Nutrient dynamics in decaying leaves of Fagus sylvatica L. and needles of Abies alba Mill.

Rutigliano, F. A.; Alfani, Anna; Bellini, Lorenzo; Santo, A. Vírzo De

doi:10.1007/s003740050409

Cited by 25 publications

(16 citation statements)

References 17 publications

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“…The data of this study suggests the order of mobility of elements to be K > Mg > P > S > Ca, Mn, N, which generally corresponds to that previously reported for other forest systems and tree species [15,31]. This pattern is partially due to the physical and biological degradation of cell walls and membranes required before the release of certain elements.…”

Section: Figure 2 (Continued)supporting

confidence: 88%

“…Thus, the total losses of P from needles throughout the study period ranged from 51% in the unprepared harvested plot to 77% in the prepared plot (table V, figure 2b). Other studies have described similar patterns of P loss in incubated leaves of Pinus radiata [3,8] and other species [16,31]. In incubated twigs, P was accumulated during the first 9 months and levels then decreased rapidly.…”

Section: Nutrient Dynamics In Decomposing Residuessupporting

confidence: 64%

“…The K content of twigs also decreased throughout the study period, although the losses were not continuous. High losses of K have been reported for other species [15,31]. The high mobility of K is attributed to the fact that this element it is not a constituent of cell structures, and that its movement is mainly due to physical leaching [2].…”

Section: Figure 2 (Continued)mentioning

confidence: 99%

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Effects of sylvicultural practices on nutrient status in a Pinus radiata plantation: Nutrient export by tree removal and nutrient dynamics in decomposing logging residues

2001

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-The effects of logging residue management practices on export and dynamics of nutrients were studied in a plantation of Pinus radiata D. Don growing on an infertile soil, in a humid, temperate area of NW Spain. The export of nutrients due to the removal of wood and logging residues during thinning and clear-cutting was evaluated by estimation of nutrient stores in the above-ground biomass and in the soil. Nutrient dynamics in decomposing slash needles and twigs were monitored over one year in a thinned stand and in an adjacent clear-cut area. Comparison of nutrient release in decaying residues with the nutrient store in tree biomass as well as inputs via litterfall and atmosphere allowed discussion of possible implications for sustainable sylviculture in these plantations. Nutrient release from decomposing material increased following clear-cutting and to an even greater extent, after mechanical incorporation of logging residues to the mineral soil, which substantially increased the short-term flush of some nutrients. logging residues / decomposition / tree harvesting / thinning / forest nutrient cycling Résumé -Effets des pratiques forestières sur la nutrition d'un peuplement de Pinus radiata : exportation des éléments minéraux et dynamique des résidus en décomposition. Les effets de l'utilisation des résidus d'exploitations forestières sur l'exportation et la dynamique des éléments minéraux ont été étudiés dans une plantation de Pinus radiata D. Don située sur une station non fertile et dans une région humide et tempérée du Nord-Ouest de l'Espagne. Le flux d'éléments minéraux dû à l'exportation du bois et des résidus de l'exploitation forestière à la suite d'une éclaircie et d'une coupe rase a été évalué à partir de l'estimation des réserves d'éléments minéraux dans la biomasse aérienne forestière et dans le sol. La dynamique des éléments minéraux provenant des résidus en décomposition d'aiguilles et de brindilles a été suivi pendant un an dans une parcelle éclaircie et aussi dans une zone de déboisement adjacente. La comparaison de la libération d'éléments minéraux en décomposition avec la réserve d'éléments minéraux dans la biomasse des arbres, de même que les apports par les pluviolessivats et les pluies incidentes nous ont permis de discuter des implications possibles pour assurer la pérennité de la production forestière. La libération des éléments minéraux à partir de matières en décomposition augmente après le défrichement total, et ceci tout particulièrement après l'incorporation mécanique des résidus d'exploitations forestières au sol minéral, laquelle augmente de façon appréciable la libération d'éléments minéraux. résidus d'exploitation forestière / décomposition / récolte / éclaircissement / dynamique des éléments minéraux Ann. For. Sci. 58 (2001) [411][412][413][414][415][416][417][418][419][420][421][422] 411

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Section: Figure 2 (Continued)supporting

confidence: 88%

Section: Nutrient Dynamics In Decomposing Residuessupporting

confidence: 64%

Section: Figure 2 (Continued)mentioning

confidence: 99%

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Effects of sylvicultural practices on nutrient status in a Pinus radiata plantation: Nutrient export by tree removal and nutrient dynamics in decomposing logging residues

2001

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“…Microbial immobilization is a major mechanism [25,33]. The status of a nutrient, whether it is limiting or non-limiting to microbial activity, determines its release dynamics.…”

Section: Initial Litter Quality and Nutrient Dynamicsmentioning

confidence: 99%

Nutrient dynamics in decomposing needles ofPinus luchuensisafter typhoon disturbance in a subtropical environment

2006

Ann. For. Sci.

