Litter fall in Mediterranean Pinus pinaster Ait. stands under different thinning regimes

Roig, Sònia; Rı́o, Miren del; Cañellas, Isabel; Montero, Gregorio

doi:10.1016/j.foreco.2004.10.068

Cited by 86 publications

(74 citation statements)

References 28 publications

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“…Such unusual needle mortality was also observed at three other evenaged maritime pine stands in the same region as this study, differing in age, and corresponded to reductions in LAI (Delzon and Loustau, 2005). Roig et al (2005) have also reported another peak for litter fall in winter in maritime pines in Spain, which was related to a moisture deficit. …”

Section: Seasonal Variation In Energy Fluxessupporting

confidence: 83%

Carbon dioxide and energy flux partitioning between the understorey and the overstorey of a maritime pine forest during a year with reduced soil water availability

Jarosz

Brunet

Lamaud

et al. 2008

Agricultural and Forest Meteorology

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However, due to high soil water deficit, the annual ecosystem GPP was 40% less than usually observed at this site. This budget resulted from a sink of -131 gC m -2 for the overstorey and a source of +74 gC m -2 for the understorey. Moreover, on an annual basis the overstorey layer contributed to almost two thirds of the ecosystem respiration. Finally, the effect of longlasting soil water deficit on the maritime pine forest was found more important than the effect of the heat wave and drought of summer 2003.

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Section: Seasonal Variation In Energy Fluxessupporting

confidence: 83%

Carbon dioxide and energy flux partitioning between the understorey and the overstorey of a maritime pine forest during a year with reduced soil water availability

Jarosz

Brunet

Lamaud

et al. 2008

Agricultural and Forest Meteorology

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“…However, in a summarising study across Europe, no correlation between needle/total litterfall and age was found; but they found a positive correlation between the contribution of needles and the magnitude of litterfall (Berg and Meentemeyer, 2001). It is somewhat surprising that in some studies it is reported that no-needles litterfall was negligible (Kavvadias et al, 2001;Roig et al, 2005). Oak leaves contributed to about 50% to total oak-derived litterfall, a much lower value than other studies on Q. pyrenaica (Gallardo et al, 1998), Q. ilex (Rapp et al, 1999) or Quercus robur L. (Díaz-Maroto and Vila-Lameiro, 2006;Hansen et al, 2009;Vesterdal et al, 2008).…”

Section: Litterfall In the Ecotone Scots Pine -Pyrenean Oak 491mentioning

confidence: 98%

“…The ecological importance of reproductive organs or coarse woody debris is high (Montes and Cañellas, 2006) and further research is needed in this direction. Size of the trap may play a role: if the trap is too small (Blanco et al, 2006;Roig et al, 2005), coarse branches may be underestimated, and a key component of the soil C input may be missed. For instance, needle-fall has been proposed as a simple indicator of total litterfall (Berg et al, 1999), but more accurate estimations are needed, since we consider that needle fall can be only a rough estimator of total litterfall, and heterogeneity of coarse debris is high (Pausas, 1997).…”

Section: Litterfall In the Ecotone Scots Pine -Pyrenean Oak 491mentioning

confidence: 99%

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Aboveground soil C inputs in the ecotone between Scots pine

Díaz-Pinés¹,

Sánchez²,

Montes

2011

For. syst.

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Aboveground litterfall from Pyrenean oak (Quercus pyrenaica Willd. a semi-deciduous species), mixed Pyrenean oak-pine and pine (Pinus sylvestris L.) forest stands was surveyed in two sites in a Mediterranean mountain area during a period of 36 and 29 months, respectively. Separation in different litterfall fractions was performed, and C content of each fraction was measured to calculate the C flux to the soil due to litterfall. Our results showed that litterfall input was higher in pine stands than in Pyrenean oak stands (1.8-2.4 Mg C ha -1 year -1 at pine plots and 0.9-1.4 Mg C ha -1 year -1 at oak plots) and mixed plots showed intermediate values. Needles or leaves contributed about 50% to total litterfall, underpinning the importance of the rest of materials in the soil C input. The seasonal pattern showed a maximum in Pyrenean oak stands in autumn-early winter, while the pine stands had the maximum in summer, which is in consonance with the physiology of fall of broadleaves and coniferous trees in these latitudes , but clearly differs from needle-shed in Central and Northern Europe. A dry-spring year corresponded to a lower leaf fall during the following autumn, and leaf abscission came some weeks earlier than a year with a rainy spring.Key words: litterfall; Pinus sylvestris; Quercus pyrenaica; ecotone; Mediterranean mountain. ResumenCaída de hojarasca en un ecotono Pinus sylvestris L.-Quercus pyrenaica Willd. en la Sierra de Guadarrama La tasa de caída de hojarasca en parcelas puras de rebollo (Quercus pyrenaica Willd.), parcelas mixtas de rebollo y pino silvestre y parcelas puras de pino (Pinus sylvestris L.) fue estudiada en dos localizaciones de montaña mediterránea durante 36 y 29 meses, respectivamente. Se llevó a cabo una separación de los componentes de la hojarasca, y se determinó el porcentaje de C en cada una de las fracciones, para calcular un flujo de entrada de C al suelo debido al desfronde. Nuestros resultados muestras que la tasa de caída de hojarasca fue más alta en parcelas de pino que de rebollo, alrededor del doble (1.8-2.4 Mg C ha -1 año -1 en pino frente a 0.9-1.4 Mg C ha -1 año -1 en rebollo); las parcelas mixtas mostraron valores intermedios. Las acículas u hojas contribuyeron alrededor del 50% al total de caída de hojarasca. El patrón estacional mostró un máximo de caída de hojarasca de rebollo en otoño y comienzos de invierno, mientras que en las parcelas de pino, dicho máximo se produjo en verano, lo que es congruente con la fisiología de la caída de hojas o acículas en frondosas y coníferas en estas latitudes, pero desmarcándose de los valores obtenidos en Europa Central y del Norte. Un año con primavera seca coincidió con un desfronde de hojas de rebollo menor; asimismo, la caída de la hoja se adelantó algunas semanas con respecto al año con una primavera lluviosa.

