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11 résultats
Nitrogen deposition does not enhance Sphagnum decomposition.
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Long-term additions of nitrogen (N) to peatlands have altered bryophyte growth, species dominance, N content in peat and peat water, and often resulted in enhanced Sphagnum decomposition rate. However, these results have mainly been derived from experiments in which N was applied as ammonium nitrate
Exploding a myth: the capsule dehiscence mechanism and the function of pseudostomata in Sphagnum.
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The nineteenth century air-gun explanation for explosive spore discharge in Sphagnum has never been tested experimentally. Similarly, the function of the numerous stomata ubiquitous in the capsule walls has never been investigated. Both intact and pricked Sphagnum capsules, that were allowed to dry
Sphagnum growth under N-saturation: interactive effects of water level and P or K fertilisation.
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Sphagnum biomass is a promising material to substitute peat in growing media and can be sustainably produced by converting existing drainage based peatland agriculture into wet, climate-friendly agriculture (paludiculture). Our study focuses on yield maximisation of Sphagnum as a crop. We tested the
Long-term interactive effects of N addition with P and K availability on N status of Sphagnum.
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Little information exists concerning the long-term interactive effect of nitrogen (N) addition with phosphorus (P) and potassium (K) on Sphagnum N status. This study was conducted as part of a long-term N manipulation on Whim bog in south Scotland to evaluate the long-term alleviation effects of
Sporotrichosis of the abdomen.
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A nursery worker contracted sporotrichosis of the abdomen after air-layering with sphagnum moss. The infection, resulting in a 4 by 6 cm ulcerated plaque, satellite lesion, and involvement of the epigastric lymphatics, resolved after two months of saturated potassium iodide therapy.
A simple method for differential isolation of freely dispersed and particle-associated peat microorganisms.
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Differential isolation of physiologically and ecologically diverse microbial groups facilitates evaluation of their activities in the environment. Here we describe a new method for differential isolation of freely dispersed and particle-associated peat microorganisms. The method is based on
Granulomas of the vocal cords caused by Sporothrix schenckii.
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A 42-year-old female acquired an acute respiratory infection one week after working in a sphagnum moss packing plant. Three and one half months later direct laryngoscopic examination, done because of persistent hoarseness, revealed granulomas of the left true cord. Initial biopsy showed noncaseating
Vegetation feedbacks of nutrient addition lead to a weaker carbon sink in an ombrotrophic bog.
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To study vegetation feedbacks of nutrient addition on carbon sequestration capacity, we investigated vegetation and ecosystem CO2 exchange at Mer Bleue Bog, Canada in plots that had been fertilized with nitrogen (N) or with N plus phosphorus (P) and potassium (K) for 7-12 years. Gross
Physico-chemical and chemical properties of some coconut coir dusts for use as a peat substitute for containerised ornamental plants.
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Selected physico-chemical and chemical characteristics of 13 coconut coir dust (mesocarp pithy tissue plus short-length fibres) samples from Asia, America and Africa were evaluated as peat alternatives. All properties studied differed significantly between and within sources, and from the control
Sporotrichosis: an overview and therapeutic options.
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Sporotrichosis is a chronic granulomatous mycotic infection caused by Sporothrix schenckii, a common saprophyte of soil, decaying wood, hay, and sphagnum moss, that is endemic in tropical/subtropical areas. The recent phylogenetic studies have delineated the geographic distribution of multiple
Development of a defined compost system for the study of plant-microbe interactions.
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Plant growth promoting rhizobacteria can improve plant health by providing enhanced nutrition, disease suppression and abiotic stress resistance, and have potential to contribute to sustainable agriculture. We have developed a sphagnum peat-based compost platform for investigating plant-microbe
La base de données d'herbes médicinales la plus complète soutenue par la science
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