<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Rivera-Hernandez, Frances</style></author><author><style face="normal" font="default" size="100%">Sumner, Dawn Y.</style></author><author><style face="normal" font="default" size="100%">Mackey, Tyler J.</style></author><author><style face="normal" font="default" size="100%">Ian Hawes</style></author><author><style face="normal" font="default" size="100%">Dale T. Andersen</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">In a PICL: The sedimentary deposits and facies of perennially ice-covered lakes</style></title><secondary-title><style face="normal" font="default" size="100%">Sedimentology</style></secondary-title><short-title><style face="normal" font="default" size="100%">Sedimentology</style></short-title></titles><dates><year><style  face="normal" font="default" size="100%">2019</style></year><pub-dates><date><style  face="normal" font="default" size="100%">04/2019</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://onlinelibrary.wiley.com/doi/abs/10.1111/sed.12522</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">66</style></volume><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Perennially ice‐covered lakes can have significantly different facies than open‐water lakes because sediment is transported onto the ice, where it accumulates, and sand grains preferentially melt through to be deposited on the lake floor. To characterize the facies in these lakes, sedimentary deposits from five Antarctic perennially ice‐covered lakes were described using lake‐bottom observations, underwater video and images, and sediment cores. One lake was dominated by laminated microbial mats and mud (derived from an abutting glacier), with disseminated sand and rare gravel. The other four lakes were dominated by laminated microbial mats and moderately well to moderately sorted medium to very coarse sand with sparse granules and pebbles; they contained minor interstitial or laminated mud (derived from streams and abutting glaciers). The sand was disseminated or localized in mounds and 1 m to more than 10 m long elongate ridges. Mounds were centimetres to metres in diameter; conical, elongate or round in shape; and isolated or deposited near or on top of one another. Sand layers in the mounds had normal, inverse, or no grading. Nine mixed mud and sand facies were defined for perennially ice‐covered lakes based on the relative proportion of mud to sand and the style of sand deposition. While perennially ice‐covered lake facies overlap with other ice‐influenced lakes and glaciomarine facies, they are characterized by a paucity of grains coarser than granules, a narrow range in sand grain sizes, and inverse grading in the sand mounds. These facies can be used to infer changes in ice cover through time and to identify perennially ice‐covered lakes in the rock record. Ancient perennially ice‐covered lakes are expected on Earth and Mars, and their characterization will provide new insights into past climatic conditions and habitability.&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">3</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Zhang, L.</style></author><author><style face="normal" font="default" size="100%">Jungblut, Anne D.</style></author><author><style face="normal" font="default" size="100%">Ian Hawes</style></author><author><style face="normal" font="default" size="100%">Dale T. Andersen</style></author><author><style face="normal" font="default" size="100%">Sumner, Dawn Y.</style></author><author><style face="normal" font="default" size="100%">Mackey, Tyler J.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Cyanobacterial diversity in benthic mats of the McMurdo Dry Valley lakes, Antarctica</style></title><secondary-title><style face="normal" font="default" size="100%">Polar Biology</style></secondary-title><short-title><style face="normal" font="default" size="100%">Polar Biol</style></short-title></titles><dates><year><style  face="normal" font="default" size="100%">2015</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/2015</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://link.springer.com/10.1007/s00300-015-1669-0http://link.springer.com/content/pdf/10.1007/s00300-015-1669-0</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">38</style></volume><pages><style face="normal" font="default" size="100%">1097 - 1110</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;div&gt;Perennially ice-covered, meromictic lakes in&amp;nbsp;&lt;span style=&quot;font-size: 0.923em; line-height: 1.5em;&quot;&gt;the McMurdo Dry Valleys, Antarctica, are useful models to&amp;nbsp;&lt;/span&gt;&lt;span style=&quot;font-size: 0.923em; line-height: 1.5em;&quot;&gt;study the relationship between cyanobacterial and environmental&amp;nbsp;&lt;/span&gt;&lt;span style=&quot;font-size: 0.923em; line-height: 1.5em;&quot;&gt;variables. They have rich benthic cyanobacterial&amp;nbsp;&lt;/span&gt;&lt;span style=&quot;font-size: 0.923em; line-height: 1.5em;&quot;&gt;mat accumulations and stable stratification of physical and&amp;nbsp;&lt;/span&gt;&lt;span style=&quot;font-size: 0.923em; line-height: 1.5em;&quot;&gt;chemical conditions. Here, we evaluated cyanobacteria&amp;nbsp;&lt;/span&gt;&lt;span style=&quot;font-size: 0.923em; line-height: 1.5em;&quot;&gt;from benthic mats from multiple depths in