Precipitation and dissolution of calcite in a Swiss high alpine lake
Water chemistry and sediment trap data from the 18.9-m-deep, high-altitude, hardwater lake Hagelseewli (2339 m asl.) indicates that biogenic induced calcite precipitation occurs in a water depth of 6 to 9 m at a temperature of 4°C. Our data indicates that calcite precipitation takes place as a short...
Published in: | Arctic, Antarctic, and Alpine Research |
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Language: | English |
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Taylor & Francis
2001
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Online Access: | https://doi.org/10.2307/1552550 |
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fteawag:oai:dora:eawag_4261 2023-05-15T14:14:34+02:00 Precipitation and dissolution of calcite in a Swiss high alpine lake Ohlendorf, Christian Sturm, Michael 2001 https://doi.org/10.2307/1552550 eng eng Taylor & Francis Arctic, Antarctic, and Alpine Research--Arct. Antarct. Alp. Res.--journals:245--1523-0430--1938-4246 eawag:4261 journal id: journals:245 issn: 1523-0430 e-issn: 1938-4246 ut: 000172713800006 local: 8726 doi:10.2307/1552550 scopus: 2-s2.0-0035662619 Text Journal Article 2001 fteawag https://doi.org/10.2307/1552550 2023-04-09T04:48:16Z Water chemistry and sediment trap data from the 18.9-m-deep, high-altitude, hardwater lake Hagelseewli (2339 m asl.) indicates that biogenic induced calcite precipitation occurs in a water depth of 6 to 9 m at a temperature of 4°C. Our data indicates that calcite precipitation takes place as a short pulse that lasts less than 14 d in response to photosynthetic CO 2 uptake in late summer probably by cyanobacterial picoplankton. In up to 8.4 times supersaturated water 30 μm large calcite crystals precipitate that show surface features typical for eutrophic lakes (rough surface and enhanced columnar growth). Subsequently, during the long period of ice coverage calcite is completely dissolved in strongly undersaturated bottom waters. Sediment calcite concentrations therefore are below 0.3%, although the comparison of trap fluxes and sediment accumulation rates indicates that they could be as high as 25%. The theoretical annual accumulation of calcite in Hagelseewli is similar in magnitude to a single spring precipitation event in a low-altitude temperate, hardwater lake. In the most recent sediments the occurrence of higher amounts of organic carbon and sulfur indicates increasing bottom water anoxia during the last 30 to 40 yr. Article in Journal/Newspaper Antarctic and Alpine Research Arctic DORA Eawag Alpine Lake ENVELOPE(-129.182,-129.182,55.529,55.529) Arctic, Antarctic, and Alpine Research 33 4 410 |
institution |
Open Polar |
collection |
DORA Eawag |
op_collection_id |
fteawag |
language |
English |
description |
Water chemistry and sediment trap data from the 18.9-m-deep, high-altitude, hardwater lake Hagelseewli (2339 m asl.) indicates that biogenic induced calcite precipitation occurs in a water depth of 6 to 9 m at a temperature of 4°C. Our data indicates that calcite precipitation takes place as a short pulse that lasts less than 14 d in response to photosynthetic CO 2 uptake in late summer probably by cyanobacterial picoplankton. In up to 8.4 times supersaturated water 30 μm large calcite crystals precipitate that show surface features typical for eutrophic lakes (rough surface and enhanced columnar growth). Subsequently, during the long period of ice coverage calcite is completely dissolved in strongly undersaturated bottom waters. Sediment calcite concentrations therefore are below 0.3%, although the comparison of trap fluxes and sediment accumulation rates indicates that they could be as high as 25%. The theoretical annual accumulation of calcite in Hagelseewli is similar in magnitude to a single spring precipitation event in a low-altitude temperate, hardwater lake. In the most recent sediments the occurrence of higher amounts of organic carbon and sulfur indicates increasing bottom water anoxia during the last 30 to 40 yr. |
format |
Article in Journal/Newspaper |
author |
Ohlendorf, Christian Sturm, Michael |
spellingShingle |
Ohlendorf, Christian Sturm, Michael Precipitation and dissolution of calcite in a Swiss high alpine lake |
author_facet |
Ohlendorf, Christian Sturm, Michael |
author_sort |
Ohlendorf, Christian |
title |
Precipitation and dissolution of calcite in a Swiss high alpine lake |
title_short |
Precipitation and dissolution of calcite in a Swiss high alpine lake |
title_full |
Precipitation and dissolution of calcite in a Swiss high alpine lake |
title_fullStr |
Precipitation and dissolution of calcite in a Swiss high alpine lake |
title_full_unstemmed |
Precipitation and dissolution of calcite in a Swiss high alpine lake |
title_sort |
precipitation and dissolution of calcite in a swiss high alpine lake |
publisher |
Taylor & Francis |
publishDate |
2001 |
url |
https://doi.org/10.2307/1552550 |
long_lat |
ENVELOPE(-129.182,-129.182,55.529,55.529) |
geographic |
Alpine Lake |
geographic_facet |
Alpine Lake |
genre |
Antarctic and Alpine Research Arctic |
genre_facet |
Antarctic and Alpine Research Arctic |
op_relation |
Arctic, Antarctic, and Alpine Research--Arct. Antarct. Alp. Res.--journals:245--1523-0430--1938-4246 eawag:4261 journal id: journals:245 issn: 1523-0430 e-issn: 1938-4246 ut: 000172713800006 local: 8726 doi:10.2307/1552550 scopus: 2-s2.0-0035662619 |
op_doi |
https://doi.org/10.2307/1552550 |
container_title |
Arctic, Antarctic, and Alpine Research |
container_volume |
33 |
container_issue |
4 |
container_start_page |
410 |
_version_ |
1766286963839598592 |