Christian Villamarín

Christian Villamarín
Universidad de Las Américas | UDLA · Dirección General de Investigación UDLA-FICA

Ecology PhD

About

15
Publications
9,155
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
107
Citations
Citations since 2016
10 Research Items
85 Citations
2016201720182019202020212022051015
2016201720182019202020212022051015
2016201720182019202020212022051015
2016201720182019202020212022051015
Additional affiliations
January 2014 - November 2017
Universidad de Las Américas
Position
  • Professor
January 2007 - February 2014
University of Barcelona
Position
  • Investigador

Publications

Publications (15)
Article
Full-text available
Para comprender la variabilidad física, química e hidromorfológica de los ríos en la zona altoandina tropical (sobre los 2000 msnm) se muestrearon 123 ríos de ocho cuencas hidrográficas de Ecuador y Perú, seleccionados según criterios de distribución en latitud y altitud, así como el grado de alteración antrópica. Los muestreos se realizaron entre...
Article
The distribution of the genus Barbadocladius Cranston & Krosch (Diptera: Chironomidae), previously reported from Chile to Bolivia, has extended northwards. Larvae, pupae and pupal exuviae of this genus have been found in the high mountain tropical streams of Peru to 9°22′56″, but are restricted to very high altitude streams (altitudes over 3,278 m...
Article
Full-text available
The main objective of this study was to develop a highland Andean streams ecological assessment tool for managers to determine the biological quality in this broad area of South America. Sampling was conducted during the dry season at 123 sites in eight watersheds of high Andean streams from south of Peru to North of Ecuador. The sites were at elev...
Article
Full-text available
Andean streams are becoming increasingly impacted by agricultural activities. However, the potential effects of pesticides on their aquatic biodiversity remain unassessed. In order to address this knowledge gap, we conducted an experiment over 37 days in microcosms to assess the effect of two pesticides commonly used in Ecuador (Engeo and Chlorpyri...
Article
Full-text available
Andean rivers support an amazing biodiversity and provide important environmental services for Andean landscapes like water for agriculture and human consumption. Urban areas in Andean countries have grown at an accelerated rate in the last decades. As a consequence, a lack of wastewater treatment and riparian preservation have threatened these str...
Article
Full-text available
Chironomids show a wide distribution and can occupy several habitats due to their high adaptive capacity in different freshwater environments. The genus Polypedilum is found along a wide elevational and environmental gradient in the neotropics, and its genetic variability could help to elucidate factors determining its distribution and tolerance to...
Article
Full-text available
Introduction: Chironomids (Diptera: Chironomidae) are the most globally diverse and widely distributed aquatic insects. Despite their prevalence in lotic systems, little is known about the ecology and diversity of tropical species relative to other aquatic insect taxa, particularly at the immature stages. Objective: Characterize chironomid diversit...
Book
Full-text available
Los estresores ambientales tienen efectos medibles en el ecosistema fluvial y sus organismos, por lo que estos últimos son de interés para estimar la integridad o el estado ecológico de los ríos. En Suramérica los métodos para la evaluación de los ríos varían entre países, con lo cual es necesario conocer cuáles receptores biológicos y ambientales...
Article
Full-text available
Macroinvertebrate diversity patterns in tropical highland Andean rivers We studied the macroinvertebrate diversity patterns at 44 sites in tropical highland streams (from 2600 to 4800 m a.s.l. and from northern Ecuador to southern Peru, South America) within six watersheds. The aquatic macroinvertebratealpha (α) diversity tended to decrease with in...
Article
Full-text available
The genus Oliveiriella (Chironomidae, Orthocladiinae) was erected by Wiedenbrug & Fittkau (1997). The adults have characteristic black spots on their wings and other characteristics similar to the genus Cricotopus. Pupal skins are very characteristic with strong short spines in the anal lobe instead of setae, while larvae are distinguishable by the...
Conference Paper
Full-text available
Se presenta un análisis de distribución y diversidad de quironómidos (DIPTERA: Chironomidae) a nivel de género. Se muestrearon ríos pertenecientes al Distrito Metropolitano de Quito (DMQ) en un rango altitudinal comprendido entre los 1000 y 3633 m de altitud, realizado en 37 sitios preestablecidos, los que no presentan alteración antrópica evidente...

Network

Cited By

Projects

Projects (2)
Project
Characterize the diversity and distribution of Ecuadorian Trichoptera
Project
El Oro province has a very wide watershed net, that has not been sampled yet, so we are doing surveys and monitoring to stablish the water quality and diversity of macroinvertebrate from the rivers of El Oro Province, Ecuador.