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Hello all,</div>
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Please join us today (4/4) for our Enviro-lunch seminar series <span style="background-color:rgb(255, 255, 255);display:inline !important">
between 12-1 pm (pacific) via zoom</span>. Today our guest speaker is Dr. Hannah Naughton from Lawrence Berkeley National Laboratory who will be presenting her research on redox processes in soils.
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<span style="margin:0px"><span style="margin:0px"> </span></span></p>
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<a href="https://ucmerced.zoom.us/j/175736103" data-auth="NotApplicable" style="margin:0px;color:rgb(5, 99, 193);text-decoration:underline"><span style="margin:0px">https://ucmerced.zoom.us/j/175736103</span></a><span class="x_gmail-MsoHyperlink" style="margin:0px;color:rgb(5, 99, 193);text-decoration:underline"><span style="margin:0px"><span style="margin:0px"></span></span></span></p>
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<span style="margin:0px"><span style="margin:0px"> </span></span></p>
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<b>Title:</b><span> </span><span style="margin:0px">Determining landscape drivers of redox anomalies in upland and floodplain soils</span></p>
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See you all soon!</div>
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Manisha and KJ</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Enviro-lunch <enviro-lunch-bounces@lists.ucmerced.edu> on behalf of Kyungjin Min <kjmin.21@gmail.com><br>
<b>Sent:</b> Tuesday, March 29, 2022 11:16 AM<br>
<b>To:</b> enviro-lunch@lists.ucmerced.edu <enviro-lunch@lists.ucmerced.edu><br>
<b>Subject:</b> [Enviro-lunch] Enviro-Lunch (4/4): Dr. Hannah Naughton from Lawrence Berkeley National Lab on soil redox processes</font>
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<span>Hello all,<span></span></span></p>
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<span><span> </span></span></p>
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<span>Next Monday (4/4) Dr. Hannah Naughton from Lawrence Berkeley National Laboratory will present redox processes in soils. Please join us between 12-1 pm (pacific) via zoom.
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<span><span> </span></span></p>
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<a href="https://ucmerced.zoom.us/j/175736103" data-auth="NotApplicable" style="color:rgb(5,99,193); text-decoration:underline"><span>https://ucmerced.zoom.us/j/175736103</span></a><span class="x_gmail-MsoHyperlink" style="color:rgb(5,99,193); text-decoration:underline"><span><span></span></span></span></p>
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<b>Title:</b> <span>Determining landscape drivers of redox anomalies in upland and floodplain soils<span></span></span></p>
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<b>Abstract</b>: <span>Soils vary vastly in architecture and chemical composition at the landscape scale (km) and microscale (cm), resulting in variable responses to hydrologic events.<span>
</span>Within aerobic upland soils, high organic matter and limited oxygen diffusion result in local anoxia ranging in spatial scale from microns to centimeters.<span>
</span>These redox anomalies can heavily skew predictions of carbon and greenhouse gas cycling made based on bulk soil information.<span>
</span>I will explain how soil structure-imposed redox gradients control soil carbon quality and potential for preservation in upland soils using laboratory soil reactors and then highlight similar findings in a series of hydrologically unique sites along a
subalpine floodplain.<span> </span>Because soil structure occurs over small scales relative to those at which ecosystem processes like carbon and nitrogen fluxes are modeled, I will explain how these and other biogeochemical patterns resulting from structured
soil may be underrepresented in landscape models.<span> </span>Finally, I will introduce an experimental design testing whether remotely sensible landscape features can proxy for soil structure and thus help predict soil redox heterogeneity and function.<span>
</span>Here I discuss my ongoing research at a hillslope meadow in the East River valley in Colorado testing for the presence of anaerobic microsites associated with plant roots and topographic position – two factors known to affect soil architecture and wetness,
which both control soil redox heterogeneity.<span> </span>This work seeks to illuminate new drivers of redox anomaly hot spots in soils with the ultimate goal of tying remotely sensible features of plant community and topography to soil redox heterogeneities
for improving carbon stock and cycling predictions. <span></span></span></p>
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<b><span><span> </span></span></b><span></span></p>
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<b>Bio: </b><span>Hannah is an NSF Postdoctoral Research Fellow working in the Climate and Ecosystem Sciences Division at Lawrence Berkeley National Laboratory under Dr. Eoin Brodie.<span>
</span>Her expertise is in soil biogeochemistry with a focus on microbial carbon processing.<span>
</span>She studies how the physical heterogeneity of soil environments affects local chemistry and ability of microorganisms to decompose and respire organic carbon, thus linking the terrestrial and atmospheric carbon cycles.<span>
</span>Hannah’s ultimate goal is to improve predictions of microbial carbon processing from spatially and temporally short timescales using field and laboratory work to landscape scales using machine learning and remote sensing.<span>
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<span>Hannah received a Ph.D. in Earth System Science from Stanford University in 2020 after completing an M.S. degree in Conservation Ecology from the University of Michigan, Ann Arbor, in 2014 with a focus on biodiversity and ecosystem function.<span>
</span>Her alma mater is the College of William & Mary, where she received a B.S. in Chemistry and Biology in 2012.<span>
</span>She has assistant-taught inorganic, physical and organic chemistry in addition to soil science courses and has mentored teachers, high school and undergraduate students in both research and professional development contexts.<span>
</span>Outside of lab, she enjoys playing the piano, climbing and walking through nature.<span>
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<span style="font-size:11pt; font-family:"Calibri",sans-serif; color:black">Sincerely,</span><span style="font-size:11pt; font-family:"Calibri",sans-serif"><span></span></span></p>
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<span>co-host: KJ Min & Manisha Dolui<span></span></span></p>
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<span>Faculty coordinator: Asmeret Asefaw Berhe<span></span></span></p>
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<span>Spring 2022 Enviro-Lunch Schedule<span></span></span></p>
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<b><span style="color:white">date</span><span style="color:white"><span></span></span></b></p>
