Arid
DOI10.3354/ab00554
Chironomid (Insecta: Diptera) assemblages along an Andean altitudinal gradient
Scheibler, Erica E.1; Roig-Junent, Sergio A.1; Cristina Claps, M.2
通讯作者Scheibler, Erica E.
来源期刊AQUATIC BIOLOGY
ISSN1864-7790
EISSN1864-7782
出版年2014
卷号20期号:2页码:169-184
英文摘要

Chironomidae are an abundant, diverse and ecologically important group common in mountain streams worldwide, but their patterns of distribution have been poorly described for the Andes region in western-central Argentina. Here we examine chironomid assemblages along an altitudinal gradient in the Mendoza River basin to study how spatial and seasonal variations affect the abundance patterns of genera across a gradient of elevation, assess the effects of environmental variables on the chironomid community and to describe its diversity using rarefaction and Shannon’s indices. Three replicate samples and physicochemical parameters were measured seasonally at 11 sites in 2000 and 2001. Twelve genera of chironomid larvae were identified, which belonged to 5 subfamilies. Chironomid composition changed from the headwaters to the outlet and was associated with changes in altitude, water temperature, substrate size and conductivity. We found a pronounced seasonal and spatial variation in the macroinvertebrate community and in physicochemical parameters. Environmental conditions such as elevated conductivity levels and increased river discharge occurring during the summer produced low chironomid density values at the sampling sites. The rarefaction index revealed that the sampling sites with highest richness were LU (middle section of the river) and PO (lower section). However, Shannon’s diversity index indicated that LU had the lowest diversity as a consequence of the dominance of Cricotopus over the other genera found. We attribute the low diversity found in our aquatic system to the aridity of the sampling area, as has been demonstrated in studies of other similar lotic systems in this mountain region.


英文关键词Macrobenthic invertebrates Larvae Mountain river Benthos Spatial gradients Seasonal variations Arid regions Argentina
类型Article
语种英语
国家Argentina
收录类别SCI-E
WOS记录号WOS:000334048800008
WOS关键词CANONICAL CORRESPONDENCE-ANALYSIS ; LAND-USE ; MACROINVERTEBRATE ASSEMBLAGES ; LONGITUDINAL DISTRIBUTION ; RIVER-BASIN ; COMMUNITIES ; STREAMS ; MENDOZA ; FAUNA ; DIVERSITY
WOS类目Marine & Freshwater Biology
WOS研究方向Marine & Freshwater Biology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/180746
作者单位1.CONICET Mendoza, IADIZA, CCT, RA-5500 Mendoza, Argentina;
2.CONICET La Plata, ILPLA, CCT, RA-1900 La Plata, Argentina
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GB/T 7714
Scheibler, Erica E.,Roig-Junent, Sergio A.,Cristina Claps, M.. Chironomid (Insecta: Diptera) assemblages along an Andean altitudinal gradient[J],2014,20(2):169-184.
APA Scheibler, Erica E.,Roig-Junent, Sergio A.,&Cristina Claps, M..(2014).Chironomid (Insecta: Diptera) assemblages along an Andean altitudinal gradient.AQUATIC BIOLOGY,20(2),169-184.
MLA Scheibler, Erica E.,et al."Chironomid (Insecta: Diptera) assemblages along an Andean altitudinal gradient".AQUATIC BIOLOGY 20.2(2014):169-184.
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