannon-Wiener index) as a tool to evaluate ecosystem health. During June, August and October 2014, bottom samples were taken at three stations. Each month and season three replicates of benthic aquatic invertebrates were taken on sandy-stony bottoms with a 0,3 mm mesh “D-net”. The fauna was represented by eleven orders and 29 families. The most abundant order was Coleoptera, representing 42,70% of total collected organisms, followed by Diptera (19,01%) and Ephemeroptera (11,38%). The most abundant family was Elmidae, with 568 individuals, (37,37% of total organisms), followed by Chironomidae (11,38%) and Baetidae (7,24%). Shannon diversity values ranged between 0,98 bits/ind. (June, EST. 2) and 2,23 bits/ind. (October, Est 1). The BMWP/Col. index values indicate that the river has a good environmental health on the high and low sections. The median section has some pollution, particularly during August and October.
Χώρα:Portal de Revistas UNED
Ίδρυμα:Universidad Estatal a Distancia
Repositorio:Portal de Revistas UNED
Γλώσσα:Español
OAI Identifier:oai:revistas.investiga.uned.ac.cr:article/1225
Διαθέσιμο Online:https://revistas.uned.ac.cr/index.php/cuadernos/article/view/1225
Access Level:acceso abierto
Λέξη-Κλειδί :freshwater macro invertebrates
stream quality
IBMWP/Col
Andean stream
Ecuador.
macroinvertebrados de agua dulce
calidad de corriente
IBMWP / Col
corriente Andina
Ecuador