<?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%">Melisa A. Diaz</style></author><author><style face="normal" font="default" size="100%">Byron Adams</style></author><author><style face="normal" font="default" size="100%">Kathleen A. Welch</style></author><author><style face="normal" font="default" size="100%">Sue Welch</style></author><author><style face="normal" font="default" size="100%">Opiyo, Stephen O.</style></author><author><style face="normal" font="default" size="100%">Khan, Alia L.</style></author><author><style face="normal" font="default" size="100%">Diane M. McKnight</style></author><author><style face="normal" font="default" size="100%">Craig S Cary</style></author><author><style face="normal" font="default" size="100%">W. Berry Lyons</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Aeolian material transport and its role in landscape connectivity in the McMurdo Dry Valleys, Antarctica</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Geophysical Research: Earth Surface</style></secondary-title><short-title><style face="normal" font="default" size="100%">J. Geophys. Res. Earth Surf.</style></short-title></titles><dates><year><style  face="normal" font="default" size="100%">2018</style></year><pub-dates><date><style  face="normal" font="default" size="100%">12/2018</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2017JF004589</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">123</style></volume><pages><style face="normal" font="default" size="100%">3323 - 3337</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Arid regions, particularly polar and alpine desert environments, have diminished landscape connectivity compared to temperate regions due to limited and/or seasonal hydrological processes. For these environments, aeolian processes play a particularly important role in landscape evolution and biotic community vitality through nutrient and solute additions. The McMurdo Dry Valleys (MDV) are the largest ice-free area in Antarctica and are potentially a major source of aeolian material for the continent. From this region, samples were collected at five heights (~5, 10, 20, 50, and 100 cm) above the surface seasonally for 2013 through 2015 from Alatna Valley, Victoria Valley, Miers Valley, and Taylor Valley (Taylor Glacier, East Lake Bonney, F6 (Lake Fryxell), and Explorer&amp;rsquo;s Cove). Despite significant geological separation and varying glacial histories, low-elevation and coastal sites had similar major ion chemistries, as did high-elevation and inland locations. This locational clustering of compositions was also evident in scanning electron microscopy images and principal component analyses, particularly for samples collected at ~100 cm above the surface. Compared to published soil literature, aeolian material in Taylor Valley demonstrates a primarily down-valley transport of material toward the coast. Soluble N:P ratios in the aeolian material reflect relative nutrient enrichments seen in MDV soils and lakes, where younger, coastal soils are relatively N depleted, while older, up-valley soils are relatively P depleted. The aeolian transport of materials, including water-soluble nutrients, is an important vector of connectivity within the MDV and provides a mechanism to help &amp;ldquo;homogenize&amp;rdquo; the geochemistry of both soil and aquatic ecosystems.&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">12</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%">Pearce, David A.</style></author><author><style face="normal" font="default" size="100%">Alekhina, Irina A.</style></author><author><style face="normal" font="default" size="100%">Terauds, Aleks</style></author><author><style face="normal" font="default" size="100%">Wilmotte, Annick</style></author><author><style face="normal" font="default" size="100%">Quesada, Antonio</style></author><author><style face="normal" font="default" size="100%">Edwards, Arwyn</style></author><author><style face="normal" font="default" size="100%">Dommergue, Aurelien</style></author><author><style face="normal" font="default" size="100%">Sattler, Birgit</style></author><author><style face="normal" font="default" size="100%">Byron Adams</style></author><author><style face="normal" font="default" size="100%">Magalhaes, Catarina</style></author><author><style face="normal" font="default" size="100%">Chu, Wan-Loy</style></author><author><style face="normal" font="default" size="100%">Lau, Maggie C. Y.</style></author><author><style face="normal" font="default" size="100%">Craig S Cary</style></author><author><style face="normal" font="default" size="100%">Smith, David J.</style></author><author><style face="normal" font="default" size="100%">Diana H. Wall</style></author><author><style face="normal" font="default" size="100%">Eguren, Gabriela</style></author><author><style face="normal" font="default" size="100%">Matcher, Gwynneth</style></author><author><style face="normal" font="default" size="100%">Bradley, James A.</style></author><author><style face="normal" font="default" size="100%">de Vera, Jean-Pierre</style></author><author><style face="normal" font="default" size="100%">Elster, Josef</style></author><author><style face="normal" font="default" size="100%">Hughes, Kevin A.</style></author><author><style face="normal" font="default" size="100%">Cuthbertson, Lewis</style></author><author><style face="normal" font="default" size="100%">Benning, Liane G.