Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Reconstructing recent environmental changes using non-biting midges (Diptera: Chironomidae) in two high mountain lakes from northern Patagonia, Argentina |
| Abstract | Remote lakes of northern Patagonia are ideal sites for examining climate- and non-climate-driven changes in aquatic ecosystems because there is little evidence of human influence and there is no detailed information on recent environmental trends in the region (i.e. the last 200 years). Subfossil chironomids (Diptera: Chironomidae) are useful paleoindicators due to their specific response to numerous environmental factors. Here, we analyze the chironomid subfossil assemblages from two remote lakes located in different environmental settings in Nahuel Huapi National Park of northern Patagonia, Argentina. Chironomids combined with sedimentary pigments (chlorophyll derivatives and total carotenoids) and organic matter provided information on the environmental history of the lakes for the last ca. 200 years. The Pb-210 chronology and tephra layers are used to establish the chronology of changes in the chironomid assemblages associated to different environmental factors that impacted the area during the period covered by the study. The deposition of volcanic ash affected the abundance and composition of chironomid assemblage throughout the record of both lakes. However, changing climate conditions and human activities are also responsible for chironomid changes in the last 50 years. |
| Source | Journal of paleolimnology 59 (2), pp. 175–187 |
| Keywords | Subfossil chironomidsHigh mountain lakesEnvironmental impactNorthern Patagonia |
| Journal | Journal of paleolimnology |
| Editor | Kluwer Academic, Boston, Paesi Bassi |
| Year | 2018 |
| Type | Articolo in rivista |
| DOI | 10.1007/s10933-017-9957-z |
| Authors | Montes de Oca, Fernanda; Motta, Luciana; Sofia Plastani, Maria; Laprida, Cecilia; Lami, Andrea; Massaferro, Julieta |
| Text | 398734 2018 10.1007/s10933 017 9957 z ISI Web of Science WOS 000423348200004 Scopus 2 s2.0 85018490409 Subfossil chironomids High mountain lakes Environmental impact Northern Patagonia Reconstructing recent environmental changes using non biting midges Diptera Chironomidae in two high mountain lakes from northern Patagonia, Argentina Montes de Oca, Fernanda; Motta, Luciana; Sofia Plastani, Maria; Laprida, Cecilia; Lami, Andrea; Massaferro, Julieta 1. CONICET, CENAC/APNAdministracion de Parques NacionalesBarilocheArgentina 2.Instituto de Estudios Andinos Don Pablo Groeber UBA CONICET, Departamento de Ciencias GeologicasUniversidad de Buenos AiresBuenos AiresArgentina 3.Istituto per lo Studio degli Ecosistemi ISE CNR Verbania PallanzaItaly Remote lakes of northern Patagonia are ideal sites for examining climate and non climate driven changes in aquatic ecosystems because there is little evidence of human influence and there is no detailed information on recent environmental trends in the region i.e. the last 200 years . Subfossil chironomids Diptera Chironomidae are useful paleoindicators due to their specific response to numerous environmental factors. Here, we analyze the chironomid subfossil assemblages from two remote lakes located in different environmental settings in Nahuel Huapi National Park of northern Patagonia, Argentina. Chironomids combined with sedimentary pigments chlorophyll derivatives and total carotenoids and organic matter provided information on the environmental history of the lakes for the last ca. 200 years. The Pb 210 chronology and tephra layers are used to establish the chronology of changes in the chironomid assemblages associated to different environmental factors that impacted the area during the period covered by the study. The deposition of volcanic ash affected the abundance and composition of chironomid assemblage throughout the record of both lakes. However, changing climate conditions and human activities are also responsible for chironomid changes in the last 50 years. 59 Published version Articolo 2018_J_Paleolimnol_59_175_187.pdf Articolo in rivista Kluwer Academic 0921 2728 Journal of paleolimnology Journal of paleolimnology J. paleolimnol. andrea.lami LAMI ANDREA |