ORCID Profile
0000-0002-7923-1973
Current Organisation
Princeton University
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Publisher: American Association for the Advancement of Science (AAAS)
Date: 04-11-2016
Abstract: New isotopic and microstructural data suggest that the Tethyan Triassic corals were predominantly photosymbiotic.
Publisher: Proceedings of the National Academy of Sciences
Date: 02-11-2022
Abstract: The modern Pacific Ocean hosts the largest oxygen-deficient zones (ODZs), where oxygen concentrations are so low that nitrate is used to respire organic matter. The history of the ODZs may offer key insights into ocean deoxygenation under future global warming. In a 12-My record from the southeastern Pacific, we observe a ‰ increase in foraminifera-bound nitrogen isotopes ( 15 N/ 14 N) since the late Miocene (8 to 9 Mya), indicating large ODZs expansion. Coinciding with this change, we find a major increase in the nutrient content of the ocean, reconstructed from phosphorus and iron measurements of hydrothermal sediments at the same site. Whereas global warming studies cast seawater oxygen concentrations as mainly dependent on climate and ocean circulation, our findings indicate that modern ODZs are underpinned by historically high concentrations of seawater phosphate.
Publisher: Elsevier BV
Date: 05-2016
Publisher: Elsevier BV
Date: 05-2014
Publisher: Elsevier BV
Date: 08-2018
Publisher: Elsevier BV
Date: 12-2015
Publisher: Elsevier BV
Date: 2022
Publisher: Springer Science and Business Media LLC
Date: 11-10-2014
Publisher: Elsevier BV
Date: 2016
Publisher: Elsevier BV
Date: 2015
Location: United States of America
No related grants have been discovered for Daniel Sigman.