Phosphorus Cycling in a Northern Hardwood Forest: Biological and Chemical Control

Wood, Tim; Bormann, Franz–Josef; Voigt, G. K.

doi:10.1126/science.223.4634.391

Cited by 217 publications

(122 citation statements)

References 14 publications

(12 reference statements)

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“…The accumulation of decomposing litter creates a medium with low P-sorption capacity that allows the close coupling of P mineralization and root uptake. A deterioration of the forest floor could limit this biological control on P availability and promote the transfer of P from the forest floor to the underlying mineral horizons where inorganic P in solution is generally low since most of the available P is adsorbed on soil constituents (Compton and Cole, 1998;Northup et al, 1995;Paré and Bernier, 1989a;Wood et al, 1984). In addition, the soil acidification caused by N and S deposition may also reduce P availability in the mineral horizons by increasing the P-fixing capacity of the soil (Mohren et al, 1986;Paré and Bernier, 1989b).…”

Section: Discussionmentioning

confidence: 99%

Temporal trends in the foliar nutritional status of the French, Walloon and Luxembourg broad-leaved plots of forest monitoring

et al. 2009

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Abstract• Two decades after the launching of the monitoring program of forest ecosystems in Europe (ICP forests), a unique data set is now available regarding the foliar nutritional status of the main broadleaved species growing in much-diversified sites (soil, climate).• This study focuses on the foliar concentration time series (1993 to 2005) of the French (RENECO-FOR), Walloon and Luxemburg broad-leaved plots. The aim is to show long-term trends while taking the inter-plot and inter-annual variability into account.• Two kinds of statistical processing were used to analyze the data on foliar chemistry: principal component analysis (PCAs) and linear mixed models. In general, the main temporal trends reveal a decrease in the foliar P concentration and a decrease in the foliar Ca concentration, except for European beech on acid soils.• These temporal patterns confirm the trends previously observed and could be explained by the joint actions of several processes that influence tree nutrition in the long term: tree age, N and S deposition, harvesting and climate. Mots-clés :Quercus robur / Quercus petraea / Fagus sylvatica / analyse de tendance / phosphore Résumé -Évolution du statut nutritionnel foliaire des placettes de feuillus des réseaux français, wallon et luxembourgeois de suivi des forêts.• Deux décennies après le lancement du programme de suivi des écosystèmes forestiers en Europe (ICP forests), un jeu de données unique est à présent disponible concernant le statut nutritionnel foliaire des principales essences feuillues implantées dans des stations très diversifies du point de vue du sol et du climat.• Cette étude se focalise sur les séries chronologiques de teneurs foliaires (1993 à 2005) des placettes de feuillus de France, Wallonie et Luxembourg. L'objectif est de mettre en évidence la tendance à long-terme tout en prenant en compte la variabilité inter-placette et inter-annuelle.• Deux types de traitements statistiques ont été utilisés pour analyser les données de nutrition foliaire : l'analyse en composantes principales (ACP) et les modèles linéaires mixtes. Globalement, la tendance principale est une diminution généralisée de la teneur foliaire en P and une diminution de la teneur foliaire en Ca, sauf en ce qui concerne le hêtre sur sols acides.• Ces tendances temporelles confirment celles déjà observées par le passé et pourraient être expliquées par l'action combinée de différents processus influençant la nutrition des arbres à long-terme (vieillissement, dépôts azotés et soufrés, exploitation, fructification).

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Section: Discussionmentioning

confidence: 99%

Temporal trends in the foliar nutritional status of the French, Walloon and Luxembourg broad-leaved plots of forest monitoring

et al. 2009

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“…Low levels of labile phosphorus may be expected in the highly weathered Ultisols of Watershed 55. These soils contain strong P-sorbing Al and Fe compounds (Wood et al 1984;Hatcher 1988;Dighton and Coleman 1992) that compete with the plant roots and soil microbes present in surface soil horizons for available phosphate in the soil solution. Walbridge et al (1991) reported that P-sorbing minerals, plant roots, and soil microbes all reached maximal levels in the near surface mineral horizons of Watersheds 1 (a low elevation, white pine plantation since 1957) and 18 (a low elevation, mixed hardwood, control watershed) at Coweeta.…”

