Hydrological systems from the Antarctic Peninsula under climate change: James Ross archipelago as study case
Hydrological systems of the ice-free areas of the James Ross archipelago (NE Antarctic Peninsula) provide a unique opportunity for studying recent environmental changes associated with the current Global Warming. Geochemical, hydrological, sedimentological, and magnetic studies were carried out on d...
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2016
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_18666280_v75_n7_p_Lecomte http://hdl.handle.net/20.500.12110/paper_18666280_v75_n7_p_Lecomte |
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paper:paper_18666280_v75_n7_p_Lecomte2023-06-08T16:29:45Z Hydrological systems from the Antarctic Peninsula under climate change: James Ross archipelago as study case Antarctic Peninsula Freshwater ecosystems Geochemistry Limnology Magnetism Sediment Catchments Ecology Ecosystems Evaporation Geochemistry Global warming Lakes Limnology Lithology Magnetism Quantum theory Sediments Trace elements Antarctic Peninsula Atmospheric precipitation Environmental change Freshwater ecosystem Geochemical characteristic Physico-chemical analysis Statistical differences Total dissolved solids Climate change Hydrological systems of the ice-free areas of the James Ross archipelago (NE Antarctic Peninsula) provide a unique opportunity for studying recent environmental changes associated with the current Global Warming. Geochemical, hydrological, sedimentological, and magnetic studies were carried out on different lake systems and ephemeral ponds from post-Holocene periglacial environments to characterize their natural variability. Significant differences between the lakes were observed based on physicochemical analyses, and can be attributed to several characteristics and processes taking place (geochemical, diagenetic, biological, etc.) in individual lake catchments. Seymour-Marambio Island’s lakes exhibit high total dissolved solids (~3.300 mg L−1) due to the high rate of evaporation in the region, whereas trace elements show differences in the lithological source. Lakes from Vega and James Ross islands are comparatively diluted, with the highest pH values up to 10.2. Within Vega Island, trace elements discriminate lakes into sectors which show statistical differences due to variations in lithological sources. Dissolved sources can be divided according to their kinetics into: high-rate processes which occur during summer months (evaporation, salt precipitation, atmospheric precipitation, melting processes) and low-rate processes (mineral weathering, giving a long-term signature). The present multidisciplinary study contributes to a better understanding of Antarctic lake systems, and can be used as a baseline dataset for further studies investigating the impact of recent climate changes on the biological and geochemical characteristics of these pristine ecosystems in the future. © 2016, Springer-Verlag Berlin Heidelberg. 2016 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_18666280_v75_n7_p_Lecomte http://hdl.handle.net/20.500.12110/paper_18666280_v75_n7_p_Lecomte |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Antarctic Peninsula Freshwater ecosystems Geochemistry Limnology Magnetism Sediment Catchments Ecology Ecosystems Evaporation Geochemistry Global warming Lakes Limnology Lithology Magnetism Quantum theory Sediments Trace elements Antarctic Peninsula Atmospheric precipitation Environmental change Freshwater ecosystem Geochemical characteristic Physico-chemical analysis Statistical differences Total dissolved solids Climate change |
| spellingShingle |
Antarctic Peninsula Freshwater ecosystems Geochemistry Limnology Magnetism Sediment Catchments Ecology Ecosystems Evaporation Geochemistry Global warming Lakes Limnology Lithology Magnetism Quantum theory Sediments Trace elements Antarctic Peninsula Atmospheric precipitation Environmental change Freshwater ecosystem Geochemical characteristic Physico-chemical analysis Statistical differences Total dissolved solids Climate change Hydrological systems from the Antarctic Peninsula under climate change: James Ross archipelago as study case |
| topic_facet |
Antarctic Peninsula Freshwater ecosystems Geochemistry Limnology Magnetism Sediment Catchments Ecology Ecosystems Evaporation Geochemistry Global warming Lakes Limnology Lithology Magnetism Quantum theory Sediments Trace elements Antarctic Peninsula Atmospheric precipitation Environmental change Freshwater ecosystem Geochemical characteristic Physico-chemical analysis Statistical differences Total dissolved solids Climate change |
| description |
Hydrological systems of the ice-free areas of the James Ross archipelago (NE Antarctic Peninsula) provide a unique opportunity for studying recent environmental changes associated with the current Global Warming. Geochemical, hydrological, sedimentological, and magnetic studies were carried out on different lake systems and ephemeral ponds from post-Holocene periglacial environments to characterize their natural variability. Significant differences between the lakes were observed based on physicochemical analyses, and can be attributed to several characteristics and processes taking place (geochemical, diagenetic, biological, etc.) in individual lake catchments. Seymour-Marambio Island’s lakes exhibit high total dissolved solids (~3.300 mg L−1) due to the high rate of evaporation in the region, whereas trace elements show differences in the lithological source. Lakes from Vega and James Ross islands are comparatively diluted, with the highest pH values up to 10.2. Within Vega Island, trace elements discriminate lakes into sectors which show statistical differences due to variations in lithological sources. Dissolved sources can be divided according to their kinetics into: high-rate processes which occur during summer months (evaporation, salt precipitation, atmospheric precipitation, melting processes) and low-rate processes (mineral weathering, giving a long-term signature). The present multidisciplinary study contributes to a better understanding of Antarctic lake systems, and can be used as a baseline dataset for further studies investigating the impact of recent climate changes on the biological and geochemical characteristics of these pristine ecosystems in the future. © 2016, Springer-Verlag Berlin Heidelberg. |
| title |
Hydrological systems from the Antarctic Peninsula under climate change: James Ross archipelago as study case |
| title_short |
Hydrological systems from the Antarctic Peninsula under climate change: James Ross archipelago as study case |
| title_full |
Hydrological systems from the Antarctic Peninsula under climate change: James Ross archipelago as study case |
| title_fullStr |
Hydrological systems from the Antarctic Peninsula under climate change: James Ross archipelago as study case |
| title_full_unstemmed |
Hydrological systems from the Antarctic Peninsula under climate change: James Ross archipelago as study case |
| title_sort |
hydrological systems from the antarctic peninsula under climate change: james ross archipelago as study case |
| publishDate |
2016 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_18666280_v75_n7_p_Lecomte http://hdl.handle.net/20.500.12110/paper_18666280_v75_n7_p_Lecomte |
| _version_ |
1768543820748685312 |