| Title | The sediment record of the past 200 years in a Swiss high-alpine lake: Hagelseewli (2339 ma.s.l.) |
| Abstract | Sediment cores spanning the last two centuries were taken in Hagelseewli, a high-elevation lake in the Swiss Alps. Contiguous 0.5 cm samples were analysed for biological remains, including diatoms, chironomids, cladocera, chrysophyte cysts, and fossil pigments. In addition, sedimentological and geochemical variables such as loss-on-ignition, total carbon, nitrogen, sulphur, grain-size and magnetic mineralogy were determined. The results of these analyses were compared to a long instrumental air temperature record that was adapted to the elevation of Hagelseewli by applying mean monthly lapse rates. |
| Source | Journal of paleolimnology 28 (1), pp. 111–127 |
| Keywords | diatomschironomidscladocerachrysophyte cystssedimentologymagnetismSCPtemperature |
| Journal | Journal of paleolimnology |
| Editor | Kluwer Academic, Boston, Paesi Bassi |
| Year | 2002 |
| Type | Articolo in rivista |
| DOI | 10.1023/A:1020328119961 |
| Authors | Lotter, AF; Appleby, PG; Bindler, R; Dearing, JA; Grytnes, JA; Hofmann, W; Kamenik, C; Lami, A; Livingstone, DM; Ohlendorf, C; Rose, N; Sturm, M |
| Text | 346908 2002 10.1023/A 1020328119961 ISI Web of Science WOS 000178212200008 ISI Web of Science WOS 000178212200008 diatoms chironomids cladocera chrysophyte cysts sedimentology magnetism SCP temperature The sediment record of the past 200 years in a Swiss high alpine lake Hagelseewli 2339 ma.s.l. Lotter, AF; Appleby, PG; Bindler, R; Dearing, JA; Grytnes, JA; Hofmann, W; Kamenik, C; Lami, A; Livingstone, DM; Ohlendorf, C; Rose, N; Sturm, M Universitat Bern Department Institute of Plant Sciences; Umeå University Department Department of Ecology and Environmental Science; National Research Council Department Institute of Ecosystem Study ISE Sediment cores spanning the last two centuries were taken in Hagelseewli, a high elevation lake in the Swiss Alps. Contiguous 0.5 cm samples were analysed for biological remains, including diatoms, chironomids, cladocera, chrysophyte cysts, and fossil pigments. In addition, sedimentological and geochemical variables such as loss on ignition, total carbon, nitrogen, sulphur, grain size and magnetic mineralogy were determined. The results of these analyses were compared to a long instrumental air temperature record that was adapted to the elevation of Hagelseewli by applying mean monthly lapse rates. During much of the time, the lake is in the shadow of a high cliff to the south, so that the lake is ice covered during much of the year and thus decoupled from climatic forcing. Lake biology is therefore influenced more by the duration of ice cover than by direct temperature effects during the short open water season. Long periods of ice cover result in anoxic water conditions and dissolution of authigenic calcites, leading to carbonate free sediments. 28 Published version Articolo in rivista Kluwer Academic 0921 2728 Journal of paleolimnology Journal of paleolimnology J. paleolimnol. andrea.lami LAMI ANDREA |
