Research Publications

Publications by Julio Sepúlveda

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Matys, E. D., Julio Sepúlveda, Pantoja, S., Lange, C. B., Caniupan, M., Lamy, F., Summons, R. E. 2017: Bacteriohopanepolyols along redox gradients in the Humboldt Current System off northern Chile. Geobiology, early online view. DOI: 10.1111/gbi.12250

Srain, B., Pantoja, S., Julio Sepúlveda, Lange, C., Muñoz, P., Summons, R.E., McKay, J., Salamanca, M. 2015: Interdecadal changes in intensity of the oxygen minimum zone off Concepción, Chile ( ~36°S) over the last century. Biogeosciences, 12, 6045–6058. DOI: 10.5194/bg-12-6045-2015

Srain, B., Julio Sepúlveda, Pantoja, S., Summons, R. E., Quiñones, R. A., Levipan, H. A. 2015: Archaeal and bacterial assemblages in the Oxygen Minimum Zone of the upwelling ecosystem off central Chile as determined by organic biomarkers. Gayana, 79(1): 26-44.

Kasprak, A. H., Julio Sepúlveda, Price-Waldman, R., Williford, K. H., Schoepfer, S. D., Haggart, J. W., Ward, P. D., Summons, R. E., Whiteside, J. H. 2015: Episodic photic zone euxinia in the northeastern Panthalassic Ocean during the end-Triassic extinction. Geology, 43(4): 307-310. DOI: 10.1130/G36371.1

Bertrand, S., Hughen, K., Julio Sepúlveda, Pantoja, S. 2014: Late Holocene covariability of the southern westerlies and sea surface temperature in northern Chilean Patagonia. Quaternary Science Reviews, 105: 195-208. DOI: 10.1016/j.quascirev.2014.09.021

French, K. L., Julio Sepúlveda, Trabucho-Alexandre, J., Gröcke, D. R., Summons, R. E. 2014: Organic geochemistry of the early Toarcian oceanic anoxic event in Hawsker Bottoms, Yorkshire, England. Earth and Planetary Science Letters, 390: 116-127. DOI: 10.1016/j.epsl.2013.12.033

Bertrand, S., Hughen, K. A., Julio Sepúlveda, Pantoja, S. 2012: Geochemistry of surface sediments from the fjords of Northern Chilean Patagonia (44–47°S): Spatial variability and implications for paleoclimate reconstructions. Geochimica et Cosmochimica Acta, 76: 125-146. DOI: 10.1016/j.gca.2011.10.028

Julio Sepúlveda, Pantoja, S., Hughen, K. A. 2011: Sources and distribution of organic matter in northern Patagonia fjords, Chile (∼44–47°S): A multi-tracer approach for carbon cycling assessment. Continental Shelf Research, 31(3-4): 315-329. DOI: 10.1016/j.csr.2010.05.013

Julio Sepúlveda, Wendler, J. E., Summons, R. E., Hinrichs, K.-U. 2009: Rapid resurgence of marine productivity after the Cretaceous-Paleogene mass extinction. Science, 326(5949): 129-132. DOI: 10.1126/science.1176233

Arreguín-Rodríguez, G. J., Alegret, L., Julio Sepúlveda, Newman, S., Summons, R. E. 2014: Enhanced terrestrial input supporting the Glomospira acme across the Paleocene-Eocene boundary in southern Spain. Micropaleontology, 60: 43-51.

Hackett, P., Julio Sepúlveda, McCarthy, K. 2011: Improving climate change education: A geoscientific and psychological collaboration. In Fisher, Y. and Friedman, A. (eds.), New horizons for facet theory: Interdisciplinary collaboration – searching for structure in content, spaces and measurement. United Kingdom: FTA Publications, 171-178.

Julio Sepúlveda, Silvio Pantoja, S., Hughen, K. A., Bertrand, S., Figueroa, D., León, T., Drenzek, N. J., Lange, C. 2009: Late Holocene sea-surface temperature and precipitation variability in northern Patagonia, Chile (Jacaf Fjord, 44°S). Quaternary Research, 72(3): 400-409. DOI: 10.1016/j.yqres.2009.06.010

Julio Sepúlveda, Wendler, J., Leider, A., Kuss, H.-J., Summons, R. E., Hinrichs, K.-U. 2009: Molecular isotopic evidence of environmental and ecological changes across the Cenomanian–Turonian boundary in the Levant Platform of central Jordan. Organic Geochemistry, 40(5): 553-568. DOI: 10.1016/j.orggeochem.2009.02.009

Rebolledo, L., Julio Sepúlveda, Lange, C. B., Pantoja, S., Bertrand, S., Hughen, K., Figueroa, D. 2008: Late Holocene marine productivity changes in Northern Patagonia-Chile inferred from a multi-proxy analysis of Jacaf channel sediments. Estuarine, Coastal and Shelf Science, 80(3): 314-322. DOI: 10.1016/j.ecss.2008.08.016

Lange C., Pantoja, S., Rebolledo, L., Julio Sepúlveda, Figueroa, D. 2007: Paleoclimatic archives from Chilean fjord sediments. Centro de Investigación Oceanográfica en el Pacífico Sur-Oriental, Universidad de Concepción, Chile. Newsletter 14, 1-2.

Julio Sepúlveda, Pantoja, S., Hughen, K., Lange, C., Gonzalez, F., Muñoz, P., Rebolledo, L., Castro, R., Contreras, S., Ávila, A., Rossel, P., Lorca, G., Salamanca, M. Silva, N. 2005: Fluctuations in export productivity over the last century from sediments of a southern Chilean fjord (44°S). Estuarine, Coastal and Shelf Science, 65(3): 587-600. DOI: 10.1016/j.ecss.2005.07.005

Harada, N., Ahagon, N., Lange, C. B., Asahara, Y., Pantoja, S., Marchant, M., Mishima, T., Kanke, H., Tapia, R. I., Julio Sepúlveda, Santis, A. J. A., Katsuki, K., Matsuura, Y., Sato, Y., Maeda, R., Ueno, T., Tokunaga, W., Kimura, R., Nagahama, N. 2005: Basic physical properties of sediment cores collected in the Chilean marginal area and Magellan Strait during leg.3 of cruise MR03-K04. JAMSTEC Report Res. Dev. 2, 13-27.

Pantoja, S., Julio Sepúlveda, González, H. 2004: Decomposition of sinking proteinaceous material during fall in the oxygen minimum zone off northern Chile. Deep Sea Research I, 51: 55-70. DOI: 10.1016/j.dsr.2003.09.005