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-Decomposition of typhoon-generated and normally fallen needles and their dynamical patterns of nutrient release for ten elements (C, N, P, K, Ca, Mg, S, Fe, Al, and Mn) were investigated over 3 yr using the litterbag technique in a subtropical pine plantation (Pinus luchuensis Mayr.) in Okinawa, southwestern Japan. After 3 yr, decomposition rates (k values) were 0.361 and 0.323 yr −1 , respectively, for typhoon-generated and normally fallen needles. The typhoon-generated needles decomposed significantly more rapidly than the normally fallen needles did, which was due to the higher N and P concentrations. Nutrient transfer patterns for elements varied greatly. However, significant differences in mass dynamic patterns of elements between typhoon-generated and normally fallen needles were found only in N and P (P < 0.001). Nutrient mobilities during the decomposition processes were similar in both typhoon-generated and normally fallen needles and was ordered as follows:Rapid decomposition with rapid release of P and N in typhoon-generated needles indicates that typhoon disturbances can drive P and N cycling at a somewhat higher rates, which is more important from the standpoint of forest productivity since P and N are limiting nutrients in the subtropical forests in Okinawa.litter chemical quality / needle decomposition / nutrient release / pine plantation / Pinus luchuensis / typhoon impact Résumé -Dynamiques des nutriments dans les aiguilles en décomposition de Pinus luchensis après les perturbations liées à un typhon dans un environnement subtropical. La décomposition des chutes d'aiguilles normales et occasionnées par un typhon et leur modèle de libération des nutriments ont été étudiés pour 10 éléments (C, N, P, K, Ca, Mg, S, Fe, Al et Mn). L'étude a été faite dans une plantation de pin (Pinus luchensis Mayr.) à Okinawa (SO du Japon). Elle a duré 3 ans et a utilisé la technique des bacs à litière. Après 3 ans les taux de décomposition étaient de 0,361 et 0,323 an −1 respectivement pour les chutes d'aiguilles liées au typhon et les chutes normales d'aiguilles. Les chutes aiguilles liées au typhon se décomposent significativement plus rapidement que les chutes normales d'aiguilles, ce qui est du à une plus forte concentration en N et P. Les modèles de transfert des éléments varient fortement. Toutefois, des différences significatives dans les modèles de dynamique de masse des éléments entre les deux types de chute d'aiguille ont seulement été mises en évidence pour N et P (P < 0,001). La mobilité des éléments pendant les processus de décomposition étaient similaires dans les deux types de chute d'aiguilles et s'ordonnait de la façon suivante : K > Ca ≥ Mg ≥ C > S ≥ N ≥ Mn > P Fe ≥ Al. Une décomposition rapide avec une libération rapide de P et N pour les aiguilles dont la chute a été occasionnée par le typhon indique que la perturbation par le typhon peut conduire le cycle de P et N à un taux quelque peu plus rapide, ce qui est important du point de vue de la productivité de la forêt puisque P et N son...

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“…Higher P availability in P. mugo scrubs may be related to accumulation of needle litter and subsequent nutrient dynamics during litter breakdown. Rutigliano et al (1998) observed rapid losses of P, both by leaching and mineralization, from decomposing needle litter independent of the initial P content in the litter itself. In addition, P is leached from pine roots as well (Comerford and Smethurst 1993).…”

Section: Relationships Between Anpp and Nutrients In The Vegetationmentioning

confidence: 91%

Aboveground production and nutrient status of the vegetation of different mire types in the South-eastern Alps (Italy)

2010

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We determined aboveground net primary production (ANPP) in five mires in the South-eastern Alps of Italy. The mires differed considerably from each other with regard to pore-water chemistry, ranging from bog to rich fen. In different habitat types (hummock, scrub, lawn, fen meadow, hollow and marginal stream) within each mire type we assessed nutrient status based on measurements of nutrient concentrations and nutrient ratios in the plant biomass in order to test whether ANPP patterns along the poor-rich gradient could be related to the limiting effects of one or several nutrients for biomass production. Vegetation composition varied considerably both among mire sites and among habitat types in terms of individual species and plant functional types (PFTs). Nonetheless, mean ANPP was similar in the five mires. However, ANPP showed a positive correlation with total P concentration and negative correlations with the N:P ratio and with the K:P ratio of the vegetation. We conclude that plant biomass production is limited by P, rather than by other nutrients, across a broad range of mire types in this region.Produzione primaria e status nutritizio nella vegetazione di torbiera nelle Alpi sud-orientali italiane Riassunto In questo lavoro viene analizzata la produzione primaria netta in cinque torbiere delle Alpi sudorientali.Queste torbiere presentano notevoli differenze nel chimismo dell'acqua di falda e la loro tipologia varia da torbiere alte ombrotrofiche a torbiere basse fortemente minerotrofiche. La vegetazione di queste torbiere differisce inoltre considerevolmente sia in termini di composizione specifica che di frequenza dei tipi funzionali. Nonostante tali differenze, la produzione primaria nelle cinque torbiere non presenta differenze significative tra le cinque torbiere. La produzione primaria risulta invece positivamente correlata con la concentrazione totale di fosforo nella vegetazione e negativamente correlata con il rapporto N:P e con il rapporto K:P nella vegetazione. In conclusione, la produzione primaria nei siti esaminati è principalmente limitata da carenze di fosforo. Tale limitazione si esercita in un ampio ambito di tipi di torbiera.

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Nutrient dynamics in decaying leaves of Fagus sylvatica L. and needles of Abies alba Mill.

Cited by 25 publications

References 17 publications

Effects of sylvicultural practices on nutrient status in a Pinus radiata plantation: Nutrient export by tree removal and nutrient dynamics in decomposing logging residues

Effects of sylvicultural practices on nutrient status in a Pinus radiata plantation: Nutrient export by tree removal and nutrient dynamics in decomposing logging residues

Nutrient dynamics in decomposing needles ofPinus luchuensisafter typhoon disturbance in a subtropical environment

Aboveground production and nutrient status of the vegetation of different mire types in the South-eastern Alps (Italy)

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