2015
DOI: 10.1590/1678-476620151053348358
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Abstract: ABSTRACT. Seven sites were examined in the Challhuaco-Ñireco system, located in the reserve of the Nahuel Huapi National Park, however part of the catchment is urbanized, being San Carlos de Bariloche (150,000 inhabitants) placed in the lower part of the basin. Physico-chemical variables were measured and benthic macroinvertebrates were collected during three consecutive years at seven sites from the headwater to the river outlet. Sites near the source of the river were characterised by Plecoptera, Ephemeropte… Show more

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Cited by 16 publications
(10 citation statements)
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“…They also found negative relationship of the mentioned benthos assemblages with variables associated to pollution (turbidity, conductivity, nutrients and total suspended solids) reflected a deterioration of the water quality nearby conventional we coffee refineries [20]. The results can lead to degradation of the level of oxygen in water, which can kill off virtually all aquatic life.…”
Section: Discussionmentioning
confidence: 96%
“…They also found negative relationship of the mentioned benthos assemblages with variables associated to pollution (turbidity, conductivity, nutrients and total suspended solids) reflected a deterioration of the water quality nearby conventional we coffee refineries [20]. The results can lead to degradation of the level of oxygen in water, which can kill off virtually all aquatic life.…”
Section: Discussionmentioning
confidence: 96%
“…Como en muchos otros ecosistemas, la comunidad de invertebrados, caracterizada en los arroyos de montaña por especies adaptadas a la vida en el fondo, representa la principal conexión entre los recursos basales del ecosistema, sean detrito o productores primarios, y los componentes superiores de la trama trófica (Cummins and Klug 1979). La fauna de invertebrados bentónicos de la cuenca del Challhuaco está dominada por estadíos larvales de insectos terrestres de cinco órdenes, Diptera, Coleoptera, Ephemeroptera, Plecoptera y Trichoptera, y de oligoquetos, con presencia también del platelminto Romankenkius patagonicus (Buria et al 2007;Montañez 2014;Mauad et al 2015;Mariluan 2017;Díaz Villanueva et al 2018). Tanto los arroyos de cabecera como a lo largo de la cuenca del Challhuaco (de menor a mayor orden) presentan una composición taxonómica espacio-temporal homogénea de sus ensambles, con abundancia de dípteros de las familias Chironomidae, Simulidae y Tipulidae, efemerópteros de las familias E������� �� ������� ������ ����������� ₁₃₇ Baetidae, Leptophlebiidae y Nesameletidae, plecópteros de las familias Austroperlidae, Gripopterygidae y Notonemouridae y tricópteros de las familias Hydrobiosidae, Hydropsychidae, Limnephilidae y Sericostomatidae.…”
Section: E) Consumidores Primariosunclassified
“…Una distinción con respecto de las comunidades de invertebrados que caracterizan a arroyos a menor altitud (incluyendo a la cuenca inferior del Challhuaco en su desagüe al lago Nahuel Huapi, Arroyo Ñireco) (Figura 1) es la ausencia de dos grupos de invertebrados: los crustáceos omnívoros del género Aegla y los moluscos raspadores del género Chilina (Albarino 1994; Mauad et al 2015). Por otra parte, los arroyos del Challhuaco menores a 2 m de ancho también son habitados por estadíos larvales del anfibio Alsodes gargola, la rana de palmada de arroyo.…”
Section: E) Consumidores Primariosunclassified
“…Benthic invertebrate structure and composition play a major role in many aquatic researches. Importance of research on macro-invertebrates includes the easy assessment of biological resources for the conservation purpose and the detection of pollution through the dissimilarities between expected and actual fauna assemblies [18]. Benthic macro-invertebrates are recognized as indicators of water qualities.…”
Section: Introductionmentioning
confidence: 99%