<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Bijoor, N. S.</style></author><author><style face="normal" font="default" size="100%">Czimczik, C. I.</style></author><author><style face="normal" font="default" size="100%">Pataki, D. E.</style></author><author><style face="normal" font="default" size="100%">Billings, S. A.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Effects of temperature and fertilization on nitrogen cycling and community composition of an urban lawn</style></title><secondary-title><style face="normal" font="default" size="100%">Global Change Biology</style></secondary-title><alt-title><style face="normal" font="default" size="100%">Global Change Biol</style></alt-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">-</style></keyword><keyword><style  face="normal" font="default" size="100%">c-3 and c-4</style></keyword><keyword><style  face="normal" font="default" size="100%">c-4 plants</style></keyword><keyword><style  face="normal" font="default" size="100%">c-4 weeds</style></keyword><keyword><style  face="normal" font="default" size="100%">carbon-isotope discrimination</style></keyword><keyword><style  face="normal" font="default" size="100%">climate</style></keyword><keyword><style  face="normal" font="default" size="100%">crabgrass</style></keyword><keyword><style  face="normal" font="default" size="100%">elevated co2</style></keyword><keyword><style  face="normal" font="default" size="100%">fescue</style></keyword><keyword><style  face="normal" font="default" size="100%">global change</style></keyword><keyword><style  face="normal" font="default" size="100%">nitrous oxide</style></keyword><keyword><style  face="normal" font="default" size="100%">oxide emissions</style></keyword><keyword><style  face="normal" font="default" size="100%">Pataki Lab</style></keyword><keyword><style  face="normal" font="default" size="100%">Research - Biogeochemical Cycles</style></keyword><keyword><style  face="normal" font="default" size="100%">soil temperatures</style></keyword><keyword><style  face="normal" font="default" size="100%">trace gas fluxes</style></keyword><keyword><style  face="normal" font="default" size="100%">turfgrass</style></keyword><keyword><style  face="normal" font="default" size="100%">warming</style></keyword><keyword><style  face="normal" font="default" size="100%">water-use efficiency</style></keyword><keyword><style  face="normal" font="default" size="100%">yield loss</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Sep</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">&lt;Go to ISI&gt;://000258257700012</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">9</style></number><volume><style face="normal" font="default" size="100%">14</style></volume><pages><style face="normal" font="default" size="100%">2119-2131</style></pages><isbn><style face="normal" font="default" size="100%">1354-1013</style></isbn><language><style face="normal" font="default" size="100%">English</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;We examined the influence of temperature and management practices on the nitrogen (N) cycling of turfgrass, the largest irrigated crop in the United States. We measured nitrous oxide (N2O) fluxes, and plant and soil N content and isotopic composition with a manipulative experiment of temperature and fertilizer application. Infrared lamps were used to increase surface temperature by 3.5 +/- 1.3 degrees C on average and control and heated plots were split into high and low fertilizer treatments. The N2O fluxes increased following fertilizer application and were also directly related to soil moisture. There was a positive effect of warming on N2O fluxes. Soils in the heated plots were enriched in nitrogen isotope ratio (delta N-15) relative to control plots, consistent with greater gaseous losses of N. For all treatments, C-4 plant C/N ratio was negatively correlated with plant delta N-15, suggesting that low leaf N was associated with the use of isotopically depleted N sources such as mineralized organic matter. A significant and unexpected result was a large, rapid increase in the proportion of C-4 plants in the heated plots relative to control plots, as measured by the carbon isotope ratio (delta C-13) of total harvested aboveground biomass. The C-4 plant biomass was dominated by crabgrass, a common weed in C-3 fescue lawns. Our results suggest that an increase in temperature caused by climate change as well as the urban heat island effect may result in increases in N2O emissions from fertilized urban lawns. In addition, warming may exacerbate weed invasions, which may require more intensive management, e.g. herbicide application, to manage species composition.&lt;/p&gt;</style></abstract><accession-num><style face="normal" font="default" size="100%">ISI:000258257700012</style></accession-num><notes><style face="normal" font="default" size="100%">&lt;p&gt;334YMTimes Cited:4Cited References Count:65&lt;/p&gt;</style></notes><auth-address><style face="normal" font="default" size="100%">&lt;p&gt;Pataki, DEUniv Calif Irvine, Dept Earth Syst Sci, Croul Hall, Irvine, CA 92697 USAUniv Calif Irvine, Dept Earth Syst Sci, Croul Hall, Irvine, CA 92697 USAUniv Calif Irvine, Dept Earth Syst Sci, Irvine, CA 92697 USAUniv Calif Irvine, Dept Ecol &amp;amp; Evolutionary Biol, Irvine, CA 92697 USAUniv Kansas, Dept Ecol &amp;amp; Evolutionary Biol, Lawrence, KS 66047 USAUniv Kansas, Kansas Biol Survey, Lawrence, KS 66047 USA&lt;/p&gt;</style></auth-address></record></records></xml>