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<b><span style="color:white">speaker</span><span style="color:white"><span></span></span></b></p>
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<b><span style="color:white">title</span><span style="color:white"><span></span></span></b></p>
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<b><span style="color:black">1/31</span><span></span></b></p>
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<span style="color:black">Mariela Garcia Arrendondo<br>
</span><span style="font-size:8pt; color:black">@ Umass-Amherst</span><span></span></p>
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<span style="color:black">Root-mediated weathering</span><span></span></p>
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<b><span style="color:black">2/7</span><span></span></b></p>
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<span>Michael Philben<br>
</span><span style="font-size:8pt">@ Hope College</span><span></span></p>
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<span style="color:black">Rethinking carbon and nitrogen isotope fractionation during soil organic matter decomposition</span><span></span></p>
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<b><span style="color:black">2/14</span><span></span></b></p>
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<span style="color:black">Alyssa Griffin*<br>
</span><span style="font-size:8pt; color:black">@ UC Davis</span><span style="color:black">
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<span style="color:black">The role of coastal marine sediments in carbon cycling from local to global scales</span><span></span></p>
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<b><span style="color:red">2/21</span><span style="color:red"><span></span></span></b></p>
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<span style="color:red">Presidents’ day</span><span style="color:red"><span></span></span></p>
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<span style="color:red"><span> </span></span></p>
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<b><span style="color:black">2/28</span><span></span></b></p>
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<span style="color:black">Katherine Heckman<br>
</span><span style="font-size:8pt; color:black">@ USDA</span><span></span></p>
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<span style="color:black">Density fractionation and soil carbon stabilization</span><span></span></p>
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<b><span style="color:black">3/7</span><span></span></b></p>
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<span>Bhavna Arora<br>
</span><span style="font-size:8pt">@ LBNL</span><span></span></p>
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<span style="color:black">Reactive transport modeling</span><span></span></p>
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<b><span style="color:black">3/14</span><span></span></b></p>
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<span style="color:black">Darian Smercina <br>
</span><span style="font-size:8pt; color:black">@ PNNL</span><span></span></p>
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<span style="color:black">Free N fixing under switchgrass (Linking microbial scale processes to ecosystem function)</span><span></span></p>
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<b><span style="color:red">3/21</span><span style="color:red"><span></span></span></b></p>
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<span style="color:red">spring break</span><span style="color:red"><span></span></span></p>
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<span style="color:red"><span> </span></span></p>
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<b><span style="color:black">3/28</span><span></span></b></p>
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<span style="color:black">Meng Zhao<br>
</span><span style="font-size:8pt; color:black">@ Stanford U</span><span></span></p>
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<span style="color:black">Plant-water relationship (evapotranspiration) modeling</span><span></span></p>
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<b><span style="color:black">4/4</span><span></span></b></p>
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<span>Hannah Naughton<br>
</span><span style="font-size:8pt">@ LBNL</span><span></span></p>
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<p class="x_MsoNormal" style="margin:0in; line-height:normal; font-size:11pt; font-family:"Calibri",sans-serif">
<span style="color:black">Root vs. topographic generation of redox anomalies on a subalpine hillslope and floodplain</span><span></span></p>
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<b><span style="color:black">4/11</span><span></span></b></p>
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<span style="color:black">Michael Rowley<br>
</span><span style="font-size:8pt; color:black">@ LBNL</span><span></span></p>
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<p class="x_MsoNormal" style="margin:0in; line-height:normal; font-size:11pt; font-family:"Calibri",sans-serif">
<span style="color:black">Ca-mediated soil organic carbon stabilization</span><span></span></p>
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<b><span style="color:black">4/18</span><span></span></b></p>
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<span>Weiyu Li*<br>
</span><span style="font-size:8pt">@ Stanford U</span><span></span></p>
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<p class="x_MsoNormal" style="margin:0in; line-height:normal; font-size:11pt; font-family:"Calibri",sans-serif">
<span style="color:black">Data-driven hydraulic modeling</span><span></span></p>
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<b><span style="color:black">4/25</span><span></span></b></p>
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<span style="color:black">Daniel Zuleta</span><span><span></span></span></p>
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<span style="font-size:8pt; color:black">@ Smithsonian Institute</span><span></span></p>
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<p class="x_MsoNormal" style="margin:0in; line-height:normal; font-size:11pt; font-family:"Calibri",sans-serif">
<span style="color:black">Tree mortality in tropical ecosystems</span><span></span></p>
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<b><span style="color:black">5/2</span><span></span></b></p>
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<span>Genevieve Noyce<br>
</span><span style="font-size:8pt">@ Smithsonian Institute</span><span></span></p>
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<p class="x_MsoNormal" style="margin:0in; line-height:normal; font-size:11pt; font-family:"Calibri",sans-serif">
<span style="color:black">Greenhouse gas emissions from wetland with climate change</span><span></span></p>
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<span><span> </span></span></p>
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