peer-reviewed articles

---

Sea level modulation of Atlantic nitrogen fixation over glacial cycles

Alexandra Auderset, François Fripiat, Roger Creel, Janne Repschläger, Ed Hathorne, Hubert Vonhof, … & Alfredo Martínez-García, 2024, Paleoceanography and Paleoclimatology, 39(8), e2024PA004878. DOI: 10.1029/2024PA004878

Enhanced ocean oxygenation during Cenozoic warm periods

Alexandra Auderset, Simone Moretti, Björn Taphorn, Pia-Rebecca Ebner, Emma Kast, Xingchen T. Wang, Ralf Schiebel, Daniel M. Sigman, Gerald H. Haug, & Alfredo Martínez-García, 2022 , Nature , 609 (7925) , 77--82, DOI: 10.1038/s41586-022-05017-0

Simultaneous extraction and chromatographic separation of n-alkanes and alkenones from glycerol dialkyl glycerol tetraethers via selective Accelerated Solvent Extraction

Alexandra Auderset, Mareike Schmitt, & Alfredo Martínez-García , 2020 , Organic Geochemistry , 143 (5), DOI: 10.1016/j.orggeochem.2020.103979

Gulf Stream intensification after the early Pliocene shoaling of the Central American Seaway

Alexandra Auderset, Alfredo Martínez-García, Ralf Tiedemann, Adam P. Hasenfratz, Timothy I. Eglinton, Ralf Schiebel, Daniel M. Sigman, & Gerald H. Haug , 2019 , Earth and Planetary Science Letters , 520 (8) , 268--278, DOI: 10.1016/j.epsl.2019.05.022

2024

Oxygen rise in the tropical upper ocean during the Paleocene-Eocene Thermal Maximum

Simone Moretti, Alexandra Auderset, Curtis Deutsch, Ronja Schmitz, Lukas Gerber, Ellen Thomas, ... & Alfredo Martínez-García, 2024, Science, DOI: 10.1126/science.adh4893

The Micropaleoecology Framework: Evaluating biotic responses to global change through paleoproxy, microfossil, and ecological data integration

Adam Woodhouse, Anshuman Swain, Jansen Smith, Elizabeth Sibert, Adriane Lam, Jennifer Dunne and  Alexandra Auderset, 2024, Ecology and Evolution, DOI: 10.1002/ece3.70470

The southward migration of the Antarctic Circumpolar Current enhanced oceanic degassing of carbon dioxide during the last two deglaciations

Xuyuan E. Ai, Lena M. Thöle, Alexandra Auderset, Mareike Schmitt, Simone Moretti, ... and Samuel L. Jaccard, 2024, Communications & Earth Environment, DOI: 10.1038/s43247-024-01216-x

Reconstruction of warm season temperatures in central Europe during the past 60,000 years from lacustrine GDGTs

Paul Zander, Daniel Böhl, Frank Sirocko, Alexandra Auderset, Gerald Haug, & Alfredo Martínez-García, 2024, Climate of the Past,  DOI: 10.5194/cp-20-841-2024, 2024

A marine record of Patagonian ice sheet changes over the past 140,000 years

Julia R. Hagemann, Frank Lamy, Helge W. Arz, Lester Lembke-Jene, Alexandra Auderset, Naomi Harada,... & Ralf Tiedemann, 2024, PNAS, DOI: 10.1073/pnas.2302983121

Probing the open ocean with the research sailing yacht Eugen Seibold for climate geochemistry

Ralf Schiebel, Hedy Aardema , Maria Calleja , Antonis Dragoneas , Lena Heins , ..., Alexandra Auderset, ... & Gerald H. Haug, N, 2024, Journal of Geophysical Research: Atmospheres, 129(17), e2023JD040581. DOI:10.1029/2023JD040581 

Tracking Agulhas leakage in the South Atlantic using modern planktic foraminifera nitrogen isotopes

Robyn Granger, Sandi Smart, Alan Foreman, Alexandra Auderset, Ethan Campbell, ... & Sarah E. Fawcett, 2024, Geochemistry, Geophysics, Geosystems, 25(9), e2023GC011190. DOI:10.1029/2023GC011190

2023

Analytical improvements and assessment of long-term performance of the oxidation-denitrifier method

Simone Moretti, Nicolas N. Duprey, Alan D. Foreman, Anthea Arns, Sven Brömme, Jonathan Jung, Xuyuan E. Ai, Alexandra Auderset, ... & Alfredo Martínez-García, 2023, Rapid Communications in Mass Spectrometry, DOI: 10.1002/rcm.9650

Nitrogen isotopic composition as a gauge of tumor cell anabolism-to-catabolism ratio

Marietta Straub, Alexandra Auderset, Laurence de Leval, Nathalie Piazzon, Damien Maison, ... & Alfredo Martínez-García, 2023, Scientific Reports, 13(1), 19796 DOI: 10.1038/s41598-023-45597-z

A well oxygenated eastern tropical Pacific during the warm Miocene

Anya V. Hess, Alexandra Auderset, Yair Rosenthal, Kenneth G. Miller, Xiaoli Zhou, Daniel M. Sigman & Alfredo Martínez-García, 2023, Nature, 1-5 DOI: 10.1038/s41586-023-06104-6

