Abbott, M.B., Edwards, M.E., and Finney, B.P., 2010, a 40,000-Yr Record of Environmental Change from Burial Lake in Northwest Alaska: Quaternary Research, V

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Abbott, M.B., Edwards, M.E., and Finney, B.P., 2010, a 40,000-Yr Record of Environmental Change from Burial Lake in Northwest Alaska: Quaternary Research, V Abbott, M.B., Edwards, M.E., and Finney, B.P., 2010, A 40,000-yr record of environmental change from Burial Lake in Northwest Alaska: Quaternary Research, v. 74, no. 1, p. 156– 165, doi: 10.1016/j.yqres.2010.03.007. Abels, H.A., Clyde, W.C., Gingerich, P.D., Hilgen, F.J., Fricke, H.C., Bowen, G.J., and Lourens, L.J., 2012, Terrestrial carbon isotope excursions and biotic change during Palaeogene hyperthermals: Nature Geoscience, v. 5, no. 5, p. 326–329, doi: 10.1038/ngeo1427. Adam, D.P., Sims, J.D., and Throckmorton, C.K., 1981, 130,000-yr continuous pollen record from Clear Lake, Lake County, California: Geology, v. 9, no. 8, p. 373, doi: 10.1130/0091- 7613(1981)9<373:YCPRFC>2.0.CO;2. Ahlberg, K., Almgren, E., Wright Jr, H.E., and Ito, E., 2001, Holocene stable-isotope stratigraphy at Lough Gur, County Limerick, Western Ireland: The Holocene, v. 11, no. 3, p. 367–372, doi: 10.1191/095968301674434407. AHLBERG, K., ALMGREN, E., WRIGHT, H.E., ITO, E., and HOBBIE, S., 2008, Oxygen- isotope record of Late-Glacial climatic change in western Ireland: Boreas, v. 25, no. 4, p. 257–267, doi: 10.1111/j.1502-3885.1996.tb00641.x. Alin, S.R., and Johnson, T.C., 2007, Carbon cycling in large lakes of the world: A synthesis of production, burial, and lake-atmosphere exchange estimates: Global Biogeochemical Cycles, v. 21, no. 3, p. n/a-n/a, doi: 10.1029/2006GB002881. Almendinger, J.E., Murphy, M.S., and Ulrich, J.S., 2014, Use of the soil and water assessment tool to scale sediment delivery from field to watershed in an agricultural landscape with topographic depressions.: Journal of environmental quality, v. 43, no. 1, p. 9–17, doi: 10.2134/jeq2011.0340. Anderson, L., Abbott, M.B., Finney, B.P., and Burns, S.J., 2005, Regional atmospheric circulation change in the North Pacific during the Holocene inferred from lacustrine carbonate oxygen isotopes, Yukon Territory, Canada: Quaternary Research, v. 64, no. 1, p. 21–35. Anderson, L., 2011, Holocene record of precipitation seasonality from lake calcite 18O in the central Rocky Mountains, United States: Geology, v. 39, no. 3, p. 211–214, doi: 10.1130/G31575.1. Anderson, L., 2012, Rocky Mountain hydroclimate: Holocene variability and the role of insolation, ENSO, and the North American Monsoon: Global and Planetary Change, v. 92– 93, p. 198–208, doi: 10.1016/j.gloplacha.2012.05.012. Anderson, L., Berkelhammer, M., Barron, J.A., Steinman, B.A., Finney, B.P., and Abbott, M.B., 2016, Lake oxygen isotopes as recorders of North American Rocky Mountain hydroclimate: Holocene patterns and variability at multi-decadal to millennial time scales: Global and Planetary Change, v. 137, p. 131–148, doi: 10.1016/j.gloplacha.2015.12.021. Anderson, L., Brunelle, A., and Thompson, R.S., 2015, A multi-proxy record of hydroclimate, vegetation, fire, and post-settlement impacts for a subalpine plateau, central Rocky