Alex Auderset
Anniversary Fellow at University of Southampton | Paleoclimatologist | Foram-bound d15N & d13C | Biomarkers | Cenozoic climate | Foram ecology | GO VEGAN!
- Reposted by Alex Auderset🚨New paper out with @alexauderset.bsky.social! We show that the Arabian Sea oxygen minimum zone (OMZ) was better oxygenated during the warm Miocene Climate Optimum than today, but its path to full deoxygenation was slow and complex. Link to paper: www.nature.com/articles/s43...
- Reposted by Alex AudersetOur researchers @sotonoceanearth.bsky.social have examined 5 million year old plankton fossils as part of an international research project 🌊 The study suggests tropical Pacific Ocean ecosystems may be more resilient to climate warming than first feared. Find out more 👉 tr.ee/BpAlpo
- Reposted by Alex AudersetToday, we published a study long in the making on how upper and subsurface tropical Pacific waters responded (and maybe will adjust) to warmer global climate. Here’s the story of how we got here after 15 years. many authors but shout out @jfarmersalmanac.bsky.social 🌊 www.science.org/doi/10.1126/...
- Reposted by Alex AudersetVery excited to be a part of this epic journey with @oceanandclimate.bsky.social. Check out our #NSFfunded paper published in @science.org today & his thread below. After that, come back here for more... (1/n)
- Today, we published a study long in the making on how upper and subsurface tropical Pacific waters responded (and maybe will adjust) to warmer global climate. Here’s the story of how we got here after 15 years. many authors but shout out @jfarmersalmanac.bsky.social 🌊 www.science.org/doi/10.1126/...
- Nitrogen isotopes are a promising tool to reconstruct symbiosis in planktic foraminifera! Check out our latest paper: bg.copernicus.org/articles/22/...
- In this study we show that foraminifera-bound nitrogen isotopes (FB-δ15N) distinguish between symbiont-bearing and symbiont-barren foraminifera. FB-δ15N shows a clear signal of dinoflagellate symbiosis and may even identify other symbionts like chrysophytes or pelagophytes.
- However, we also show that this relationship can be more complex in regions with strong environmental gradients, where additional factors influence nitrogen isotopes.
- Nevertheless, this new approach to studying symbiosis offers a novel pathway to reconstruct paleo-symbiosis in extinct foraminifera—an essential piece of information for interpreting numerous geochemical proxies.
- Nitrogen isotope paper published in Paleoceanography and Paleoclimatology, go check it out :) doi.org/10.1029/2024...
- Reposted by Alex AudersetPacked room at EGU for @alexauderset.bsky.social talk on ocean deoxygenation in past warm climates!