three geographically&amp;nbsp;&lt;/span&gt;&lt;span style=&quot;font-size: 0.923em; line-height: 1.5em;&quot;&gt;separated ice-covered lakes, Lakes Vanda,&amp;nbsp;&lt;/span&gt;&lt;span style=&quot;font-size: 0.923em; line-height: 1.5em;&quot;&gt;Hoare and Joyce, using 16S rRNA gene clone libraries. We&amp;nbsp;&lt;/span&gt;&lt;span style=&quot;font-size: 0.923em; line-height: 1.5em;&quot;&gt;identified 19 ribotypes, mostly Oscillatoriales and several&lt;/span&gt;&lt;/div&gt;&lt;div&gt;Chroococcales, as well as potentially novel cyanobacterial&amp;nbsp;&lt;span style=&quot;font-size: 0.923em; line-height: 1.5em;&quot;&gt;ribotypes. The majority of ribotype diversity was shared&amp;nbsp;&lt;/span&gt;&lt;span style=&quot;font-size: 0.923em; line-height: 1.5em;&quot;&gt;between lakes, and only a weak relationship between ribotype&amp;nbsp;&lt;/span&gt;&lt;span style=&quot;font-size: 0.923em; line-height: 1.5em;&quot;&gt;community structure and environmental variables&amp;nbsp;&lt;/span&gt;&lt;span style=&quot;font-size: 0.923em; line-height: 1.5em;&quot;&gt;was evident. Multivariate analysis of all lake&amp;ndash;depth combinations&amp;nbsp;&lt;/span&gt;&lt;span style=&quot;font-size: 0.923em; line-height: 1.5em;&quot;&gt;implied that photosynthetically active radiation,&amp;nbsp;&lt;/span&gt;&lt;span style=&quot;font-size: 0.923em; line-height: 1.5em;&quot;&gt;dissolved reactive phosphorus and conductivity were&amp;nbsp;&lt;/span&gt;&lt;span style=&quot;font-size: 0.923em; line-height: 1.5em;&quot;&gt;potentially important for shaping benthic communities in&amp;nbsp;&lt;/span&gt;&lt;span style=&quot;font-size: 0.923em; line-height: 1.5em;&quot;&gt;McMurdo Dry Valley lakes. Cyanobacterial-specific pigment&amp;nbsp;&lt;/span&gt;&lt;span style=&quot;font-size: 0.923em; line-height: 1.5em;&quot;&gt;signature analysis by high-performance liquid chromatography&lt;/span&gt;&lt;/div&gt;&lt;div&gt;showed that the cyanobacterial communities&amp;nbsp;&lt;span style=&quot;font-size: 0.923em; line-height: 1.5em;&quot;&gt;responded to light conditions similarly, irrespective of&amp;nbsp;&lt;/span&gt;&lt;span style=&quot;font-size: 0.923em; line-height: 1.5em;&quot;&gt;community composition. The results imply a capability&amp;nbsp;&lt;/span&gt;&lt;span style=&quot;font-size: 0.923em; line-height: 1.5em;&quot;&gt;within a suite of cyanobacteria to colonise, adapt and grow&amp;nbsp;&lt;/span&gt;&lt;span style=&quot;font-size: 0.923em; line-height: 1.5em;&quot;&gt;across broad environmental ranges and geographic space,&amp;nbsp;&lt;/span&gt;&lt;span style=&quot;font-size: 0.923em; line-height: 1.5em;&quot;&gt;and such adaptability may provide a high degree of community&amp;nbsp;&lt;/span&gt;&lt;span style=&quot;font-size: 0.923em; line-height: 1.5em;&quot;&gt;resistance and resilience to future climate-driven&amp;nbsp;&lt;/span&gt;&lt;span style=&quot;font-size: 0.923em; line-height: 1.5em;&quot;&gt;environmental change in Antarctic terrestrial aquatic&lt;/span&gt;&lt;/div&gt;&lt;div&gt;ecosystems.&lt;/div&gt;</style></abstract><issue><style face="normal" font="default" size="100%">8</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Dermot Antoniades</style></author><author><style face="normal" font="default" size="100%">Catherine Crawley</style></author><author><style face="normal" font="default" size="100%">Douglas, Marianne S. V.</style></author><author><style face="normal" font="default" size="100%">Pienitz, R</style></author><author><style face="normal" font="default" size="100%">Dale T. Andersen</style></author><author><style face="normal" font="default" size="100%">Peter T. Doran</style></author><author><style face="normal" font="default" size="100%">Ian Hawes</style></author><author><style face="normal" font="default" size="100%">Pollard, W</style></author><author><style face="normal" font="default" size="100%">Warwick F. Vincent</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Reply to comment by K. Gajewski on “Abrupt environmental change in Canada's northernmost lake”</style></title><secondary-title><style face="normal" font="default" size="100%">Geophysical Research Letters</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2008</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.agu.org/pubs/crossref/2008/2007GL032889.shtml</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">35</style></volume><language><style face="normal" font="default" size="100%">eng</style></language><issue><style face="normal" font="default" size="100%">8</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>5</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Christopher P. McKay</style></author><author><style face="normal" font="default" size="100%">Dale T. Andersen</style></author><author><style face="normal" font="default" size="100%">Pollard, W</style></author><author><style face="normal" font="default" size="100%">Heldmann, J</style></author><author><style face="normal" font="default" size="100%">Peter T. Doran</style></author><author><style face="normal" font="default" size="100%">Christian H. Fritsen</style></author><author><style face="normal" font="default" size="100%">John C. Priscu</style></author></authors><tertiary-authors><author><style face="normal" font="default" size="100%">Tetsuya Tokano</style></author></tertiary-authors></contributors><titles><title><style face="normal" font="default" size="100%">Polar lakes, streams, and springs as analogs for the hydrological cycle on Mars.