Chironomidae (Diptera) larvae assemblages differ along an altitudinal gradient and temporal periods in a subtropical montane stream in Northwest Argentina

Tejerina, Eva Gabriela; Malizia, Agustina

doi:10.1007/s10750-011-0984-x

Cited by 16 publications

(21 citation statements)

References 22 publications

(17 reference statements)

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“…In general, it was possible to find a particularity in the lifehistory of these genera that increased their occurrence at the regulated reach. Greater stability and food availability in gravel, could benefit Alotanypus, and other members of Tanypodinae, since they have been recorded mainly as predators and burrowers inhabiting fine sediments in zones with low current velocity (Pinder and Reiss, 1983;Tejerina and Malizia, 2012). The low hydraulic stress could also encourage the presence of other burrowers such as Polypedilum or Austrolimnius.…”

Section: Discussionmentioning

confidence: 99%

Changes in invertebrate assemblage structure as affected by the flow regulation of a páramo river

González‐Trujillo

Donato‐Rondón

2016

Ann. Limnol. - Int. J. Lim.

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Flow regulation can alter the structure and dynamics of lotic communities, especially in rivers with unpredictable high-flow events, such as those flowing through the Pa´ramo, an endemic ecosystem of the high-altitude Neotropical Andes. This study evaluated how flow regulation affects invertebrate assemblage structure in a Pa´ramo river. In both the wet and dry seasons, the study assessed flow history, water chemistry and mesohabitat characteristics in their relation to assemblage structures upstream (undisturbed reach) and downstream (disturbed reach) of a water diversion structure. The elimination of spates through flow regulation did not lead to a complete change in the assemblage components at the disturbed reach. Instead, it led to an assemblage structure with a greater genera-richness, a lower genera-evenness and a greater occurrence of certain genera, e.g., Pristina, Alotanypus, Polypedilum and Austrolimnius. These genera lacked resistance-resilience adaptations, which would allow them to survive in mesohabitat conditions resulting from increased hydromorphological stability, namely higher fine sediment retention, higher benthic organic matter (BOM) and lower hydraulic stress. Overall, the results of this study reinforce the assertion that, in Pa´ramo rivers, the temporal dynamics of the natural flow regime significantly control the structure of invertebrate assemblages. Thus, to preserve these rivers' biotic assemblages, it will be necessary to implement new regulation plans that mimic their natural flow histories.

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Section: Discussionmentioning

confidence: 99%

Changes in invertebrate assemblage structure as affected by the flow regulation of a páramo river

González‐Trujillo

Donato‐Rondón

2016

Ann. Limnol. - Int. J. Lim.

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“…Por ejemplo, Scheibler, Pozo, & Paggi (2008) analizaron la distribución espacio-temporal de Chironomidae en un arroyo andino de Mendoza a lo largo de 700 m (de 1 700 a 2 200 msnm), y Tejerina & Malizia (2012) evaluaron la comunidad de Chironomidae en una cuenca subtropical de Tucumán a lo largo de un gradiente altitudinal de 1 500 m (de 700 a 2 100 msnm). En el caso específico de las vegas o bofedales de Argentina (entre los 3 200 y 5 200 msnm y precipitaciones menores a los 300 mm anuales) el conocimiento de las comunidades de macroinvertebrados es escaso o nulo.…”

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Patrones espaciales en comunidades de macroinvertebrados acuáticos de la Puna Argentina

