Community structure of aquatic insects in the Esparza River, Costa Rica.
This study focused on the structure of the aquatic insect community in spatial and temporal scales in the Esparza River. The river was sampled for one full year throughout 2007. During the dry season low flow months, five sampling points were selected in two different habitats (currents and pools),...
| Publicado en: | Revista de Biología Tropical Vol. 57; no. 1/2; pp. 133 - 140 |
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| Formato: | Artículo |
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Universidad de Costa Rica
mar-jun2009
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=lth&AN=43821090&site=ehost-live header: @attributes: shortDbName: lth uiTerm: 43821090 longDbName: MedicLatina uiTag: AN controlInfo: bkinfo: jinfo: jid: 00347744 2BO jtl: Revista de Biología Tropical issn: 00347744 maglogo: N pubinfo: dt: mar-jun2009 vid: 57 iid: 1/2 pid: 4413 pub: Universidad de Costa Rica artinfo: ui: 43821090 ppf: 133 ppct: 7 formats: fmt: @attributes: type: P size: 1.9MB tig: atl: Community structure of aquatic insects in the Esparza River, Costa Rica. aug: au: Herrera-Vásquez, Jonathan affil: Maestría en desarrollo sostenible, Universidad de Costa Rica, Sede de Occidente su: Marine insects Aquatic insects Freshwater insects Water quality Costa Rica sug: subj: Costa Rica Marine insects Aquatic insects Freshwater insects Water quality keyword: community structure Esparza River water quality calidad del agua Costa Rica estruclura de comunidad Insectos acuáticos integridad ecológica río Esparza ab: This study focused on the structure of the aquatic insect community in spatial and temporal scales in the Esparza River. The river was sampled for one full year throughout 2007. During the dry season low flow months, five sampling points were selected in two different habitats (currents and pools), with five replicates per sample site. During the wet season with peak rain, only the data in the "current habitat" were sampled at each site. Specimens present in the different substrates were collected and preserved in situ. A nested ANOVA was then applied to the data to determine richness and density as the response variables. The variations in temporal and spatial scales were analyzed using width, depth and discharge of the river, and then analyzed using a nested ANOVA. Only a correlation of 51% similarity in richness was found, while in spatial scale, richness showed significant variation between sampling sites, but not between habitats. However, the temporal scale showed significant differences between habitats. Density showed differences between sites and habitats during the dry season in the spatial scale, while in the temporal scale significant variation was found between sampling sites. Width varied between habitats during the dry season, but not between sampling points. Depth showed differences between sampling sites and season. This work studies the importance of community structure of aquatic insects in rivers, and its relevance for the quality of water in rivers and streams. Se estudió Ia estructura de Ia comunidad de insectos acuáticos en el río Esparza, Costa Rica, en escalas espacial y temporal. Los muestreos se realizaron durante 2007 en 5 estaciones. En mayor sequía se recolectaron cinco réplicas en cada estación en dos tipos de hábitat: corriente y pozas. En mayor precipitación se utilizó este procedimiento únicamente en Ia corriente. Se recolectaron los especimenes en diferentes sustratos con un cemidor y se preservaron in situ. Se analizó Ia variabilidad en ambas escalas con un análisis de varianza anidado cuyas variables respuesta fueron riqueza y densidad de organismos. Se efectuaron mediciones de profundidad promedio, descarga, y ancho del cauce, y se les hizo análisis de varianza. Se encontró un 51% de similaridad en riqueza entre hábitats. La riqueza analizada en Ia escala espacial mostró variación significativa entre sitios de muestreo pero no entre hábitats, mientras que en Ia escala temporal presentó diferencia entre época seca y Iluviosa. La densidad mostró diferencias debido al sitio y al hábitat durante la época seca en la escala espacial, pero solo se encontró variación significativa debida al sitio de muestreo entre estaciones. Se encontró variabilidad significativa en el ancho del río en diferentes hábitats durante la época seca pero no así entre estaciones de muestreo. La profundidad mostró variación significativa entre estaciones y entre Sitios de muestreo. Se discute La importancia de estudiar Ia estructura de Ia comunidad y su posible relevancia en investigación orientada a calidad de aguas. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y custom: Copyright of Revista de Biología Tropical is the property of Universidad de Costa Rica and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. item: Revista de Biología Tropical holder: Universidad de Costa Rica dt: @attributes: year: 2009 holdings: @attributes: islocal: N |
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