<div dir="ltr"><div><img src="cid:ii_km1a9vco1" alt="image.png" width="353" height="94"><br></div><div><br></div><div>
<p class="MsoNormal" style="margin:0in 0in 0.0001pt;text-align:justify;line-height:normal;word-break:normal;font-family:"\00b9d1\00c740 \00ace0\00b515""><font size="2"><span style="font-family:"Arial",sans-serif;color:black">Hello all,<span></span></span></font></p><font size="2">
</font><p class="MsoNormal" style="margin:0in 0in 0.0001pt;text-align:justify;line-height:normal;word-break:normal;font-family:"\00b9d1\00c740 \00ace0\00b515""><font size="2"><span style="font-family:"Arial",sans-serif;color:black"><span> </span></span></font></p><font size="2">
</font><p class="MsoNormal" style="margin:0in 0in 0.0001pt;text-align:justify;line-height:normal;word-break:normal;font-family:"\00b9d1\00c740 \00ace0\00b515""><font size="2"><span style="font-family:"Arial",sans-serif;color:black">We are excited to have Adrian Gallo, a PhD Candidate at Oregon State University this Thursday (3/11/2021, 1:30-2:30 pm, Pacific time). He will share his research on how plant-derived organic carbon is distributed across ecosystems and down soil profiles. Please join us using the zoom link below. <span></span></span></font></p><font size="2">
</font><p class="MsoNormal" style="margin:0in 0in 0.0001pt;text-align:justify;line-height:normal;word-break:normal;font-family:"\00b9d1\00c740 \00ace0\00b515""><font size="2"><span style="font-family:"Arial",sans-serif;color:black"><span> </span></span></font></p><font size="2">
</font><p class="MsoNormal" style="margin:0in 0in 0.0001pt;text-align:justify;line-height:normal;word-break:normal;font-family:"\00b9d1\00c740 \00ace0\00b515""><font size="2"><span style="font-family:"Arial",sans-serif;color:black">Join zoom meeting Enviro-lunch<span></span></span></font></p><font size="2">
</font><p class="MsoNormal" style="margin:0in 0in 0.0001pt;text-align:justify;line-height:normal;word-break:normal;font-family:"\00b9d1\00c740 \00ace0\00b515""><font size="2"><span style="font-family:"Arial",sans-serif;color:black"><a href="https://ucmerced.zoom.us/j/175736103" target="_blank"><span style="color:blue">https://ucmerced.zoom.us/j/175736103</span></a><span></span></span></font></p><font size="2">
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</span></font></p><p style="margin:0in 0in 0.0001pt;font-family:"Times New Roman",serif"><font size="2"><b><u><span style="font-family:"Verdana",sans-serif">Title</span></u></b><span style="font-family:"Verdana",sans-serif">: </span><span></span></font></p><font size="2">
</font><p style="margin:0in 0in 0.0001pt;font-stretch:normal;font-family:"Times New Roman",serif"><font size="2"><span style="font-family:"Verdana",sans-serif">Burnt wood to plant roots: where does
plant carbon hide in soils?</span><span></span></font></p><font size="2">
</font><p class="MsoNormal" style="margin:0in 0in 0.0001pt;line-height:normal;word-break:normal;font-family:"\00b9d1\00c740 \00ace0\00b515""><font size="2"><b><u><span style="font-family:"Verdana",sans-serif;color:black"><span><span style="text-decoration:none"> </span></span></span></u></b></font></p><font size="2"></font><p class="MsoNormal" style="margin:0in 0in 0.0001pt;line-height:normal;word-break:normal;font-family:"\00b9d1\00c740 \00ace0\00b515""><font size="2"><b><u><span style="font-family:"Verdana",sans-serif;color:black">Bio</span></u></b><span style="font-family:"Verdana",sans-serif;color:black">: <br></span></font></p><img src="cid:ii_km1a93710" alt="Permafrost Half.jpeg" style="margin-right: 0px;" width="207" height="155"><br><p class="MsoNormal" style="margin:0in 0in 0.0001pt;line-height:normal;word-break:normal;font-family:"\00b9d1\00c740 \00ace0\00b515""><font size="2"><span style="font-family:"Verdana",sans-serif;color:black"></span><span style="font-family:"Times New Roman",serif"><span></span></span></font></p><font size="2">
</font><p class="MsoNormal" style="margin:0in 0in 0.0001pt;line-height:normal;word-break:normal;font-family:"\00b9d1\00c740 \00ace0\00b515""><font size="2"><span style="font-family:"Verdana",sans-serif;color:black">Adrian (he/him) is currently a PhD candidate at Oregon State
University focusing on soil organic matter across ecosystems. His career
started at Cal Poly, San Luis Obispo, where his curiosity and love of the
outdoors led him to discover the fields of geology and soil science. He then
spent time in both the Tongass (Alaska) and Klamath-Siskiyou (Oregon) National
Forests working on long-term management plans. His love of California’s
grasslands was overshadowed by his experiences in the Pacific Northwest where
he then decided to pursue a MS in forestry at Oregon State University. He
continues his soil science research in the college of agriculture where he
expects to complete his PhD this summer. In his spare time he enjoys mountain
biking, playing soccer, and is a co-host for the Oregon State science
communication podcast & radio show, Inspiration Dissemination. </span><span style="font-family:"Times New Roman",serif"><span></span></span></font></p><font size="2">
