scholarly journals Dynamics of yeast populations recovered from decaying leaves in a nonpolluted stream: a 2-year study on the effects of leaf litter type and decomposition time

2007 ◽  
Vol 7 (4) ◽  
pp. 595-603 ◽  
Author(s):  
Ana Sampaio ◽  
José Paulo Sampaio ◽  
Cecília Leão
Keyword(s):  
Leaf Litter ◽  
Litter Type ◽  
Decomposition Time

Decomposition of Populustremuloides leaf litter accelerated by addition of Alnuscrispa litter

1989 ◽  
Vol 19 (5) ◽  
pp. 674-679 ◽  
Author(s):  
Barry R. Taylor ◽  
William F. J. Parsons ◽  
Dennis Parkinson
Keyword(s):  
Mass Loss ◽  
Leaf Litter ◽  
Loss Rate ◽  
Mass Loss Rate ◽  
Rocky Mountain ◽  
Litter Type ◽  
Litter Bags ◽  
Mass Losses ◽  
Mixed Litter ◽  
Aspen Forest

Decomposition of a slow-decaying litter type is expected to be faster in the presence of a nutrient-rich, fast-decaying litter type, but this effect has never been conclusively demonstrated for deciduous leaves. In a Rocky Mountain aspen forest, we followed decomposition of leaf litter of trembling aspen (Populustremuloides), a relatively slow-decomposing, nutrient-poor species, and green alder (Alnuscrispa), a nutrient-rich, faster-decomposing species, as well as a mixture of the two, for 2 years. Mass losses over the first winter were greatest for aspen alone, probably as a result of loss of solubles, but the mass loss rate overall was lowest for aspen (k = −0.191/year) and greatest for alder (k = −0.251/year). Mass loss rate for mixed litter (k = −0.245/year) was much closer to the rate for alder than for aspen, demonstrating a marked acceleration of mass loss rates in the mixed-litter bags. At these rates, 95% mass loss would be achieved by aspen, alder, and mixed litter in 14.5, 11.5, and 11.6 years, respectively.

scholarly journals Leaf and Root Litter Species Identity Influences Bacterial Community Composition in Short-Term Litter Decomposition

2020 ◽  
Author(s):  
Ying Lu ◽  
Kun Li ◽  
Ruiqiang Ni ◽  
Rongchu Han ◽  
Chuanrong Li ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Leaf Litter ◽  
Community Composition ◽  
Fine Roots ◽  
Bacterial Community Structure ◽  
Fine Root ◽  
Bacterial Community Composition ◽  
Litter Type ◽  
Opposite Result ◽  
Root Litter

Abstract Background: Microorganisms play a crucial role in litter decomposition in terrestrial ecosystems. However, it remains unclear, which effects of leaf litter and root species on bacterial community composition and diversity after one year's decomposition. Methods: The leaf and fine roots litters of Robinia pseudoacacia , Quercus acutissima , Pinus tabulaeformis and Pinus densiflora , which are the dominant afforestation species in Mount Tai, were analysed using the Nylon litterbag method and Illumina Miseq high-throughput sequencing for the amplification of bacterial 16S rRNA V4-V5. We measured the remaining litter mass and the bacterial community composition and assessed the effects of leaf and root litter species on the bacterial community after one-year decomposition periods.Results: (1) The remaining masses of leaf and fine roots litters of the four plant species were significantly influenced by organ type and species. The remaining mass of fine root litter was smaller than that of leaf litter for broad-leaved species, and the opposite result was found for coniferous species. (2) The observed species Chao1 and phylogenetic diversity values were significantly lower for leaf litters than for fine root litter. The community richness index was positively correlated with the C content, C:N and lignin content and negatively correlated with N:P, N content and P content. The bacterial community structure differed significantly among leaf and root litter decomposition for the four species ( p <0.05). The bacterial community structure in leaf litter was most highly correlated with the initial N content and N:P. The bacterial community structure in fine roots was most highly correlated with the lignin content. (3) The bacterial phyla Bacteroidetes , Acidobacteria and Gemmatimonadetes were significantly affected by litter and species type, and the relative abundances of Firmicutes and Chloroflexi were only affected by litter type. The relative abundances of Acidobacteria , Firmicutes and Chloroflexi in fine root litter were higher than those in leaf litter, while the opposite result was found for Bacteroidetes . The bacterial genera Burkholderia-Paraburkholderia , Sphingomonas and Mucilaginibacter were affected by litter type ( p <0.05). The relative abundance of Burkholderia-Paraburkholderia in fine root litter was higher than that in leaf litter, while the opposite result was found for Bradyrhizobium , Sphingomonas and Mucilaginibacter . Pearson correlation analysis showed that the average relative abundance of the dominant phyla and genera was affected by the initial litter properties, especially for Bacteroides , Acidobacteria , Burkholderia , and Sphingomonas . Conclusions: Litter type, interaction between litter type and species were important than species in shaping the bacterial diversity and community composition in decomposing litter. And this were affected by initial chemical properties of the litter.

