Hannah Palmer

Hannah Palmer
University of California, Merced | UCM · Department of Life and Environmental Sciences

Doctor of Philosophy

About

11
Publications
828
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28
Citations
Introduction
I am a climate scientist, particularly interested in investigating biogeochemistry of a changing world, impacts of environmental change on ecosystems, and human dimensions of global change. I leverage the paleorecord to understand biogeochemical and ecosystem change across systems and timescales. I am currently a University of California, Merced Chancellor's Postdoctoral Fellow investigating geochemistry of wildfire-impacted landscapes.

Publications

Publications (11)
Article
Full-text available
In the face of ongoing marine deoxygenation, understanding timescales and drivers of past oxygenation change is of critical importance. Marine sediment cores from tiered silled basins provide a natural laboratory to constrain timing and implications of oxygenation changes across multiple depths. Here, we reconstruct oxygenation and environmental ch...
Article
Full-text available
The shells of marine invertebrates can serve as high-resolution records of oceanographic and atmospheric change through time. In particular, oxygen and carbon isotope analyses of nearshore marine calcifiers that grow by accretion over their lifespans provide seasonal records of environmental and oceanographic conditions. Archaeological shell midden...
Preprint
Full-text available
The shells of marine invertebrates can serve as high-resolution records of oceanographic and atmospheric change through time. In particular, oxygen and carbon isotope analyses of nearshore marine calcifiers that grow by accretion over their lifespans provide seasonal records of environmental and oceanographic conditions. Archaeological shell midden...
Preprint
Full-text available
To understand and contextualize modern climate change, we must improve our understanding of climatic and oceanographic changes in the Holocene (11.75 ka–present). Climate records of the Holocene can be utilized as a “baseline” from which to compare modern climate and can also provide insights into how environments and ecosystems experience and reco...
Article
Full-text available
Marine protists are integral to the structure and function of pelagic ecosystems and marine carbon cycling, with rhizarian biomass alone accounting for more than half of all mesozooplankton in the oligotrophic oceans. Yet, understanding how their environment shapes diversity within species and across taxa is limited by a paucity of observations of...
Article
Full-text available
Microfossil assemblages provide valuable records to investigate variability in continental margin biogeochemical cycles, including dynamics of the oxygen minimum zone (OMZ). Analyses of modern assemblages across environmental gradients are necessary to understand relationships between assemblage characteristics and environmental factors. Five cores...
Preprint
Full-text available
Abstract. Microfossil assemblages provide valuable records to investigate variability in continental margin biogeochemical cycles, including dynamics of the oxygen minimum zone (OMZ). Analyses of modern assemblages across environmental gradients are necessary to understand relationships between assemblage characteristics and environmental factors....

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