</font><p class="MsoNormal" style="margin:0in 0in 0.0001pt;line-height:normal;word-break:normal;font-family:"\00b9d1\00c740 \00ace0\00b515""><font size="2"><span style="font-family:"Verdana",sans-serif;color:black"> </span><span style="font-family:"Times New Roman",serif"><span></span></span></font></p><font size="2">
</font><p class="MsoNormal" style="margin:0in 0in 0.0001pt;line-height:normal;word-break:normal;font-family:"\00b9d1\00c740 \00ace0\00b515""><font size="2"><b><u><span style="font-family:"Verdana",sans-serif;color:black">Abstract</span></u></b><span style="font-family:"Verdana",sans-serif;color:black">: </span><span style="font-family:"Times New Roman",serif"><span></span></span></font></p><font size="2">
</font><p class="MsoNormal" style="margin:0in 0in 0.0001pt;line-height:normal;word-break:normal;font-family:"\00b9d1\00c740 \00ace0\00b515""><font size="2"><span style="font-family:"Verdana",sans-serif;color:black">Soils contain more organic carbon than both the atmosphere
and aboveground terrestrial biomass combined. However, a 21<sup>st</sup> century
understanding of soil organic matter (SOM) dynamics has forced us to re-assess
past assumptions embedded in global climate models making it an exciting but
complicated time to be a soil scientist as ‘soil sequestration’ continues to
gain more traction in public policy debates. In order to reconcile how SOM can
change on short timescales, we examined an intensive biomass manipulation
experiment in the Oregon Cascades tracking how native SOM can shift as a result
of large plant inputs and removals. We found soil temperature increased as a
function of greater surface biomass removals, but soil respiration was
relatively consistent across all biomass manipulations. Despite large inputs of
residual forest biomass from aboveground, the mineral-associated C transformed
to a root-like signature. This indicates that dead and rapidly decomposing
roots helped maintain the original soil-C stores by replacing much of the <i>native</i> SOM
within a two-year timeframe showing both the vulnerability and resilience of
soils. This case study showed us that while soil-C stores appear consistent,
the changes in SOM <i>composition</i> can be dramatic. </span><span style="font-family:"Times New Roman",serif"><span></span></span></font></p><font size="2">
</font><p class="MsoNormal" style="margin:0in 0in 0.0001pt;line-height:normal;word-break:normal;font-family:"\00b9d1\00c740 \00ace0\00b515""><font size="2"><span style="font-family:"Times New Roman",serif"><span> </span></span></font></p><font size="2">
</font><p class="MsoNormal" style="margin:0in 0in 0.0001pt;line-height:normal;word-break:normal;font-family:"\00b9d1\00c740 \00ace0\00b515""><font size="2"><span style="font-family:"Verdana",sans-serif;color:black">As inputs to soil may shift in the future, a focus on the
composition of SOM could help us predict how other ecosystems may respond to
further perturbations. We then zoom out to longer timescales and a larger
geographic scope using soil profiles from the National Ecological Observatory
Network (NEON). We characterized ~40 NEON sites from the northernmost tip of
Alaska to the restored wetlands of central Florida; because biogeochemistry
research too often focuses on surface horizons, we focused on three
representative genetic horizons often reaching ~1m deep. We found
lignin-derived carbon in soils represents a remarkably similar proportion of
SOM across ecosystems <i>and</i> down soil profiles. Using pyrogenic
carbon analysis, we found the legacy of fire extends far beyond our modern
history books but remain encrypted in soils. From NEON’s continental-scale
sample set we are continuing to advance our understanding of ecosystems while
simultaneously discarding developing theories of SOM dynamics. <br></span></font></p><p class="MsoNormal" style="margin:0in 0in 0.0001pt;line-height:normal;word-break:normal;font-family:"\00b9d1\00c740 \00ace0\00b515""><br></p><p class="MsoNormal" style="margin:0in 0in 0.0001pt;line-height:normal;word-break:normal;font-family:"\00b9d1\00c740 \00ace0\00b515""><br></p><p class="MsoNormal" style="margin:0in 0in 0.0001pt;line-height:normal;word-break:normal;font-family:"\00b9d1\00c740 \00ace0\00b515"">
</p><p style="margin:0in;background:white none repeat scroll 0% 0%;font-variant-caps:normal;text-align:start;word-spacing:0px">
<font size="2"><span style="font-family:"David",sans-serif;color:black;border:1pt none windowtext;padding:0in">KJ Min, Manisha Dolui, Anna Jurusik (Student and Post-doc coordinators) and Dr. Asmeret Asefaw Berhe (Faculty coordinator)</span><span style="font-family:"-webkit-standard",serif;color:black"></span></font></p>
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<span style="font-size:12pt;font-family:"David",sans-serif;color:black;border:1pt none windowtext;padding:0in"><span class="gmail-il"></span><br></span></p>
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