</style></author><author><style face="normal" font="default" size="100%">Gunde-Cimerman, Nina</style></author><author><style face="normal" font="default" size="100%">Convey, Peter</style></author><author><style face="normal" font="default" size="100%">Hong, Soon Gyu</style></author><author><style face="normal" font="default" size="100%">Pointing, Steve B.</style></author><author><style face="normal" font="default" size="100%">Pellizari, Vivian H.</style></author><author><style face="normal" font="default" size="100%">Vincent, Warwick F.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Aerobiology Over Antarctica – A New Initiative for Atmospheric Ecology</style></title><secondary-title><style face="normal" font="default" size="100%">Frontiers in Microbiology</style></secondary-title><short-title><style face="normal" font="default" size="100%">Front. Microbiol.</style></short-title></titles><dates><year><style  face="normal" font="default" size="100%">2016</style></year><pub-dates><date><style  face="normal" font="default" size="100%">02/2016</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://journal.frontiersin.org/Article/10.3389/fmicb.2016.00016/abstract</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">776796194610314927235011365134445142846479110123936574</style></volume><language><style face="normal" font="default" size="100%">eng</style></language><issue><style face="normal" font="default" size="100%">53307413</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%">Magalhaes, Catarina</style></author><author><style face="normal" font="default" size="100%">Stevens, Mark I.</style></author><author><style face="normal" font="default" size="100%">Craig S Cary</style></author><author><style face="normal" font="default" size="100%">Ball, Becky</style></author><author><style face="normal" font="default" size="100%">Storey, Bryan C.</style></author><author><style face="normal" font="default" size="100%">Diana H. Wall</style></author><author><style face="normal" font="default" size="100%">Türk, Roman</style></author><author><style face="normal" font="default" size="100%">Ruprecht, Ulrike</style></author></authors><secondary-authors><author><style face="normal" font="default" size="100%">de Bello, Francesco</style></author></secondary-authors></contributors><titles><title><style face="normal" font="default" size="100%">At Limits of Life: Multidisciplinary Insights Reveal Environmental Constraints on Biotic Diversity in Continental Antarctica</style></title><secondary-title><style face="normal" font="default" size="100%">PLoS ONE</style></secondary-title><short-title><style face="normal" font="default" size="100%">PLoS ONE</style></short-title></titles><dates><year><style  face="normal" font="default" size="100%">2012</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jul-09-2013</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0044578</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">7</style></volume><pages><style face="normal" font="default" size="100%">e44578</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;div class=&quot;abstract toc-section&quot; style=&quot;color: rgb(51, 51, 51); font-family: arial; font-size: 16px; line-height: 16px;&quot;&gt;&lt;p style=&quot;margin-top: 0px; margin-bottom: 0.8125rem; font-family: inherit; font-size: 0.8125rem; line-height: 1.125rem; text-rendering: optimizeLegibility;&quot;&gt;Multitrophic communities that maintain the functionality of the extreme Antarctic terrestrial ecosystems, while the simplest of any natural community, are still challenging our knowledge about the limits to life on earth. In this study, we describe and interpret the linkage between the diversity of different trophic level communities to the geological morphology and soil geochemistry in the remote Transantarctic Mountains (Darwin Mountains, 80&amp;deg;S). We examined the distribution and diversity of biota (bacteria, cyanobacteria, lichens, algae, invertebrates) with respect to elevation, age of glacial drift sheets, and soil physicochemistry. Results showed an abiotic spatial gradient with respect to the diversity of the organisms across different trophic levels. More complex communities, in terms of trophic level diversity, were related to the weakly developed younger drifts (Hatherton and Britannia) with higher soil C/N ratio and lower total soluble salts content (thus lower conductivity). Our results indicate that an increase of ion concentration from younger to older drift regions drives a succession of complex to more simple communities, in terms of number of trophic levels and diversity within each group of organisms analysed. This study revealed that integrating diversity across multi-trophic levels of biotic communities with abiotic spatial heterogeneity and geological history is fundamental to understand environmental constraints influencing biological distribution in Antarctic soil ecosystems.&lt;/p&gt;&lt;div&gt;&amp;nbsp;&lt;/div&gt;&lt;/div&gt;&lt;div id=&quot;figure-carousel-section&quot; style=&quot;color: rgb(51, 51, 51); font-family: arial; font-size: 16px; line-height: 16px;&quot;&gt;&amp;nbsp;&lt;/div&gt;</style></abstract><issue><style face="normal" font="default" size="100%">9</style></issue></record></records></xml>