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Assessment of water quality in temperate-plain streams (Argentina, South America) using a multiple approach Ecología austral
Ocon,Carolina S.; Rodrigues Capítulo,Alberto.
We assessed the water quality in two pampean lotic systems (Argentina), the Juan Blanco and Buñirigo streams, subjected to different land uses (i.e., the UNESCO Biosphere Nature Reserve vs. industry and agriculture, respectively) through measurements of physicochemical data and the structural parameters of the macroinvertebrate assemblages in addition to ecotoxicological analyses. The objective was to identify the degree of ecological impairment in adversely affected areas and the consequent effects on the biota. The results obtained allowed the establishment of different water-quality classes within the study area. According to the indices applied, the downstream zone of the Buñirigo stream was categorized as moderately polluted on the basis of losses of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Pollution; Macroinvertebrates; Physicochemical parameters; Ecotoxicological analyses; Pampean streams.
Ano: 2012 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1667-782X2012000200001
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Trophic relationships between macroinvertebrates and fish in a pampean lowland stream (Argentina) Iheringia, Sér. Zool.
López van Oosterom,María V.; Ocón,Carolina S.; Brancolini,Florencia; Maroñas,Miriam E.; Sendra,Eduardo D.; Rodrigues Capítulo,Alberto.
The diet and trophic relationships between the macroinvertebrates Phyllogomphoides joaquini Rodrigues Capítulo, 1992 and Coenagrionidae (Odonata), Chironomidae (Diptera), Diplodon delodontus (Lamarck, 1919) (Bivalvia: Hyriidae), and Pomacea canaliculata (Lamarck, 1822) (Gastropoda: Ampulariidae) and the fishes Pimelodella laticeps Eigenmann, 1917 (Heptapteridae) and Bryconamericus iheringii (Boulenger, 1887) (Characidae) in a temperate lowland lotic system in Argentina were assessed on the basis of gut contents and stable-isotope analyses. The feeding strategies were analyzed by the AMUNDSEN method. Relative food items contribution for the taxa studied indicated a generalist-type trophic strategy. In macroinvertebrates, in general, the values of stable...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Diet; Stable isotope; Temperate plain streams.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212013000100009
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