Nieto

2016

RBT

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Spatial patterns in communities of aquatic macroinvertebrates of Argentinean Puna. The macroinvertebrates are a vital component of freshwater ecosystems as they contribute to the process of organic matter while serving as food for other organisms such as fish and amphibians. Unfortunately, the knowledge of the aquatic diversity is poor in the high Andean systems (between 3 200 and 5 200 m.a.s.l. and rainfall below 300 mm per year), especially in the Argentinean peatbogs, a fact which has made difficult the interpretation of spatial patterns on a regional scale. The present study aimed to describe the composition of aquatic macroinvertebrates in seven peatbogs in the Argentinean Puna, and to analyze for the first time their spatial patterns. For this, we studied the relationship of these organisms with the environment, and obtained information about the surrounding vegetation and water physico-chemical characteristics. A total of 3 131 specimens of aquatic macroinvertebrates were collected, representing 25 taxa belonging to 22 families and 24 genera. In addition, 62 species of vascular plants were recorded, belonging to 20 families. The most abundant life form were the tufted grasses, followed by cushions. By using an NMDS (Non-Metrical Multidimensional Scaling) statistical analysis, the sampling sites were ordered in each peatbog as follows. The peatbogs located furthest West and South with higher water temperature were grouped on axis 1, whereas those with higher conductivity, whole water dissolved solids and salt concentration were grouped on axis 2. The water temperature was higher than air temperature at all times, and we found no association between temperature and altitude. The altitude had no correlation with the abundance of macroinvertebrates or with plant richness. Life forms such as scattered graminoids, trailing and prostrate herbs (in many cases they get into the channel) and aquatic plants were more abundant in peatbogs 4, 5 and 7 and they had a correlation with some macroinvertebrates belonging to functional trophic groups such as filter-collectors, collectors and scrapers. Finally, conductivity, whole dissolved solids and salt concentration had their highest value in peatbog 6, where Bivalvia (filter-collector) and Hyalella (collector) were also found. The results obtained attest that these macroinvertebrates displayed diversity and composition spatial patterns, the most important feature being their relationship with the surrounding vegetation, and to a lesser extent, with the physical and chemical traits of water in seven fertile lowlands in the Argentinean Puna. Rev. Biol. Trop. 64 (2): 747-762. Epub 2016 June 01.

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“…Compositional changing in chironomid assemblages along altitudinal gradients have been verified by many researchers worldwide (McKie et al 2005, Tejerina and Malizia 2012, Henriques-Oliveira and Nessimian 2010, Scheibler et al 2014, Robinson et al 2016, Matthews-Bird et al 2016). In mountain ecosystems the occurrence of chironomid species can be influenced by environmental changes related to altitude variation, such as temperature and oxygen availability (Oliver 1971, Pinder 1986, Eggermont and Heiri 2012), dispersal capacity (Ashe et al 1987), historical events (McKie et al 2005, Allegrucci et al 2006, Krosch et al 2011) or other regional particularities (Körner 2007).…”

Section: Discussionmentioning

confidence: 72%

Madicolous Chironomidae from the Brazilian Atlantic Forest: a checklist with notes on altitudinal distributions (Diptera, Insecta)

Shimabukuro¹,

Trivinho‐Strixino²

2018

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Thin layers of water running over rocky surfaces are characteristic of madicolous habitats, which harbor a peculiar Chironomidae community. However, information on the identity, distribution, and ecology of madicolous chironomids in the Neotropical region are still sparse. The main purpose of this research is to reveal and contribute to the ecology of madicolous Chironomidae species, especially regarding their altitudinal distribution in the Atlantic Forest. Sampling was performed using our own designed emergence traps deployed from 0 to 2700 m a.s.l. in 70 sites in three mountains in southeastern Brazil. Sixty taxa of chironomids were collected and identified, of which only 22 are known to science. Most of the species showed a wider distribution than previously known, both in terms of geographic and altitudinal ranges, while others showed significant association with particular altitudinal bands (as evidenced by the indicator species analysis). Atlantic Forest mountainous regions are known to harbor one of the richest fauna in the world and have been suffering from several types of environmental impacts, including climate change, which will especially affect taxa living in specialized habitats. The narrow range of tolerance to environmental conditions verified for mountain species, and the fact that many of them are rare and endemic, make the conservation efforts in these areas indispensable.

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Chironomidae (Diptera) larvae assemblages differ along an altitudinal gradient and temporal periods in a subtropical montane stream in Northwest Argentina

Cited by 16 publications

References 22 publications

Changes in invertebrate assemblage structure as affected by the flow regulation of a páramo river

Changes in invertebrate assemblage structure as affected by the flow regulation of a páramo river

Patrones espaciales en comunidades de macroinvertebrados acuáticos de la Puna Argentina

Madicolous Chironomidae from the Brazilian Atlantic Forest: a checklist with notes on altitudinal distributions (Diptera, Insecta)

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