[Enviro-lunch] Enviro-lunch (2/14): Dr. Alyssa Griffin on coastal carbon cycling

[Kyungjin Min]

[image: image.png]

Hello all,



Next Monday (2/14) Dr. Alyssa Griffin, UC Davis Chancellor’s Postdoctoral
Fellow, will present about coastal carbon cycling. Please join us between
12-1 pm (pacific) via zoom.



https://ucmerced.zoom.us/j/175736103



Title: Carbon cycling in coastal marine sediments: Implications for past,
present, and future climates



Abstract: The exchange of carbon dioxide from the atmosphere, into the
ocean, and its sequestration in marine sediments is a fundamental control
of the global carbon cycle and in turn, Earth’s climate through time. A
comprehensive understanding of the processes that control marine sediment
biogeochemistry can strengthen our interpretations of past climates,
constrain present carbon fluxes, and improve predictions of the planet’s
future climate trajectory. However, several critical aspects related to the
role of marine sediments in both local and global carbon dynamics remain
poorly understood. For example, what are the micro- to macroscale controls
of carbon cycling in modern marine sediments? How does the biogeochemical
processing of carbon in marine sediments influence our reconstructions of
the geologic past? And how will the processing, storage, and fluxes of
carbon in marine sediments respond to future climate change and other
anthropogenic stressors? In this talk, I will share insights into these
questions from different nearshore marine environments and coastal
sedimentary systems around the world. Using complimentary field- and
laboratory-based experimental approaches and a suite of analytical tools, I
will elucidate multiple complexities of carbon cycling in coastal marine
sediments and potential implications for past, present, and future
climates. Deeply interwoven with this work is building the collaborative
and diverse global effort needed to address the climate crisis. I will
share insights from my efforts to support, amplify, and center the voices
of those most impacted by the current and future consequences of climate
change.


[image: image.png]

Bio: Dr. Alyssa Griffin is a marine geochemist studying carbon cycling in
coastal ecosystems and working towards a more just, equitable and inclusive
geoscience community. She earned bachelor’s and master’s degrees in Geology
from Temple University in her hometown of Philadelphia before working as a
Staff Geologist at a leading environmental consulting firm. Her irrefutable
passion for scientific research and education led her to pursue a doctoral
degree at Scripps Institution of Oceanography where she studied the role of
sedimentary carbonate dissolution in shallow coral reefs. She is currently
a University of California (UC) Davis Chancellor’s Postdoctoral Fellow and
member of the Ocean Climate Lab at UC Davis’ Bodega Marine Laboratory.
There, she is researching carbon cycling in temperate seagrasses and other
coastal ecosystems. Throughout her career, Dr. Griffin has continually
worked to dismantle barriers for future geoscientists and has received
multiple honors for these efforts, including the 2018 UC San Diego
Inclusive Excellence Award. Dr. Griffin looks forward to continuing to
develop geochemical research that centers those most impacted by
environmental change and leads to more just, innovative, and inclusive
solutions.



Sincerely,

co-host: KJ Min & Manisha Dolui

Faculty coordinator: Asmeret Asefaw Berhe

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Spring 2022 Enviro-Lunch Schedule

*date*

*speaker*

*title*

*1/31*

Mariela Garcia Arrendondo
@ Umass-Amherst

Root-mediated weathering

*2/7*

Michael Philben
@ Hope College

Rethinking carbon and nitrogen isotope fractionation during soil organic
matter decomposition

*2/14*

Alyssa Griffin*
@ UC Davis

The role of coastal marine sediments in carbon cycling from local to global
scales

*2/21*

Presidents’ day



*2/28*

Katherine Heckman
@ USDA

Density fractionation and soil carbon stabilization

*3/7*

Bhavna Arora
@ LBNL

Reactive transport modeling

*3/14*

Darian Smercina
@ PNNL

Free N fixing under switchgrass (Linking microbial scale processes to
ecosystem function)

*3/21*

spring break



*3/28*

Meng Zhao
@ Stanford U

Plant-water relationship (evapotranspiration) modeling

*4/4*

Hannah Naughton
@ LBNL

Root vs. topographic generation of redox anomalies on a subalpine hillslope
and floodplain

*4/11*

Michael Rowley
@ LBNL

Ca-mediated soil organic carbon stabilization

*4/18*

Weiyu Li*
@ Stanford U

Data-driven hydraulic modeling

*4/25*

Daniel Zuleta

@ Smithsonian Institute

Tree mortality in tropical ecosystems

*5/2*

Genevieve Noyce
@ Smithsonian Institute

Greenhouse gas emissions from wetland with climate change
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