Patterns of dissolved organic carbon and nitrogen fluxes in deciduous and coniferous forests under historic high nitrogen deposition

Sleutel, Steven; Vandenbruwane, Jeroen; Schrijver, An De; Wuyts, Karen; Moeskops, Bram; Verheyen, Kris; Neve, Stefaan De

doi:10.5194/bg-6-2743-2009

Cited by 55 publications

(31 citation statements)

References 54 publications

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“…This range is similar to that observed in the UK, between 20 and 50 % (Cape et al, 2004;González Benítez et al, 2009;Vanguelova et al, 2010). Other recent European studies have shown up to 15 % at the Belgian coast (Bencs et al, 2009) and 30 % in Flanders, Belgium (Sleutel et al, 2009), 23 % in the Czech Republic (Kopacek et al, 1997), 38 % in Poland (Kram, 2008), between 17 % and 23 % in the eastern Mediterranean (Mace et al, 2003;Violaki et al, 2010), 8 % in Germany (Michalzik and Matzner, 1999) and between 14 % and 41 % in Finland (Mustajarvi et al, 2008;Piirainen et al, 1998). The available data are shown in Fig.…”

Section: Comparison With the Literaturesupporting

confidence: 73%

Organic nitrogen in precipitation across Europe

et al. 2012

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Abstract. Measurements of total nitrogen and inorganic nitrogen in precipitation samples from NitroEurope sites across Europe permit the calculation of organic nitrogen concentrations and wet deposition, by difference. The contribution of organic N to total N in precipitation ranged from only a few % to around 40 % across 18 sites from northern Finland to Italy, similar to results from previous individual studies. This paper presents the absolute and relative contributions of organic N to wet N deposition across Europe, and examines seasonal trends. There were only weak correlations with other solutes in precipitation. These simple statistics indicate that sources of organic N in precipitation vary across Europe, and that no single source is responsible. The organic N contributes to total N deposition, yet this input is rarely quantified in nitrogen budgets.

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Section: Comparison With the Literaturesupporting

confidence: 73%

Organic nitrogen in precipitation across Europe

et al. 2012

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“…Vitousek and Howarth, 1991;Aber et al, 1998Aber et al, , 2003Magill et al, 2004). These studies often find that DOC concentration in soil solution increases with elevated N deposition (Yano et al, 2000;McDowell et al, 2004;Pregitzer et al, 2004;Adams et al, 2005;Findlay, 2005;Sleutel et al, 2009;Rappe-George et al, 2013).…”

Section: Lu Et Al: Long-term Nitrogen Addition Decreases Carbon Lmentioning

confidence: 99%

“…To explore the importance of DOC effluxes under elevated N deposition in forest ecosystems, ecologists have conducted such studies by the methods of simulating N deposition or using natural N deposition gradients (Evans et al, 2008;Sleutel et al, 2009). Until now, these studies are limited to DOC dynamics (e.g.…”

Section: Lu Et Al: Long-term Nitrogen Addition Decreases Carbon Lmentioning

confidence: 99%

Long-term nitrogen addition decreases carbon leaching in a nitrogen-rich forest ecosystem

Gilliam

et al. 2013

Biogeosciences

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Dissolved organic carbon (DOC) plays a critical role in the carbon (C) cycle of forest soils, and has been recently connected with global increases in nitrogen (N) deposition. Most studies on effects of elevated N deposition on DOC have been carried out in N-limited temperate regions, with far fewer data available from N-rich ecosystems, especially in the context of chronically elevated N deposition. Furthermore, mechanisms for excess N-induced changes of DOC dynamics have been suggested to be different between the two kinds of ecosystems, because of the different ecosystem N status. The purpose of this study was to experimentally examine how long-term N addition affects DOC dynamics below the primary rooting zones (the upper 20 cm soils) in typically N-rich lowland tropical forests. We have a primary assumption that long-term continuous N addition minimally affects DOC concentrations and effluxes in N-rich tropical forests. Experimental N addition was administered at the following levels: 0, 50, 100 and 150 kg N ha⁻¹ yr⁻¹, respectively. Results showed that seven years of N addition significantly decreased DOC concentrations in soil solution, and chemo-physical controls (solution acidity change and soil sorption) rather than biological controls may mainly account for the decreases, in contrast to other forests. We further found that N addition greatly decreased annual DOC effluxes from the primary rooting zone and increased water-extractable DOC in soils. Our results suggest that long-term N deposition could increase soil C sequestration in the upper soils by decreasing DOC efflux from that layer in N-rich ecosystems, a novel mechanism for continued accumulation of soil C in old-growth forests

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“…In the last decade the number of research papers addressing the evaluation of organic nitrogen in precipitation has increased and the mosaic of our knowledge is being continuously supplemented (Neff et al 2002;Cornell et al 2003;Cape et al 2004;Zhang et al 2008;Bencs et al 2009;Benitez et al 2009Benitez et al , 2010Pelster et al 2009;Sleutel et al 2009;Violaki et al 2010).…”

Section: Institute Of Forest Ecology Faculty Of Forestry and Wood Tementioning

confidence: 99%

Organic and inorganic nitrogen in precipitation and in forest throughfall at Bílý Kříž site (Beskydy Mts., Czech Republic)

Drápelová¹

2012

J. For. Sci.

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Organic nitrogen is an important but yet not very well explored component of nitrogen deposition. In this study concentrations and fluxes of organic and inorganic nitrogen in bulk precipitation in an open field (BOF) and in throughfall (THR) were evaluated at the Bílý Kříž experimental site (Moravian-Silesian Beskydy Mts., Czech Republic, 908 m a.s.l.) with a young Norway spruce stand. The results of a two-year study (2008 and 2009) were compared with the results obtained during the same time period on forest plots included in ICP Forests Programme in the Czech Republic. Total nitrogen deposition in BOF at the Bílý Kříž site amounted to about 918 mg·m–2·a–1, the contribution of organic nitrogen was about 8%. Total nitrogen flux with THR at Bílý Kříž was about 1,305 mg·m–2·a–1 during the studied years and organic N accounted for 12% of this amount. The ranges of the two-year average values found for total nitrogen flux on ICP Forests plots throughout the Czech Republic were as follows: 759–1,857 mg N·m–2·a–1 with 7–38% contribution of organic N in BOF and 928–3,816 mg N·m–2·a–1 with 7–20% contribution of organic N in THR. The share of organic nitrogen in THR nitrogen fluxes at Bílý Kříž proved clear seasonality with maxima in July. A highly significant correlation between N-NH4+   and N-NO3–   concentrations in BOF suggested the common anthropogenic source of these substances at the Bílý Kříž site. No significant correlation was found either between organic N and N-NH4+ or between organic N and N-NO3– concentrations in BOF. Cumulative deposition charts showed different behaviour of particular nitrogen deposition components while passing through the canopy.

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Patterns of dissolved organic carbon and nitrogen fluxes in deciduous and coniferous forests under historic high nitrogen deposition

Cited by 55 publications

References 54 publications

Organic nitrogen in precipitation across Europe

Organic nitrogen in precipitation across Europe

Long-term nitrogen addition decreases carbon leaching in a nitrogen-rich forest ecosystem

Organic and inorganic nitrogen in precipitation and in forest throughfall at Bílý Kříž site (Beskydy Mts., Czech Republic)

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