<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<div dir="ltr">
<div>
<div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature">
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div><span style="font-size:12.8px;font-family:arial,sans-serif">Hello Everyone,</span><br>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="gmail_quote">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div>
<p class="MsoNormal" style="font-size:12.8px;font-family:arial,sans-serif"><u></u></p>
<p class="MsoNormal" style="font-size:12.8px;font-family:arial,sans-serif">We were able to reschedule Marjorie Schulz's talk for <b>this Thursday, Nov. 29</b>, 12-1pm in Room SE2-302.</p>
<p class="MsoNormal" style="font-size:12.8px;font-family:arial,sans-serif"><br>
</p>
<p class="MsoNormal" style="font-size:11pt;font-family:Calibri,sans-serif;text-align:center;margin:0in 0in 10pt;line-height:115%">
<span style="font-size:18pt;line-height:115%;font-family:"Times New Roman",serif">Looking deep to understand SOM-mineral relationships: Rhizospheres and Biofilms</span></p>
<p class="MsoNormal" style="font-size:11pt;font-family:Calibri,sans-serif;text-align:center;margin:0in 0in 10pt;line-height:115%">
<span style="font-size:18pt;line-height:115%;font-family:"Times New Roman",serif"></span></p>
<div style="font-size:12.8px;font-family:arial,sans-serif;text-align:center"><img src="cid:ii_jnm71yr70" alt="image.png" width="160" height="240"><br>
</div>
<p class="MsoNormal" style="text-align:center;margin:0in 0in 10pt;line-height:115%">
<font face="arial, helvetica, sans-serif">Soil organic matter (SOM) in deep (>30 cm) soil is microbially processed. Integration of microbial carbon into a long-term carbon pool is not well understood but known to be related to associations with short range
ordered (SRO) minerals and/or soil aggregates. However, there remains a significant knowledge gap; we do not yet understand the processes occurring at the microbe-mineral interface. Soil microbial processes have been studied mostly through bulk measurements
such as soil respiration and enzymatic assays. Where the microbes inhabit and interact with soil minerals is not well established. Scanning electron microscopy (SEM) images demonstrate that SOM mineral interfaces are commonly microbial biofilms and their remnants
illustrating the importance of biofilm production in generating SOM. These images also show that fungi and biofilms weather primary mineral grains, that soil organo-cutans are biofilms, and that biologic precipitation of SRO minerals occurs in biofilms, likely
co-precipitating with organic compounds. This work shows how SEM can be used without extensive sample preparation to image SOM.</font></p>
</div>
<div>
<p class="MsoNormal" style="text-align:center;margin:0in 0in 10pt;line-height:115%">
<span style="line-height:115%"><font face="arial, helvetica, sans-serif">Jorie has a BA in geology from Knox College and an MS in geology from University of Missouri. She has worked at the USGS since 1987, first in the branch of Marine Geology with a project
studying Fe-Mn crusts. She transferred to National Research Program of the Water Division in 1990 to work with Art White on mineral dissolution rates. This project used soil chronosequences to studying long term dissolution rates of primary minerals. The work
in soil chronosequences has continued to the present giving Jorie an appreciation of the effect of time. She is currently a lead scientist on a project titled, Biogeochemistry of soils: carbon/water/rock interaction in the critical zone.</font></span></p>
</div>
<div style="font-family:arial,sans-serif;font-size:12.8px">
<p class="MsoNormal" style="text-align:left"><br>
</p>
<p class="MsoNormal" style="text-align:left">When: 11/29 Thursday, 12pm – 1pm<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">Where: SE2-302<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">Coffee will be provided, please bring your own mugs.<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">We look forward to seeing you,<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">Nate & Jing<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">Organizers for Fall 2018: Nate Bogie and Jing Yan<u></u><u></u></p>
<p class="MsoNormal">Faculty coordinator: Asmeret Asefaw Berhe</p>
</div>
<br>
</div>
</div>
</div>
</div>
</div>
</div>
</body>
</html>