[Enviro-lunch] Enviro-lunch seminar (5/2): Dr. Genevieve Noyce from Smithsonian Environmental Research Center on coastal wetland biogeochemistry

[Kyungjin Min]

[image: image.png]

Hello all,



Next Monday (5/2), our last speaker Dr. Genevieve Noyce from Smithsonian
Environmental Research Center will present her research on plant-microbe
interactions in coastal wetlands. Please join us between 12-1 pm (pacific)
via zoom.



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




*Title:* Coastal wetlands in a changing world

*Abstract*: Coastal wetlands are hotspots of carbon sequestration that
regulate the biogeochemistry of coastal rivers, estuaries, and continental
shelves, yet these ecosystems are highly vulnerable to global change.
Wetland responses to global change can be complex because wetland plants
simultaneously regulate supplies of electron donors (organic carbon) and
electron acceptors (molecular oxygen), influencing microbial activity. The
Salt Marsh Accretion Response to Temperature eXperiment (SMARTX) was
established at the Smithsonian’s Global Change Research Wetland in 2016 to
increase our understanding of how the complex interactions between plants,
microbes, and hydrology will respond to global climate change. In SMARTX,
we actively manipulate whole-ecosystem temperature through
feedback-controlled heating from the plant canopy to 1.5 m soil depth as
well as atmospheric CO2 concentration. Over the past 6 years, we have found
that warming and elevated CO2 generally increase aboveground net primary
productivity (NPP) but have more complex and non-linear effects on
belowground NPP. These non-linear belowground plant responses are driving
key soil biogeochemical processes such as redox potential, soil carbon
sequestration, and methane (CH4) emissions, affecting the radiative forcing
potential of the ecosystem.
[image: Genevieve census_square.jpg]

*Bio: *Genevieve Noyce is a research scientist at the Smithsonian
Environmental Research Center, where she has been a part of the
Biogeochemistry Lab since 2016. She has a BA in

environmental science from Mount Holyoke College, a MS in earth science
from the University of New Hampshire, a MS in math from King’s College
London, and a PhD in physical geography from the University of Toronto.
Genevieve has worked in both forests and wetlands, studying soil microbial
ecology and biogeochemistry, but her current research mainly focuses on
plant-microbe interactions in coastal wetlands and how these dynamics shape
ecosystem resiliency to global change.



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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