The impact of incomplete nutrient consumption in the Southern Ocean on global mean ocean nitrate δ15N

François Fripiat, Daniel M. Sigman, Alfredo Martínez-García, Dario Marconi, Xuyuan Ai, Alexandra Auderset, ... & Gerald H. Haug, 2023, Global Biogeochemical Cycles, 37(2), e2022GB007442 DOI: 10.1029/2022GB007442

2022

Oceanic nutrient rise and the late Miocene inception of Pacific oxygen-deficient zones

Xingchen Tony Wang, Yuwei Wang, Alexandra Auderset, Daniel M. Sigman, Haojia Ren, Alfredo Martínez-García, ... & Woodward W. Fischer, 2022 , PNAS , 119 (45) DOI: 10.1073/pnas.2204986119

Laboratory assessment of the impact of chemical oxidation, mineral dissolution, and heating on the nitrogen isotopic composition of fossil‐bound organic matter

Alfredo Martínez‐García, Jonathan Jung, Xuyuan E. Ai, Daniel M. Sigman, Alexandra Auderset, Nicolas N. Duprey, ... & Tanja Wald , 2022 , Geochemistry, Geophysics, Geosystems , 23 (8) DOI: 10.1029/2022GC010396

2021

Distinct nitrogen isotopic compositions of healthy and cancerous tissue in mice brain and head&neck micro-biopsies

Marietta Straub, Daniel M. Sigman, Alexandra Auderset, Jonathan Ollivier, B. Petit, Barbara Hinnenberg, ... & A. Martínez-García, 2021 , BMC cancer , 21 DOI: 10.1186/s12885-021-08489-x

2020

Coupled Southern Ocean cooling and Antarctic ice sheet expansion during the middle Miocene

Thomas J. Leutert, Alexandra Auderset, Alfredo Martínez-García, Sevasti Modestou, & A. Nele Meckler , 2020 , Nature Geoscience , 13 (8) , 634–639, DOI: 10.1038/s41561-020-0623-0

2019

Glacial Indonesian Throughflow weakening across the Mid-Pleistocene Climatic Transition

Benjamin Petrick, Alfredo Martínez-García, Gerald Auer, Lars Reuning, Alexandra Auderset, Hanaa Deik, ... & Gerald H. Haug , 2019 , Scientific Reports , 9 (11), DOI: 10.1038/s41598-019-53382-0

Glacial-interglacial dust and export production records from the Southern Indian Ocean

Lena M. Thöle, H. Eri Amsler, Simone Moretti, Alexandra Auderset, James Gilgannon, Jörg Lippold, ... & Samuel L. Jaccard , 2019 , Earth and Planetary Science Letters , 525 (11), DOI: 10.1016/j.epsl.2019.115716

Nitrogen isotope evidence for expanded ocean suboxia in the early Cenozoic

Emma R. Kast, Daniel A. Stolper, Alexandra Auderset, John A. Higgins, Haojia Ren, Xingchen T. Wang, ... & Daniel M. Sigman , 2019 , Science , 364 (6438) , 386--389, DOI: 10.1126/science.aau5784

Enhanced deep-sea methane release during the warm Miocene

Alexandra Auderset, Gordon Inglis, Jesse Farmer and Alfredo Martínez-García, Science, in review

Effects of photosymbiosis and related processes on planktic foraminifera-bound nitrogen isotopes in South Atlantic sediments

Alexandra Auderset, Sandi Smart, Yeongjun Ryu, Dario Marconi, Haojia Abby Ren, ... & Alfredo Martínez-García, 2024. Biogeosciences, in review

(preprint: https://doi.org/10.5194/egusphere-2024-2291)

Reviews and syntheses: Review of proxies for low-oxygen paleoceanographic reconstructions

Babette Hoogakker,  Catherine Davis, Yi Wang, Stephanie Kusch, Katrina Nilsson-Kerr, ..., Alexandra Auderset, ... and Yuxin Zhou, Biogeosciences, accepted

(preprint: https://egusphere.copernicus.org/preprints/2024/egusphere-2023-2981/)

Reduced equatorial Pacific upwelling and carbon export during the Middle Miocene

Alexandra Auderset, Daniel Sigman & Alfredo Martínez-García, in prep.

MioOcean - Database compilation and application of temperature proxies in the Miocene oceans

Sindia Sosdian, Alexandra Auderset, Sevi Modestou, Ann Holbourn & MioOcean working group, in prep. for Earth System Science Data (ESSD)

MioTEX - A comprehensive GDGT-based sea surface temperature compilation for the Miocene

Alexandra Auderset, Xiaoqing Liu, Neeraj S. Shah, Sarah Feakins, Francesca Sangiorgi, ... & Yige Zhang, in prep. for Earth System Science Data (ESSD)

MioMg - Reconstructing robust ocean temperatures from Miocene foraminiferal Mg/Ca records

Sindia Sosdian, Karlos Kochann, Anya Hess, Alexandra Auderset & MioMg working group, in prep. for Earth System Science Data (ESSD)