scholarly journals Leaf-litter stoichiometry is affected by streamwater phosphorus concentrations and litter type

2013 ◽  
Vol 32 (3) ◽  
pp. 753-761 ◽  
Author(s):  
Erin E. Scott ◽  
Clay Prater ◽  
Eric Norman ◽  
Bryant C. Baker ◽  
Michelle Evans-White ◽  
...  
Keyword(s):  
Leaf Litter ◽  
Litter Type

scholarly journals Mineral Fertilizers from Soil Diagnosis Reduce the Decomposition Time of Cocoa Leaf Litter in the South-Western of Cote d'ivoire

2021 ◽  
pp. 84-95
Author(s):  
Hypolith Koffi Kouadio ◽  
Alain Jacques Acka. Kotaix ◽  
Zoumana Konaté ◽  
Emmanuel Koffi Kassin ◽  
Stanislas Koffi Kouakou ◽  
...  
Keyword(s):  
Leaf Litter ◽  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Decay Rates ◽  
Mineral Fertilizers ◽  
Decomposition Rates ◽  
Cote D’Ivoire ◽  
Côte D'ivoire ◽  
Decomposition Time ◽  
Npk Fertilizer

A study on soil mineral fertilization was carried out over three years in three cocoa farms in the Nawa region of south-western Côte d'Ivoire. The aim of this study was to evaluate the effects of mineral fertilizers on the decomposition time of cocoa leaf litter. The experimental design was Fisher block with four treatments (T0, T1, T2, T3) repeated three times. The treatments were for T0, the control without fertilizer, for T1, NPK fertilizer 0-23-19, for T2, NPK fertilizer 0-15-15 + 17 CaO + 5 MgO + 1 B2O3 + 0.5 Zn and for T3, NPK fertilizer 4-10-10 + 19 CaO + 4 MgO + 0.8 B2O3 + 0.3 Zn. In each treatment, 3 plots of 1 m2 were delimited with a 1 cm2 mesh wire grid. The rate of decomposition of the cocoa leaf litter was made by measuring twice a year the weight loss of the ground litter contained in the plots. Comparison of the average decomposition rates between treatments showed that the fertilized soils had the best rates during the first 6 and 12 months of the trial. In Soubré, the T2 treatment (24.6±0.6%) in the 6th month and the T1 (72.6±6.6), T2 (82.4±1.6) and T3 (78.8±4.0%) treatments in the 12th month had the best decomposition rates. At Divo, treatment T1 (38.8±0.5%) in month 6 and treatments T1 (57.8±1.7%), T2 (67.9±10%) and T3 (66.9±7.7%) in month 12 were the best. At Méagui, decay rates did not differ between treatments throughout the trial. The application of mineral fertilizers resulting from soil diagnosis reduced the decomposition time of the cocoa leaf litter.

Litter-type specific microbial responses to the transformation of leaf litter into millipede feces

2015 ◽  
Vol 86 ◽  
pp. 17-23 ◽  
Author(s):  
François-Xavier Joly ◽  
Mathieu Coulis ◽  
Aurélien Gérard ◽  
Nathalie Fromin ◽  
Stephan Hättenschwiler
Keyword(s):  
Leaf Litter ◽  
Litter Type ◽  
Microbial Responses
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