Decomposition of Angiosperm Tree Leaf Litter

Jensen, V.

doi:10.1016/b978-0-12-215001-2.50009-x

Cited by 92 publications

(46 citation statements)

References 75 publications

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“…Além disso, estudos relacionados à produção e acúmulo de serapilheira fornecem subsídios para melhor entendimento da dinâmica de nutrientes (Godinho et al, 2014). A decomposição da serapilheira é controlada, principalmente, por fatores como a temperatura e precipitação Jensen, 1974), condições físicas e químicas do ambiente, qualidade orgânica e nutricional do material que é aportado, além da composição da comunidade detritívora e sua afinidade com o substrato (Cianciaruso et al, 2006). Estudos realizados em florestas tropicais evidenciam que as taxas de decomposição são muito afetadas pelas variações sazonais, formando padrões distintos nas estações chuvosa e seca (Cornu et al, 1997).…”

Section: Introductionunclassified

Decomposição e Atividade Microbiana da Serapilheira em Coberturas Florestais no Sul do Espírito Santo

et al. 2017

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RESUMOO processo de decomposição de serapilheira deve ser amplamente estudado por se tratar de um fator-chave na manutenção e ciclagem de nutrientes nos ecossistemas. Este estudo teve como objetivos: avaliar a decomposição, a liberação de nutrientes e a atividade microbiana da serapilheira em coberturas florestais de floresta secundária, Acacia mangium, Sapindus saponaria e Hevea brasiliensis, no sul do Espírito Santo. A decomposição da serapilheira e a liberação de nutrientes foi quantificada por meio de litter bags. Para a avaliação da atividade microbiana procedeu-se à quantificação do carbono mineralizável por meio da evolução de CO 2 . Os resultados mostraram que as coberturas florestais se comportaram de forma diferenciada quanto à decomposição e atividade microbiana, destacando-se a Sapindus saponaria, que apresentou maior velocidade de decomposição de serapilheira. A cobertura de Sapindus saponaria apresentou quantidades acumuladas de CO 2 superiores às demais. A cobertura de Acacia mangium apresentou os menores valores de CO 2 acumulado.Palavras-chave: ecossistema florestal, ciclagem de nutrientes, microrganismo. Decomposition and Microbial Activity of Forest Floor Litter in the South of Espírito Santo ABSTRACTThe decomposition process of litter should be widely studied, as it is a key factor for nutrient maintenance and cycling in ecosystems. This study aimed to evaluate the decomposition, release of nutrients, and microbial activity of the forest floor litter of secondary forest, Acacia mangium, Sapindus saponaria, and Hevea brasiliensis in the south of Espirito Santo. The litter decomposition and nutrients release was measured by means of litter bags added to each forest cover. For the assessment of microbial activity, we quantified mineralizable carbon by CO 2 evolution. The results showed that the forest covers behaved differently in terms of decomposition and microbial activity; particular emphasis is given to Sapindus saponaria, which presented a faster decomposition of litter. The cover of Sapindus saponaria also presented higher amounts of accumulated CO 2 compared to other forest covers; whereas the cover of Acacia mangium presented the lowest values of accumulated CO 2 .

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Section: Introductionunclassified

Decomposição e Atividade Microbiana da Serapilheira em Coberturas Florestais no Sul do Espírito Santo

et al. 2017

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“…This higher pH permits the development of herbaceous legumes, favouring a better C/N ratio and increasing the speed of the biogeochemical cycles [26]. [20]. Finally, there were no significant differences (P < 0.05) between VR and NF as regards aboveground production or the different fractions; these plots were then differentiated according to their geological substrates (slate).…”

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confidence: 99%

Nutrient cycling in deciduous forest ecosystems of the Sierra de Gata mountains: aboveground litter production and potential nutrient return

Gallardo

Martin²,

Regina

1998

Ann. For. Sci.

