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</head><body bgcolor="#FFFFFF" text="#000000">Looks good Mike, thanks,
Tina<br>
<br>
<blockquote style="border: 0px none;"
cite="mid:7276335D-5C8A-4A68-B8B0-8E086F5EF8CB@colorado.edu" type="cite">
<div style="margin:30px 25px 10px 25px;" class="__pbConvHr"><div
style="display:table;width:100%;border-top:1px solid
#EDEEF0;padding-top:5px"> <div
style="display:table-cell;vertical-align:middle;padding-right:6px;"><img
photoaddress="michael.gooseff@colorado.edu" photoname="Michael Gooseff"
src="cid:part1.02020603.06020707@gmail.com"
name="compose-unknown-contact.jpg" height="25px" width="25px"></div> <div
style="display:table-cell;white-space:nowrap;vertical-align:middle;width:100%">
<a moz-do-not-send="true" href="mailto:michael.gooseff@colorado.edu"
style="color:#737F92
!important;padding-right:6px;font-weight:bold;text-decoration:none
!important;">Michael Gooseff</a></div> <div
style="display:table-cell;white-space:nowrap;vertical-align:middle;">
<font color="#9FA2A5"><span style="padding-left:6px">July 31, 2015
6:01 AM</span></font></div></div></div>
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Hi all,
<div class=""><br class="">
</div>
<div class="">I thought it might be strategic to contribute a
presentation to this session at AGU (Marcia McNutt is one of the invited
speakers, and Lauren Everett the PRB program officer is one of the
conveners): </div>
<div class=""><b class="">Responding to Rapid Environmental Change at
the Poles</b></div>
<div class="">(it’s a Global Environmental Change session)</div>
<div class=""><br class="">
</div>
<div class="">So, I put together the following abstract with all of you
as co-authors (actually the process is different this year - you submit
an abstract as a lead author and THEN if its accepted, you add
co-authors ). <i class=""><font class="" color="#e32400">Let
me know if you want to see edits. </font></i>I thought I would put
together the broad story on synthesis but look toward the future for
differing recovery or change timescales across the system with an eye
toward what happens in the coming ‘warming’ decades…
Thanks.</div>
<div class=""><br class="">
</div>
<div class=""><br class="">
</div>
<div class="">TITLE: The Past as a Window to the Future of Antarctic
Ecosystems - What does 20+ Years of Scientific Research in the McMurdo
Dry Valleys, Antarctica Tell Us About the Trajectory of Polar
Ecosystems?</div>
<div class=""><br class="">
</div>
<div class="">ABSTRACT: The McMurdo Dry Valleys of Antarctica represent
the largest ice-free area of the continent. The landscape is dominated
by glaciers, exposed soils, streams, and ice-covered lakes, and hosts an
incredible ecosystem that is largely driven
by microbes and some invertebrates. Given the low air temperatures
(-18C annual mean), little precipitation (<10 cm
water equivalent/yr), and lack of vegetation cover, the Dry Valleys
ecosystem is strongly influenced by physical processes. In the past two
decades, summer conditions have been observed to fluctuate
significantly. From 1986-2001, the area experienced a cooling trend and
the ecosystem responded with decreasing soil invertebrate populations,
decreased streamflow, decreased primary productivity in
lakes, and decreased algal biomass in streams. Since 2001, 3 very high
glacial melt years have occurred producing record stream flows and
extensive wetted soils. During this most recent decade, the levels of
closed-basin lakes have risen substantially, with
increasing heat contents, and we have observed increased
permafrost degradation along streambanks. Here we assess the ecosystem
responses of the cooling 'press' that occurred from 1986-2001 and the
more most recent decade that has had several strong pulses
of energy driving the system to develop expectations for the future
state and function of this polar desert ecosystem. We propose that the
future trajectory of climate and energy input to the region will likely
be more inconsistent than the cooling period
was. Hence, the ecosystem will be consistently responding to pulses of
change over varying time periods. We also expect that recovery of the
ozone layer over Antarctica may play an important role in modifying both
regional climate and the Dry Valleys ecosystem.</div>
<div class=""><br class="">
</div>
<div class=""><br class="">
</div>
<div class="">cheers</div>
<div class="">-Mike</div>
<div class=""><br class="">
<div class="">
<div class="">
<div class="" style="word-wrap: break-word; -webkit-nbsp-mode: space;
-webkit-line-break: after-white-space;">
<div class="">-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-</div>
<div class="">Michael Gooseff, Associate Professor</div>
<div class="">Institute of Arctic and Alpine Research</div>
<div class="">Civil, Architectural, and Environmental Engineering</div>
<div class="">University of Colorado</div>
<div class="">Boulder, CO 80309-0450</div>
<div class=""><br class="">
</div>
<div class="">email: <a moz-do-not-send="true" class=""
href="mailto:michael.gooseff@colorado.edu">michael.gooseff@colorado.edu</a></div>
<div class="">web: <a moz-do-not-send="true" class=""
href="http://goosefflab.weebly.com/">http://goosefflab.weebly.com</a> </div>
</div>
phone: 303.735.5333</div>
<div class=""><br class="">
</div>
<div class=""><br class="">
</div>
<br class="Apple-interchange-newline">
</div>
<br class="">
</div>
<div>_______________________________________________<br>Long Term
Ecological Research Network<br>mcm-pi mailing list<br><a class="moz-txt-link-abbreviated" href="mailto:mcm-pi@lternet.edu">mcm-pi@lternet.edu</a><br></div></div>
</blockquote>
<br>
<div class="moz-signature">-- <br><span style="color: rgb(0, 0, 0);"><pre wrap="">Cristina Takacs-Vesbach
Professor
Department of Biology
University of New Mexico
MSC03 2020
Albuquerque, NM 87131
Phone: <span __postbox-detected-content="__postbox-detected-phone" class="__postbox-detected-content __postbox-detected-phone" style="display: inline; font-size: inherit; padding: 0pt;">505-277-3418</span>
Fax: <span __postbox-detected-content="__postbox-detected-phone" class="__postbox-detected-content __postbox-detected-phone" style="display: inline; font-size: inherit; padding: 0pt;">505-277-0304</span>
website: <a class="moz-txt-link-freetext" href="http://pearl3.unm.edu/site/main.html">http://pearl3.unm.edu/site/main.html</a>
Fedex and DHL Shipping Address:
University of New Mexico
Castetter Hall Room 133
Albuquerque, NM 87131
</pre> </span><span></span></div>
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