Mountains, U.S.A: The Holocene, v. 25, no. 6, p. 932–943, doi: 10.1177/0959683615574583. Andreev, A.A., Tarasov, P.E., Wennrich, V., Raschke, E., Herzschuh, U., Nowaczyk, N.R., Brigham-Grette, J., and Melles, M., 2014, Late Pliocene and Early Pleistocene vegetation history of northeastern Russian Arctic inferred from the Lake El’gygytgyn pollen record: Climate of the Past, v. 10, no. 3, p. 1017–1039, doi: 10.5194/cp-10-1017-2014. Anger, C.T., Sueper, C., Blumentritt, D.J., McNeill, K., Engstrom, D.R., and Arnold, W.A., 2013, Quantification of Triclosan, Chlorinated Triclosan Derivatives, and their Dioxin Photoproducts in Lacustrine Sediment Cores: Environmental Science & Technology, v. 47, no. 4, p. 1833–1843, doi: 10.1021/es3045289. Anselmetti, F.S.S., Ariztegui, D., Hodell, D.A.A., Hillesheim, M.B.B., Brenner, M., Gilli, A., McKenzie, J.A.A., and Mueller, A.D.D., 2006, Late Quaternary climate-induced lake level variations in Lake Petén Itzá, Guatemala, inferred from seismic stratigraphic analysis: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 230, no. 1–2, p. 52–69, doi: 10.1016/j.palaeo.2005.06.037. Anthony, K.M.W., Zimov, S.A., Grosse, G., Jones, M.C., Anthony, P.M., Iii, F.S.C., Finlay, J.C., Mack, M.C., Davydov, S., Frenzel, P., and Frolking, S., 2014, A shift of thermokarst lakes from carbon sources to sinks during the Holocene epoch: Nature, v. 511, no. 7510, p. 452–456, doi: 10.1038/nature13560 http://www.nature.com/nature/journal/v511/n7510/abs/nature13560.html#supplementary- information. Aranbarri, J., González-Sampériz, P., Valero-Garcés, B., Moreno, A., Gil-Romera, G., Sevilla- Callejo, M., García-Prieto, E., Di Rita, F., Mata, M.P., Morellón, M., Magri, D., Rodríguez- Lázaro, J., and Carrión, J.S., 2014, Rapid climatic changes and resilient vegetation during the Lateglacial and Holocene in a continental region of south-western Europe: Global and Planetary Change, v. 114, p. 50–65, doi: http://dx.doi.org/10.1016/j.gloplacha.2014.01.003. Armstrong, J.C., Breckenridge, R.P., Nielson, D.L., Shervais, J.W., and Wood, T.R., 2013, Mountain Home Air Force Base, Idaho Geothermal Resource Assessment and Future Recommendations: RPRT. Axford, Y., Andresen, C.S., Andrews, J.T., Belt, S.T., Geirsdóttir, Á., Massé, G., Miller, G.H., Ólafsdóttir, S., and Vare, L.L., 2011, Do paleoclimate proxies agree? A test comparing 19 late Holocene climate and sea-ice reconstructions from Icelandic marine and lake sediments: Journal of Quaternary Science, v. 26, no. 6, p. 645–656, doi: 10.1002/jqs.1487. Axford, Y., Briner, J.P., Cooke, C.A., Francis, D.R., Michelutti, N., Miller, G.H., Smol, J.P., Thomas, E.K., Wilson, C.R., and Wolfe, A.P., 2009, Recent changes in a remote Arctic lake are unique within the past 200,000 years: Proceedings of the National Academy of Sciences, v. 106, no. 44, p. 18443–18446, doi: 10.1073/pnas.0907094106. Axford, Y., Briner, J.P., Miller, G.H., and Francis, D.R., 2009, Paleoecological evidence for abrupt cold reversals during peak Holocene warmth on Baffin Island, Arctic Canada: Quaternary Research, v. 71, no. 2, p. 142–149, doi: 10.1016/j.yqres.2008.09.006. Axford, Y., Geirsdottir, A., Miller, G.H., Langdon, P.G., Geirsdóttir, Á., Miller, G.H., and Langdon, P.G., 2008, Climate