Peer-Reviewed Journal Details
Mandatory Fields
Prendergast-Miller, MT;de Menezes, AB;Farrell, M;Macdonald, LM;Richardson, AE;Bissett, A;Toscas, P;Baker, G;Wark, T;Thrall, PH
2015
June
Soil Biology & Biochemistry
Soil nitrogen pools and turnover in native woodland and managed pasture soils
Published
WOS: 5 ()
Optional Fields
DISSOLVED ORGANIC NITROGEN MICROBIAL BIOMASS-C AMINO-ACIDS EXTRACTION METHOD AUSTRALIAN SOILS CARBON PEPTIDES MINERALIZATION MICROORGANISMS ACQUISITION
85
63
71
Dissolved organic nitrogen (DON) is a significant nitrogen (N) pool in most soils and is considered to be important for N cycling. The present study focused on paired sites of native remnant woodland and managed pasture at three locations in south-eastern Australia. Improved understanding of N cycling is important for assessing the impact of agriculture on soil processes and can guide conservation and restoration soil management strategies to maintain remnant native woodland systems, which currently exist as small pockets of woodland within extensive managed pasture landscapes. Organic and inorganic N pools were quantified, as well as the rates of amino acid and peptide mineralisation in the paired native woodland and managed pasture systems. Soil DON dominated the soil N pool in both land uses, and the proportion of DON to other N pools was greatest at the most N-limited site (up to similar to 70% of extractable N). In both land uses soil ammonium and free amino acid concentrations were similar (similar to 20% of extractable N), and soil nitrate formed the smallest N pool (
0038-0717
10.1016/j.soilbio.2015.02.036
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