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Arctic Environmental Change of the Last Four Centuries
A compilation of paleoclimate records from lake sediments, trees, glaciers, and marine sediments provides a view of circum-Arctic environmental variability over the last 400 years. From 1840 to the…
The Anthropocene is functionally and stratigraphically distinct from the Holocene
C climatic, biological, and geochemical signatures of human activity in sediments and ice cores, Combined with deposits of new materials and radionuclides, as well as human-caused modification of sedimentary processes, the Anthropocene stands alone stratigraphically as a new epoch beginning sometime in the mid–20th century.
Climate-driven regime shifts in the biological communities of arctic lakes.
- J. Smol, A. P. Wolfe, J. Weckström
- Environmental Science, GeographyProceedings of the National Academy of Sciences…
- 22 March 2005
Fifty-five paleolimnological records from lakes in the circumpolar Arctic reveal widespread species changes and ecological reorganizations in algae and invertebrate communities since approximately anno Domini 1850, indicating that the opportunity to study arctic ecosystems unaffected by human influences may have disappeared.
Holocene Environmental Variability in Southern Greenland Inferred from Lake Sediments
- M. Kaplan, A. P. Wolfe, G. Miller
- Environmental Science, GeographyQuaternary Research
- 1 September 2002
Abstract Sediments from Qipisarqo Lake provide a continuous Holocene paleoenvironmental record from southern Greenland. Following deglaciation and glacio-isostatic emergence of the basin from the sea…
Holocene paleohydrology and glacial history of the central Andes using multiproxy lake sediment studies
Mid-Miocene cooling and the extinction of tundra in continental Antarctica
- A. R. Lewis, D. Marchant, A. P. Wolfe
- Environmental Science, GeographyProceedings of the National Academy of Sciences
- 5 August 2008
The discovery of exceptionally well preserved fossils of lacustrine and terrestrial organisms from the McMurdo Dry Valleys sector of the Transantarctic Mountains are reported, providing novel constraints for the timing and amplitude of middle-Miocene cooling in Antarctica and revealing the ecological legacy of this global climate transition.
Temperature and precipitation history of the Arctic
Anthropogenic nitrogen deposition induces rapid ecological changes in alpine lakes of the Colorado Front Range (USA)
Recent sediments from two alpine lakes (> 3300 m asl) in the Colorado Front Range (USA) register marked and near-synchronous changes that are believed to represent ecological responses to enhanced…
Recent ecological and biogeochemical changes in alpine lakes of Rocky Mountain National Park (Colorado, USA): a response to anthropogenic nitrogen deposition
Dated sediment cores from five alpine lakes (>3200 m asl) in Rocky Mountain National Park (Colorado Front Range, USA) record near‐synchronous stratigraphic changes that are believed to reflect…