of the Little Ice Age and the past 2000 years in northeast Iceland inferred from chironomids and other lake sediment proxies: Journal of Paleolimnology, v. 41, no. 1, p. 7–24, doi: 10.1007/s10933-008-9251-1. Axford, Y., Miller, G.H., Geirsdóttir, Á., and Langdon, P.G., 2007, Holocene temperature history of northern Iceland inferred from subfossil midges: Quaternary Science Reviews, v. 26, no. 25–28, p. 3344–3358, doi: 10.1016/j.quascirev.2007.09.003. Bailey, H.L., Henderson, A.C.G., Sloane, H.J., Snelling, A., Leng, M.J., and Kaufman, D.S., 2014, The effect of species on lacustrine δ18Odiatom and its implications for palaeoenvironmental reconstructions: Journal of Quaternary Science, v. 29, no. 4, p. 393– 400, doi: 10.1002/jqs.2711. Baker, P.A., Fritz, S.C., Garland, J., and Ekdahl, E., 2005, Holocene hydrologic variation at Lake Titicaca, Bolivia/Peru, and its relationship to North Atlantic climate variation: Journal of Quaternary Science, v. 20, no. 7–8, p. 655–662, doi: 10.1002/jqs.987. Baker, P.A., Fritz, S.C., Silva, C.G., Rigsby, C.A., Absy, M.L., Almeida, R.P., Caputo, M., Chiessi, C.M., Cruz, F.W., Dick, C.W., Feakins, S.J., Figueiredo, J., Freeman, K.H., Hoorn, C., et al., 2015, Trans-Amazon Drilling Project (TADP): origins and evolution of the forests, climate, and hydrology of the South American tropics: Scientific Drilling, v. 20, p. 41–49, doi: 10.5194/sd-20-41-2015. Baker, P.A., and Fritz, S.C., 2015, Nature and causes of Quaternary climate variation of tropical South America: Quaternary Science Reviews, v. 124, p. 31–47, doi: http://dx.doi.org/10.1016/j.quascirev.2015.06.011. Balascio, N.L., D’Andrea, W.J., and Bradley, R.S., 2015, Glacier response to North Atlantic climate variability during the Holocene: Clim. Past, v. 11, no. 12, p. 1587–1598, doi: 10.5194/cp-11-1587-2015. Balascio, N.L., D’Andrea, W.J., Bradley, R.S., and Perren, B.B., 2013, Biogeochemical evidence for hydrologic changes during the Holocene in a lake sediment record from southeast Greenland: The Holocene,. Balch, D.P., Cohen, A.S., Schnurrenberger, D.W., Haskell, B.J., Valero Garces, B.L., Beck, J.W., Cheng, H., and Edwards, R.L., 2005, Ecosystem and paleohydrological response to Quaternary climate change in the Bonneville Basin, Utah: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 221, no. 1–2, p. 99–122, doi: 10.1016/j.palaeo.2005.01.013. Ballantyne, A.P., Axford, Y., Miller, G.H., Otto-Bliesner, B.L., Rosenbloom, N., and White, J.W.C., 2013, The amplification of Arctic terrestrial surface temperatures by reduced sea- ice extent during the Pliocene: Palaeogeography, Palaeoclimatology, Palaeoecology, , no. 0, doi: http://dx.doi.org/10.1016/j.palaeo.2013.05.002. Balogh, S.J., Triplett, L.D., Engstrom, D.R., and Nollet, Y.H., 2010, Historical trace metal loading to a large river recorded in the sediments of Lake St. Croix, USA: Journal of Paleolimnology, v. 44, no. 2, p. 517–530, doi: 10.1007/s10933-010-9434-4. Bao, R., Hernández, A., Sáez, A., Giralt, S., Prego, R., Pueyo, J.J., Moreno, A., and Valero- Garcés, B.L., 2015, Climatic and lacustrine morphometric controls of diatom paleoproductivity in a tropical Andean lake: Quaternary Science Reviews, v.
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