Section: Discussionmentioning

confidence: 99%

“…Nutrients stored in woody debris, litterfall, and roots are slowly mineralized on their return to the soil system. However, high P-sorbing soils (e.g., Andisols, Oxisols, Ultisols) may lead to low phosphorus availability and subsequent limitations on biomass production in undisturbed forest ecosystems (Wood et al 1984;Vitousek 1984). Average standing crop biomass on high Psorbing soils for an undisturbed, hardwood watershed (WS 18) at the Coweeta LTER (Otto, NC) was partitioned as follows: 139.9 MT ha' 1 net aboveground and 51.4 MT ha" 1 belowground biomass and 4.4 MT ha" 1 litterfall dry mass production (Monk and Day 1988).…”

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confidence: 99%

The Effects of Disturbance Events on Labile Phosphorus Fractions and Total Organic Phosphorus in the Southern Appalachians

Wright

Coleman

1999

Soil Science

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Changes in labile soil phosphorus pools, together with changes in organic matter and total organic soil phosphorus levels, were measured following rhododendron harvest and hurricane windthrow events at the Coweeta Long Term Ecological Research (LTER) site. Seasonal soil samples were 1 taken every 3 months from June 1996 to September 1997. Soil cores were taken along four transects within each study area at distances approximately 1, 5, and 15 m upslope from the stream channel. Levels of resin P were low for all sites and sampling dates (<5 [jug PO 4 -P g soil" 1 ). Levels of bicarbonate inorganic P were <8 (jig PO 4 -P g soil" 1 for all sites and sampling dates, whereas bicarbonate organic P levels were somewhat higher and ranged from 6.5 to 26.6 jjig PO 4 -P g soil" 1. Microbial P levels were the most variable and ranged from 4.5 to 25.8 |xg PO 4 -P g soil" 1. In contrast, total organic P levels were high, 149 to 348 (jug PO 4 -P g soil" 1. For the 3 years after the disturbance events, there were no significant changes in labile phosphorus pools or in total organic phosphorus levels in the soil. This lack of significant differences is likely attributable to the low phosphorus, high P-sorbing status of the soils at Coweeta and the lack of erosion that followed these disturbance events. (Soil Science 1999;164:391-402)

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“…With large biomass accumulation in old-growth forests, mineralization of the organic P pool is the major pathway for the release of plant-available P (Wood et al 1984, Vitousek and Howarth 1991, Vitousek et al 2010. Unlike N, which can be acquired both from the soil through the roots and from the atmosphere via the leaves (Sparks 2009), P is exclusively absorbed from the soil through the roots (Rennenberg and Herschbach 2013).…”

Section: The Hypothesis Of Progressive N Saturationmentioning

confidence: 99%

Weak growth response to nitrogen deposition in an old‐growth boreal forest

Fang

2014

Ecosphere

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Citation: Du, E., and J. Fang. 2014. Weak growth response to nitrogen deposition in an old-growth boreal forest.Ecosphere 5(9):109. http://dx.doi.org/10.1890/ES14-00109.1Abstract. Nitrogen (N) deposition has been enhanced globally due to the dramatic increase in anthropogenic N emissions, but the effects of N deposition on the growth of old-growth forests remain poorly understood. A three-year N enrichment experiment (0, 20, 50 and 100 kg N ha À1 yr À1) was conducted in an old-growth boreal forest in Northeast China to explore its growth response to enhanced N deposition. Nitrogen enrichment significantly increased N availability but caused only a very weak stimulation of growth (,3 kg C/kg N), indicating a minor N limitation. Nitrogen enrichment did not significantly influence the mass production of needle-leaves but increased the production of woody biomass, leading to a slight improvement in growth efficiency. Nitrogen content increased and phosphorus (P) content decreased in freshly fallen needle-leaves, leading to an increase of N:P ratios. The failure of P acquisition to match the increased N uptake suggests a limitation of soil P availability. Our results support the hypothesis of progressive N saturation and indicate that N deposition may cause a very weak stimulation of carbon sequestration in old-growth forests.

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Phosphorus Cycling in a Northern Hardwood Forest: Biological and Chemical Control

Abstract: Phosphorus is tightly conserved within the northern hardwood forest ecosystems at Hubbard Brook, New Hampshire. Detailed analyses of the soil system indicate that biological and geochemical processes, stratified within the profile, regulate phosphorus retention.

Cited by 217 publications

References 14 publications

Temporal trends in the foliar nutritional status of the French, Walloon and Luxembourg broad-leaved plots of forest monitoring

Temporal trends in the foliar nutritional status of the French, Walloon and Luxembourg broad-leaved plots of forest monitoring

The Effects of Disturbance Events on Labile Phosphorus Fractions and Total Organic Phosphorus in the Southern Appalachians

Weak growth response to nitrogen deposition in an old‐growth boreal forest

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