</style></title><secondary-title><style face="normal" font="default" size="100%">Advances in Astrobiology and Biogeophysics</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">/reports/lakes/McKayEtAl2005StreamsSprings.pdf</style></url></web-urls></urls><publisher><style face="normal" font="default" size="100%">Springer Verlag</style></publisher><pub-location><style face="normal" font="default" size="100%">Berlin, Heidelberg</style></pub-location><pages><style face="normal" font="default" size="100%">219-233</style></pages><language><style face="normal" font="default" size="100%">eng</style></language></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>5</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Peter T. 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Smol</style></author></tertiary-authors></contributors><titles><title><style face="normal" font="default" size="100%">Paleolimnology of extreme cold terrestrial and extraterrestrial environments.</style></title><secondary-title><style face="normal" font="default" size="100%">Long-Term Environmental Change in Arctic and Antarctic Lakes</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2004</style></year></dates><publisher><style face="normal" font="default" size="100%">Kluwer Academic Publishers</style></publisher><pub-location><style face="normal" font="default" size="100%">Dordrecht, The Netherlands</style></pub-location><pages><style face="normal" font="default" size="100%">475-507</style></pages><isbn><style face="normal" font="default" size="100%">978-1-4020-2125-1</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Diane M. McKnight</style></author><author><style face="normal" font="default" size="100%">Elizabeth W. Boyer</style></author><author><style face="normal" font="default" size="100%">Paul K. Westerhoff</style></author><author><style face="normal" font="default" size="100%">Peter T. Doran</style></author><author><style face="normal" font="default" size="100%">Thomas Kulbe</style></author><author><style face="normal" font="default" size="100%">Dale T. Andersen</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Spectrofluorometric characterization of aquatic fulvic acid for  determination of precursor organic material and general structural properties.</style></title><secondary-title><style face="normal" font="default" size="100%">Limnology and Oceanography</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2001</style></year></dates><volume><style face="normal" font="default" size="100%">46</style></volume><pages><style face="normal" font="default" size="100%">38-48</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><accession-num><style face="normal" font="default" size="100%">LTER49836</style></accession-num></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Kepner, R.L.</style></author><author><style face="normal" font="default" size="100%">A. 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Kralik</style></author><author><style face="normal" font="default" size="100%">H. Froschl</style></author></authors><secondary-authors><author><style face="normal" font="default" size="100%">P.A.J. Englert</style></author><author><style face="normal" font="default" size="100%">Dale T. Andersen</style></author><author><style face="normal" font="default" size="100%">C.M. Pieters</style></author><author><style face="normal" font="default" size="100%">Robert A. Wharton Jr.</style></author></secondary-authors></contributors><titles><title><style face="normal" font="default" size="100%">Reflectance spectroscopy and geochemical analyses of Lake Hoare  sediments, Antarctica: Implications for remote sensing of the Earth and Mars</style></title><secondary-title><style face="normal" font="default" size="100%">Geochimica et Cosmochimica Acta</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1996</style></year></dates><volume><style face="normal" font="default" size="100%">60</style></volume><pages><style face="normal" font="default" size="100%">765-785</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><issue><style face="normal" font="default" size="100%">5</style></issue><accession-num><style face="normal" font="default" size="100%">LTER12789</style></accession-num></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Christopher P. 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Wharton Jr.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Light transmission and reflection in perennially ice-covered Lake Hoare, Antarctica</style></title><secondary-title><style face="normal" font="default" size="100%">Journal Geophysics Research</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1994</style></year><pub-dates><date><style  face="normal" font="default" size="100%">06/1994</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">99</style></volume><pages><style face="normal" font="default" size="100%">20427-20444</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><issue><style face="normal" font="default" size="100%">C10</style></issue><accession-num><style face="normal" font="default" size="100%">LTER12890</style></accession-num></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Robert A. 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