Rainfall manipulation effects on litter decomposition and the microbial biomass of the forest floor

Salamanca, Eric F.; Kaneko, Nobuhiro; Katagiri, Shigeo

doi:10.1016/s0929-1393(02)00153-1

Cited by 80 publications

(59 citation statements)

References 35 publications

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“…Wieder and Wright [1995] and AlvarezSanchez and Enriquez [1996] reported significantly higher k values during the wet season, and irrigation delivered during the dry season has also been found to stimulate rates of decomposition [Wieder and Wright, 1995], suggesting that available soil moisture limits rates of litter decomposition. However, in other field manipulative studies, the rate constant in plots exposed to partial rainfall exclusion (approximately 50% of the total monthly rainfall) was similar to that observed in plots receiving full rainfall [Salamanca et al, 2003], suggesting that moderated reductions in water availability may have little direct effect on k. Furthermore, significant rates of litter decomposition can occur in litter humidity and moisture contents as low as 32 and 5%, respectively [Nagy and Macauley, 1982], which is lower than the ambient relative humidity and the surface soil moisture during the dry season [Vourlitis et al, 2002[Vourlitis et al, , 2008. Given the large dry season litter production (Figure 1d), it is conceivable that moisture conditions in the surface litter layer during the dry season were conducive for rapid microbial degradation of surface litter.…”

Section: Litter Decomposition and The Surface Litter Poolsupporting

confidence: 72%

Soil respiration and aboveground litter dynamics of a tropical transitional forest in northwest Mato Grosso, Brazil

et al. 2008

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[1] Measurements of soil CO 2 efflux, litter production, and the surface litter pool biomass were made over a 1 year period in a tropical transitional forest near Sinop, Mato Grosso, Brazil with the aim of quantifying the seasonal variation in soil respiration and litter decomposition and the annual contribution of litter decomposition to soil CO 2 efflux. Average annual soil CO 2 efflux (±95% confidence interval (CI)) was 7.91 ± 1.16 g C m À2 d À1 . Soil CO 2 efflux was highest during the November-February wet season (9.15 ± 0.90 g C m À2 d À1 ) and lowest during the May-September dry season (6.19 ± 1.40 g C m À2 d À1 ), and over 60% of the variation in seasonal soil CO 2 efflux was explained by seasonal variations in soil temperature and moisture. Mass balance estimates of mean (±95% CI) decomposition rates were statistically different between the wet and dry seasons (0.66 ± 0.08 and 1.65 ± 0.10 g C m À2 d À1 , respectively), and overall, decomposition of leaf litter comprised 16% of the average annual soil respiration. Leaf litter production was higher during the dry season, and mean (±95% CI) leaf litter fall (5.6 ± 1.7 Mg ha À1

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Section: Litter Decomposition and The Surface Litter Poolsupporting

confidence: 72%

Soil respiration and aboveground litter dynamics of a tropical transitional forest in northwest Mato Grosso, Brazil

et al. 2008

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“…Salamanca et al [48] found that mass loss of Quercus serrata, Quercus acutissima, Acer rufinerve, and Pinus densiflora leaf litter, which were protected from rainfall, were lower in comparison to the mass loss of forest floor litter, which was fully exposed to rainfall. According to Swift et al [60], the leaching effect of rainfall enhances mass loss at the initial stage of the decaying process.…”

Section: Introductionmentioning

confidence: 99%

Microbial Functional Diversity Associated with Plant Litter Decomposition Along a Climatic Gradient

Sherman

Steinberger

2012

Microb Ecol

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“…In most of these studies it was focused on organic matter turnover and N transformations by measuring soil respiration rates, microbial biomass carbon, N mineralization and nitrification (Thomsen et al, 1999;Salamanca et al, 2003;Zaman and Chang, 2004). Bioavailable P from organic manures is mainly in the dissolved form.…”

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confidence: 99%

The effects of water potential on some active forms of phosphorus in a calcareous soil amended with sewage sludge

Sinegani¹,

Mahohi²

2010

Journal of Applied Sciences and Environmental Management

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Immobilization and mobilization reactions of soil phosphorus depend on biological properties of soil and these soil properties strongly depend on the soil water potential. The objective of this study was to test the effects of water potential on some active forms of soil P. A semiarid soil classified as Calcic Haploxerept was treated with raw sewage sludge at a rate of 20 g kg -1 . Water potentials established for soil incubation were: saturation (SA, 0 bar), field capacity (FC, -0.3 bar), and permanent wilting point (PWP, -15 bar). An irrigation treatment was dryingrewetting cycle (DWC) between -0.3 to -15 bars. After 0, 20, 60 and 90 days of incubation soils were sampled for analysis. The addition of sewage sludge increased soil total P, organic P, available P, microbial P, soluble and easily soluble P contents. The increase of soluble P was relatively higher. The effects of soil moisture, incubation time and their interaction on all active forms of soil P were significant. During 20 days of incubation, available P and soluble P decreased, whereas microbial P, easily soluble P and dicalcium phosphate increased significantly. After that, available P and easily soluble P increased continuously, but microbial P, soluble P and dicalcium phosphate fluctuated during incubation. Microbial P had negative and significant correlations with available P and easily soluble P. Soils incubated in DWC and FC compared to soils incubated in SA and PWP had significantly higher available P, soluble P and easily soluble P contents. However microbial P and dicalcium phosphate were significantly higher in soils incubated in higher water potential. @ JASEM

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Rainfall manipulation effects on litter decomposition and the microbial biomass of the forest floor

Cited by 80 publications

References 35 publications

Soil respiration and aboveground litter dynamics of a tropical transitional forest in northwest Mato Grosso, Brazil

Soil respiration and aboveground litter dynamics of a tropical transitional forest in northwest Mato Grosso, Brazil

Microbial Functional Diversity Associated with Plant Litter Decomposition Along a Climatic Gradient

The effects of water potential on some active forms of phosphorus in a calcareous soil amended with sewage sludge

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