Changes in lake-sediment structure and composition caused by human impact
Repeated studies of Lake Martiska, Estonia
Bibliographic Data
| ID | 12265484 |
|---|---|
| Authors | J-M Punning (Tallinn University, corresponding author), Joan Boyle (0000-0002-1172-1079, University of Liverpool), J F Boyle (University of Liverpool), Jaanus Terasmaa (0000-0002-1346-6411, Tallinn University), Tiit Vaasma (0009-0003-4483-1471, Tallinn University), Annika Mikomägi (Tallinn University) |
| Year | 2007 |
| Volume | 17 |
| Issue | 1 |
| Pages | 145-151 |
| Publication date | 2007-01-01 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | The Holocene (JOURNAL) |
| Journal identifiers | ISSN: 0959-6836 • E-ISSN: 1477-0911 |
| Publisher | SAGE Publishing (PUBLISHER • US) |
| DOI | 10.1177/0959683607073297 |
| OpenAlex | W2137931661 |
| Language | EN |
| Citations received | 1 |
| References cited | 11 |
This research uses a comparison of the sediment record of Lake Martiska (NE Estonia) with well-documented historical changes in human impact to identify the factors dominantly affecting the sediment lithological composition, and the accumulation of heavy metals and other microelements into the sediments. To this end, comprehensive lithological-geochemical studies of the upper sediment were undertaken in 1986 and repeated in 2003 and 2005. Oil shale mining and processing heavily impacted the area via atmospheric pollution and groundwater extraction. As a result of the fly-ash deposition clear marker horizons of chemical compounds were formed. Historical water-level fluctuations are clearly reflected in the lithological composition and grain-size variations of the studied sediment cores. During regression and transgression phases displacement of the erosion-transport-accumulation limits caused redistribution of previously accumulated sediments and their return into the biogeochemical matter cycling of the lake. The 210 Pb chronology of the sediment records is in contradiction with the historical records of fly-ash emissions, suggesting that changes in 210 Pb flux and focusing of sediments caused by lake-level change have invalidated the dating models
Biogeochemical cycle · Deposition (geology · Erosion · Geochemistry · Geomorphology · Hydrology (agriculture · Marine transgression · Physical geography · Sediment · Structural basin · Geology and Paleoclimatology Research · Isotope Analysis in Ecology · Marine and environmental studies · Environmental Chemistry · Geology
| Citation velocity | historical |
|---|---|
| Highly cited | No |