<?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%">Wieder, R. K.</style></author><author><style face="normal" font="default" size="100%">Vitt, D. H.</style></author><author><style face="normal" font="default" size="100%">Burke-scoll, M.</style></author><author><style face="normal" font="default" size="100%">Scott, K. D.</style></author><author><style face="normal" font="default" size="100%">House, M.</style></author><author><style face="normal" font="default" size="100%">Vile, M. A.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Nitrogen and sulphur deposition and the growth of Sphagnum fuscum in bogs of the Athabasca oil sands region Alberta</style></title></titles><keywords><keyword><style  face="normal" font="default" size="100%">air emissions</style></keyword><keyword><style  face="normal" font="default" size="100%">aquatic vegetation</style></keyword><keyword><style  face="normal" font="default" size="100%">nitrogen</style></keyword><keyword><style  face="normal" font="default" size="100%">NOx</style></keyword><keyword><style  face="normal" font="default" size="100%">sulphur and SO2</style></keyword><keyword><style  face="normal" font="default" size="100%">wetlands</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2010</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.jlimnol.it/index.php/jlimnol/article/view/jlimnol.2010.s1.161/124</style></url></web-urls></urls><publisher><style face="normal" font="default" size="100%">Change </style></publisher><volume><style face="normal" font="default" size="100%">69</style></volume><pages><style face="normal" font="default" size="100%">9 pages </style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">One of the consequences of ongoing development of the oil sands reserve in the Athabasca Oil Sands Region (AOSR) near Fort McMurray, Alberta, Canada (56° 39' N, 111° 13' W) is an increase in emissions of nitrogen (N) and sulphur (S), with an attendant increases in regional atmospheric N and S deposition. Regional land cover across northeastern Alberta is a mixture of Boreal Mixedwood, Boreal Highlands, and Subarctic areas. Peatlands occupy between 22 and 66% of these natural regions, and the land cover of bogs varies between 6.7% in the Mixedwood Region to 46% in the Subarctic Region. Ombrotrophic bog ecosystems may be especially sensitive to atmospheric deposition of N and S. Across 10 ombrotrophic bog sites in the AOSR over four years (2005– 2008), we found no evidence of elevated deposition of NH4 +-N, NO3 –-N, total inorganic nitrogen (TIN; NH4 +-N plus NO3 –-N), or SO4 2–-S, with values measured using ion exchange resin collectors averaging 0.61 ± 04, 0.20 ± 0.01, 0.81 ± 0.04, and 1.14 ± 0.06 kg ha–1 y–1, respectively. Vertical growth and net primary production of Sphagnum fuscum, an indicator of elevated deposition, did not differ consistently across sites, averaging 11.8 ± 0.2 mm y–1 and 234 ± 3.3 g m–2 y–1, respectively, over the four years. Neither vertical growth nor net primary production of S. fuscum was correlated with growing season atmospheric N or S deposition. Our data provide a valuable benchmark of background values for monitoring purposes in anticipation of increasing N and S deposition over a broader geographic region within the AOSR.</style></abstract><custom2><style face="normal" font="default" size="100%">Athabasca Oil Sands Region (AOSR)</style></custom2><custom3><style face="normal" font="default" size="100%">http://www.worldcat.org/oclc/535620907</style></custom3><custom4><style face="normal" font="default" size="100%">OSEMB</style></custom4></record></records></xml>