61 Publications (Page 3 of 3)
2019
New insights into environmental controls on the occurrence and abundance of Group I alkenones and their paleoclimate applications: Evidence from volcanic lakes of northeastern China
Yao, Yuan⋅Zhao, Jiaju⋅Longo, William M.⋅Li, Gaoyuan⋅Wang, Xian⋅Vachula, Richard S.⋅Wang, Karen J. and Huang, Yongsong
Earth and planetary science letters, vol. 527, pp. 115792, 2019-12-01. | Journal Article
 
Peak analysis of sedimentary charcoal records: Some underlying assumptions and potential pitfalls
Crawford, A.J. and Vachula, R.S.
Quaternary Science Reviews, vol. 225. | Journal Article
 
Spatial distribution characteristics and environmental significance of phytoliths in surface sediments of Qingshitan Lake in Southwest China
Li, R.⋅Fan, J.⋅Vachula, R.S.⋅Tan, S. and Qing, X.
Journal of Paleolimnology, vol. 61, pp. 201-215. | Journal Article
 
Systematic chemotaxonomic profiling and novel paleotemperature indices based on alkenones and alkenoates: Potential for disentangling mixed species input. Organic Geochemistry
. | Journal Article
 
Temperature-controlled tundra fire severity and frequency during the last millennium in the Yukon-Kuskokwim Delta, Alaska. The Holocene
. | Journal Article
2018
Assessing the spatial fidelity of sedimentary charcoal size fractions as fire history proxies with a high-resolution sediment record and historical data
Vachula, R.S.⋅Russell, J.M.⋅Huang, Y. and Richter, N.
Palaeogeography, Palaeoclimatology, Palaeoecology, vol. 508, pp. 166-175. | Journal Article
 
Comparison of black carbon chemical oxidation and macroscopic charcoal counts for quantification of fire by-products in sediments
Vachula, R.S.⋅Santos, E. and Huang, Y.
Organic Geochemistry, vol. 125, pp. 50-54. | Journal Article
 
Informing sedimentary charcoal-based fire reconstructions with a kinematic transport model
Vachula, R.S. and Richter, N.
Holocene, vol. 28, pp. 173-178. | Journal Article
 
Paleoenvironment and Archaeology Provide Cautionary Tales for Climate Policymakers
Kaufman, Brett⋅Kelly, Christopher and Vachula, Richard
The Geographical Bulletin, vol. 59, (no. 1), pp. 5-24, May 2018. | Journal Article
2017
Holocene climatic change in the Alaskan Arctic as inferred from oxygen-isotope and lake-sediment analyses at Wahoo Lake
Vachula, R.S.⋅Chipman, M.L. and Hu, F.S.
Holocene, vol. 27, pp. 1631-1644. | Journal Article
 
Polar bears and ice: cultural connotations of Arctic environments that contradict the science of climate change
Stenport, A.W. and Vachula, R.S.
Media, Culture and Society, vol. 39, pp. 282-295. | Journal Article