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-The potential nutrient return in a chestnut coppice (Castanea sativa Miller) over a period of 3 years (1991)(1992)(1993)(1994) has been established and compared with the returns found in four deciduous oak (Quercus pyrenaica Wild.) forests (1990)(1991)(1992)(1993) located in the Sierra de Gata mountains (central Spanish system). A convergence of abscission phenology patterns was observed among the different ecosystems studied, together with a delay in leaf fall at the warmest plot. This similarity is logical since the plots harbour the same deciduous species which are, however, subjected to climatological variations. The chestnut coppice was found to be more productive than the oak forests, the amounts of leaves, branches, flowers and total litterfall being significantly greater. Statistical analysis showed a highly significant correlation between the chestnut coppice and the oak forest aboveground production, ranging between 0.82 and 0.96 for the leaves and between 0.72 and 0.89 for the total litter. In general, the leaf organs of the chestnut trees showed a higher concentration of bioelements than the oaks, with N and Ca predominant in the buds, Ca and Zn in the branches, K in the fruits, and above all Fe and Cu in the other plant remains. In all the forests studied, the potential nutrient supply fluctuated over the years and depended strongly on phenological factors; above all it was found to be governed by the leaves, which contributed most to the return of mineral nutrients to the soil. The most marked potential nutrient return through the oak aerial organs occurred on the plot with the lowest rainfall, particularly with respect to P and Ca. Considering all the forest plots, the general sequence of the amount of bioelements returning with the litterfall to the soil was as follows:with the exception of one oak plot (

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“…Hence, it could be said that combination of bacterial and fungal communities made the differences in the soil nutrient mineralisation of water hyacinth mulched plots over control plots. This community could possibly include ammonifiers, N-fixing bacteria and sugar fungi [21]. From the present study, it is established that soil mulched with different forms of water hyacinth significantly increased the fungal and bacterial populations compared to control plots (Fig.…”

Section: Discussionmentioning

confidence: 64%

Effect of Water Hyacinth (Eichhornia crassipes) Mulch on Soil Microbial Properties in Lowland Rainfed Rice-Based Agricultural System in Northeast India

Balasubramanian

Arunachalam

et al. 2013

Agric Res

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Most water bodies in the humid tropical areas of Arunachal Pradesh are infested with gregarious Eichhornia crassipes (Mart.) Solms. Over a period of time, with death and decay, the water bodies are eutrophicated. This natural phenomenon gave forth the idea of using E. crassipes biomass as a compost in agricultural fields for soil nutrients management, using microbial characteristics as potential indicators. The study indicating that water hyacinth as a potential organic substrate can stimulate the growth of diversity of microbial population in agricultural soils. In general, soil respiration and microbial population were significantly (p \ 0.05) greater in mulched plots compared to control. Among treatments, vermicompost mulched plots recorded for higher bacterial (74.31 CFU 9 10 4 ) and fungal counts (31.09 CFU 9 10 3 ) at both surface and sub-surface soil layers. The present study provides baseline information for ecofriendly approach to management of E. crassipes, especially for the countries where it poses a huge threat to the wetland ecosystems. Nonetheless, nutrient deficient soils in the present study site due mainly to conventional farming practices and nutrient runoff could however be checked by mulching soils with naturally and abundantly growing E. crassipes locally.

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Decomposition of Angiosperm Tree Leaf Litter

Cited by 92 publications

References 75 publications

Decomposição e Atividade Microbiana da Serapilheira em Coberturas Florestais no Sul do Espírito Santo

Decomposição e Atividade Microbiana da Serapilheira em Coberturas Florestais no Sul do Espírito Santo

Nutrient cycling in deciduous forest ecosystems of the Sierra de Gata mountains: aboveground litter production and potential nutrient return

Effect of Water Hyacinth (Eichhornia crassipes) Mulch on Soil Microbial Properties in Lowland Rainfed Rice-Based Agricultural System in Northeast India

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