00646nas a2200193   4500008004100000245007700041210006900118260001100187300001400198490001200212100002100224700002100245700002400266700002400290700002000314700002300334700002400357856007100381       2012                        eng d00aAeolian flux of biotic and abiotic material in Taylor Valley, Antarctica0 aAeolian flux of biotic and abiotic material in Taylor Valley Ant  c6/2012  a102 - 1110 v155-1561 aŠabacká, Marie1 aPriscu, John, C.1 aBasagic, Hassan, J.1 aFountain, Andrew, G1 aWall, Diana, H.1 aVirginia, Ross, A.1 aGreenwood, Mark, C.  uhttp://www.sciencedirect.com/science/article/pii/S0169555X1100622200532nas a2200145   4500008004100000245009700041210006900138260001200207300001400219490000700233100002700240700002100267700002100288856007700309       2012                        eng d00aCyanobacterial diversity across landscape units in a polar desert: Taylor Valley, Antarctica0 aCyanobacterial diversity across landscape units in a polar deser  c11/2012  a268 - 2780 v821 aMichaud, Alexander, B.1 aŠabacká, Marie1 aPriscu, John, C.  uhttp://onlinelibrary.wiley.com/doi/10.1111/j.1574-6941.2012.01297.x/full02476nas a2200145   4500008004100000245007200041210006900113260004800182300000800230490001000238520198300248100002102231700002102252856005702273       2012                        eng d00aWind as an ecological factor in the McMurdo Dry Valleys, Antarctica0 aWind as an ecological factor in the McMurdo Dry Valleys Antarcti  aBozeman, MTbMontana State Universityc2012  a2010 vPh.D.3 a<p>The aim of this work was to investigate the role of wind on the ecology of the McMurdo Dry Valleys in Antarctica (MDV), one of the coldest and driest deserts on Earth. The MDV landscape consists of a mosaic of permanently ice-covered lakes, ephemeral streams, exposed soils, and glaciers, all of which contain habitats dominated by microorganisms. Data on wind-driven flux of sediments and associated organic matter were collected using passive aeolian traps and dynamic mass erosion particle counters to investigate the timing, direction and magnitude of aeolian sediment transport. Combination of genomic techniques and phenotypical fingerprinting (pigment analysis) was used to examine microbial diversity over a wide variety of wind-eroded habitats across the MDV landscape to elucidate the role of wind dispersal on the contemporary distribution of microorganisms across the MDVs. Sediment entrainment occurs predominantly within 20 cm of the ground surface and has character of saltation bursts that occupy &lt;3% of the total time within a year. The high-energy winter föhn winds uplift sediments in the upper parts of the MDVs and transport them down-valley where they are deposited onto the surface of perennially ice-covered lakes and surrounding soils. The sediment that enters the water column of the lakes does not provide a significant source of organic carbon for bacterioplankton communities compared to the in situ production by phytoplankton but can be a source of new microbial propagules. The aeolian material is low in organic matter (&lt;1% dw) but is composed of a relatively large numbers of cyanobacterial taxa (~20 OTUs) that can be found in all other MDV habitats. In conclusion, wind distributes microorganisms across the MDV landscape but local environment selects for specific taxa. Predicted climate warming will increase the importance of wind transport, which will affect nutrient cycling and connectivity among MDV ecosystem components.</p>1 aŠabacká, Marie1 aPriscu, John, C.  uhttps://scholarworks.montana.edu/xmlui/handle/1/2171