Hydrological influences on aquatic communities at the mesohabitat scale in high Andean streams of southern Ecuador

This study assessed the effects of hydrological events on aquatic communities at the mesohabitat scale (pool, run, and riffle) in the high Andean region. Four headwater sites located in the Zhurucay microcatchment (southern Ecuador), with elevations higher than 3,500 m, were selected and monitored c...

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Main Authors: Vimos Lojano, Diego Jose, Martínez Capel, Francisco, Hampel, Henietta, Vazquez Zambrano, Raul Fernando
Format: info:eu-repo/semantics/ARTÍCULO
Published: 2019
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Online Access:https://onlinelibrary.wiley.com/doi/pdf/10.1002/eco.2033#accessDenialLayout
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spelling oai:localhost:123456789-318022019-03-12T09:18:34Z Hydrological influences on aquatic communities at the mesohabitat scale in high Andean streams of southern Ecuador Vimos Lojano, Diego Jose Martínez Capel, Francisco Hampel, Henietta Vazquez Zambrano, Raul Fernando ANDEAN STREAMS ECOHYDROLOGY ECOLOGICAL RESPONSES HYDROLOGICAL INDICES MACROINVERTEBRATES MESOHABITAT This study assessed the effects of hydrological events on aquatic communities at the mesohabitat scale (pool, run, and riffle) in the high Andean region. Four headwater sites located in the Zhurucay microcatchment (southern Ecuador), with elevations higher than 3,500 m, were selected and monitored considering in each site a 50 ]m ]long reach and within each reach five cross sections. In each of these reaches, 19 sampling campaigns were conducted in the period December 2011.October 2013, collecting macroinvertebrates and physical characteristics. A total of 27 hydrological indices were calculated using the daily flow rate as input. Large peak flow, small peak flow, and low flow (LF) events were defined based on discharge thresholds. Multivariate statistics showed that 14 hydrological indices were significantly related to the aquatic community. Further, the study revealed that (a) peak events produced stronger effects on communities than LF events, (b) the observed effects of LF events were weaker than those encountered in other latitudes, and (c) local benthic communities have more resilience than similar communities studied in other latitudes. This study assessed the effects of hydrological events on aquatic communities at the mesohabitat scale (pool, run, and riffle) in the high Andean region. Four headwater sites located in the Zhurucay microcatchment (southern Ecuador), with elevations higher than 3,500 m, were selected and monitored considering in each site a 50 ]m ]long reach and within each reach five cross sections. In each of these reaches, 19 sampling campaigns were conducted in the period December 2011.October 2013, collecting macroinvertebrates and physical characteristics. A total of 27 hydrological indices were calculated using the daily flow rate as input. Large peak flow, small peak flow, and low flow (LF) events were defined based on discharge thresholds. Multivariate statistics showed that 14 hydrological indices were significantly related to the aquatic community. Further, the study revealed that (a) peak events produced stronger effects on communities than LF events, (b) the observed effects of LF events were weaker than those encountered in other latitudes, and (c) local benthic communities have more resilience than similar communities studied in other latitudes. 2019-01-18T18:03:02Z 2019-01-18T18:03:02Z 2019 info:eu-repo/semantics/ARTÍCULO 1936-0584 https://onlinelibrary.wiley.com/doi/pdf/10.1002/eco.2033#accessDenialLayout 10.1002/eco.2033 es_ES instname:Universidad de Cuenca reponame:Repositorio Digital de la Universidad de Cuenca info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/3.0/ec/ Ecohydrology info:eu-repo/semantics/Versión publicada
institution UCUENCA
collection Repositorio UCUENCA
universidades UCUENCA
language
format info:eu-repo/semantics/ARTÍCULO
topic ANDEAN STREAMS
ECOHYDROLOGY
ECOLOGICAL RESPONSES
HYDROLOGICAL INDICES
MACROINVERTEBRATES
MESOHABITAT
spellingShingle ANDEAN STREAMS
ECOHYDROLOGY
ECOLOGICAL RESPONSES
HYDROLOGICAL INDICES
MACROINVERTEBRATES
MESOHABITAT
Vimos Lojano, Diego Jose
Martínez Capel, Francisco
Hampel, Henietta
Vazquez Zambrano, Raul Fernando
Hydrological influences on aquatic communities at the mesohabitat scale in high Andean streams of southern Ecuador
description This study assessed the effects of hydrological events on aquatic communities at the mesohabitat scale (pool, run, and riffle) in the high Andean region. Four headwater sites located in the Zhurucay microcatchment (southern Ecuador), with elevations higher than 3,500 m, were selected and monitored considering in each site a 50 ]m ]long reach and within each reach five cross sections. In each of these reaches, 19 sampling campaigns were conducted in the period December 2011.October 2013, collecting macroinvertebrates and physical characteristics. A total of 27 hydrological indices were calculated using the daily flow rate as input. Large peak flow, small peak flow, and low flow (LF) events were defined based on discharge thresholds. Multivariate statistics showed that 14 hydrological indices were significantly related to the aquatic community. Further, the study revealed that (a) peak events produced stronger effects on communities than LF events, (b) the observed effects of LF events were weaker than those encountered in other latitudes, and (c) local benthic communities have more resilience than similar communities studied in other latitudes.
author Vimos Lojano, Diego Jose
Martínez Capel, Francisco
Hampel, Henietta
Vazquez Zambrano, Raul Fernando
author_facet Vimos Lojano, Diego Jose
Martínez Capel, Francisco
Hampel, Henietta
Vazquez Zambrano, Raul Fernando
author_sort Vimos Lojano, Diego Jose
title Hydrological influences on aquatic communities at the mesohabitat scale in high Andean streams of southern Ecuador
title_short Hydrological influences on aquatic communities at the mesohabitat scale in high Andean streams of southern Ecuador
title_full Hydrological influences on aquatic communities at the mesohabitat scale in high Andean streams of southern Ecuador
title_fullStr Hydrological influences on aquatic communities at the mesohabitat scale in high Andean streams of southern Ecuador
title_full_unstemmed Hydrological influences on aquatic communities at the mesohabitat scale in high Andean streams of southern Ecuador
title_sort hydrological influences on aquatic communities at the mesohabitat scale in high andean streams of southern ecuador
publishDate 2019
url https://onlinelibrary.wiley.com/doi/pdf/10.1002/eco.2033#accessDenialLayout
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score 11,871979