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dc.contributor.authorLlanquín-Rosas, Francisco
dc.contributor.authorCárcamo-Tejer, Violeta
dc.contributor.authorPinto, Irma Vila
dc.contributor.authorSáez-Arteaga, Alberto
dc.contributor.authorCorrea-Araneda, Francisco
dc.contributor.authorGuerrero-Jimenez, Claudia Jimena
dc.date.accessioned2024-04-09T22:49:42Z
dc.date.available2024-04-09T22:49:42Z
dc.date.issued2024
dc.identifier10.23818/limn.43.09
dc.identifier.issn02138409
dc.identifier.urihttps://hdl.handle.net/20.500.12728/10318
dc.description.abstractHigh Andean freshwater ecosystems are highly threatened by scarce water availability, species invasion, and global climate change, so generating knowledge about their ecological characteristics is extremely important for conservation decision-making. In this work, the seasonal variations and relationships between physico-chemical variables and the structure and composition of the macroinvertebrate community were analyzed considering “season”, “type of ecosystem” and “site” factors. Five sites of representative ecosystems at Lauca River Basin of the Chilean Altiplano were sampled, two of them lentic and three lotic. Two field-sampling periods within a year according to the pre-and post-rain seasons characteristic of the Altiplano climate were considered. Thirty-five taxa were identified, and it was observed that the taxa Orthocladiinae, Austrelmis sp., Hyallela cf kochi, Podonominae and Helicopsychidae were indicator taxa that contributed the most to differences among sites or ecosystems (≥ 10 %.). No significant differences were found in the alpha diversity indicators used, except for some abundance values and Pielou’s Evenness index (J´), which varied significantly between lotic and lentic systems. The results of the ordination analysis showed a significant differentiation considering physical and chemical variables and macroinvertebrates assemblages that responded to “sites” (ANOSIM R Global = 0.64, p = 0.001) and “type of ecosystem” factors (ANOSIM R Global = 0.31, p = 0.02). The “season” factor was not statistically significant to explain the variability of biological data (ANOSIM R Global =-0.003, p = 0.47) and was slight and marginally significant with the physical and chemical data (ANOSIM R Global = 0.1, p = 0.04). In addition, the linear redundancy analysis (RDA) showed that physico-chemical variables related to hardness, temperature, phosphorous, and nitrogen explained most of the variance in the biological data (the first two canonical axes RDA1 and RDA2 explained 45.23 % of the total variation, p = 0.004). These results support the relevance of local conditions for high altitude wetlands and how those environmental characteristics can be reflected in the macroinvertebrate assemblages that inhabit them. © Asociación Ibérica de Limnología, Madrid. Spain.es_ES
dc.description.sponsorshipCONICYT-PF-CHA; Corporación Nacional Forestal; Mag, (-222015999); National Geographic Society, NGS, (WW140R17); Universidad Autónoma de Coahuila, UAdeC, (DIUA 213-2021)es_ES
dc.language.isoenes_ES
dc.publisherAsociacion Iberica de Limnologiaes_ES
dc.subjectbiodiversityes_ES
dc.subjectendorheic basines_ES
dc.subjecthighland freshwater ecosystemses_ES
dc.subjectmacroinvertebrate communityes_ES
dc.titleBenthic macroinvertebrates community structure and physical-chemical characteristics at Lauca River Basin high altitude wetlands, Altiplano, Chilees_ES
dc.title.alternativeEstructura de la comunidad de macroinvertebrados bentónicos y características físico-químicas en humedales de altura en la cuenca del río Lauca, Altiplano, Chilees_ES
dc.typeArticlees_ES


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