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Sparrius, L. B./ J. Sevink/ A. M. Kooijman 2012: Effects of nitrogen deposition on soil and vegetation in primary succession stages in inland drift sands. - Plant and Soil 353(1-2): 261-272. [RLL List # 226 / Rec.# 33643]
Keywords: Al:Ca ratio/ Base cations/ Inland dunes/ Lichens/ Soil acidification
Abstract: Background and aims: Primary succession was studied in acid inland drift sands. Main research questions were: 1) How do vegetation and soil change during succession? 2) How are soil parameters and species abundance affected by atmospheric nitrogen deposition?Methods: One hundred sixty-five plots were selected in 21 drift sands throughout The Netherlands, divided over eight succession stages from bare sand to dry heath and within a gradient in nitrogen deposition. Vegetation development and soil parameters were described and water-extractable elements measured and differences between high (>30 kg N ha year) and lower nitrogen deposition sites calculated. Results: Vegetation cover and height increased during succession. Lichens contributed most to plant species diversity. Thickness of Ah horizon increased and pH decreased and concentrations of Fe, Al, S increased. Base cations increased as well, despite the drop in pH. Also, water-extractable ammonium, nitrate and phosphate increased, along with the NH4:NO3 ratio. Sites with high nitrogen deposition had higher NH4:NO3 and Al:Ca ratios, lower pH, higher cover of algae, lower lichen and total species diversity, more Pinus sylvestris seedlings and more species of late succession stages. Conclusions: Drift sand succession seems to be mainly driven by an increase in organic matter, but is accelerated by nitrogen deposition. © 2011 The Author(s).
URL: http://dx.doi.org/10.1007/s11104-011-1029-y
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