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“…Los bosques ribereños presentan múltiples funciones dentro de las planicies inundables y no inundables (Wilcke et al, 2002;Roig et al, 2005). Estos albergan gran variedad de especies vegetales protectoras, proporcionan refugio para diversos organismos, retardan el escurrimiento (Depettris et al, 1992;Ceccon, 2003), modulan el balance entre erosión y sedimentación, participan en la acumulación y transferencia de nutrientes, constituyen la solución más eficiente para reducir la contaminación difusa (Naiman et al, 2005;Veneklaas et al, 2005), entre otras funciones (Klinge et al,1983;Herrera, 1985).…”

Section: Introductionunclassified

Caída y descomposición de hojarasca en los bosques ribereños del manantial de Cañaverales, Guajira, Colombia

Molina¹,

Barrios²,

León³

2018

Acta biol. Colomb.

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RESUMENSe midieron los flujos de materia orgánica aportados por la hojarasca al manantial de Cañaverales (La Guajira, Colombia), durante un período de seis meses (seco y lluvioso). La caída mensual fue de 0,17 t·ha -1 ·mes -1 , que extrapolada a un año representó 2,08 t·ha -1 ·año -1 , valor intermedio a los registrados en otros bosques secos tropicales. Se evidenció una correlación significativa entre la caída de hojarasca y la precipitación. Los aportes orgánicos fueron dominados por la fracción foliar (66,61 %), seguidos del material reproductivo (15,92 %), el material leñoso (11,12 %) y misceláneo (6,36 %). La mayor caída de hojarasca foliar se regis tró para Prosopis juliflora (1,31 t·ha -1 ·año -1 ) y la menor caída la presentó Brosimum alicastrum (0,46 t·ha -1 ·año -1 ). Las especies P. juliflora y Anacardium excelsum presentaron los mayores aportes de hojarasca foliar, lo que sugiere que podrían ser especies potenciales para su inclusión en actividades de restauración de zonas con corrientes de agua. P. juliflora fue la especie que presentó mayores tasas de descomposición de hojarasca (0,242 año -1 ), mientras que la Sterculia apetala fue la más persistente (0,079 año -1 ). Los resultados indican que la caída de hojarasca está condicionada por la composición del bosque y las variaciones climáticas.Palabras claves: Brosimum alicastrum, materia orgánica, Prosopis juliflora, Sterculia apetala. ABSTRACTWe analyzed the contribution of particulate organic matter to the spring Cañaverales (La Guajira, Colombia) over a period of six months (dry and rainy). The monthly litterfall was 0.17 t·ha -1 ·month -1 , which represented 2.08 t·ha -1 ·year -1 when extrapolated to one year. This is an intermediate value with respect to others reported from tropical dry forests. The correlation between litter production and precipitation was statistically significant. Litterfall was dominated by the leaf fraction (66.61 %), followed by the reproductive material (15.92 %), the woody (11.12 %) and miscellaneous materials (6.36 %). The highest production of leaf litter was registered for Prosopis juliflora (1.31 t·ha -1 ·year -1 ) and the lowest for Brosimum alicastrum (0.46 t·ha -1 ·year -1 ). P. juliflora and Anacardium excelsum, presented the major contributions of foliar leaf litter, what suggests they could be potential species for inclusion in restoration activities in riparian areas. P. juliflora was the species that presented the highest rates of litter decomposition (0.242 year -1 ), while the Sterculia apetala was the most persistent (0.079 year -1 ). The results indicate that litterfall and litter decomposition rates depend on forest composition and climatic variations.

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Litter fall in Mediterranean Pinus pinaster Ait. stands under different thinning regimes

Cited by 86 publications

References 28 publications

Carbon dioxide and energy flux partitioning between the understorey and the overstorey of a maritime pine forest during a year with reduced soil water availability

Carbon dioxide and energy flux partitioning between the understorey and the overstorey of a maritime pine forest during a year with reduced soil water availability

Aboveground soil C inputs in the ecotone between Scots pine

Caída y descomposición de hojarasca en los bosques ribereños del manantial de Cañaverales, Guajira, Colombia

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