<?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%">Mathers, N. J.</style></author><author><style face="normal" font="default" size="100%">Harms, B.</style></author><author><style face="normal" font="default" size="100%">Dalal, R. C.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Impacts of land-use change on nitrogen status and mineralization in the Mulga Lands of Southern Queensland</style></title><secondary-title><style face="normal" font="default" size="100%">Austral Ecology</style></secondary-title><alt-title><style face="normal" font="default" size="100%">Austral Ecol</style></alt-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">acacia aneura</style></keyword><keyword><style  face="normal" font="default" size="100%">ammonium</style></keyword><keyword><style  face="normal" font="default" size="100%">australia</style></keyword><keyword><style  face="normal" font="default" size="100%">carbon</style></keyword><keyword><style  face="normal" font="default" size="100%">cenchrus ciliaris</style></keyword><keyword><style  face="normal" font="default" size="100%">conversion</style></keyword><keyword><style  face="normal" font="default" size="100%">dynamics</style></keyword><keyword><style  face="normal" font="default" size="100%">forest</style></keyword><keyword><style  face="normal" font="default" size="100%">in situ n mineralization</style></keyword><keyword><style  face="normal" font="default" size="100%">microbial immobilization</style></keyword><keyword><style  face="normal" font="default" size="100%">nitrate</style></keyword><keyword><style  face="normal" font="default" size="100%">pasture development</style></keyword><keyword><style  face="normal" font="default" size="100%">snap model</style></keyword><keyword><style  face="normal" font="default" size="100%">soil organic-matter</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2006</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;://000240562700004</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">6</style></number><volume><style face="normal" font="default" size="100%">31</style></volume><pages><style face="normal" font="default" size="100%">708-718</style></pages><isbn><style face="normal" font="default" size="100%">1442-9985</style></isbn><language><style face="normal" font="default" size="100%">English</style></language><abstract><style face="normal" font="default" size="100%">In the semiarid Mulga Lands of southern Queensland soil nitrogen (N) levels have declined after clearance of the native mulga (Acacia aneura F. Muell. ex Benth.) and conversion to grazed buffel grass (Cenchrus ciliaris) pasture. At three mulga sites, declines in soil total N ranged from 14% to 28% in the surface 10 cm of soil. In situ net N mineralization from December 2003 until November 2004 in the surface 10 cm was 49.5 kg N ha(-1) year(-1) in the mulga woodland, 48.2 kg N ha(-1) year(-1) in the young (&lt; 5 years old) buffel pasture (previously sown to wheat (Triticum aestivum L.) and 34.6 kg N ha(-1) year(-1) in the old buffel pasture (&gt; 20 years). Ammonium-N was the dominant N pool under mulga in the top 30 cm, while nitrate-N was dominant under the buffel pastures. Although ammonium-N under mulga was significantly different to that for 21-year-old buffel pasture at all depths, nitrification and net N mineralization were not different between the three land uses at any depth or in the entire 90 cm profile. The Soil Nitrogen Availability Predictor model was used to predict field N mineralization rates for the mulga woodland and 21-year-old buffel pasture by using a medium-term (6-week) laboratory incubation to establish basal rates of N mineralization. The Soil Nitrogen Availability Predictor overestimated annual net N mineralization in the 0-30 cm depth of mulga by 9% and underestimated it by 28% for the old buffel pasture. The Soil Nitrogen Availability Predictor could be modified further to accurately predict net N mineralization for the mulga woodlands.</style></abstract><accession-num><style face="normal" font="default" size="100%">ISI:000240562700004</style></accession-num><notes><style face="normal" font="default" size="100%">084VOTimes Cited:3Cited References Count:30ISI Document Delivery No.: 084VOTimes Cited: 3Cited Reference Count: 30Cited References: *AUSTR STAT ENV CO, 2001, STAT ENV *DEP NAT RES MIN, 2003, LAND COV CHANG QUEEN *GEOSC AUSTR, 2003, VEG PREEUR SETTL 178 *QUEENSL HERB, 2003, REG EC MAPP VERS 4 *STATSOFT INC, 2001, STATISTICA DAT AN SO *TECHN IND SYST, 1977, IND SIM DET NITR PHO BLUMFIELD TJ, 2003, FOREST ECOL MANAG, V179, P55 BODDEY RM, 2000, NUTR CYCL AGROECOSYS, V57, P235 DALAL RC, 1986, AUST J SOIL RES, V24, P265 DALAL RC, 2005, AUST J SOIL RES, V43, P13, DOI 10.1071/SR04044 DALAL RC, 2005, AUST J SOIL RES, V43, P179, DOI 10.1071/SR04076 FAIRFAX RJ, 2000, BIOL CONSERV, V94, P11 GONZALEZPRIETO SJ, 1995, BIOL FERT SOILS, V20, P237 GRAHAM TWG, 1981, AUSTR J EXPT AGR ANI, V21, P109 HARMS B, 2003, 37 NCAS AUSTR GREENH HARMS BP, 2005, AUST J BOT, V53, P639, DOI 10.1071/BT04154 ISBELL RF, 2002, AUSTR SOIL CLASSIFIC JOHNSON PA, 1994, ASTROPART PHYS, V2, P257 KRULL ES, 2003, GEODERMA, V112, P1 MURTY D, 2002, GLOBAL CHANGE BIOL, V8, P105 NEILL C, 1995, SOIL BIOL BIOCHEM, V27, P1167 NEILL C, 1999, SOIL BIOL BIOCHEM, V31, P567 PAUL KI, 2002, AUST J SOIL RES, V40, P1011, DOI 10.1071/SR01114 PURI G, 1999, SOIL BIOL BIOCHEM, V31, P929 RAISON RJ, 1987, SOIL BIOL BIOCHEM, V29, P1557 RECOUS S, 1990, SOIL BIOL BIOCHEM, V22, P913 REINERS WA, 1994, ECOL APPL, V4, P363 RHOADES CC, 1999, SOIL BIOL BIOCHEM, V31, P1347 THACKWAY R, 1995, INTERIM BIOGEOGRAPHI WILSON BA, 1999, CONSERVATION STATUSMathers, Nicole J. Harms, Ben Dalal, Ram C.Blackwell publishingOxford</style></notes><auth-address><style face="normal" font="default" size="100%">Mathers, NJCRC Greenhouse Accounting, 80 Meiers Rd, Indooroopilly, Qld 4068, AustraliaCRC Greenhouse Accounting, 80 Meiers Rd, Indooroopilly, Qld 4068, AustraliaCRC Greenhouse Accounting, Indooroopilly, Qld 4068, AustraliaQueensland Dept Nat Res Mines &amp; Water, Indooroopilly, Qld 4068, Australia</style></auth-address></record></records></xml>