The effect of nitrogen deposition on nitrification, carbon and nitrogen mineralisation and litter C:N ratios in oak (Quercus robur L.) forests

Månsson, Katarina; Falkengren‐Grerup, Ursula

doi:10.1016/s0378-1127(02)00535-2

Cited by 45 publications

(23 citation statements)

References 29 publications

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“…Leaf litter accumulation zones Zone without leaf litter (Mansson and Falkengren-Grerup, 2003). According to C/N ratio, sediments with leaf litter of A. negundo had a higher content of available organic matter than sediments of A. glutinosa leaf accumulation site.…”

Section: Datementioning

confidence: 95%

Influence of invasiveAcer negundoleaf litter on benthic microbial abundance and activity in the littoral zone of a temperate river in Lithuania

Krevš

Kucinskiene

2017

Knowl. Manag. Aquat. Ecosyst.

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-Riparian forests are known as important source of allochthonous organic matter entering to water ecosystems via fallen leaves. However, leaf litter, depending on their quality, may create different conditions for benthic microorganisms functioning in littoral zone of water bodies. In order to evaluate the impact of riparian invasive Acer negundo on littoral water zone of the River Neris (Lithuania), we performed physicochemical and microbiological investigations in bottom sediments of three different sites of the river. One sampling site was close by riparian A. negundo, another close by native Alnus glutinosa location and a third zone was near the shore without riparian vegetation. Content of nutrients in the littoral sediments differed between invasive and native trees leaf litter accumulation sites, while not always significantly. The highest microbial densities as well as benthic community respiratory activity (expressed as the rate of organic carbon mineralization) occurred in A. negundo leaves accumulation site. In sediments of this site, the most intensive anaerobic terminal organic carbon mineralization process À sulfate reduction and the highest concentration of hydrogen sulfide were also observed. Differences in the intensity of mineralization processes between sites suggest that the replacement of the riparian native species such as dominant A. glutinosa by invasive A. negundo with higher biodegradability leaves may induce local changes in organic matter processing in the littoral zone of the river. The increase of littoral bioproductivity in the accumulation zone of A. negundo leaf litter can occur due to the inflow of available organic matter and its intensive mineralization.Keywords: leaf litter / benthic microorganisms / river Résumé -Influence de la litière d'Acer negundo invasif sur l'abondance et l'activité microbienne benthique dans la zone littorale d'une rivière en Lituanie. Les forêts riveraines sont connues comme source importante de matière organique allochtone entrant dans les écosystèmes aquatiques via les feuilles tombées. Cependant, la litière, en fonction de sa qualité, peut créer différentes conditions pour que les microorganismes benthiques fonctionnent dans la zone littorale des masses d'eau. Afin d'évaluer l'impact de l'Acer negundo invasif dans la zone d'eau littorale de la rivière Neris (Lituanie), nous avons procédé à des recherches physico-chimiques et microbiologiques dans les sédiments de trois sites différents de la rivière. Un site d'échantillonnage était proche de A. negundo riverain, un autre proche de l'emplacement d'Alnus glutinosa indigène et une troisième zone était près d'une rive sans végétation riveraine. Les contenus en nutriments dans les sédiments du littoral différaient entre les sites d'accumulation de déchets de feuilles d'arbres envahissants et natifs, bien qu'ils ne soient pas toujours significativement différents. Les densités microbiennes les plus élevées ainsi que l'activité respiratoire de la communauté benthique (exprimée en taux de minéral...

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Section: Datementioning

confidence: 95%

Influence of invasiveAcer negundoleaf litter on benthic microbial abundance and activity in the littoral zone of a temperate river in Lithuania

Krevš

Kucinskiene

2017

Knowl. Manag. Aquat. Ecosyst.

