Loading...
Please wait, while we are loading the content...
Similar Documents
A ~6000 yr diatom record of mid- to late Holocene fluctuations in the level of Lago Wiñaymarca, Lake Titicaca (Peru/Bolivia)
| Content Provider | Scilit |
|---|---|
| Author | Weide, D. Marie Fritz, Sherilyn C. Hastorf, Christine A. Bruno, Maria C. Baker, Paul A. Guedron, Stephane Salenbien, Wout |
| Copyright Year | 2017 |
| Description | A multidecadal-scale lake-level reconstruction for Lago Wiñaymarca, the southern basin of Lake Titicaca, has been generated from diatom species abundance data. These data suggest that ~6500 cal yr BP Lago Wiñaymarca was dry, as indicated by a sediment unconformity. At ~4400 cal yr BP, the basin began to fill, as indicated by the dominance of shallow epiphytic species. It remained somewhat saline with extensive wetlands and abundant aquatic plants until ~3800 cal yr BP, when epiphytic species were replaced by planktic saline-indifferent species, suggesting a saline shallow lake. Wiñaymarca remained a relatively shallow lake that fluctuated on a multidecadal scale until ~1250 cal yr BP, when freshwater planktic species increased, suggesting a rise in lake level with a concomitant decrease in salinity. The lake became gradually fresher, dominated by deep, freshwater species from ~850 cal yr BP. By ~80 cal yr BP, saline-tolerant species were rare, and the lake was dominated by freshwater planktic diatoms, resembling the fresh and deep lake of today. These results reveal a more dynamic and chronologically specific record of lake-level fluctuations and associated ecological conditions that provide important new data for paleoclimatologists and archaeologists, to better understand human-environmental dynamics during the mid- to late Holocene. |
| Related Links | https://www.cambridge.org/core/services/aop-cambridge-core/content/view/AD610BF21D2E652E4551D916057AA2D2/S0033589417000497a.pdf/div-class-title-a-6000-yr-diatom-record-of-mid-to-late-holocene-fluctuations-in-the-level-of-lago-winaymarca-lake-titicaca-peru-bolivia-div.pdf |
| Ending Page | 192 |
| Page Count | 14 |
| Starting Page | 179 |
| ISSN | 00335894 |
| e-ISSN | 10960287 |
| DOI | 10.1017/qua.2017.49 |
| Journal | Quaternary Research |
| Issue Number | 2 |
| Volume Number | 88 |
| Language | English |
| Publisher | Cambridge University Press (CUP) |
| Publisher Date | 2017-08-02 |
| Access Restriction | Open |
| Subject Keyword | Quaternary Research |
| Content Type | Text |
| Resource Type | Article |
| Subject | Earth-Surface Processes Arts and Humanities |