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“…Samples for each trough were collected weekly and composited monthly by volume yielding six weighted composite samples. Solution analyses for NH 4 and NO 3 were conducted on monthly composites as described above; TKN analyses were conducted on composited samples quarterly during the calendar year; TON was calculated as above. We used the annual average TF TON concentration and the total TF volume to calculate TON fluxes through the canopy.…”

Section: Measurementsmentioning

confidence: 99%

“…Total organic N export was not measured during the study period. We measured NO 3 , NH 4 , and total dissolved nitrogen (DON=TN-NO 3 -NH 4 Nitrogen export via stream was greater from high elevation WS27, concentration of NO 3 -N in deep lysimeters, below the rooting zone suggesting leaching losses, was significantly greater in northern hardwood; this vegetation community type occupies all but a very small portion of WS 27. Shallow lysimeter N concentrations were also significantly greater on northern hardwood; while high elevation mixed oak site had deep lysimeter NO 3 concentrations averaging 0.007 mg L −1 , not significantly different from the low elevation, WS18, plots.…”

Section: Measures Of N Availability -Soil N and Lysimetersmentioning

confidence: 99%

Nitrogen deposition and cycling across an elevation and vegetation gradient in southern Appalachian forests

Knoepp

Vose

Swank

2008

International Journal of Environmental Studies

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“…Finally, the stands situated at lower altitudes have a minor value of C/N ratio. This, together with the increased acidity existing at altitudes lower by poor drainage and agricultural uses, results in a bad humification (Mansson & Falkengren-Grerup, 2003). Within climatic factors, annual precipitation and mean temperature were the variables with a greater number of relationships to soil parameters (Table IV).…”

Section: Impact Of Site On the Composition Of The Mineral Topsoilmentioning

confidence: 99%

“…Most of the soils are very strongly acidic (4.0 5pH B4.7), with pH values ranging from 3.90Á5.60 (Table II); however, the acidity does not prevent them from presenting optimal humification, as demonstrated by the values of the C/N ratio (Mansson & Falkengren-Grerup, 2003;Oostra et al, 2006;Zeller et al, 2007), giving rise to moder type humus (Díaz-Maroto & Vila-Lameiro, 2007a). The process of mineralization is low, as demonstrated in the average values of the parameters pH, OM and C/N ratio (Gallardo et al, 1995;Caravaca et al, 1999).…”

Section: Chemical-nutritive Properties and Nutrient Concentrationsmentioning

confidence: 99%

Natural forests of sessile oak (Quercus petraeaLiebl.) in the northwest of the Iberian Peninsula – influence of soil type and site on the composition of the mineral topsoil

Diaz-Maroto¹,

Vila‐Lameiro²

2009

Acta Agriculturae Scandinavica, Section B - Soil & Plant Sc

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The mineral topsoil in 52 sites with different soil type under natural forests of Quercus petraea was studied in the northwest of the Iberian Peninsula. As a result of the anthropogenic influence, most of these forests are situated where the topography complicates their harvesting. The substrates are siliceous and the soils are mainly regosols. These soils are more frugal than soils under other oaks (Q. robur and Q. pyrenaica) that occupy the largest surface in the zone. The chemical properties were similar to those reported as the optimal for oak forests in the study area: pH very homogeneous, giving rise to typically acidic soils, disabling desirable conditions for humification, as verified by C/N ratio values and the presence of moder type humus. Although the base cations can be considered as high compared with Q. robur soils (except for copper), the phosphorus in the topsoil was clearly less (12.6 versus 21.8 ppm), indicating that these are mature forests that have not undergone changes in land use. Significant differences between soil types, chemical composition (pH, nitrogen, phosphorus, iron, and zinc) and topsoil fertility were observed. In the same way, the analysis of site conditions showed the existence of statistical differences with pH, zinc, C/N ratio, magnesium and copper content. The ecologic variables with the highest number of significant relationships with the topsoil parameters were altitude, annual precipitation and annual mean temperature.

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The effect of nitrogen deposition on nitrification, carbon and nitrogen mineralisation and litter C:N ratios in oak (Quercus robur L.) forests

Cited by 45 publications

References 29 publications

Influence of invasiveAcer negundoleaf litter on benthic microbial abundance and activity in the littoral zone of a temperate river in Lithuania

Influence of invasiveAcer negundoleaf litter on benthic microbial abundance and activity in the littoral zone of a temperate river in Lithuania

Nitrogen deposition and cycling across an elevation and vegetation gradient in southern Appalachian forests

Natural forests of sessile oak (Quercus petraeaLiebl.) in the northwest of the Iberian Peninsula – influence of soil type and site on the composition of the mineral topsoil

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